Science.gov

Sample records for stream locations july august

  1. Results of Macroinvertebrate Sampling Conducted at 33 SRS Stream Locations, July--August 1993

    SciTech Connect

    Specht, W.L.

    1994-12-01

    In order to assess the health of the macroinvertebrate communities of SRS streams, the macroinvertebrate communities at 30 stream locations on SRS were sampled during the summer of 1993, using Hester-Dendy multiplate samplers. In addition, three off-site locations in the Upper Three Runs drainage were sampled in order to assess the potential for impact from off-site activities. In interpreting the data, it is important to recognize that these data were from a single set of collections. Macroinvertebrate communities often undergo considerable temporal variation, and are also greatly influenced by such factors as water depth, water velocity, and available habitat. These stations were selected with the intent of developing an on-going sampling program at a smaller number of stations, with the selection of the stations to be based largely upon the results of this preliminary sampling program. When stations within a given stream showed similar results, fewer stations would be sampled in the future. Similarly, if a stream appeared to be perturbed, additional stations or chemical analyses might be added so that the source of the perturbation could be identified. In general, unperturbed streams will contain more taxa than perturbed streams, and the distribution of taxa among orders or families will differ. Some groups of macroinvertebrates, such as Ephemeroptera (mayflies), Plecoptera (stoneflies) and Trichoptera (caddisflies), which are collectively called EPT taxa, are considered to be relatively sensitive to most kinds of stream perturbation; therefore a reduced number of EPT taxa generally indicates that the stream has been subject to chemical or physical stressors. In coastal plain streams, EPT taxa are generally less dominant than in streams with rocky substrates, while Chironomidae (midges) are more abundant. (Abstract Truncated)

  2. Earthquakes; July-August 1977

    USGS Publications Warehouse

    Person, W.J.

    1978-01-01

    July and August were somewhat active seismically speaking, compared to previous months of this year. There were seven earthquakes having magnitudes of 6.5 or greater. The largest was a magnitudes of 6.5 or greater. The largest was a magnitude 8.0 earthquake south of Sumbawa Island on August 19 that killed at least 111. The United States experienced a number of earthquakes during this period, but only one, in California, caused some minor damage. 

  3. Loglines. July-August 2014

    DTIC Science & Technology

    2014-08-01

    Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions...CONTENTS 1Loglines July - August 2014 A Conversation with ... 24 Navy Rear Adm. Ron MacLaren LogPoints 26 I am DLA...Garas A Defense Logistics Agency Document Services’ White House production facility, said. “Sometimes it’s hours of quiet, punctuated by a rush of

  4. Chemical and biological survey of lakes and streams located in the Emerald Lake watershed, Sequoia National Park. Final report, July 1984-July 1986

    SciTech Connect

    Melack, J.M.; Cooper, S.D.; Holmes, R.W.; Sickman, J.O.; Kratz, K.

    1987-02-18

    To investigate the effects or potential effects of acidification on Sierran aquatic habitats, the authors are conducting research on Emerald Lake and its inlet and outlet streams, in Sequoia National Park, California. Emerald Lake was chosen as the focus of the authors studies because it is representative of subalpine and alpine waters in the Sierra Nevada, and is located in the southwestern Sierra where acidic inputs are likely to be greater than in other areas of the Sierra Nevada. The investigations consist of two approaches: (1) A chemical and biological monitoring program and sediment analyses to provide the time series needed to distinguish the effects of anthropogenic disturbance from natural variation; and (2) experimental investigations to examine the sensitivity of aquatic communities to acidic inputs and to predict the responses of aquatic communities to increased acidification. The research reported here began in June 1984 and continued through July 1986.

  5. DRMS World, July/August 2007

    DTIC Science & Technology

    2007-08-01

    DEFENSE REUTILIZATION AND MARKETING SERVICE Visit our Web site at www.drms.dla.mil July/August 2007 Live from Battle Creek Dail goes on location for...x S gma- Wright Patterson takes another look at its operations (see story on page 10) > . On track in IraqDefense Reutilization and Marketing Service...excess military property, specifically F- 14 parts, for employees of the Defense Reutilization and Marketing Service, a field activity of the according to

  6. Earthquakes, July-August 1991

    USGS Publications Warehouse

    Person, W.J.

    1992-01-01

    There was one major earthquake during this reporting period-a magnitude 7.1 shock off the coast of Northern California on August 17. Earthquake-related deaths were reported from Indonesia, Romania, Peru, and Iraq. 

  7. Earthquakes, July-August 1992

    USGS Publications Warehouse

    Person, W.J.

    1992-01-01

    There were two major earthquakes (7.0≤M<8.0) during this reporting period. A magnitude 7.5 earthquake occurred in Kyrgyzstan on August 19 and a magnitude 7.0 quake struck the Ascension Island region on August 28. In southern California, aftershocks of the magnitude 7.6 earthquake on June 28, 1992, continued. One of these aftershocks caused damage and injuries, and at least one other aftershock caused additional damage. Earthquake-related fatalities were reportred in Kyrgzstan and Pakistan. 

  8. Earthquakes, July-August, 1979

    USGS Publications Warehouse

    Person, W.J.

    1980-01-01

    In the United States, on August 6, central California experienced a moderately strong earthquake, which injured several people and caused some damage. A number of earthquakes occurred in other parts of the United States but caused very little damage. 

  9. Science & Technology Review July/August 2016

    SciTech Connect

    Vogt, Ramona L.; Meissner, Caryn N.; Chinn, Ken B.

    2016-07-18

    At Lawrence Livermore National Laboratory, we focus on science and technology research to ensure our nation’s security. We also apply that expertise to solve other important national problems in energy, bioscience, and the environment. Science & Technology Review is published eight times a year to communicate, to a broad audience, the Laboratory’s scientific and technological accomplishments in fulfilling its primary missions. The publication’s goal is to help readers understand these accomplishments and appreciate their value to the individual citizen, the nation, and the world. In this issue for the months of July and August 2016, there are two features: one on Science and Technology in Support of Nuclear Nonproliferation, and another on Seeking Out Hidden Radioactive Materials. Then there are highlights are three research projects--on optics, plasma science, and the nature of neutrinos--along with a news section and patents and awards.

  10. DETAIL OF PLAQUE COMMEMORATING THE JULY/ AUGUST 1958 VOYAGE OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    DETAIL OF PLAQUE COMMEMORATING THE JULY/ AUGUST 1958 VOYAGE OF THE USS NAUTILUS (SSN-571) TO THE NORTH POLE. NOTE: THIS PLAQUE IS NOT LOCATED AT WHARFS S13-S19; IT IS AT THE SUBMARINE MEMORIAL PARK, ABOUT 1,000' SOUTH OF THE WHARFS. THE LOCATION AND ORIENTATION OF THIS PHOTO IS NOT SHOWN ON THE PHOTO KEY MAP - U.S. Naval Base, Pearl Harbor, Additional Piers and Quay Walls, S13 to S19, Northeast end of Magazine Loch, Pearl City, Honolulu County, HI

  11. LogLines. July-August 2009

    DTIC Science & Technology

    2009-08-01

    CONFIRM Story by Beth Reece C ommercial retailers let custom- ers track the delivery of their purchases online , but Defense Logistics Agency customers... online electronic shopping hub known as DOD EMALL, warfighters and other authorized government custom- ers have a secure location and a powerful...sources of supply, officials said. More than $800 million worth of orders were placed using DOD EMALL in fiscal 2008. Shoppers can also meet

  12. 8. Photocopied August 1978. BREAKING CONCRETE BARS, JULY 1898. TESTING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. Photocopied August 1978. BREAKING CONCRETE BARS, JULY 1898. TESTING MACHINE USED BY VON SCHON IN EXPERIMENTS ON METHODS OF MIXING CONCRETE AND ON CONCRETE AGGREGATES WHICH USED LOCAL MATERIALS. (4) - Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie, Chippewa County, MI

  13. 61. Photocopied August 1978. WEST END OF POWER HOUSE, JULY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    61. Photocopied August 1978. WEST END OF POWER HOUSE, JULY 1902. BY THIS POINT THE SUPER-STRUCTURE WAS LARGELY COMPLETE EXCEPT FOR SOME INTERNAL CONCRETE FLOOR POURING AND THE ROOFING. (257) - Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie, Chippewa County, MI

  14. Talking Stick. Volume 26, Number 6, July-August 2009

    ERIC Educational Resources Information Center

    Baumann, James A., Ed.

    2009-01-01

    The "Talking Stick" is published bimonthly, six times a year in January/February, March/April, May/June, July/August, September/October, and November/December by the Association of College and University Housing Officers-International. Each issue is divided into three sections: Features, Columns, and Departments. These sections contain articles…

  15. Talking Stick. Volume 28, Number 6, July-August 2011

    ERIC Educational Resources Information Center

    Baumann, James A., Ed.

    2011-01-01

    The "Talking Stick" is published bimonthly, six times a year in January/ February, March/April, May/ June, July/August, September/October, and November/ December by the Association of College and University Housing Officers-International. Each issue is divided into three sections, namely: Features, Columns, and Departments. These sections contain…

  16. Talking Stick. Volume 27, Number 6, July-August 2010

    ERIC Educational Resources Information Center

    Baumann, James A., Ed.

    2010-01-01

    The "Talking Stick" is published bimonthly, six times a year in January/February, March/April, May/June, July/August, September/October, and November/December by the Association of College and University Housing Officers-International. Each issue is divided into three sections: Features, Columns, and Departments. These sections contain articles…

  17. Talking Stick. Volume 27, Number 6, July-August 2010

    ERIC Educational Resources Information Center

    Baumann, James A., Ed.

    2010-01-01

    The "Talking Stick" is published bimonthly, six times a year in January/February, March/April, May/June, July/August, September/October, and November/December by the Association of College and University Housing Officers-International. Each issue is divided into three sections: Features, Columns, and Departments. These sections contain articles…

  18. Talking Stick. Volume 28, Number 6, July-August 2011

    ERIC Educational Resources Information Center

    Baumann, James A., Ed.

    2011-01-01

    The "Talking Stick" is published bimonthly, six times a year in January/ February, March/April, May/ June, July/August, September/October, and November/ December by the Association of College and University Housing Officers-International. Each issue is divided into three sections, namely: Features, Columns, and Departments. These sections contain…

  19. Talking Stick. Volume 29, Number 6, July-August 2012

    ERIC Educational Resources Information Center

    Baumann, James A., Ed.

    2012-01-01

    The "Talking Stick" is published bimonthly, six times a year in January/February, March/April, May/June, July/August, September/October, and November/December by the Association of College and University Housing Officers-International. Each issue is divided into three sections: Features, Columns, and Departments. These sections contain…

  20. Talking Stick. Volume 26, Number 6, July-August 2009

    ERIC Educational Resources Information Center

    Baumann, James A., Ed.

    2009-01-01

    The "Talking Stick" is published bimonthly, six times a year in January/February, March/April, May/June, July/August, September/October, and November/December by the Association of College and University Housing Officers-International. Each issue is divided into three sections: Features, Columns, and Departments. These sections contain articles…

  1. 100. Photocopied August 1978. COMPENSATING GATES, VIEW LOOKING SOUTHWEST, JULY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    100. Photocopied August 1978. COMPENSATING GATES, VIEW LOOKING SOUTHWEST, JULY 8, 1916. COMPLETED GATES 13-16 ARE AT THE LEFT. THE PIERS OF GATES 9-12 ARE ON THE RIGHT. SUPER-STRUCTURE ERECTION ON THESE PIERS HAD NOT YET BEGUN. JUST ABOVE THE COFFER DAM, THE BREAKWATER INSTALLED TO PROTECT THE CONSTRUCTION SITE FROM THE RIVER CURRENT CAN BE SEEN. (684) - Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie, Chippewa County, MI

  2. Campbell Creek TVA 2010 First Year Performance Report July 1, 2009 August 31, 2010

    SciTech Connect

    Christian, Jeffrey E; Gehl, Anthony C; Boudreaux, Philip R; New, Joshua Ryan

    2010-10-01

    This research project was initiated by TVA in March 2008 and encompasses three houses that are of similar size, design and located within the same community - Campbell Creek, Farragut TN with simulated occupancy. This report covers the performance period from July 1, 2009 to August 31, 2010. It is the intent of TVA that this Valley Data will inform electric utilities future residential retrofit incentive program.

  3. Carbon monoxide and methane over Canada: July - August 1990

    NASA Technical Reports Server (NTRS)

    Harriss, R. C.; Sachse, G. W.; Collins, J. E., Jr.; Wade, L.; Bartlett, K. B.; Talbot, R. W.; Browell, E. V.; Barrie, L. A.; Hill, G. F.; Burney, L. G.

    1994-01-01

    Carbon monoxide (CO) and methane (CH4) were measured in the 0.15- to 6-km portion of the troposphere over subarctic and boreal landscapes of midcontinent and eastern Canada during July - August 1990. In the mid-continent region, Arctic air entering the region was characterized by relatively uniform CO concentrations (86-108 parts per billion by volume (ppbv)) and CH4 concentrations (1729-1764 ppbv). Local biomass burning and long-range transport of CO into the area from industrial/urban sources and distant fires did frequently produce enhanced and variable concentrations. Emissions of CH4 from the Hudson Bay lowlands was the primary source for enhanced and variable concentrations, especially at altitudes of 0.15-1 km. In eastern Canada, most of the observed variability in CO and CH4 was similar in origin to the phenomena described for the midcontinent region. However, unexpectedly low concentrations of CO (51 ppbv) and CH4 (1688 ppbv) were measured in the midtroposphere on several flights. Combined meteorological and chemical data indicated that the low CO-CH4 events were the result of long-range transport of tropical Pacific marine air to subarctic latitudes.

  4. August median streamflow on ungaged streams in Eastern Coastal Maine

    USGS Publications Warehouse

    Lombard, Pamela J.

    2004-01-01

    Methods for estimating August median streamflow were developed for ungaged, unregulated streams in eastern coastal Maine. The methods apply to streams with drainage areas ranging in size from 0.04 to 73.2 square miles and fraction of basin underlain by a sand and gravel aquifer ranging from 0 to 71 percent. The equations were developed with data from three long-term (greater than or equal to 10 years of record) continuous-record streamflow-gaging stations, 23 partial-record streamflow- gaging stations, and 5 short-term (less than 10 years of record) continuous-record streamflow-gaging stations. A mathematical technique for estimating a standard low-flow statistic, August median streamflow, at partial-record streamflow-gaging stations and short-term continuous-record streamflow-gaging stations was applied by relating base-flow measurements at these stations to concurrent daily streamflows at nearby long-term continuous-record streamflow-gaging stations (index stations). Generalized least-squares regression analysis (GLS) was used to relate estimates of August median streamflow at streamflow-gaging stations to basin characteristics at these same stations to develop equations that can be applied to estimate August median streamflow on ungaged streams. GLS accounts for different periods of record at the gaging stations and the cross correlation of concurrent streamflows among gaging stations. Thirty-one stations were used for the final regression equations. Two basin characteristics?drainage area and fraction of basin underlain by a sand and gravel aquifer?are used in the calculated regression equation to estimate August median streamflow for ungaged streams. The equation has an average standard error of prediction from -27 to 38 percent. A one-variable equation uses only drainage area to estimate August median streamflow when less accuracy is acceptable. This equation has an average standard error of prediction from -30 to 43 percent. Model error is larger than

  5. 44. Photocopied August 1978. DREDGES WORKING AT POWER HOUSE LOCATION, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    44. Photocopied August 1978. DREDGES WORKING AT POWER HOUSE LOCATION, DECEMBER 10, 1898. BY SPECIAL AGREEMENT, CONTRACTORS MASON & HODGE WERE PERMITTED TO BEGIN EXCAVATION OVER THE POWER HOUSE LOCATION WITH DREDGES, COMPLETING THE WORK LATER BEHIND THE COFFER DAM BEING CONSTRUCTED ON THE FAR RIGHT SIDE OF THE PICTURE. (21) - Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie, Chippewa County, MI

  6. Spatial variability of harmful algal blooms in Milford Lake, Kansas, July and August 2015

    USGS Publications Warehouse

    Foster, Guy M.; Graham, Jennifer L.; Stiles, Tom C.; Boyer, Marvin G.; King, Lindsey R.; Loftin, Keith A.

    2017-01-09

    uplake (Zone C), midlake (Zone B), and downlake (Zone A) parts of the lake. Overall, no consistent pattern was indicated as to which sample location (nearshore or open water) had the highest microcystin concentrations. In July, the maximum microcystin concentration observed in each zone was detected at a nearshore site, and in August, maximum microcystin concentrations in each zone were detected at an open-water site.The Kansas Department of Health and Environment uses two guidance levels (a watch and a warning level) to issue recreational public-health advisories for CyanoHABs in Kansas lakes. The levels are based on concentrations of microcystin and numbers of cyanobacteria. In July and August, discrete water-quality samples were predominantly indicative of warning status in Zone C, watch status in Zone B, and no advisories in Zone A. Regression-estimated microcystin concentrations, which provided more thorough coverage of Milford Lake (n=683–720) than discrete samples (n=21–24), generally indicated the same overall pattern. Regardless of the individual agencies sampling approach, the overall public-health advisory status of each zone in Milford Lake was similar according to the Kansas Department of Health and Environment guidance levels.

  7. Subglacial hydrology and ice stream margin locations

    NASA Astrophysics Data System (ADS)

    Perol, Thibaut; Rice, James R.; Platt, John D.; Suckale, Jenny

    2015-07-01

    Fast-flowing ice streams in West Antarctica are separated from the nearly stagnant ice in the adjacent ridge by zones of highly localized deformation known as shear margins. It is presently uncertain what mechanisms control the location of shear margins and possibly allow them to migrate. In this paper we show how subglacial hydrological processes can select the shear margin location, leading to a smooth transition from a slipping to a locked bed at the base of an ice stream. Our study uses a two-dimensional thermomechanical model in a cross section perpendicular to the direction of flow. We confirm that the intense straining at the shear margins can generate large temperate regions within the deforming ice. Assuming that the melt generated in the temperate ice collects in a drainage channel at the base of the margin, we show that a channel locally decreases the pore pressure in the subglacial till. Therefore, the basal shear strength just outside the channel, assuming a Coulomb-plastic rheology, can be substantially higher than that inferred under the majority of the stream. Results show that the additional basal resistance produced by the channel lowers the stress concentrated on the locked portion of the bed. Matching the model to surface velocity data, we find that shear margins are stable when the slipping-to-locked bed transition occurs less than 500 m away from a channel operating at an effective pressure of 200 kPa and for a hydraulic transmissivity equivalent to a basal water film of order 0.2 mm thickness.

  8. Tributary Reservoir Regulation Activities (August 1991 - July 1992)

    DTIC Science & Technology

    1992-12-01

    Syracuse to Roca to Crete bringing flash flooding to many towns and villages affecting mainly basements, streets and some city parks. The rural areas... flash flood occurred in the northwest comer the 13th. Six to possibly 10 inches of rain fell near Ludlow, causing Crooked Creek to washout culverts and...potential increased on August 3rd and Flash Flood watches were issued for much of the eastern foothills area. Locally heavy rains were reported over much

  9. Army Logistician. Volume 38, Issue 4, July-August 2006

    DTIC Science & Technology

    2006-08-01

    38, ISSUE 4 JULY–AUGUST 2006 BOARD OF DIRECTORS Chairman Major General Mitchell H . Stevenson Commander Army Combined Arms Support Command Members The...LOGISTICIAN PROFESSIONAL BULLETIN OF UNITED STATES ARMY LOGISTICS 2 The CVE inspectors look for defects in the hull— dents, gouges , holes, warping...have spent the rest of their lives justify- ing their actions. Commander Harry H . Keith was acting as the Navy’s fleet maintenance officer while

  10. Herbicides and herbicide degradation products in upper midwest agricultural streams during august base-flow conditions

    USGS Publications Warehouse

    Kalkhoff, S.J.; Lee, K.E.; Porter, S.D.; Terrio, P.J.; Thurman, E.M.

    2003-01-01

    Herbicide concentrations in streams of the U.S. Midwest have been shown to decrease through the growing season due to a variety of chemical and physical factors. The occurrence of herbicide degradation products at the end of the growing season is not well known. This study was conducted to document the occurrence of commonly used herbicides and their degradation products in Illinois, Iowa, and Minnesota streams during base-flow conditions in August 1997. Atrazine, the most frequently detected herbicide (94%), was present at relatively low concentrations (median 0.17 μg L−1). Metolachlor was detected in 59% and cyanazine in 37% of the samples. Seven of nine compounds detected in more than 50% of the samples were degradation products. The total concentration of the degradation products (median of 4.4 μg L−1) was significantly greater than the total concentration of parent compounds (median of 0.26 μg L−1). Atrazine compounds were present less frequently and in significantly smaller concentrations in streams draining watersheds with soils developed on less permeable tills than in watersheds with soils developed on more permeable loess. The detection and concentration of triazine compounds was negatively correlated with antecedent rainfall (April–July). In contrast, acetanalide compounds were positively correlated with antecedant rainfall in late spring and early summer that may transport the acetanalide degradates into ground water and subsequently into nearby streams. The distribution of atrazine degradation products suggests regional differences in atrazine degradation processes.

  11. Army Logistician. Volume 41, Issue 4, July-August 2009

    DTIC Science & Technology

    2009-08-01

    AND ADDRESS(ES) Army Logistics Management College,2401 Quarters Road,Fort Lee,VA,23801-1705 8 . PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING...unclassified c. THIS PAGE unclassified Standard Form 298 (Rev. 8 -98) Prescribed by ANSI Std Z39-18 PB 700–09–04 VOLUME 41, ISSUE 4 JULy–AUGUST...for all deaths, DUSTWUN, and missing per AR 600– 8 –1, Army Casualty Program. • Field-grade reviewer is the battalion commander or designated field

  12. Military Review. Volume 92, Number 4, July-August 2012

    DTIC Science & Technology

    2012-08-01

    Camp Blessing , Afghanistan, 27 July 2009. (U.S. Army, SPC Evan D. Marcy) AMERICA’S NATIONAL SECURITY strategy demands that our combatforces defeat...enemy at five as well as 1,000 yards with far greater pen­ etration against vehicles and other hard targets than the standard 5.56 mm NATO. You can...configuration, with a 123 gr. projectile that does not go subsonic until 1,275 yards, if you can see a target, you can theoretically hit it. MILITARY REVIEW

  13. Pathfinder. Volume 8, Number 4, July/August 2010

    DTIC Science & Technology

    2010-08-01

    protect the United States and its interests—and our international military allies who join the fight. NGA’s maps, charts, aeronautical navigation...products, force- protection graphics and other resources enable a diverse military mission set, and we take pride in that. But we bring something more to... wellhead , which is located more than 4,000 feet underwater. “NGA’s support is critical. We are providing es- sential data that the USCG depends on

  14. The July - August 2014 Mt. Etna eruptions: insights on the magmatic feeding system from geochemical and geophysical data

    NASA Astrophysics Data System (ADS)

    Zuccarello, Francesco; Cannata, Andrea; Gresta, Stefano; Palano, Mimmo; Viccaro, Marco

    2016-04-01

    The 2014 volcanic activity of Mt. Etna has been characterized by a marked change in the eruptive behavior with respect to the one that occurred during the 2011-2013 time interval. During the 2011-2013 period, the volcanic activity was characterized by the occurrence of more than 40 vigorous lava fountain episodes at the summit New South-East Crater (hereinafter NSEC). Conversely, from the end of 2013 to the end of 2014, although intense Strombolian and effusive activity took place at NSEC, the volcanic activity never culminated in sustained lava fountaining and voluminous tephra emission. The July - August 2014 eruption can be framed within such a low level of volcanic activity. This eruption started on July 5 2014, when a fissure opened on the lower eastern flank of the summit North-East Crater (hereinafter NEC), close to the fracture field of the 2008-2009 eruption. These fissures fed weak Strombolian activity and minor lava emission from two new vents located at about 3000 m elevation. On July 25, more intense Strombolian activity took place at a further vent opened close to these two vents, at 3090 m elevation. The eruption from the vents on the lower eastern flank of NEC continued until August 9. Before the end of this eruption, on 8 August a new eruptive episode started at NSEC. This last eruption, culminating during August 11-14 with vigorous Strombolian activity and lava effusion, ended on August 16. Moreover, such a contemporaneous activity at both NSEC and NEC lends credit to the existence of a shallow link between the two craters. Taking advantage from the availability of an extensive dataset of geochemical, seismic and geodetic data we have here analyzed the volcanic activity characterizing this eruptive event. This integrated, multidisciplinary study is aimed at improving the knowledge of the deeper and shallower portions of the magmatic feeding system along with the magma transfer mechanisms toward the surface.

  15. Heavy rainfall at the SRS in July, August and October of 1990

    SciTech Connect

    Addis, R.P.; Kurzeja, R.J.

    1992-01-01

    The Savannah River Site experienced intense periods of rainfall on July 25, August 22, October 10--12, and October 22--23, 1990. This report compares the rainfall from these storms with previous storms and with the 100 year rainfall estimates.

  16. Provisional hourly values of equatorial dst for July, August, September and October 1972

    NASA Technical Reports Server (NTRS)

    Sugiura, M.; Poros, D. J.

    1973-01-01

    The tabulated hourly magnetic storm-time variation (Dst) values were obtained using the four Dst stations of Hermanus, Kakioka, Honolulu, and San Juan. The provisional Dst values for July, August, and September 1972 previously published by World Data Center A and Goddard Space Flight Center are superseded by these values.

  17. Fires. A Joint Publication for U.S. Artillery Professionals. July - August 2010

    DTIC Science & Technology

    2010-07-01

    contractors, vendors and even shoppers that the city of Nu’maniyah has gone great lengths to restore its tourism industry by building along the waterfront...resbulletin Fires1 July-August 2010 • The Fires community is online 24/7. Fires Center of Excellence http://www.facebook.com

  18. Atmospheric gas. Annual report, August 1, 1992--July 31, 1993

    SciTech Connect

    Schudlich, R.; Emerson, S.

    1993-12-31

    This proposal requests support for a third year of funding to complete a modelling study of processes controlling the distribution and waters at an ocean location with detailed background measurements of biological physical properties. We determined concentrations of the gases O{sub 2}, Ar, N{sub 2}, and the stable isotope ratio ({sup 18}O/{sup 16}O) of molecular oxygen in surface waters at Station ALOHA in conjunction with the Global Ocean Flux Study (GOFS) Hawaiian Ocean Time-series project during the years 1989--90 and 1992--93, the latter currently being completed. Chemical tracers have been incorporated into an existing ocean mixed-layer model to simulate the physical processes controlling the distribution and seasonal cycle of dissolved gases in the upper ocean. The broad background of concurrent chemical, physical, and biological measurements at station ALOHA provides enough redundancy of ``ground truth`` to assess the model`s accuracy. Biological oxygen production estimated from modeled chemical tracers agrees with estimates based on measurements of carbon fluxes into the deep ocean and nitrate fluxes into the upper ocean during 1989--90, verifying for the first time the utility of chemical tracers for determining biological fluxes in the ocean. The results suggest that in the euphoric zone the net biological O{sub 2} production and CO{sub 2} consumption is 4.5 moles m{sup {minus}2}yr{sup {minus}1}. We propose to continue this project an additional year to incorporate isotope data into the simulation and to analyze the 1992--93 data.

  19. Tethered Ozonesonde Measurements During FRAPPE July-August 2014

    NASA Astrophysics Data System (ADS)

    Oltmans, S. J.; Johnson, B.; Sterling, C. W.; Cullis, P.; Hall, E. G.; Jordan, A. F.; Wendell, J.; Schnell, R. C.; McClure-Begley, A.; Thompson, A. M.

    2015-12-01

    O3 and temperature profiles were measured from tethered ozonesondes from surface to 400 m above ground level on 9 days during the summer of 2014 Colorado Front Range Air Pollution and Photochemistry Experiment (FRAPPE). The portable tethered ozonesonde system was set up at one of 3 sites located next to a Colorado Department of Public Health and Environment surface monitoring station. The day and site chosen were based on the previous day O3 and weather forecast. Measurements typically began at 8:30 AM and ended at 4:30 PM, averaging 40 profiles in one day. The ozonesonde when sampling at the surface consistently read within 0-3 ppbv of the surface monitor at each of the sites with a typical daytime range of 20-90 ppbv. The hourly values were averaged at 50 meter intervals showing O3 production rates were consistently around 8 ppbv per hour from 50 to 300 meters above ground level. On sunny, light wind days the O3 mixing ratio reached a maximum of 80-90 ppbv between 14:00 and 15:00 local time. The generally constant mixing ratio with height and highest mixing ratios above the surface indicate that photochemical O3 production was taking place throughout the profile. Continuous O3 profiles from a tall tower (5 and 300 m) and daily ozonesondes tracked O3 variability through the experiment. High O3 at each site was associated with different local wind directions. At Ft. Collins winds were generally out of the southeast, at Chatfield from the northeast, and at City Park Golf Course more variable. The tether system was developed at NOAA/ESRL to provide a cost effective method to measure O3 profiles on a continuous basis. The tether system consisted of a deep sea fishing pole, electric motor driving the reel with light-weight fishing line attached to the balloon ozonesonde, a tether control box, and laptop. The in house software package monitored data and controlled the tether speed and turn-around point based on real time GPS altitude from the transmitting radiosonde.

  20. ORNL Nuclear Safety Research and Development Program Bimonthly Report for July-August 1968

    SciTech Connect

    Cottrell, W.B.

    2001-08-17

    The accomplishments during the months of July and August in the research and development program under way at ORNL as part of the U.S. Atomic Energy Commission's Nuclear Safety Program are summarized, Included in this report are work on various chemical reactions, as well as the release, characterization, and transport of fission products in containment systems under various accident conditions and on problems associated with the removal of these fission products from gas streams. Although most of this work is in general support of water-cooled power reactor technology, including LOFT and CSE programs, the work reflects the current safety problems, such as measurements of the prompt fuel element failure phenomena and the efficacy of containment spray and pool-suppression systems for fission-product removal. Several projects are also conducted in support of the high-temperature gas-cooled reactor (HTGR). Other major projects include fuel-transport safety investigations, a series of discussion papers on various aspects of water-reactor technology, antiseismic design of nuclear facilities, and studies of primary piping and steel, pressure-vessel technology. Experimental work relative to pressure-vessel technology includes investigations of the attachment of nozzles to shells and the implementation of joint AEX-PVFX programs on heavy-section steel technology and nuclear piping, pumps, and valves. Several of the projects are directly related to another major undertaking; namely, the AEC's standards program, which entails development of engineering safeguards and the establishment of codes and standards for government-owned or -sponsored reactor facilities. Another task, CHORD-S, is concerned with the establishment of computer programs for the evaluation of reactor design data, The recent activities of the NSIC and the Nuclear Safety journal in behalf of the nuclear community are also discussed.

  1. Sediment oxygen demand in the Saddle River and Salem River watersheds, New Jersey, July-August 2008

    USGS Publications Warehouse

    Heckathorn, Heather A.; Gibs, Jacob

    2010-01-01

    Many factors, such as river depth and velocity, biochemical oxygen demand, and algal productivity, as well as sediment oxygen demand, can affect the concentration of dissolved oxygen in the water column. Measurements of sediment oxygen demand, in conjunction with those of other water-column water-quality constituents, are useful for quantifying the mechanisms that affect in-stream dissolved-oxygen concentrations. Sediment-oxygen-demand rates are also needed to develop and calibrate a water-quality model being developed for the Saddle River and Salem River Basins in New Jersey to predict dissolved-oxygen concentrations. This report documents the methods used to measure sediment oxygen demand in the Saddle River and Salem River watersheds along with the rates of sediment oxygen demand that were obtained during this investigation. In July and August 2008, sediment oxygen demand was measured in situ in the Saddle River and Salem River watersheds. In the Saddle River Basin, sediment oxygen demand was measured twice at two sites and once at a third location; in the Salem River Basin, sediment oxygen demand was measured three times at two sites and once at a third location. In situ measurements of sediment oxygen demand in the Saddle River and Salem River watersheds ranged from 0.8 to 1.4 g/m2d (grams per square meter per day) and from 0.6 to 7.1 g/m2d at 20 degrees Celsius, respectively. Except at one site in this study, rates of sediment oxygen demand generally were low. The highest rate of sediment oxygen demand measured during this investigation, 7.1 g/m2d, which occurred at Courses Landing in the Salem River Basin, may be attributable to the consumption of oxygen by a large amount of organic matter (54 grams per kilogram as organic carbon) in the streambed sediments or to potential error during data collection. In general, sediment oxygen demand increased with the concentration of organic carbon in the streambed sediments. Repeated measurements made 6 to 7 days apart

  2. Shoreline surveys of oil-impacted marsh in southern Louisiana, July to August 2010

    USGS Publications Warehouse

    Kokaly, Raymond F.; Heckman, David; Holloway, JoAnn; Piazza, Sarai C.; Couvillion, Brady R.; Steyer, Gregory D.; Mills, Christopher T.; Hoefen, Todd M.

    2011-01-01

    This report describes shoreline surveys conducted in the marshes of Louisiana in areas impacted by oil spilled from the Deepwater Horizon offshore oil drilling platform in the Gulf of Mexico. Three field expeditions were conducted on July 7-10, August 12-14, and August 24-26, 2010, in central Barataria Bay and the Bird's Foot area at the terminus of the Mississippi River delta. This preliminary report includes locations of survey points, a photographic record of each site, field observations of vegetation cover and descriptions of oil coverage in the water and on plants, including measurements of the distance of oil penetration from the shoreline. Oiling in Barataria Bay marshes ranged from lightly oiled sections of stems of the predominant species Spartina alterniflora and Juncus roemerianus to wide zones of oil-damaged canopies and broken stems penetrating as far as 19 m into the marsh. For the 34 survey points in Barataria Bay where dimensions of oil damaged zones were measured, the depth of the oil-damaged zone extended, on average, 6.7 m into the marsh, with a standard deviation of 4.5 m. The median depth of penetration was 5.5 m. The extent to which the oil-damaged zone stretched along the shore varied with location but often extended more than 100 m parallel to the shoreline. Oil was observed on the marsh sediment at some sites in Barataria Bay. This oiled sediment was observed both above and a few centimeters below the water surface depending on the level of the tide. Phragmites australis was the dominant vegetation in oil-impacted zones in the Bird's Foot area of the Mississippi River delta. Oiling of the leaves and portions of the thick stems of P. australis was observed during field surveys. In contrast to the marshes of Barataria Bay, fewer areas of oil-damaged canopy were documented in the Bird's Foot area. In both areas, oil was observed to be persistent on the marsh plants from the earliest (July 7) to the latest (August 24) surveys. At sites

  3. Attosecond Physics 2009 (July 28 to August 1, 2009, at Kansas State U/Manhattan)

    SciTech Connect

    Ben-Itzhak, Itzik

    2009-09-01

    The 2nd Attosecond Physics conference was hosted by the J.R. Macdonald Laboratory group from July 28 to August 1, 2009, at Kansas State University,Manhattan, Kansas about 215 participants from all over the world attended this meeting. DOE provided support for U.S. graduate students and post doctoral fellows attending this meeting. No papers/proceedings were published from this conference.

  4. K Basins Groundwater Monitoring Task, K Basins Closure Project: Report for July, August, and September 2006

    SciTech Connect

    Peterson, Robert E.

    2006-12-08

    This report provides information on groundwater monitoring at the K Basins during July, August, and September 2006. Conditions remain very similar to those reported in the previous quarterly report, with no evidence in monitoring results to suggest groundwater impact from current loss of basin water to the ground. The K Basins monitoring network will be modified in the coming quarters as a consequence of remedial action at KE Basin, i.e., removal of sludge and basin demolition.

  5. Volcanic unrest leading to the July-August 2001 lateral eruption at Mt. Etna: Seismological constraints

    NASA Astrophysics Data System (ADS)

    Sicali, Simona; Barberi, Graziella; Cocina, Ornella; Musumeci, Carla; Patanè, Domenico

    2015-10-01

    A close relationship between earthquake swarms, volcanic eruptions, and ground deformation at Mt. Etna was well documented shortly before the beginning of the July-August 2001 eruption. Past experiences at this volcano suggest how magma/dike intrusion in the shallow crust or in the upper part of the volcanic pile normally occurs after several years/months of internal recharging. Since seismic investigations provide a means to study the scale and origin of stress perturbations at active volcanoes, allowing to better investigating the preparation phase of an eruption, in this paper, we performed a close examination of the seismic activity recorded at Mt. Etna in the months preceding the 2001 eruption and in particular between November 2000 and July 2001. After integrating data recorded by the two networks operating during that time and run by the Istituto Internazionale di Vulcanologia and SISTEMA POSEIDON, we relocated 522 earthquakes by using the tomoDD code in a 3D velocity model, and then we computed their fault plane solutions. The application of different selection criteria enabled obtaining a good-quality revised data set consisting of 111 fault plane solutions. The high-precision locations identified well-defined seismic clusters, in different periods, suggesting a link with the magma migration from a depth of 8-13 km b.s.l. towards shallower zones. Moreover, the computed maximum compressive stress axis, as inferred from earthquake focal mechanisms, indicated a roughly W-E-oriented σ1. This findings reflect an overpressure of the mid to shallow crust due to the progressive magma uprising in central portion of the volcano and also highlighted a rotation of the local stress field with respect to the regional one N-S trending. In addition, P-axis distribution pointed out the presence of a center of pressure located to the south of the Central Craters. These results provide particularly compelling evidence for a direct causal link between pressurization of the

  6. Base flow, water quality, and streamflow gain and loss of the Buffalo River, Arkansas, and selected tributaries, July and August 2003

    USGS Publications Warehouse

    Moix, Matthew W.; Galloway, Joel M.

    2005-01-01

    A study of the Buffalo National River in north-central Arkansas was conducted between July 28-30 and August 13-15, 2003, to characterize the base-flow and water-quality characteristics and streamflow gain and loss in the Buffalo River. The study was separated into two time periods because of a precipitation event that occurred on the afternoon of July 30 causing appreciable storm runoff. Streamflow was separated to identify base-flow and surface-runoff components using the Base Flow Index hydrograph separation computer program. Base-flow separation analyses indicated annual variability in streamflow throughout the Buffalo River Basin. Based upon these analyses, total and base flow were below average for the mainstem of the river and Richland Creek during the 2003 water year. Waterquality samples were collected from 25 surface-water sites on the Buffalo River and selected tributaries. Most nutrient concentrations for the mainstem of the Buffalo River were near or below the minimum reporting level and were less than the median flow-weighted concentration for relatively undeveloped stream basins in the United States. Streamflow measurement data were collected at 44 locations along the mainstem of the Buffalo River and at points of inflow (prior to confluence with the mainstem) to identify gaining and losing reaches. Seven gaining and five losing reaches were identified for the Buffalo River. Additionally, surface flow on the mainstem of the Buffalo River was diverted to subsurface flow on the mainstem at two locations (river miles 73.6 and 131.6) where the mainstem was found to be dry. Reaches throughout the length of the river had calculated gains or losses that were less than the sum of measurement errors for the respective reaches of river.

  7. 2. VIEW OF THE LOCATION WHERE A STREAM CROSSING WILL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. VIEW OF THE LOCATION WHERE A STREAM CROSSING WILL BE CONSTRUCTED FOR TRUCK HAULING PURPOSES DURING THE SALE AND WHERE THE AREA WILL BE RETURNED TO ITS NATURAL STATE AFTER HAULING IS COMPLETED. LOCATED IMMEDIATELY SOUTH OF HELIPAD #13. FACING NORTH 5 WEST (355ø). - Genoa Peak Road, Spur, Glenbrook, Douglas County, NV

  8. Final Technical Report on Heuristic Programming Project for Contract Period August 1, 1973 through July 31, 1977

    DTIC Science & Technology

    1977-10-01

    Report for Contract Period August 1, 1973 through July 31, 1977 Principal Investigators: 7A;eSo Edward A. Feigenbaum NTIS CRAAI- Joshua Lederberg 0.48...Technical August 1, 1973 through July 31, 1977 6. PERFORMING ORG. REPORT NUMBER 7. AUTHOR(s) S. CONTRACT OR GRANT NUMBER(s) Edward A. Feigenbaum Joshua ... Lederberg DAHCt3-C-0435 Bruce Buchanan 9. PERFORMING ORGANIZATION NAME AND ADDRESS 10. PROGRAM ELEMENT. PROJECT, TASK Stanford University AREA a WORK

  9. Proceedings of Summer Institute of Particle Physics, July 27-August 7, 1981: the strong interactions

    SciTech Connect

    Mosher, A.

    1982-01-01

    The ninth SLAC Summer Institute on Particle Physics was held in the period July 27 to August 7, 1981. The central topic was the strong interactions with the first seven days spent in a pedagogic mode and the last three in a topical conference. In addition to the morning lectures on experimental and theoretical aspects of the strong interactions, three were lectures on machine physics; this year it was electron-positron colliding beam machines, both storage rings and linear colliders. Twenty-three individual items from the meeting were prepared separately for the data base. (GHT)

  10. The Arctic Boundary Layer Expedition (ABLE 3A) - July-August 1988

    NASA Technical Reports Server (NTRS)

    Harriss, R. C.; Wofsy, S. C.; Bartlett, D. S.; Shipham, M. C.; Jacob, D. J.; Hoell, J. M., Jr.; Bendura, R. J.; Drewry, J. W.; Mcneal, R. J.; Navarro, R. L.

    1992-01-01

    The Arctic Boundary Layer Expedition (ABLE 3A), conducted in Arctic and sub-Arctic regions of North America and Greenland during July and August 1988, was the first comprehensive investigation of the sources, sinks, and distribution of trace gas and aerosol chemical species in a northern high-latitude region during summer months. The experimental design emphasized the role of biosphere-atmosphere interactions in determining the chemical composition of the troposphere and in processes which influence the tropospheric O3 budget. This paper reports the overall experimental design of ABLE 3A and includes a brief overview of results.

  11. NREL photovoltaic subcontract reports: Abstracts and document control information, 1 August 1992--31 July 1993

    SciTech Connect

    Not Available

    1993-09-01

    This report contains document control information and abstracts for the National Renewable Energy Laboratory (NREL) subcontracted photovoltaic (PV) program publications. It also lists source information on additional publications that describe US Department of Energy (DOE) PV research activities. It is not totally exhaustive, so it lists NREL contacts for requesting further information on the DOE and NREL PV programs. This report covers the period from August 1, 1992, through July 31, 1993. This report is published periodically, with the previous one covering the period from August 1, 1991, through July 31, 1992. The purpose of continuing this type of publication is to help keep people abreast of specific PV interests, while maintaining a balance on the costs to the PV program. The information in this report is organized under PV technology areas: Amorphous Silicon Research; Polycrystalline Thin Films (including copper indium diselenide, cadmium telluride, and thin-film silicon); Crystalline Materials and Advanced Concepts (including silicon, gallium arsenide, and other group III-V materials); PV Manufacturing Technology Development (which may include manufacturing information for various types of PV materials).

  12. First Results From the SAGER-OBS Deep Seismic Cruise (July/August 2006) Offshore Sumatra

    NASA Astrophysics Data System (ADS)

    Klingelhoefer, F.; Dessa, J.; Permana, H.; Graindorge, D.; Dean, S.; White, N.; Carton, H.; Singh, S.; Aouji, O.; Aryawan, K. G.; Begot, J.; Beguery, L.; Burchell, A.; Chaubey, A. K.; Chauhan, A.; Crozon, J.; Daniel, R.; Fernagu, P.; Galih, D. R.; Greenroyd, C. J.; Laesanpura, A.; Pelleau, P.; Prihantono, J.; Royle, G.; Shankar, U.

    2006-12-01

    The 26th December 2004 great Sumatra earthquake (Mw=9.1) is among the 4 largest earthquakes ever recorded and the largest of the last 40~years. It initiated at a depth of 20-30~km and ruptured about 1300~km of the Indo-Australian/Sunda plate boundary, from the vicinity of Simeulue Island up to the north of Andaman Islands. The SAGER program is part of an ongoing international effort to study the rupture zone of this great earthquake. The main objective of the SAGER-OBS cruise on board R/V Marion Dufresne (July 7th to August 9th 2006) was the acquisition of deep penetrating wide-angle seismic data to constrain the crustal and upper mantle structures in the epicentral area and in the zone of greatest co-seismic slip. Forward and inverse modeling of the data will help to identify potential heterogeneities along the subduction thrust, such as subducted topographical features, to obtain the velocity structure within the subducting lithosphere and overlying deep fore-arc crustal zones. The cruise was performed simultaneously with the acquisition of coincident reflection seismic profiles by the Western-Geco/Schlumberger's "Searcher" seismic vessel on the same profiles (Singh et al., 2006). During the cruise, 56 ocean-bottom seismometers (OBS) were deployed successively along two profiles located north of Simeulue Island (250~km length) and north of Sumatra, close to the limit of Indonesian waters (520~km-long profile). The two profiles are sub-parallel (oriented NE-SW), roughly perpendicular to the margin, and extend well onto the oceanic basin; the northern one crosses the submerged arc north of Sumatra. Seismic shots along the profiles were generated using a 8260~cu inch air-gun array. All OBS's were successfully recovered. The resulting data quality is good with deep penetrating arrivals on most of the instruments. Additionally, shots fired by the second vessel while acquiring the coincident reflection profiles were recorded by the instruments deployed along the

  13. Advanced turbine systems program conceptual design and product development. Annual report, August 1994--July 1995

    SciTech Connect

    1995-11-01

    This report summarizes the tasks completed under this project during the period from August 1, 1994 through July 31, 1994. The objective of the study is to provide the conceptual design and product development plan for an ultra high efficiency, environmentally superior and cost-competitive industrial gas turbine system to be commercialized by the year 2000. The tasks completed include a market study for the advanced turbine system; definition of an optimized recuperated gas turbine as the prime mover meeting the requirements of the market study and whose characteristics were, in turn, used for forecasting the total advanced turbine system (ATS) future demand; development of a program plan for bringing the ATS to a state of readiness for field test; and demonstration of the primary surface recuperator ability to provide the high thermal effectiveness and low pressure loss required to support the proposed ATS cycle.

  14. NREL photovoltaic subcontract reports: Abstracts and document control information, 1 August 1991--31 July 1992

    SciTech Connect

    Not Available

    1992-08-01

    This report contains document control information and abstracts for the National Renewable Energy Laboratory (NREL) subcontracted photovoltaic program publications. It also lists source information on additional publications that describe US Department of Energy (DOE) PV research activities. It is not totally exhaustive, so it lists NREL contacts for requesting further information on the DOE and NREL PV programs. This report covers the period from August 1, 1991, through July 31, 1992. The purpose of continuing this type of publication is to help people keep abreast of specific PV interests, while maintaining a balance on the costs to the PV program. The information in this report is organized under PV technology areas: Amorphous silicon research; polycrystalline thin films (including copper indium diselenide, cadmium telluride, and thin-film silicon); crystalline materials and advanced concepts (including silicon, gallium arsenide, and other group III-V materials); and PV manufacturing technology development (which may include manufacturing information for various types of PV materials).

  15. August Median Streamflow on Ungaged Streams in Eastern Aroostook County, Maine

    USGS Publications Warehouse

    Lombard, Pamela J.; Tasker, Gary D.; Nielsen, Martha G.

    2003-01-01

    Methods for estimating August median streamflow were developed for ungaged, unregulated streams in the eastern part of Aroostook County, Maine, with drainage areas from 0.38 to 43 square miles and mean basin elevations from 437 to 1,024 feet. Few long-term, continuous-record streamflow-gaging stations with small drainage areas were available from which to develop the equations; therefore, 24 partial-record gaging stations were established in this investigation. A mathematical technique for estimating a standard low-flow statistic, August median streamflow, at partial-record stations was applied by relating base-flow measurements at these stations to concurrent daily flows at nearby long-term, continuous-record streamflow- gaging stations (index stations). Generalized least-squares regression analysis (GLS) was used to relate estimates of August median streamflow at gaging stations to basin characteristics at these same stations to develop equations that can be applied to estimate August median streamflow on ungaged streams. GLS accounts for varying periods of record at the gaging stations and the cross correlation of concurrent streamflows among gaging stations. Twenty-three partial-record stations and one continuous-record station were used for the final regression equations. The basin characteristics of drainage area and mean basin elevation are used in the calculated regression equation for ungaged streams to estimate August median flow. The equation has an average standard error of prediction from -38 to 62 percent. A one-variable equation uses only drainage area to estimate August median streamflow when less accuracy is acceptable. This equation has an average standard error of prediction from -40 to 67 percent. Model error is larger than sampling error for both equations, indicating that additional basin characteristics could be important to improved estimates of low-flow statistics. Weighted estimates of August median streamflow, which can be used when

  16. MTI Ground Truth Collection Ivanpah Dry Lake Bed, California, May, July, and August 2002

    SciTech Connect

    David L. Hawley

    2002-10-01

    A multi-agency collaboration successfully completed a series of ground truth measurements at the Ivanpah Dry Lake bed during FY 2002. Four collection attempts were made: two in May, one in July, and one in August. The objective was to collect ground-based measurements and airborne data during Multispectral Thermal Imager satellite overpasses. The measurements were to aid in the calibration of the satellite data and in algorithm validation. The Remote Sensing Laboratory, Las Vegas, Nevada; the National Aeronautics and Space Administration; Los Alamos National Laboratory; and the University of Arizona participated in the effort. Field instrumentation included a sun photometer on loan from the University of Arizona and the Remote Sensing Laboratory's radiosonde weather balloon, weather station, thermal infrared radiometers, and spectral radiometer. In addition, three reflectance panels were deployed; certain tests used water baths set at two different temperatures. Local weather data as well as sky photography were collected. May presented several excellent days; however, it was later learned that tasking for the satellite was not available. A combination of cloud cover, wind, and dusty conditions limited useful data collections to two days, August 28 and 29. Despite less-than- ideal weather conditions, the data for the Multispectral Thermal Imager calibration were obtained. A unique set of circumstances also allowed data collection during overpasses of the LANDSAT7 and ASTER satellites.

  17. Drainage areas of streams at selected locations in Kentucky

    USGS Publications Warehouse

    Bower, David E.; Jackson, W.H.

    1981-01-01

    The drainage areas for more than 2,000 selected sites throughout Kentucky were determined. Areas of limestone terrain characterized by sinkholes are indicated in basins where they have been determined. Each location is referenced by U.S. Geological Survey station number (where assigned), latitude, longitude, county code, topographic quadrangle, river distance, and in some cases by nearby town or landmark. All values are given in both English and metric units and an alphabetical index by stream name is provided. (USGS)

  18. Storm and flood of July 31-August 1, 1976, in the Big Thompson River and Cache la Poudre River basins, Larimer and Weld Counties, Colorado

    USGS Publications Warehouse

    McCain, Jerald F.; Shroba, R.R.

    1979-01-01

    PART A: Devastating flash floods swept through the canyon section of Larimer County in north-central Colorado during the night of July 31-August I, 1976, causing 139 deaths, 5 missing persons, and more than $35 million in total damages. The brunt of the storms occurred over the Big Thompson River basin between Drake and Estes Park with rainfall amounts as much as 12 inches being reported during the storm period. In the Cache la Poudre River basin to the north, a rainfall amount of 10 inches was reported for one locality while 6 inches fell over a widespread area near the central part of the basin. The storms developed when strong low-level easterly winds to the rear of a polar front pushed a moist, conditionally unstable airmass upslope into the Front Range of the Rocky Mountains. Orographic uplift released the convective instability, and light south-southeasterly winds at middle and upper levels allowed the storm complex to remain nearly stationary over the foothills for several hours. Minimal entrainment of relatively moist air at middle and upper levels, very low cloud bases, and a slightly tilted updraft structure contributed to a high precipitation efficiency. Intense rainfall began soon after 1900 MDT (Mountain Daylight Time) in the Big Thompson River and the North Fork Cache la Poudre River basins. A cumulative rainfall curve developed for Glen Comfort from radar data indicates that 7.5 inches of rain fell during the period 1930-2040 MDT on July 31. In the central part of the storm area west of Fort Collins, the heaviest rainfall began about 2200 MDT on July 31 and continued until 0100 MDT on August 1. Peak discharges were extremely large on many streams in the storm area-exceeding previously recorded maximum discharges at several locations. The peak discharge of the Big Thompson River at the gaging station at the canyon mouth, near Drake was 31,200 cubic feet per second or more than four times the previous maximum discharge of 7,600 cubic feet per second at

  19. June and August median streamflows estimated for ungaged streams in southern Maine

    USGS Publications Warehouse

    Lombard, Pamela J.

    2010-01-01

    Methods for estimating June and August median streamflows were developed for ungaged, unregulated streams in southern Maine. The methods apply to streams with drainage areas ranging in size from 0.4 to 74 square miles, with percentage of basin underlain by a sand and gravel aquifer ranging from 0 to 84 percent, and with distance from the centroid of the basin to a Gulf of Maine line paralleling the coast ranging from 14 to 94 miles. Equations were developed with data from 4 long-term continuous-record streamgage stations and 27 partial-record streamgage stations. Estimates of median streamflows at the continuous-record and partial-record stations are presented. A mathematical technique for estimating standard low-flow statistics, such as June and August median streamflows, at partial-record streamgage stations was applied by relating base-flow measurements at these stations to concurrent daily streamflows at nearby long-term (at least 10 years of record) continuous-record streamgage stations (index stations). Weighted least-squares regression analysis (WLS) was used to relate estimates of June and August median streamflows at streamgage stations to basin characteristics at these same stations to develop equations that can be used to estimate June and August median streamflows on ungaged streams. WLS accounts for different periods of record at the gaging stations. Three basin characteristics-drainage area, percentage of basin underlain by a sand and gravel aquifer, and distance from the centroid of the basin to a Gulf of Maine line paralleling the coast-are used in the final regression equation to estimate June and August median streamflows for ungaged streams. The three-variable equation to estimate June median streamflow has an average standard error of prediction from -35 to 54 percent. The three-variable equation to estimate August median streamflow has an average standard error of prediction from -45 to 83 percent. Simpler one-variable equations that use only

  20. Positions of Asteroids Observed in July/August 1992 with the GPO Telescope at the ESO Observatory in Chile

    NASA Astrophysics Data System (ADS)

    Debehogne, H.; Woszczyk, A.

    1994-10-01

    The paper contains the results of photographic astrometric observations of asteroids obtained with the GPO telescope at ESO-La Silla Observatory during the period July 26 -- August 6, 1992. 213 positions of 41 objects are given. The method of the reduction of the observations is described.

  1. African Regional Seminar for Advanced Training In Systematic Curriculum Development and Evaluation. (Achimota, Ghana, 14 July--15 August 1975). Report.

    ERIC Educational Resources Information Center

    Swedish International Development Authority (SIDA).

    This report summarizes the African Regional Seminar for Advanced Training in Systematic Curriculum Development and Evaluation that was held at Achimota, Ghana, July 14-August 15 1975. Attending the seminar were 67 participants from 12 African countries, including Cameroon, Gambia, Ghana, Kenya, Liberia, Malawi, Nigeria, Sierra Leone, Swaziland,…

  2. African Regional Seminar for Advanced Training In Systematic Curriculum Development and Evaluation. (Achimota, Ghana, 14 July--15 August 1975). Report.

    ERIC Educational Resources Information Center

    Swedish International Development Authority (SIDA).

    This report summarizes the African Regional Seminar for Advanced Training in Systematic Curriculum Development and Evaluation that was held at Achimota, Ghana, July 14-August 15 1975. Attending the seminar were 67 participants from 12 African countries, including Cameroon, Gambia, Ghana, Kenya, Liberia, Malawi, Nigeria, Sierra Leone, Swaziland,…

  3. Transport of nitrate in the Mississippi river in July-August 1999

    USGS Publications Warehouse

    Kendall, Carol; Böhlke, John Karl; McMahon, Peter B.; Coupe, Richard H.; Battaglin, William A.

    2013-01-01

    Lagrangian sampling was conducted on the Mississippi River in late July through early August 1999 to test the hypothesis that nitrate (NO3-) is transported conservatively in the Mississippi River. Three different approaches were pursued to test the hypothesis: (1) a mass balance for NO3 was evaluated for evidence of net gains and losses, (2) stable isotopes of NO3 were measured (δ15N and δ18O) to determine if fractionation occurred, and (3) the concentrations of dissolved gases (N2O, N2 and Ar) in river water were measured and compared to theoretical equilibrium concentrations. Integrated water samples and flow measurements were obtained at 10 sites on the Mississippi River and 7 sites near the mouths of major tributaries from northern Iowa to southern Louisiana, a distance of about 2,250 river kilometers. Mass balance calculations indicate that more than 80 percent of the NO3 mass discharged from the Mississippi River (1,930 metric tons/day) during the study period originated in the first 500 river kilometers of the study reach. The mass balance calculations alsoindicate that NO3- was not lost from the water column upstream of Vicksburg, MS, but that there might have been some loss of NO3- in the lower 700 kilometers ofthe study reach. The stable isotope ratios of N and O (δ15N and δ18O) of NO3- were consistent with mixing and transport in the absence of fractionating gains or losses. The concentrations of nitrogen (N2) and argon (Ar) dissolved in river water decreased in the downstream direction, approximately in equilibrium with air at increasing temperatures, giving no evidence of gains or losses of N2 by nitrogen fixation or denitrification. Nitrous oxide (N2O) concentrations in the Mississippi River were approximately 26 to 200 percent of air saturation, indicating relatively low net production by combination of nitrification and denitrification. Results from this study indicate that most (>90%) of theNO3- that entered

  4. Neutron scattering studies in the actinide region. Progress report, August 1, 1991--July 31, 1994

    SciTech Connect

    Kegel, G.H.R.; Egan, J.J.

    1994-09-01

    During the period August 1, 1991 to July 31, 1994 the authors report progress on the following: (a) prompt fission neutron energy spectra for {sup 235}U and {sup 239}Pu; (b) two-parameter measurement of nuclear lifetimes; (c) `black` neutron detector; (d) data reduction techniques for neutron scattering experiments; (e) elastic and inelastic neutron scattering studies in {sup 197}Au; (f) elastic and inelastic neutron scattering studies in {sup 239}Pu; (g) neutron induced defects in silicon dioxide MOS structures; (h) response of a {sup 235}U fission chamber near reaction thresholds; (i) efficiency calibration of a liquid scintillation detector using the WNR facility at LAMPF; (j) prompt fission neutron energy spectrum measurements below the incident neutron energy; (k) multi-parameter data acquisition system; (l) accelerator improvements; (m) non-DOE supported research. Eight Ph.D. dissertations and two M.S. theses were completed during the report period. Publications consisted of 6 journal articles, 10 conference proceedings, and 19 abstracts of presentations at scientific meetings. One invited talk was given.

  5. Physician practices in requesting stool samples for patients with acute gastroenteritis, France, August 2013-July 2014.

    PubMed

    Van Cauteren, D; Turbelin, C; Fonteneau, L; Hanslik, T; De Valk, H; Blanchon, T

    2015-09-01

    A better understanding of physician practices in requesting stool samples for patients with acute gastroenteritis (AG) is needed to more accurately interpret laboratory-based surveillance data. A survey was conducted in General Practitioners (GPs) between August 2013 and July 2014 to estimate the proportion of stool samples requested for patients with AG and to identify factors associated with GP requests for a stool sample. National health insurance (NHI) data together with surveillance data from a French Sentinel GP network were also used to estimate the proportion of stool samples requested. This proportion was estimated at 4·3% in the GP survey and 9·1% (95% confidence interval 8·7-9·6) using NHI data. Multivariate analysis indicated that the ratio of stool samples requested was almost five times higher in patients with bloody diarrhoea and 10-20 times higher in patients with a long duration of illness before consultation. Laboratory-based surveillance data underestimates the actual burden of disease as fewer than one in 10 AG cases consulting their GP will be requested to submit a stool sample for laboratory testing. This underestimation varies by pathogen as stool samples are more frequently requested for severe illness.

  6. Naturally fractured tight gas reservoir detection optimization. Annual report, August 1994--July 1995

    SciTech Connect

    1995-09-01

    This report details the field work undertaken Blackhawk Geosciences and Lynn, Inc. during August 1994 to July 1995 at a gas field in the Wind River Basin in central Wyoming. The work described herein consisted of four parts: 9C VSP in a well at the site; additional processing of the previously recorded 3D P-wave survey on the site and Minivibrator testing; and planning and acquisition of a 3-D, 3-C seismic survey. The objectives of all four parts were to characterize the nature of anisotropy in the reservoir. With the 9C VSP, established practices were used to achieve this objective in the immediate vicinity of the well. The additional processing of the 3-D uses developmental techniques to determine areas of fractures in 3-D surveys. With the multicomponent studies, tests were conducted to establish the feasibility of surface recording of the anisotropic reservoir rocks. The 3-D, 3-C survey will provide both compressional and shear wave data sets over areas of known fracturing to verify the research.

  7. Green River air quality model development: meteorological and tracer data, July/August 1982 field study in Brush Valley, Colorado

    SciTech Connect

    Whiteman, C.D.; Lee, R.N.; Orgill, M.M.; Zak, B.D.

    1984-06-01

    Meteorological and atmospheric tracer studies were conducted during a 3-week period in July and August of 1982 in the Brush Creek Valley of northwestern Colorado. The objective of the field experiments was to obtain data to evaluate a model, called VALMET, developed at PNL to predict dispersion of air pollutants released from an elevated stack located within a deep mountain valley in the post-sunrise temperature inversion breakup period. Three tracer experiments were conducted in the valley during the 2-week period. In these experiments, sulfur hexafluoride (SF/sub 6/) was released from a height of approximately 100 m, beginning before sunrise and continuing until the nocturnal down-valley winds reversed several hours after sunrise. Dispersion of the sulfur hexafluoride after release was evaluated by measuring SF/sub 6/ concentrations in ambient air samples taken from sampling devices operated within the valley up to about 8 km down valley from the source. An instrumented research aircraft was also used to measure concentrations in and above the valley. Tracer samples were collected using a network of radio-controlled bag sampling stations, two manually operated gas chromatographs, a continuous SF/sub 6/ monitor, and a vertical SF/sub 6/ profiler. In addition, basic meteorological data were collected during the tracer experiments. Frequent profiles of vertical wind and temperature structure were obtained with tethered balloons operated at the release site and at a site 7.7 km down the valley from the release site. 10 references, 63 figures, 50 tables.

  8. Advanced turbine systems program conceptual design and product development. Annual report, August 1993--July 1994

    SciTech Connect

    1994-11-01

    This Yearly Technical Progress Report covers the period August 3, 1993 through July 31, 1994 for Phase 2 of the Advanced Turbine Systems (ATS) Program by Solar Turbines Incorporated under DOE Contract No. DE-AC421-93MC30246. As allowed by the Contract (Part 3, Section J, Attachment B) this report is also intended to fulfill the requirements for a fourth quarterly report. The objective of Phase 2 of the ATS Program is to provide the conceptual design and product development plan for an ultra-high efficiency, environmentally superior and cost-competitive industrial gas turbine system to be commercialized in the year 2000. During the period covered by this report, Solar has completed three of eight program tasks and has submitted topical reports. These three tasks included a Project Plan submission of information required by NEPA, and the selection of a Gas-Fueled Advanced Turbine System (GFATS). In the latest of the three tasks, Solar`s Engineering team identified an intercooled and recuperated (ICR) gas turbine as the eventual outcome of DOE`s ATS program coupled with Solar`s internal New Product Introduction (NPI) program. This machine, designated ``ATS50`` will operate at a thermal efficiency (turbine shaft power/fuel LHV) of 50 percent, will emit less than 10 parts per million of NOx and will reduce the cost of electricity by 10 percent. It will also demonstrate levels of reliability, availability, maintainability, and durability (RAMD) equal to or better than those of today`s gas turbine systems. Current activity is concentrated in three of the remaining five tasks a Market Study, GFATS System Definition and Analysis, and the Design and Test of Critical Components.

  9. The Arctic Boundary Layer Expedition (ABLE-3B): July - August 1990

    NASA Technical Reports Server (NTRS)

    Harriss, R. C.; Wofsy, S. C.; Hoell, J. M., Jr.; Bendura, R. J.; Drewry, J. W.; Mcneal, R. J.; Pierce, D.; Rabine, V.; Snell, R. L.

    1994-01-01

    The Arctic Boundary Layer Expedition (ABLE) 3B used data from ground-based, aircraft, and satellite platforms to characterize the chemistry and dynamics of the troposphere in subarctic and Arctic regions of midcontinent and eastern Canada during July - August 1990. This paper reports the experimental design for ABLE 3B and a brief overview of results. The detailed results are presented in a series of papers in this issue. The chemical composition of the atmospheric mixed layer over remote tundra, boreal wetland, and forested environments was influenced by emissions of CH4 and nonmethane hydrocarbons from biogenic sources, emissions of gases and aerosols from local biomass burning, and transport of pollutants into the study areas from urban/industrial sources. Minimum concentrations of both trace gas and aerosol species in boundary layer air were associated with Arctic source areas. In the free troposphere the biospheric influence was undetectable, and major sources of chemical variability were related to long-range transport of pollutants into the study areas from biomass burning and industrial sources in Alaska and the Great Lakes regions, respectively. Minimum concentrations of both trace gas and aerosol species in the free troposphere were associated with a persistent, widespread air mass which both chemistry and air mass trajectory analyses suggested had originated in the tropical Pacific. Subsidence of air from the upper troposphere and lower stratosphere frequently enhanced ozone and influenced other trace gas and aerosol species at midtropospheric altitudes. The North American Arctic is a complex dynamical and chemical environment with considerable spatial and temporal variability in aerosol and trace gas concentrations. The use of atmospheric chemical indicators for climate change detection will require a much more comprehensive Arctic monitoring program than currently exists.

  10. Anomalous propagation conditions of electromagnetic wave observed over Bosten Lake, China in July and August, 2014

    NASA Astrophysics Data System (ADS)

    Zheng, Sun; Hui, Ning; Jing, Tang; Yong-Jie, Xie; Peng-Fei, Shi; Jian-Hua, Wang; Ke, Wang

    2016-02-01

    Atmospheric duct is a common phenomenon over large bodies of water, and it can significantly affect the performance of many radio systems. In this paper, a two-month (in July and August, 2014) sounding experiment in ducting conditions over Bosten Lake was carried out at a littoral station (41.89° N, 87.22° E) with high resolution GPS radiosondes, and atmospheric ducts were observed for the first time in this area. During the two months, surface and surface-based ducts occurred frequently over the Lake. Strong diurnal variations in ducting characteristics were noticed in clear days. Ducting occurrence was found at its lowest in the early morning and at its highest (nearly 100%) in the afternoon. Duct strength was found increasing from early morning to forenoon, and reaching its maximum in the afternoon. But contrarily, duct altitude experienced a decrease in a clear day. Then the meteorological reasons for the variations were discussed in detail, turbulent bursting was a possible reason for the duct formation in the early morning and the prevailing lake-breeze front was the main reason in the afternoon. The propagation of electromagnetic wave in a ducting environment was also investigated. A ray-tracing framework based on Runge-Kutta method was proposed to assess the performance of radio systems, and the precise critical angle and grazing angle derived from the ray-tracing equations were provided. Finally, numerical investigations on the radar performance in the observed ducting environments have been carried out with high accuracy, which demonstrated that atmospheric ducts had made great impacts on the performance of radio systems. The range/height errors for radar measurement induced by refraction have also been presented, too, which shows that the height errors were very large for trapped rays when the total range was long enough.

  11. Continuous high-resolution midlatitude-belt simulations for July-August 2013 with WRF

    NASA Astrophysics Data System (ADS)

    Schwitalla, Thomas; Bauer, Hans-Stefan; Wulfmeyer, Volker; Warrach-Sagi, Kirsten

    2017-05-01

    Increasing computational resources and the demands of impact modelers, stake holders, and society envision seasonal and climate simulations with the convection-permitting resolution. So far such a resolution is only achieved with a limited-area model whose results are impacted by zonal and meridional boundaries. Here, we present the setup of a latitude-belt domain that reduces disturbances originating from the western and eastern boundaries and therefore allows for studying the impact of model resolution and physical parameterization. The Weather Research and Forecasting (WRF) model coupled to the NOAH land-surface model was operated during July and August 2013 at two different horizontal resolutions, namely 0.03 (HIRES) and 0.12° (LOWRES). Both simulations were forced by the European Centre for Medium-Range Weather Forecasts (ECMWF) operational analysis data at the northern and southern domain boundaries, and the high-resolution Operational Sea Surface Temperature and Sea Ice Analysis (OSTIA) data at the sea surface.The simulations are compared to the operational ECMWF analysis for the representation of large-scale features. To analyze the simulated precipitation, the operational ECMWF forecast, the CPC MORPHing (CMORPH), and the ENSEMBLES gridded observation precipitation data set (E-OBS) were used as references.Analyzing pressure, geopotential height, wind, and temperature fields as well as precipitation revealed (1) a benefit from the higher resolution concerning the reduction of monthly biases, root mean square error, and an improved Pearson skill score, and (2) deficiencies in the physical parameterizations leading to notable biases in distinct regions like the polar Atlantic for the LOWRES simulation, the North Pacific, and Inner Mongolia for both resolutions.In summary, the application of a latitude belt on a convection-permitting resolution shows promising results that are beneficial for future seasonal forecasting.

  12. Western gas sands project. Status report, July-August-September 1981

    SciTech Connect

    1981-03-01

    The progress during July, August and September 1981 on increasing gas production from low permeability gas sands of the Western United States, is summarized in this edition of the WGSP Quarterly Status Report. During the quarter, CK GeoEnergy completed the field work in the Rifle Gap area near Rifle, Colorado, as well as the Draft Phase VI report covering the prognosis about reservoir geometry in the Multi-Well site area. The improved pressure coring system project, officially terminated Sept. 30. Accomplishments included increased capabilities for the pressure core barrel, improvements in the low invasion fluid plus various laboratory core intrusion studies and improved designs for PDC drill bits. At Lawrence Livermore National Laboratory, the P/sup 2/L/sup 2/ system described last quarter was evaluated further and the decision has been made to abandon further investigation. The Los Alamos National Laboratory Ceramics Materials Group is preparing to fabricate a ceramic sample with cylindrical pores of specified diameters. The NMR data on this type sample will contribute to a better understanding of the parameters affecting NMR relaxation rates in porous media. During the quarter, modifications were made in the operating and application software of the DOE Well Test Facility, which will support additions to the PDP-11/10 computer system. The Multi-Well Experiment well was spudded on Sept. 13 and by Sept. 30, total depth was 3358 ft. Coring operations are expected to begin at a depth of 4150 ft. At the Nevada Test Site, Sandia National Laboratories completed four additional coreholes for the Fluid Mechanics/ Proppant Transport Experiments.

  13. Caspar Creek project stream ecology phase progress report, July 1, 1965 - June 30, 1966

    Treesearch

    Richard L. Ridenhour

    1966-01-01

    A preliminary progress report of the research on the stream ecology of Caspar Creek by Humboldt State College was submitted by Dr. John DeWitt in December,1965, (DeWitt 1965). Further analyses of data collected during the summer of 1965 allows a more complete report to be made at this time. Although the contract was for the period July 1, 1965 to June 30, 1966, field...

  14. Observations of the eruptions of July 22 and August 7, 1980, at Mount St. Helens, Washington

    USGS Publications Warehouse

    Hoblitt, Richard P.

    1986-01-01

    The explosive eruptions of July 22 and August 7, 1980, at Mount St. Helens, Wash., both included multiple eruptive pulses. The beginnings of three of the pulses-two on July 22 and one on August 7-were witnessed and photographed. Each of these three began with a fountain of gases and pyroclasts that collapsed around the vent and generated a pyroclastic density flow. Significant vertical-eruption columns developed only after the density flows were generated. This behavior is attributable to either an increase in the gas content of the eruption jet or a decrease in vent radius with time. An increase in the gas content may have occurred as the vent was cleared (by expulsion of a plug of pyroclasts) or as the eruption began to tap deeper, gas-rich magma after first expelling the upper, gas-depleted part of the magma body. An effective decrease of the vent radius with time may have occurred as the eruption originated from progressively deeper levels in the vent. All of these processes-vent clearing; tapping of deeper, gas-rich magma; and effective decrease in vent radius-probably operated to some extent. A 'relief-valve' mechanism is proposed here to account for the occurrence of multiple eruptive pulses. This mechanism requires that the conduit above the magma body be filled with a bed of pyroclasts, and that the vesiculation rate in the magma body be inadequate to sustain continuous eruption. During a repose interval, vesiculation of the magma body would cause gas to flow upward through the bed of pyroclasts. If the rate at which the magma produced gas exceeded the rate at which gas escaped to the atmosphere, the vertical pressure difference across the bed of pyroclastic debris would increase, as would the gas-flow rate. Eventually a gas-flow rate would be achieved that would suddenly diminish the ability of the bed to maintain a pressure difference between the magma body and the atmosphere. The bed of pyroclasts would then be expelled (that is, the relief valve would

  15. Attribution of the July-August 2013 heat event in Central and Eastern China to anthropogenic greenhouse gas emissions

    NASA Astrophysics Data System (ADS)

    Ma, Shuangmei; Zhou, Tianjun; Stone, Dáithí A.; Angélil, Oliver; Shiogama, Hideo

    2017-05-01

    In the midsummer of 2013, Central and Eastern China (CEC) was hit by an extraordinary heat event, with the region experiencing the warmest July-August on record. To explore how human-induced greenhouse gas emissions and natural internal variability contributed to this heat event, we compare observed July-August mean surface air temperature with that simulated by climate models. We find that both atmospheric natural variability and anthropogenic factors contributed to this heat event. This extreme warm midsummer was associated with a positive high-pressure anomaly that was closely related to the stochastic behavior of atmospheric circulation. Diagnosis of CMIP5 models and large ensembles of two atmospheric models indicates that human influence has substantially increased the chance of warm mid-summers such as 2013 in CEC, although the exact estimated increase depends on the selection of climate models.

  16. The Gordon Conference on Inorganic Chemistry Held in Wolfboro, New Hampshire on 30 July-3 August 1990

    DTIC Science & Technology

    1991-06-01

    20@ id ++- Gordon Conferences were supported by AFOSR during i90 h Cneec on Inorganic Chemistry was held in Wolfboro. NH July 30 to August 3. Total...Conference on Organometallic Chemistry was held in Newport, RI. June 24-29. Total attendance was 134. 26 papers and 57 posters were presented. 14L SUICTMa...ON INORGANIC CHEMISTRY 1990 Final Program Report The 1990 Gordon Conference on Inorganic Chemistry was held at Brewster Academy, Wolfboro, New

  17. Assisting Professional Militaries in Latin America. National Security Strategy Development Workshop, La Paz, Bolivia 28 July - 1 August 2003

    DTIC Science & Technology

    2003-10-01

    National Security Strategy Development Workshop, La Paz , Bolivia 28 July – 1 August 2003 The Challenge of Professionalization Professionalization of...2003 to 00-00-2003 4. TITLE AND SUBTITLE Assisting Professional Militaries in Latin America. National Security Strategy Development Workshop, La Paz ...Commander, U.S. Southern Command, and in collaboration with the Bolivian Escuela de Altos Estudios Nacionales (E.A.E.N.), a USAWC-CSL team conducted a

  18. Air Pollution in Moscow Region and Kiev during Heat Wave in July-August 2010

    NASA Astrophysics Data System (ADS)

    Zvyagintsev, A. M.; Tarasova, O. A.; Belikov, I. B.; Blum, O. B.; Elansky, N. F.; Kuznetsova, I. N.; Shumsky, R. A.

    2010-12-01

    The summer of 2010 was extremely hot and dry over the European part of Russia and Ukraine. Some days the air temperature rose up to 40 degrees Celsius. An anomaly of the mesoscale atmospheric processes in the form of a blocking anticyclone in the low atmosphere caused untypical transport of air masses: south-eastern winds became dominating in the Moscow region in summer 2010 instead of north-western transport, which is usually prevailing in summer. Due to long drought and high temperatures (ca. 1 month from July 15) natural fires occurred from time to time over huge territories to the east of Moscow (from Nyzhny Novgorod to Riazan). Forest and peat fires led to unprecedented air pollution and transport of biomass burning products over long distances. The smoke plume repeatedly extended to the Moscow megapolis. Arrival of the polluted air from the burning sources nearest to Moscow was accompanied by a haze with reduced visibility down to 100-200 m, as well as by a strong smell of burning and corresponding abrupt decrease of air quality. Strong photochemical smog of the Los-Angeles type was observed some days in the Moscow megapolis. Air masses polluted with the products of natural fires traveled within the territory of central Russia without crossing its western border. They had no impact on the air quality in Kiev, where air composition was defined by local emissions and meteorological conditions. The short intervals with temperatures above 35 degrees Celsius were accompanied by change of air masses and precipitation events. This paper presents measurement of surface ozone, NOx and CO mixing ratios and PM10 in the Moscow region as well as ozone and NOx level observations in Kiev. Eight-hourly averaged surface ozone mixing ratios in Moscow exceeded 60 ppb during about 30 days. During 20 days a haze was observed in the city from time to time, and the haze was continuous for the period from 3rd to 10th of August. The most intensive smog was observed during 6-8 August

  19. High Efficiency Generation of Hydrogen Fuels using Nuclear Power Annual Report August, 2000 - July 2001

    SciTech Connect

    Brown, L.C.

    2002-11-01

    OAK B188 High Efficiency Generation of Hydrogen Fuels using Nuclear Power Annual Report August 2000 - July 2001. Currently no large scale, cost-effective, environmentally attractive hydrogen production process is available for commercialization nor has such a process been identified. Hydrogen is a promising energy carrier, which potentially could replace the fossil fuels used in the transportation sector of our economy. Carbon dioxide emissions from fossil fuel combustion are thought to be responsible for global warming. The purpose of this work is to determine the potential for efficient, cost-effective, large-scale production of hydrogen utilizing high temperature heat from an advanced nuclear power station. The benefits of this work will include the generation of a low-polluting transportable energy feedstock in an efficient method that has little or no implication for greenhouse gas emissions from a primary energy source whose availability and sources are domestically controlled. This will help to ensure energy for a future transportation/energy infrastructure that is not influenced/controlled by foreign governments. This report describes work accomplished during the second year (Phase 2) of a three year project whose objective is to ''define an economically feasible concept for production of hydrogen, by nuclear means, using an advanced high temperature nuclear reactor as the energy source.'' The emphasis of the first year (Phase 1) was to evaluate thermochemical processes which offer the potential for efficient, cost-effective, large-scale production of hydrogen from water, in which the primary energy input is high temperature heat from an advanced nuclear reactor and to select one (or, at most, three) for further detailed consideration. Phase 1 met its goals and did select one process, the sulfur-iodine process, for investigation in Phases 2 and 3. The combined goals of Phases 2 and 3 were to select the advanced nuclear reactor best suited to driving the

  20. 43 CFR 3741.5 - Mining claims and millsites located on Leasing Act lands after August 13, 1954.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 43 Public Lands: Interior 2 2011-10-01 2011-10-01 false Mining claims and millsites located on... and millsites located on Leasing Act lands after August 13, 1954. Since enactment of the Act on August... minerals to the United States as provided in section 4, mining claims and millsites may be located...

  1. 43 CFR 3741.5 - Mining claims and millsites located on Leasing Act lands after August 13, 1954.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Leasing Act lands after August 13, 1954. 3741.5 Section 3741.5 Public Lands: Interior Regulations Relating... and millsites located on Leasing Act lands after August 13, 1954. Since enactment of the Act on August 13, 1954, and subject to its conditions and provisions, including the reservation of Leasing...

  2. 43 CFR 3741.5 - Mining claims and millsites located on Leasing Act lands after August 13, 1954.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Leasing Act lands after August 13, 1954. 3741.5 Section 3741.5 Public Lands: Interior Regulations Relating... and millsites located on Leasing Act lands after August 13, 1954. Since enactment of the Act on August 13, 1954, and subject to its conditions and provisions, including the reservation of Leasing...

  3. Atmospheric benzene observations from oil and gas production in the Denver-Julesburg Basin in July and August 2014

    NASA Astrophysics Data System (ADS)

    Halliday, Hannah S.; Thompson, Anne M.; Wisthaler, Armin; Blake, Donald R.; Hornbrook, Rebecca S.; Mikoviny, Tomas; Müller, Markus; Eichler, Philipp; Apel, Eric C.; Hills, Alan J.

    2016-09-01

    High time resolution measurements of volatile organic compounds (VOCs) were collected using a proton-transfer-reaction quadrupole mass spectrometry (PTR-QMS) instrument at the Platteville Atmospheric Observatory (PAO) in Colorado to investigate how oil and natural gas (O&NG) development impacts air quality within the Wattenburg Gas Field (WGF) in the Denver-Julesburg Basin. The measurements were carried out in July and August 2014 as part of NASA's "Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality" (DISCOVER-AQ) field campaign. The PTR-QMS data were supported by pressurized whole air canister samples and airborne vertical and horizontal surveys of VOCs. Unexpectedly high benzene mixing ratios were observed at PAO at ground level (mean benzene = 0.53 ppbv, maximum benzene = 29.3 ppbv), primarily at night (mean nighttime benzene = 0.73 ppbv). These high benzene levels were associated with southwesterly winds. The airborne measurements indicate that benzene originated from within the WGF, and typical source signatures detected in the canister samples implicate emissions from O&NG activities rather than urban vehicular emissions as primary benzene source. This conclusion is backed by a regional toluene-to-benzene ratio analysis which associated southerly flow with vehicular emissions from the Denver area. Weak benzene-to-CO correlations confirmed that traffic emissions were not responsible for the observed high benzene levels. Previous measurements at the Boulder Atmospheric Observatory (BAO) and our data obtained at PAO allow us to locate the source of benzene enhancements between the two atmospheric observatories. Fugitive emissions of benzene from O&NG operations in the Platteville area are discussed as the most likely causes of enhanced benzene levels at PAO.

  4. Report of the Council and Accounts for the session 2007 August 1 to 2008 July 31

    NASA Astrophysics Data System (ADS)

    Pickard, R.; Boyd, D.

    2008-10-01

    The Council of the British Astronomical Association presents its annual Report and Accounts for the session ended 2008 July 31. The surplus of income over expenditure for the financial year ended 2008 June 30 was £2,642.

  5. Time-of-travel of solutes in the Trinity River basin, Texas, September 1973 and July-August 1974

    USGS Publications Warehouse

    Ollman, R.H.

    1975-01-01

    The U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers and the Trinity River Authority of Texas, conducted timee-of-travel studies in the Trinity River basin during a period of low flow September 19-23, 1973, and during a period of moderate flow July 23-August 1, 1974.  The purpose of these two studies was to provide data that could be used by the Trinity River Authority as part of the basic input to a mathematical water-quality model of the river. The model is being developed as part of a comprehensive water-quality management plan for the basin.

  6. Informal progress report on neutron-scattering studies in the actinide region, August 1, 1982-July 31, 1983

    SciTech Connect

    Beghian, L.E.; Kegel, G.H.R.

    1983-01-01

    This informational techical progress report summarizes the principal results of the research performed during the period August 1, 1982 to July 31, 1983. The report covers two areas of neutron cross section measurements: (1) the excited states (E/sub x/ > 650 keV) of /sup 232/Th and /sup 238/U; and (2) the ground state rotational band (0/sup +/, 2/sup +/, 4/sup +/ states) of /sup 232/Th and /sup 238/U from 520 to 940-keV bombarding energy.

  7. Conference Overview: 17th Biennial Conference on Chemical Education, Western Washington University, July 28-August 1, 2002

    NASA Astrophysics Data System (ADS)

    Kriz, George S.; Selfe, Sara

    2002-06-01

    This article describes the 17th Biennial Conference on Chemical Education, to be held from July 28 through August 1, 2002, at Western Washington University, Bellingham, Washington. The paper outlines important features of the conference program, including workshops, Plenary Lectures, symposia, and poster sessions. Special program highlights are also identified. Other features of the conference, including exhibits, conference banquet, and travel information are included. Details regarding conference regisration and application for housing and meals are provided. A list of sponsoring organizations and companies may also be found.

  8. Geodetic Monitoring of The Strain Evolution Field During The July - August 2001 Mt. Etna Eruption

    NASA Astrophysics Data System (ADS)

    Puglisi, G.; Etna01-Geo Team

    Since the beginning of the 2001 Etna eruption, EDM and GPS measurements have been carried out to monitor the evolution of the ground deformation pattern of the volcano during the particular period of activity. The ground deformation pattern pre- ceding the eruption was known thanks to previous EDM and GPS surveys carried out and completed just few days before the onset of the eruption. During the period of activity, EDM measurements have been carried out daily on the uppermost part of the southern and northeastern trilateration networks in order to monitor the strain of the areas surrounding the eruptive fractures. These surveys allowed following the evolu- tion of the strain field since the beginning of the seismic swarm preceding the opening of the eruptive fracture system. Most of the ground deformation has been observed during the very first days of the eruption. Starting from the last days of the activity, the three EDM networks located on the NE, SW and S flanks of the volcano have been completely measured to fix the ground deformation pattern caused by the eruption. During the opening of the fracture system, the N-S GPS profile (17 stations), starting from the NE Rift to the Rifugio Sapienza area, has been measured together with a few GPS stations on the upper part of the volcano. The comparison of these measurements with the previous ones carried out the day before the seismic swarm, depicts a strong ground deformation pattern in good agreement with the dynamics of the intrusion. Later, several measurements have been carried out also during the eruption, on part of the N-S profile (12 stations), from the NE rift to the Piano del Lago area, very near the upper part of the eruptive fracture, because some of the southernmost stations were covered by the lava flows during the first days of the eruption. GPS sessions have been also carried out almost daily on an E-W profile, consisting of 16 stations and cross- ing the Rifugio Sapienza and the 1989 fracture

  9. Report of the Council and Accounts for the session 1997 August 1 to 1998 July 31

    NASA Astrophysics Data System (ADS)

    Mobberley, M. P.; Hatfield, H. R.; et al.

    1998-10-01

    The Council of the British Astronomical Association presents its Report for the session ended 1998 July 31 and Accounts for the year ended 1998 June 30. By resolution of a Special General Meeting held on 1998 March 25, the financial year of the Association was changed to end on June 30. The Accounts presented here therefore represent the business for eleven months only.

  10. Report of the Council and Accounts for the session 2001 August 1 to 2002 July 31

    NASA Astrophysics Data System (ADS)

    Hurst, G. M.; Tucker, D.; et al.

    2002-10-01

    The Council of the British Astronomical Association presents its annual Repot and Accounts for the session ended 2002 July 31. The deficit of income over expenditure for the financial year ended 2002 June 30 was £45,103. This amount includes a figure of £25,004 representing losses on revaluation of investment assets.

  11. Rio Salado Community College Adjunct Faculty Staffing and Development Program, July 1989-August 1990.

    ERIC Educational Resources Information Center

    Rio Salado Community Coll., AZ.

    In July 1989, Rio Salado Community College established an Adjunct Faculty Staffing and Development Program (AFSDP) with the following goals: to insure excellence in instruction through content consistency and the use of effective teaching and learning strategies; to increase adjunct faculty identification with the college and appreciation of the…

  12. KINEMATIC DISCOVERY OF A STELLAR STREAM LOCATED IN PISCES

    SciTech Connect

    Martin, Charles; Carlin, Jeffrey L.; Newberg, Heidi Jo; Grillmair, Carl

    2013-03-10

    We report the kinematic discovery of the Pisces Stellar Stream (PSS), at Galactic longitude l Almost-Equal-To 135 Degree-Sign and -39 Degree-Sign < b < -36 Degree-Sign . We originally identified this halo substructure from velocities of red giant branch stars in the Sloan Digital Sky Survey (SDSS) Data Release 8, and confirmed its presence in turnoff stars from SDSS photometric data. The PSS is a narrow, kinematically cold tidal stream, with {sigma}{sub v,0} Almost-Equal-To 8 km s{sup -1}. Its metallicity is [Fe/H] Almost-Equal-To -2.2, with {approx}0.3 dex dispersion. The color-magnitude signature of the stream turnoff, combined with our measured metallicity, places the PSS at a distance of 35 {+-} 3 kpc. The PSS is the same as the previously announced ''Triangulum stream'' and part of the proposed ''stream a''. We rule out an association of the PSS with other previously known Milky Way substructures in the same region of the sky.

  13. Reconnaissance of ground-water quality at selected wells in the Beaver Creek watershed, Shelby, Fayette, Tipton, and Haywood counties, West Tennessee, July to August 1992

    USGS Publications Warehouse

    Fielder, A.M.; Roman-Mas, A. J.; Bennett, M.W.

    1994-01-01

    A reconnaissance of water-quality conditions of the water-table aquifer in the Beaver Creek watershed and other rural areas of Shelby, Fayette, Tipton, and Haywood Counties, Tennessee, was conducted during July and August 1992. The reconnaissance was conducted by the U.S. Geological Survey, in cooperation with the Tennessee Department of Agriculture and the University of Tennessee Agricultural Extension Service. The report presents data of selected water-quality constituents and properties of water samples collected from 398 domestic wells, located primarily in rural areas. Nitrate concentrations exceeded 10 milligrams per liter in water from 73 of the 398 wells. Fecal coliform and fecal streptococci bacteria were detected in water from 21 and 118 wells, respectively.

  14. Long-term fluctuations in water chemistry for streams located in different physiographic provinces of Alabama

    SciTech Connect

    Donahoe, R.J. . Dept. of Geology)

    1993-03-01

    The compositional variation of stream water in nine different watersheds has been the subject of a three year study. Three of the nine streams are underlain by sandstone and are located in the Plateau physiographic province of Alabama, three watersheds have phyllite bedrock and are located in the AL Piedmont, and three streams draining carbonate units are located in the Valley and Ridge structural province of AL. These streams all have very similar climatic conditions, and were selected to provide three replicate data sets for streams closely matched in structural setting and bedrock type and to allow comparison between streams in the three different structural settings and bedrock types. Between 24-36 monthly stream water samples were collected for each watershed over the study period and analyzed for cations, anions, pH, and alkalinity. All streams show seasonal variations in major cation and anion concentrations. In general, major cation concentration minima occurred in Winter 1989-90 and late Spring/early Summer 1991 for all streams. This suggests dilution/evaporation as dominant controls on stream water major element chemistry. Comparison of chemical trends with precipitation records and stream stage data is underway to test this hypothesis. Great variation in stream water anion concentration occurs within the large-scale seasonal trends for all streams. These variations are primarily the result of biologic activity. Differences in major element concentration trends exist between streams within a particular bedrock type. Element speciation and mineral saturation indices were calculated using the computerized chemical equilibrium code WATEQ4F. Plots of mineral saturation indices with season show that all stream waters are essentially saturated with quartz, undersaturated with primary silicate minerals, and supersaturated with most clay minerals and ferric iron oxides. Further, carbonate streams are undersaturated with calcite and dolomite.

  15. El Niño-based malaria epidemic warning for Oromia, Ethiopia, from August 2016 to July 2017.

    PubMed

    Bouma, M J; Siraj, A S; Rodo, X; Pascual, M

    2016-11-01

    Tropical highland malaria intensifies and shifts to higher altitudes during exceptionally warm years. Above-normal temperatures associated with El Niño during boreal winter months (December-March) may intensify malaria in East African highlands. We assessed the malaria risk for Oromia, the largest region of Ethiopia with around 30 million inhabitants. Simple linear regression and spatial analyses were used to associate sea surface temperatures (SST) in the Pacific and surface temperatures in Ethiopia with annual malaria risk in Oromia, based on confirmed cases of malaria between 1982 and 2005. A strong association (R(2) = 0.6, P < 0.001) was identified between malaria and sea surface temperatures in the Pacific, anticipating a 70% increase in malaria risk for the period from August 2016 to July 2017. This forecast was quantitatively supported by elevated land surface temperatures (+1.6 °C) in December 2015. When more station data become available and mean March 2016 temperatures from meteorological stations can be taken into account, a more robust prediction can be issued. An epidemic warning is issued for Oromia, Ethiopia, between August 2016 and July 2017 and may include the pre-July short malaria season. Similar relationships reported for Madagascar point to an epidemic risk for all East African highlands with around 150 million people. Preparedness for this high risk period would include pre-emptive intradomestic spraying with insecticides, adequate stocking of antimalarials, and spatial extension of diagnostic capacity and more frequent reporting to enable a rapid public health response when and where required. © 2016 John Wiley & Sons Ltd.

  16. Visible light nitrogen dioxide spectrophotometer intercomparison: Mount Kobau, British Columbia, July 28 to August 10, 1991

    NASA Technical Reports Server (NTRS)

    Mcelroy, C. T.; Elokhov, A. S.; Elansky, N.; Frank, H.; Johnston, P.; Kerr, J. B.

    1994-01-01

    Under the auspices of the World Meteorological Organization, Environment Canada hosted an international comparison of visible light spectrophotometers at Mt. Kobau, British Columbia in August of 1991. Instruments from four countries were involved. The intercomparison results have indicated that some significant differences exist in the responses of the various instruments, and have provided a basis for the comparison of the historical data sets which currently exist as a result of the independent researches carried out in the past in the former Soviet Union, New Zealand, and Canada.

  17. Air & Space Journal. Volume 28, Number 4. July-August 2014

    DTIC Science & Technology

    2014-08-01

    Navy E-3A 603 AOC 603 AOC Kearsarge Sentinel Kearsarge OCA OCA DCA AAR DCA AARF15E F15EF16CM F16CMA10 A10 B1B B2 E- 3D E-8C ISR DCA OCA E-3F DCA OCA E-2...E-3A E-3B E- 3D E-3F SIPRNET SATCOM LOS Voice ? ? ? Figure. The left chart represents the initial fragmented C2 effort. The one on the right reflects...3B = US AWACS SATCOM = satellite communications E- 3D = British AWACS SIPRNET = Secret Internet Protocol Router Network E-3F = French AWACS July–August

  18. Developing an incident management system to support Ebola response -- Liberia, July-August 2014.

    PubMed

    Pillai, Satish K; Nyenswah, Tolbert; Rouse, Edward; Arwady, M Allison; Forrester, Joseph D; Hunter, Jennifer C; Matanock, Almea; Ayscue, Patrick; Monroe, Benjamin; Schafer, Ilana J; Poblano, Luis; Neatherlin, John; Montgomery, Joel M; De Cock, Kevin M

    2014-10-17

    The ongoing Ebola virus disease (Ebola) outbreak in West Africa is the largest and most sustained Ebola epidemic recorded, with 6,574 cases. Among the five affected countries of West Africa (Liberia, Sierra Leone, Guinea, Nigeria, and Senegal), Liberia has had the highest number cases (3,458). This epidemic has severely strained the public health and health care infrastructure of Liberia, has resulted in restrictions in civil liberties, and has disrupted international travel. As part of the initial response, the Liberian Ministry of Health and Social Welfare (MOHSW) developed a national task force and technical expert committee to oversee the management of the Ebola-related activities. During the third week of July 2014, CDC deployed a team of epidemiologists, data management specialists, emergency management specialists, and health communicators to assist MOHSW in its response to the growing Ebola epidemic. One aspect of CDC's response was to work with MOHSW in instituting incident management system (IMS) principles to enhance the organization of the response. This report describes MOHSW's Ebola response structure as of mid-July, the plans made during the initial assessment of the response structure, the implementation of interventions aimed at improving the system, and plans for further development of the response structure for the Ebola epidemic in Liberia.

  19. Grand Challenges of Advanced Computing for Energy Innovation Report from the Workshop Held July 31-August 2, 2012

    SciTech Connect

    Larzelere, Alex R.; Ashby, Steven F.; Christensen, Dana C.; Crawford, Dona L.; Khaleel, Mohammad A.; John, Grosh; Stults, B. Ray; Lee, Steven L.; Hammond, Steven W.; Grover, Benjamin T.; Neely, Rob; Dudney, Lee Ann; Goldstein, Noah C.; Wells, Jack; Peltz, Jim

    2013-03-06

    On July 31-August 2 of 2012, the U.S. Department of Energy (DOE) held a workshop entitled Grand Challenges of Advanced Computing for Energy Innovation. This workshop built on three earlier workshops that clearly identified the potential for the Department and its national laboratories to enable energy innovation. The specific goal of the workshop was to identify the key challenges that the nation must overcome to apply the full benefit of taxpayer-funded advanced computing technologies to U.S. energy innovation in the ways that the country produces, moves, stores, and uses energy. Perhaps more importantly, the workshop also developed a set of recommendations to help the Department overcome those challenges. These recommendations provide an action plan for what the Department can do in the coming years to improve the nation’s energy future.

  20. Reliability of the Solar One plant during the power production phase: August 1, 1984--July 31, 1987

    SciTech Connect

    Kolb, G.J.; Lopez, C.W.

    1988-10-01

    The power production phase at Solar One spanned three years from August 1, 1984 through July 31, 1987. In that period the plant achieved an average availability, during hours of sunshine, of 81.7%. This report presents the frequencies and causes of the plant outages that occurred. The eleven most important causes composed 75% of the total outage time. Qualitative insights related to the origin and mitigation of these causes are provided. Also presented are insights and statistics regarding the reliability of the heliostat field. The quantitative and qualitative information presented in this report will be useful to studies aimed at improving the reliability of future solar central receiver power plants. 20 refs., 11 figs., 3 tabs.

  1. Summary of water- and sediment-quality data for Anacostia River well sites sampled in July-August 2002

    USGS Publications Warehouse

    Miller, Cherie V.; Klohe, Cheryl A.

    2003-01-01

    This data report is a summary of chemical analyses conducted by the U.S. Geological Survey on ground water and sediment in the tidal Anacostia River watershed, Washington, D.C. during July-August 2002. Cores were drilled and wells were established at three shoreline sites: two wells at the New York Avenue overpass, two wells at the Kenilworth Aquatic Gardens, and one well at Anacostia Park. Additionally, two cores were collected by hoverprobe in mudflats on the river: one by Benning Road and one in the mouth of Beaverdam Creek. Chemical analyses included volatile organic compounds, semi-volatile organic compounds or polyaromatic hydrocarbons, organochlorine pesticides, aroclors and total polychlorinated biphenyls, metals, nutrients, biochemical and chemical oxygen demands, total phenols, total cyanide, oil and grease, and total suspended and dissolved solids in aqueous phases.

  2. Low enrichment fuel conversion for Iowa State University. Progress report, August 1, 1991--July 31, 1992

    SciTech Connect

    Rohach, A.F.

    1992-08-01

    This report discusses the UTR-10 reactor at Iowa State University which went critical on low enriched uranium (LEU) fuel on August 14, 1991. However, subsequent to the criticality experiments the fuel plates started to discolor. In addition, roll pins used to lift the fuel assemblies were discovered to be cracked. It was determined that these problems were due to chemical agents in the primary coolant water. The roll pins were replaced by solid stainless steel pins. The primary coolant was replaced and the reactor is currently in operation. Surveillance specimens will be used to monitor any possible future discoloration. The high enriched fuel (HEU) is being prepared for eventual shipment to a high enriched fuel receiving facility.

  3. ZPPR progress report for July, August and September as of September 30, 1986

    SciTech Connect

    Brumbach, S. B.; Collins, P. J.

    1986-09-30

    The ZPPR-15 metal fuel physics benchmark experiments in support of the IFR program have been completed. The program began with the 15A assembly which had fuel with plutonium and depleted uranium, sodium coolant and structural steel. Results from the ZPPR-15A experiments were reported in ZPR-TM-469. Zirconium was added to the inner core in place of stainless steel to form assembly 15B. Assembly 15C represented a midcycle fuel composition with about 50% of the core drawers having uranium fuel and 50% having plutonium fuel. The final assembly, 15D, represented a near-startup composition with 90% uranium fuel and 10% plutonium fuel. Experiments in ZPPR-15D were completed in July. The final experiments measured the Doppler coefficient in various samples and used the helium accumulation fluence monitor technique to measure the {sup 10}B(n,He) production rate in natural B{sub 4}C pins in a mockup control rod.

  4. The Nimbus 6 data catalog. Volume 7: 1 July - 31 August 1976. Data orbits 5156 - 5985

    NASA Technical Reports Server (NTRS)

    1977-01-01

    Operations of various experiments during the reporting period are summarized. Orbital elements, data availability times, anomalies in the data, geographic location, and time of data are tabulated. Montages obtained by infrared and microwave radiometers are included.

  5. Investigation of the Geokinetics Horizontal In Situ Oil Shale Retorting Process. Quarterly report, July, August, September 1981

    SciTech Connect

    Gilbert, J.R.

    1981-11-01

    Progress is reported on developing an in-situ process for recovering shale oil. On July 23, Retort No. 24 was shut-in. Production for the life of Retort No. 24 totaled 12,741 barrels of crude shale oil. A contract was made with the United States Defense Fuel Supply Center to furnish them with 5000 barrels of crude shale oil. Shipments were made by tanker trucks to the Anvil Points Oil Shale Research Facility near Rifle, Colorado to fulfill this contractual agreement. A shipment of 120 barrels of crude shale oil was made to Mobil Research Company. Retort No. 26 was loaded with explosives on August 5 and 6. This operation was carried out totally by Geokinetics' personnel. On August 7, Retort No. 26 was detonated. Again all blasting operations were carried out by Geokinetics personnel. According to initial indications the Retort No. 26 blast was highly successful. Following the blast of Retort No. 26 all efforts were turned to the ignition of Retort No. 25. Equipment and piping were set in place and the instrumentation systems were wired in. Ignition for Retort No. 25 is scheduled for mid to late October. The Retort No. 26 Post-blast Coring Program continued through the end of this quarter. With the ignition of Retort No. 25 the analytical lab began constant monitoring of the retort burn.

  6. Attending to Multiple Visual Streams: Interactions between Location-Based and Category-Based Attentional Selection

    ERIC Educational Resources Information Center

    Fagioli, Sabrina; Macaluso, Emiliano

    2009-01-01

    Behavioral studies indicate that subjects are able to divide attention between multiple streams of information at different locations. However, it is still unclear to what extent the observed costs reflect processes specifically associated with spatial attention, versus more general interference due the concurrent monitoring of multiple streams of…

  7. Testing a community water supply well located near a stream for susceptibility to stream contamination and low-flows.

    NASA Astrophysics Data System (ADS)

    Stewart-Maddox, N. S.; Tysor, E. H.; Swanson, J.; Degon, A.; Howard, J.; Tsinnajinnie, L.; Frisbee, M. D.; Wilson, J. L.; Newman, B. D.

    2014-12-01

    A community well is the primary water supply to the town of El Rito. This small rural town in is located in a semi-arid, mountainous portion of northern New Mexico where water is scarce. The well is 72 meters from a nearby intermittent stream. Initial tritium sampling suggests a groundwater connection between the stream and well. The community is concerned with the sustainability and future quality of the well water. If this well is as tightly connected to the stream as the tritium data suggests, then the well is potentially at risk due to upstream contamination and the impacts of extended drought. To examine this, we observed the well over a two-week period performing pump and recovery tests, electrical resistivity surveys, and physical observations of the nearby stream. We also collected general chemistry, stable isotope and radon samples from the well and stream. Despite the large well diameter, our pump test data exhibited behavior similar to a Theis curve, but the rate of drawdown decreased below the Theis curve late in the test. This decrease suggests that the aquifer is being recharged, possibly through delayed yield, upwelling of groundwater, or from the stream. The delayed yield hypothesis is supported by our electrical resistivity surveys, which shows very little change in the saturated zone over the course of the pump test, and by low values of pump-test estimated aquifer storativity. Observations of the nearby stream showed no change in stream-water level throughout the pump test. Together this data suggests that the interaction between the stream and the well is low, but recharge could be occurring through other mechanisms such as delayed yield. Additional pump tests of longer duration are required to determine the exact nature of the aquifer and its communication with the well.

  8. Decontamination systems information and research programs. Quarterly report, July 1--August 31, 1996

    SciTech Connect

    1997-07-01

    The US contains numerous hazardous waste sites. Many sites are on private land near operating units of various companies. An effort is being made to determine the conditions under which such sites can be remediated voluntarily. The objective of the project will be to first assess the interest and willingness of industry in the Kanawha River Valley, WV to participate in discussions that would lead toward voluntary cleanup activities. The second will be to implement the activities agreed upon by the interested parties. The project will first involve individual discussions with the industrial, government, and other organized groups in the area. These discussions will help determine the feasibility of organizing voluntary efforts. If the discussions indicate that conditions may be favorable for developing individual or group voluntary cleanup projects, a working group will be convened to establish the environmental goals of the project as well as the technical approach for achieving those goals. The projects for the 1996 WVU Cooperative Agreement are categorized into three task focus areas: Task 1.0 Contaminant Plume Containment and Remediation, Task 2.0 Cross Cutting Innovative Technologies, and Task 3.0 Small Business Support Program. Summaries of the accomplishments for the subtasks reporting under these categories during the third quarter, 1 July 96 through 30 September 96, are presented.

  9. Medical Surveillance Monthly Report (MSMR). Volume 11, Number 4, July/August 2005

    DTIC Science & Technology

    2005-08-01

    diagnosis, and treatment of imported malaria. Arch Intern Med. 2000 Sep 11;160(16):2505-10. 2. Baird JK, Hoffman SL. Primaquine therapy for malaria...System. Reporting location Food-borne Vaccine PreventableNumber of reports all events3 Giardia Hepatitis B Varicella 2 Events reported by September 7

  10. Defense AT&L. Volume 37, Number 4, July-August 2008

    DTIC Science & Technology

    2008-08-01

    Collins, Robert Ernst , Martin Smith If talented people are located on the opposite side of the globe, that doesn’t mean they can’t participate...the 21st Century Jerome H. Collins • Robert Ernst • Martin Smith see looking back is a knowledge worker. What do we mean by that? Well, in the past...we—the Department of Defense’s acquisition, tech- Collins is a professor of acquisition management with the Defense Acquisition University. Ernst is

  11. The Coast Artillery Journal. Volume 80, Number 4, July-August 1937

    DTIC Science & Technology

    1937-08-01

    with low bodies, one each for searchlight, power plant, and sound locator. Nfethod No. 5, Three short-coupled commercial trucks with semitrailers , each...Wheels. Universal Joints, Drive Shafts, and Differentials. ga Valves and Valve Operating Mechanisms. Rear Axles , Frames, Springs, and Shock Absorbers...na Valve Timing. Brakes. n .. Crankcase Lubrication. Front Axles and Steering... !1 Engine Cooling Systems .. Tires, Rims and \\Vheels. :: ~ Fl’ 0 h

  12. Summer 2000 Student/Faculty Science Campaign, July 31-August 8, 2000

    DTIC Science & Technology

    2000-10-01

    opportunities for upper atmospheric and space physics research involving the HAARP high frequency transmitter and associated diagnostic...instrumentation located near Gakona, Alaska . This report documents the technical program and participants and includes a compilation of the Student I Faculty...experiment summaries in areas ionospheric generation of ULF/ELF/VLF radiowaves, D-Region diagnostics, SuperDARN observations of HAARP induced ionospheric

  13. The Coast Artillery Journal. Volume 75, Number 4, July-August 1932

    DTIC Science & Technology

    1932-08-01

    inflicting losses that in the aggregate were serious. "Apr.ons" of captive balloons were located at var. ious points near London on the theory that the...concurred in that theory or doctrine, and I think that developments since the war have substan- tiated my views on the matter. • • • I believe that nothing...orizing and repeating the regulations is not sufficient. Practice must accompany the theory , practice .on the drill floor under the competent

  14. Decreasing trend of tropical cyclone genesis frequency in July-August over the western North Pacific in the last 20 years

    NASA Astrophysics Data System (ADS)

    Choi, Ki-Seon; Kim, Hae-Dong; Kang, Sung-Dae; Shim, Chang-Sup

    2016-07-01

    This study analyzed the frequency of tropical cyclones (TCs) that occurred in each month of July to September, which is when most TCs occur during a year, in the western North Pacific for the last 20 years. Since the mid-1990s, the TC genesis frequency has tended to decrease during July to August but to increase during September. Therefore, the time series of the TC genesis frequency during July to August was analyzed. The average TC genesis frequency during July to August was 10TCs. Until 2006, a greater number of years had a TC genesis frequency more than 10TCs; however, from 2006, a greater number of years had a TC genesis frequency less than 10TCs. To determine why the TC genesis frequency showed this change in the mid-2000s, the difference between the average of July and August 2007 to 2014 (0714) and that of July and August 1995 to 2006 (9506) was analyzed. With regard to the TC genesis frequency, TCs occurred largely in the eastern sea of the Philippines during 0714 and in the distant eastern sea of the Philippines during 9506. With regard to the TC passage frequency, TCs came ashore at the southeastern area of China via the South China Sea from the Philippines during 0714 and tended to go north toward Korea and Japan through the East China Sea from the distant eastern sea of the Philippines during 9506. The cause of the differences in TC tracks between the two periods was verified through an analysis of the 850- and 500-hPa streamlines. During 0714, anomalous anticyclonic circulations were strengthened in most areas of the western North Pacific. Therefore, the TC genesis frequency during 0714 was lower than that during 9506 in the tropical and subtropical western North Pacific; in particular, in this area, anomalous easterlies were strengthened, which caused TCs to go toward the southeastern area of China.

  15. Medical Surveillance Monthly Report (MSMR). Volume 4, Number 5, July/August 1998

    DTIC Science & Technology

    1998-08-01

    Valley Fever 0 0 0 Guillain - Barre Syndrome 1 2 3 RMSF 0 3 3 H. influenzae, inv. 1 0 1 Rubella 0 0 0 Heat exhaustion 3 38 41 Salmonellosis 35 55...approximately four short field exercises (e.g., weapons firing), including one at Warrior Base (located north of the Imjin River within a few kilometers of...week exercise at the Jungle Operations Training Center (JOTC) at Fort Sherman, Panama. While in the field, he slept on the ground, generally on a

  16. Ground surface deformation patterns, magma supply, and magma storage at Okmok volcano, Alaska, from InSAR analysis: 2. Coeruptive deflation, July-August 2008

    USGS Publications Warehouse

    Lu, Zhong; Dzurisin, Daniel

    2010-01-01

    A hydrovolcanic eruption near Cone D on the floor of Okmok caldera, Alaska, began on 12 July 2008 and continued until late August 2008. The eruption was preceded by inflation of a magma reservoir located beneath the center of the caldera and ∼3 km below sea level (bsl), which began immediately after Okmok's previous eruption in 1997. In this paper we use data from several radar satellites and advanced interferometric synthetic aperture radar (InSAR) techniques to produce a suite of 2008 coeruption deformation maps. Most of the surface deformation that occurred during the eruption is explained by deflation of a Mogi-type source located beneath the center of the caldera and 2–3 km bsl, i.e., essentially the same source that inflated prior to the eruption. During the eruption the reservoir deflated at a rate that decreased exponentially with time with a 1/e time constant of ∼13 days. We envision a sponge-like network of interconnected fractures and melt bodies that in aggregate constitute a complex magma storage zone beneath Okmok caldera. The rate at which the reservoir deflates during an eruption may be controlled by the diminishing pressure difference between the reservoir and surface. A similar mechanism might explain the tendency for reservoir inflation to slow as an eruption approaches until the pressure difference between a deep magma production zone and the reservoir is great enough to drive an intrusion or eruption along the caldera ring-fracture system.

  17. Intermediate photovoltaic system application experiment operational performance report. Volume 4. For G. N. Wilcox Memorial Hospital, Kauai, Hawaii for June, July, and August 1982

    SciTech Connect

    Not Available

    1982-12-01

    Presented are the data accumulated during June, July, and August 1982 at the intermediate photovoltaic project at G.N. Wilcox Memorial Hospital, Kauai, Hawaii. Generated energy and environmental (weather) data are presented graphically. Explanations of irregularities not attributable to weater are provided.

  18. Agreement between Wayne State University and the Wayne State University Chapter of the American Association of University Professors, August 1, 1983-July 31, 1986.

    ERIC Educational Resources Information Center

    American Association of Univ. Professors, Washington, DC.

    The collective bargaining agreement between Wayne State University and the Wayne State University Chapter of AAUP covering the period August 1, 1983-July 31, 1986 is presented. Items covered in the agreement include: personnel classification, administration rights, union rights, union privileges, deduction of union dues and fees,…

  19. Hangman Restoration Project : Annual Report, August 1, 2001 - July 31, 2002.

    SciTech Connect

    Green, Gerald I.; Coeur D'Alene Tribe.

    2002-06-01

    The construction of hydroelectric facilities in the Columbia Basin resulted in the extirpation of anadromous fish stocks in Hangman Creek and its tributaries within the Coeur d'Alene Reservation. Thus, the Coeur d'Alene Indian Tribe was forced to rely more heavily on native fish stocks such as redband trout (Oncorhynchus mykiss garideini), westslope cutthroat trout (O. clarki lewisii) and bull trout (Salvelinus confluentus) as well as local wildlife populations. Additionally, the Tribe was forced to convert prime riparian habitat into agricultural lands to supply sustenance for their changed needs. Wildlife habitats within the portion of the Hangman Creek Watershed that lies within the Coeur d'Alene Indian Reservation have been degraded from a century of land management practices that include widespread conversion of native habitats to agricultural production and intensive silvicultural practices. Currently, wildlife and fish populations have been marginalized and water quality is significantly impaired. In the fall of 2000 the Coeur d'Alene Tribe Wildlife Program, in coordination with the Tribal Fisheries Program, submitted a proposal to begin addressing the degradations to functioning habitats within the Coeur d'Alene Reservation in the Hangman Watershed. That proposal led to the implementation of this project during BPA's FY2001 through FY2003 funding cycle. The project is intended to protect, restore and/or enhance priority riparian, wetland and upland areas within the headwaters of Hangman Creek and its tributaries in order to promote healthy self-sustaining fish and wildlife populations. A key goal of this project is the implementation of wildlife habitat protection efforts in a manner that also secures areas with the potential to provide stream and wetland habitats essential to native salmonid populations. This goal is critical in our efforts to address both resident fish and wildlife habitat needs in the Hangman Watershed. All proposed implementation

  20. Methods to estimate historical daily streamflow for ungaged stream locations in Minnesota

    USGS Publications Warehouse

    Lorenz, David L.; Ziegeweid, Jeffrey R.

    2016-03-14

    Effective and responsible management of water resources relies on a thorough understanding of the quantity and quality of available water; however, streamgages cannot be installed at every location where streamflow information is needed. Therefore, methods for estimating streamflow at ungaged stream locations need to be developed. This report presents a statewide study to develop methods to estimate the structure of historical daily streamflow at ungaged stream locations in Minnesota. Historical daily mean streamflow at ungaged locations in Minnesota can be estimated by transferring streamflow data at streamgages to the ungaged location using the QPPQ method. The QPPQ method uses flow-duration curves at an index streamgage, relying on the assumption that exceedance probabilities are equivalent between the index streamgage and the ungaged location, and estimates the flow at the ungaged location using the estimated flow-duration curve. Flow-duration curves at ungaged locations can be estimated using recently developed regression equations that have been incorporated into StreamStats (http://streamstats.usgs.gov/), which is a U.S. Geological Survey Web-based interactive mapping tool that can be used to obtain streamflow statistics, drainage-basin characteristics, and other information for user-selected locations on streams.

  1. Effect of Drought on Streamflow and Stream-Water Quality in Colorado, July through September 2002

    USGS Publications Warehouse

    Chafin, Daniel T.; Druliner, A. Douglas

    2007-01-01

    During 2002, Colorado experienced the State's worst drought since 1977. In 2003, the U.S. Geological Survey entered into cooperative agreement with the Colorado Department of Public Health and Environment to evaluate the general effects of drought on the water quality of streams in Colorado during summer 2002 by analyzing a water-quality data set obtained during summer 2002 in cooperation with a variety of State and local governments. Water samples were collected at 148 stream sites in Colorado and were measured or analyzed for field properties, major ions, nutrients, organic carbon, bacteria, and dissolved and total recoverable metals. Mean annual streamflow was analyzed at 134 sites in Colorado, and mean summer (July-September) streamflow for 2002 was determined for 146 sites for water years 1978-2002. Mean annual streamflow for 2002 had an average percentile of 29.4 and mean summer streamflow for 2002 had an average percentile of 7.6 relative to 1978-2002. These results indicate that streamflow in Colorado was substantially less than median streamflow for the period and that the effect of drought on streamflow was greater during summer 2002 than during water year 2002 (October 1, 2001, through September 30, 2002). Few measured constituent concentrations or values were elevated or depressed on a widespread basis during summer 2002. Specific conductance was elevated (in the upper quartile relative to historical data) in five of the seven basins that had sufficient data for characterization, indicating that specific conductance likely was affected by drought in those basins. Chloride concentrations were elevated in three of five basins with sufficient data and indicate that chloride concentration generally was affected by drought in those basins. Sulfate concentration was elevated in four of six basins with sufficient data. The widespread elevation of specific conductance and concentrations of chloride and sulfate indicates that salinity generally was affected by

  2. Atlanta Centennial Olympic Games and Paralympic Games event study, 1996. Final report, July 1996--August 1996

    SciTech Connect

    Amodei, R.; Bard, E.; Brong, B.; Cahoon, F.; Jasper, K.

    1998-11-01

    The Atlanta metropolitan region was the location of one of the most ambitious Intelligent Transportation Systems (ITS) deployments in the United States. This deployment included several individual projects--a Central Transportation Management Center (TMC), six Traffic Control Centers (TCCs), one Transit Information Center (TIC), The Travel Information Showcase (TIS), and the extension of the Metropolitan Atlanta Rapid Transit Authority (MARTA) Rail network and the new high-occupancy vehicle (HOV) lanes on I-85 and I-75. The 1996 Atlanta Centennial Olympic Games and Paralympic Games created a focus for these projects. All of these systems were to be brought on-line in time for the Olympic Games. This report presents the findings of the 1996 Olympic and Paralympic Games Events Study--a compilation of findings of system performance, the benefits realized, and the lessons learned during their operations over the event period. The study assessed the performance of the various Travel Demand Management (TDM) plans employed for Olympic Games traffic management.

  3. Ethanol production for automotive fuel usage. Final technical report, July 1979-August 1980

    SciTech Connect

    Stenzel, R.A.; Yu, J.; Lindemuth, T.E.; Soo-Hoo, R.; May, S.C.; Yim, Y.J.; Houle, E.H.

    1980-08-01

    Production of ethanol from potatoes, sugar beets, and wheat using geothermal resources in the Raft River area of Idaho was evaluated. The south-central region of Idaho produces approximately 18 million bushels of wheat, 1.3 million tons of sugar beets, and 27 million cwt potatoes annually. A 20-million-gallon-per-year ethanol facility has been selected as the largest scale plant that can be supported with the current agricultural resources. The conceptual plant was designed to operate on each of these three feedstocks for a portion of the year, but could operate year-round on any of them. The processing facility uses conventional alcohol technology and uses geothermal energy for all process heating. There are three feedstock preparation sections, although the liquefaction and saccharification steps for potatoes and wheat involve common equipment. The fermentation, distillation, and by-product handling sections are common to all three feedstocks. Maximum geothermal fluid requirements are approximately 6000 gpm. It is anticipated that this flow will be supplied by nine production wells located on private and BLM lands in the Raft River KGRA. The geothermal fluid will be flashed from 280/sup 0/F in three stages to supply process steam at 250/sup 0/F, 225/sup 0/F, and 205/sup 0/F for various process needs. Steam condensate plus liquid remaining after the third flash will be returned to receiving strata through six injection wells.

  4. Theoretical studies of breakdown in random media. Progress report, August 1, 1990--31 July 1993

    SciTech Connect

    Duxbury, P.M.

    1993-08-01

    Failure initiates in local regions of a material microstructure which are either especially weak, or which carry an especially large field. The size and location of these weak or ``hotspots`` depends on the microstructure, and is especially sensitive to microstructural disorder. Using model random microstructures, we have developed analytic and numerical tools to predict where failure initiates, its initiation field, and how it propagates from the initiation sites. We have found it useful to divide the failure process into a nucleation stage, in which damage occurs quite randomly throughout the material, a localisation stage, where a critical crack nucleates, and a catastrophic failure stage during which an unstable crack propagates through the material. Results are being compared with experiments on: Highly porous materials (porous glass, and porous gold); dielectric breakdown of metal loaded insulators (e.g. aluminum in poly-ethyelene) and; the critical current of superconductors containing cracks (Nb and Nb{sub 3}Ge). This report summarises our efforts in these areas.

  5. The Second Chernogolovka Workshop on Low Temperature Physics in Microgravity Environment (CWS-99), July 28-August 2, 1999

    NASA Astrophysics Data System (ADS)

    Mezhov-Deglin, L. P.

    2000-03-01

    The International Seminar CWS-99, devoted to a discussion of the current status and prospects for development of fundamental research in the field of low-temperature physics in a microgravity environment, was held in at the Research Center of the Russian Academy of Sciences (RCC RAN) in Chernogolovka, Moscow District on July 28-August 2, 1999. This seminar was organized by the Institute of Solid State Physics and the Space Materials Science section of the Space Council of the Russian Academy of Sciences with the financial support of the Russian Fund for Fundamental Research, the Ministry of Science and Technology of the Russian Federation, The Russian Aviation & Space Agency, and the Council on Low Temperature Physics of the Russian Academy of Sciences. The CWS-99 Seminar preceded the International Conference on Low Temperature Physics LT-22, and, as one of the satellite activities of LT-22 conducted in the framework of international scientific cooperation, it received substantial support from the Organizing Committee of LT-22 and from the OLMSA Division of the National Aeronoutics and Space Administration (NASA), USA.

  6. Larval and early juvenile fish distribution and assemblage structure in the Canadian Beaufort Sea during July-August, 2005

    NASA Astrophysics Data System (ADS)

    Paulic, Joclyn E.; Papst, Michael H.

    2013-11-01

    The distribution and composition of marine larval and early juvenile fish were investigated during a multidisciplinary project conducted in the nearshore Canadian Beaufort Sea in July and August, 2005. Larvae were sampled using replicate bongo net (500 μm) tows within 50 m water depth. A total of 458 larval fish representing seven families were captured.Multivariate statistical analyses revealed two distinct larval assemblages that were closely correlated to water mass category. The two larval fish assemblages were defined as coastal and estuarine. The coastal assemblage was dominated by Pacific Herring (Clupea pallasii) and was found in the shallow intense plume water mass. This area is greatly influenced by the Mackenzie River outflow. The estuarine assemblage was dominated by Arctic Cod (Boreogadus saida) and was typically found within the diffuse plume and oceanic water masses. Other larval fish families that were represented in the estuarine assemblage were Cottidae, Stichaeidae, Liparidae and Agonidae. Species richness and abundance was greater along the Toker transect in Kugmallit Bay than the Paktoa transect northwest of Garry Island in the Mackenzie Bay.

  7. Studies of the effect of toxic coal particles on model membrane systems. Progress report, July 1, 1980-August 31, 1981

    SciTech Connect

    Kurland, R.J.

    1985-04-01

    This progress report covers work done during the period July 1, 1980 to August 31, 1981, to study the effect of polynuclear aromatic hydrocarbons (PAH) on artificial membrane systems chosen to model lung surfactant. Such PAH compounds adsorbed on flyash particles from coal combustion are of interest since they or their metabolic byproducts could be potential carcinogens. Since the composition of organic material adsorbed on flyash from fluidized bed combustion (FBC) of coal was and still is not well characterized, we chose as a model compound 2,3-dihydroxynaphthalene (2,3DHN) to represent to some extent the following relevant properties of those PAH compounds that might be particularly effective in interacting with and penetrating lung surfactant: solubility in water; solubility in hydrocarbon liquids; and its amphipathic character. This study was to determine whether PAH compounds (1) are miscible with surfactant; (2) modify the membrane structure when miscible; (3) can be transported (and at what rate) across a membrane. The detailed exposition of the results is classified by the particular instrumental technique used to achieve these objectives: surface film pressure versus area measurements; visible, UV and fluorescence spectroscopy; proton and phosphorus-31 nuclear magnetic resonance (NMR) spectroscopy. Efforts concentrated on the first of these techniques. 9 figs.

  8. NASA SIMPL and AVIRIS-NG Coordinated Campaign in Support of ICESat-2; July-August, 2015, Thule, Greenland

    NASA Astrophysics Data System (ADS)

    Brunt, K. M.; Neumann, T.; Harding, D. J.; Green, R. O.; Markus, T.

    2015-12-01

    Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) is a NASA mission scheduled to launch in 2017 and will carry the Advanced Topographic Laser Altimeter System (ATLAS), which is a photon-counting laser altimeter and represents a new approach to space-borne determination of surface elevation. In support of ICESat-2, NASA has deployed a series of airborne campaigns required for pre-launch satellite algorithm development. The Slope Imaging Multi-polarization Photon-Counting Lidar (SIMPL) and Airborne Visible-Infrared Imaging Spectrometer - Next Generation (AVIRIS-NG) were deployed to Thule, Greenland (July-August, 2015) with 2 science goals: 1) to assess how the lidar surface return, for both sea ice and the ice sheet, is effected in melting conditions; and 2) to investigate how variations in snow grain size effect the lidar surface return over the ice sheet. Each instrument was flown on a separate King Air B-200 in a coordinated airborne mission. This presentation will provide an overview for the campaign and the resultant data products.

  9. Organizational Support for the 3rd Summer Institute on Complex Plasmas, July 30 – August 8, 2012

    SciTech Connect

    Lopez, Jose L.

    2012-07-01

    This grant provided partial funds for American graduate students to attend the 3rd Graduate Summer Institute on Complex Plasmas, which was held from July 30 to August 8, 2012 at Seton Hall University in South Orange, New Jersey. The Graduate Summer Institute is a topical series of instructional workshops held bi-annually on the emerging field of complex plasmas that is jointly organized through a collaboration between American and German-European Union plasmas researchers. This specialized program brings together many of the world's leading researchers in the specialized area of complex plasmas, who freely provide instructional lectures and tutorials on the most recent research and discoveries done in this branch of plasma science. The partial funds provided by this grant helped support the travel and accommodation expenses of the participating American students and tutorial instructors. Partial funds further supported the travel and accommodation of three renown American plasma researchers that provided educational tutorials to the thirty-eight participating students from the United States, Europe, and Asia. The organized program afforded a unique opportunity for the participating American graduate students to learn about and engage more deeply in an area of plasma science that is not studied in any of the graduate educational curriculums provided by universities in the United States of America. The educational experience offered by this program provided the necessary knowledge needed by future American plasma researchers to keep the national plasma research effort on the cutting-edge and keep the national plasma community as a global leader.

  10. Loglines. July - August 2012

    DTIC Science & Technology

    2012-08-01

    Managing Editor Kathleen T. Rhem Editor Jacob Boyer Writer Beth Reece Writer Sara Moore Layout/Design Paul Henry Crank Design Assistant Joy Brunk Loglines...the rapid fielding and sustainment of MRAPs, explained Jami Treat, a member of the DLA MRAP Team. Since standard processing was not an option, Treat...improvements were so significant that, as an offshoot to a larger visit to DLA Distribution headquarters April 27, Army Lt. Gen. Kathleen Gainey

  11. Loglines. July - August 2010

    DTIC Science & Technology

    2010-08-01

    Afghanistan: the agency is adapting its operations to make sure additional forces are supplied with food . The cloth- ing and textiles team is working...2 Philadelphia-based construction, equipment team Afghanistan. Food Chain 8 Subsistence network keeps Soldiers, Sailors, Airmen and...increasing number of construction projects in country. Ai r F or ce T ec h. S gt . E fre n Lo pe z 8 www.dla.mil Food Chain Story by Sara Moore N

  12. An overview of the Evaluation of Oxygen Interactions with Materials III Experiment: Space Shuttle Mission 46; July--August, 1992

    SciTech Connect

    Koontz, S.L.; Leger, L.J.; Visentine, J.T.; Hunton, D.E.; Cross, J.B.; Hakes, C.L.

    1993-12-31

    The flight experiment was developed to obtain benchmark atomic oxygen reactivity data and was conducted during Space Transportation System Mission 46 (STS 46), July 31 to August 7, 1992. In this paper, we present an overview of EOIM-III and the results of the materials reactivity and mass spectrometer/carousel experiments. Mass spectrometer calibration methods are discussed briefly, as a prelude to a detailed discussion of the mass spectrometric results produced during STS-46. Mass spectrometric measurements of ambient O-atom flux and fluence are in good agreement with the values calculated using the MSIS-86 model of the thermosphere as well as estimates based on the extent of O-atom reaction with Kapton polyimide. Mass spectrometric measurements of gaseous products formed by O-atom reaction with C{sup 13} labeled Kapton revealed CO, CO{sub 2}, H{sub 2}O, NO and NO{sub 2}. By operating the mass spectrometer so as to detect naturally occurring ionospheric species, we characterized the ambient ionosphere and detected the gaseous reaction products formed when ambient ions interacted with the C{sup 13} Kapton carousel sector. By direct comparison of the results of on-orbit O-atom exposures with those conducted in ground-based laboratory systems, we have demonstrated the strong translational energy dependence of O-atom reactions with a variety of polymers. A ``line-of-centers`` reactive scattering model was shown to provide a reasonably accurate description of the translational energy dependence of polymer reactions with O atoms over a three order-of-magnitude range in translational energy and a four order-of-magnitude range in reaction efficiency. Postflight studies of the polymer samples by x-ray photoelectron spectroscopy and infrared spectroscopy demonstrate that O-atom attack is confined to within 50 to 100 Angstroms of the surface.

  13. Combustion of dense streams of coal particles. Final report, August 29, 1990--February 28, 1994

    SciTech Connect

    Annamalai, K.; Gopalakrishnan, C.; Du, X.

    1994-05-01

    The USA consumes almost 94 quads of energy (1 quad = 10{sup 15} BTU or 1.05 {times} 10{sup 15} KJ). The utilities account for about 30 quads of fossil energy where coal is predominantly used as energy source. The coal is ground to finer size and fired into the boiler as dense suspension. Under dense conditions, the particles burn at slower rate due to deficient oxygen within the interparticle spacing. Thus interactions exist amongst the particles for dense clouds. While the earlier literature dealt with combustion processes of isolated particles, the recent research focusses upon the interactive combustion. The interactive combustion studies include arrays consisting of a finite number of particles, and streams and clouds of a large number of particles. Particularly stream combustion models assume cylindrical geometry and predict the ignition and combustion characteristics. The models show that the ignition starts homogeneously for dense streams of coal particles and the ignition time show a minimum as the stream denseness is increased, and during combustion, there appears to be an inner flame within the stream and an outer flame outside the stream for a short period of time. The present experimental investigation is an attempt to verify the model predictions. The set-up consists of a flat flame burner for producing hot vitiated gases, a locally fluidizing feeder system for feeding coal particles, a particle collection probe for collecting particles and an image processing system for analyzing the flame structure. The particles are introduced as a stream into the hot gases and subsequently they ignite and burn. The ash % of fired and collected particles are determined and used to estimate the gasification efficiency or burnt fraction. The parametric studies include gas temperature, oxygen % in gases, residence time, and A:F ratio of the stream.

  14. Water-quality parameters and benthic algal communities at selected streams in Minnesota, August 2000 - Study design, methods and data

    USGS Publications Warehouse

    Lee, K.E.

    2002-01-01

    This report describes the study design, sampling methods, and summarizes the physical, chemical, and benthic algal data for a component of the multiagency study that was designed to document diurnal water-quality measurements (specific conductance, pH, water temperature, and dissolved oxygen), benthic algal community composition and chlorophyll-a content, and primary productivity at 12 stream sites on 6 streams in Minnesota during August 2000. Specific conductance, pH, water temperature, dissolved oxygen concentrations and percent dissolved oxygen saturation measurements were made with submersible data recorders at 30 minute intervals for a period of 3-6 days during August 2000. Benthic algae collected from wood and rock substrate were identified and enumerated. Biovolume (volume of algal cells per unit area), density (number of cells per unit area), and chlorophyll-a content from benthic algae were determined. These data can be used as part of the multiagency study to develop an understanding of the relations among nutrient concentrations, algal abundance, algal community composition, and primary production and respiration processes in rivers of differing ecoregions in Minnesota.

  15. Solar-Geophysical Data Number 553, September 1990. Part 1 (prompt reports). Data for August 1990, July 1990 and late data

    SciTech Connect

    Coffey, H.E.

    1990-09-01

    ;Contents: Detailed index for 1990; Data for August 1990--Solar-terrestrial environment, IUWDS alert periods (Advance and Worldwide), Solar activity indices, Solar flares, Solar radio emission, Standford mean solar magnetic field; Data for July 1990--Solar active regions, Sudden ionospheric disturbances, Solar radio spectral observations, Cosmic ray measurements by neutron monitor, Geomagnetic indices; Late data--Solar radio spectral Bleien and Ondrejov Jun 90, Cosmic ray Huancayo Jun 90, Geomagnetic activity indices May-Jun 90.

  16. Evaluation of Gust and Draft Velocities from Flights of P-61C Airplanes within Thunderstorms July 24, 1946 to August 6, 1946 at Orlando, Florida

    NASA Technical Reports Server (NTRS)

    Tolefson, Harold B.

    1947-01-01

    The results obtained from gust and draft velocity measurements within thunderstorms for the period July 24, 1946 to August 6, 1946 at Orlando, Florida are presented herein. These data are summarized in tables I and II and are of the type presented in reference 1 for previous flights. In two thunderstorm traverses, indications of ambient-air temperature were obtained from photo-observer records. These data are summarized in table III.

  17. Influence of surface defects and local structure on oxygenate reaction pathways over metal oxide surfaces. Progress report, August 1991--July 1992

    SciTech Connect

    Cox, D.F.

    1992-07-01

    Work during the last year (August 1991 to July 1992) has concentrated on completing the previously initiated studies of the surface chemistry of C{sub 1} oxygenates on particularly methanol SnO{sub 2}(110) and beginning studies of C{sub 2}oxygenate surface chemistry. During the remaining six months of the second budget period, the C{sub 2} studies will be continued.

  18. An overview of the Evaluation of Oxygen Interactions with Materials 3 experiment: Space Shuttle Mission 46, July-August 1992

    NASA Technical Reports Server (NTRS)

    Koontz, Steven L.; Leger, Lubert J.; Visentine, James T.; Hunton, Don E.; Cross, Jon B.; Hakes, Charles L.

    1995-01-01

    The Evaluation of Oxygen Interactions with Materials 3 (EOIM-3) flight experiment was developed to obtain benchmark atomic oxygen reactivity data and was conducted during Space Transportation System Mission 46 (STS-46), July 31 to August 7, 1992. In this paper, we present an overview of EOIM-3 and the results of the Lyndon B. Johnson Space Center (JSC) materials reactivity and mass spectrometer/carousel experiments. Mass spectrometer calibration methods are discussed briefly, as a prelude to a detailed discussion of the mass spectrometric results produced during STS-46. Mass spectrometric measurements of ambient O-atom flux and fluence are in good agreement with the values calculated using the MSIS-86 model of the thermosphere as well as estimates based on the extent of O-atom reaction with Kapton polyimide. Mass spectrometric measurements of gaseous products formed by O-atom reaction with C(13) labeled Kapton revealed CO, CO2, H2O, NO, and NO2. Finally, by operating the mass spectrometer so as to detect naturally occurring ionospheric species, we characterized the ambient ionosphere at various times during EOIM-3 and detected the gaseous reaction products formed when ambient ions interacted with the C(13) Kapton carousel sector. By direct comparison of the results of on-orbit O-atom exposures with those conducted in ground-based laboratory systems, which provide known O-atom fluences and translational energies, we have demonstrated the strong translational energy dependence of O-atom reactions with a variety of polymers. A 'line-of-centers' reactive scattering model was shown to provide a reasonably accurate description of the translational energy dependence of polymer reactions with O atoms at high atom kinetic energies while a Beckerle-Ceyer model provided an accurate description of O-atom reactivity over a three order-of-magnitude range in translational energy and a four order-of-magnitude range in reaction efficiency. Postflight studies of the polymer samples

  19. Quality of groundwater and surface water, Wood River Valley, south-central Idaho, July and August 2012

    USGS Publications Warehouse

    Hopkins, Candice B.; Bartolino, James R.

    2013-01-01

    Residents and resource managers of the Wood River Valley of south-central Idaho are concerned about the effects that population growth might have on the quality of groundwater and surface water. As part of a multi-phase assessment of the groundwater resources in the study area, the U.S. Geological Survey evaluated the quality of water at 45 groundwater and 5 surface-water sites throughout the Wood River Valley during July and August 2012. Water samples were analyzed for field parameters (temperature, pH, specific conductance, dissolved oxygen, and alkalinity), major ions, boron, iron, manganese, nutrients, and Escherichia coli (E.coli) and total coliform bacteria. This study was conducted to determine baseline water quality throughout the Wood River Valley, with special emphasis on nutrient concentrations. Water quality in most samples collected did not exceed U.S. Environmental Protection Agency standards for drinking water. E. coli bacteria, used as indicators of water quality, were detected in all five surface-water samples and in two groundwater samples collected. Some analytes have aesthetic-based recommended drinking water standards; one groundwater sample exceeded recommended iron concentrations. Nitrate plus nitrite concentrations varied, but tended to be higher near population centers and in agricultural areas than in tributaries and less populated areas. These higher nitrate plus nitrite concentrations were not correlated with boron concentrations or the presence of bacteria, common indicators of sources of nutrients to water. None of the samples collected exceeded drinking-water standards for nitrate or nitrite. The concentration of total dissolved solids varied considerably in the waters sampled; however a calcium-magnesium-bicarbonate water type was dominant (43 out of 50 samples) in both the groundwater and surface water. Three constituents that may be influenced by anthropogenic activity (chloride, boron, and nitrate plus nitrite) deviate from this

  20. Sediment transport by streams in the Palouse River basin, Washington and Idaho, July 1961-June 1965

    USGS Publications Warehouse

    Boucher, P.R.

    1970-01-01

    The Palouse River basin covers about 3,300 square miles in southeastern Washington and northwestern Idaho. The eastern part of the basin is composed of steptoes and foothills which are generally above an altitude of 2,600 feet; the central part is of moderate local relief and is mantled chiefly by thick loess deposits; and the western part is characterized by low relief and scabland topography and is underlain mostly by basalt. Precipitation increases eastward across the study area. It ranges annually from 12 to 18 inches in the western part and from 14 to 23 inches in the central part, and it exceeds 40 inches in the eastern part. Surface runoff from the basin for the 4-year period of study (July 1961-June 1965) averaged 408,000 acre-feet per year, compared with 445,200 acre-feet per year for the 27-year period of record. The eastern part of the basin contributed about 55 percent of the total, whereas the central and western parts contributed 37 percent and 8 percent, respectively. Most sediment transport from the Palouse River basin and the highest sediment concentrations in streams occurred in the winter. Of the several storms during the study period, those of February 3-9, 1963, December 22-27, 1964, and January 27-February 4, 1965, accounted for 81 percent of the total 4-year suspended-sediment load; the storm of February 3-9, 1963, accounted for nearly one-half the total load. The discharge-weighted mean concentration of suspended sediment carried in the Palouse River past Hooper during the study period was 2,970 milligrams per liter. The average annual sediment discharge of the Palouse River at its mouth was about 1,580,000 tons per year, and the estimated average annual sediment yield was 480 tons per square mile. The yield ranged from 5 tons per square mile from the western part of the basin to 2,100 tons per square mile from the central part. The high yield from the central part is attributed to a scarcity of vegetal cover, to the fine-grained loess soils

  1. Relative contributions of external SST forcing and internal atmospheric variability to July-August heat waves over the Yangtze River valley

    NASA Astrophysics Data System (ADS)

    Chen, Xiaolong; Zhou, Tianjun

    2017-08-01

    The Yangtze River valley (YRV), located in central-eastern China, has witnessed increased numbers of heat waves in the summer since 1951. Knowing what factors control and affect the interannual variability of heat waves, especially distinguishing the contributions of anomalous sea surface temperature (SST) forcings and those of internal modes of variability, is important to improving heat wave prediction. After evaluating 70 members of the atmospheric model intercomparison project (AMIP) experiments from the 25 models that participated in the coupled model intercomparison project phase 5 (CMIP5), 13 high-skill members (HSMs) are selected to estimate the SST-forced variability. The results show that approximately 2/3 of the total variability of the July-August heat waves in the YRV during 1979-2008 can be attributed to anomalous SST forcings, whereas the other 1/3 are due to internal variability. Within the SST-forced component, one-half of the influence is from the impact of the El Niño-Southern Oscillation (ENSO) and the other half is from non-ENSO related SST forcings, specifically, the SST anomalies in the North Pacific and the North Atlantic. Both the decaying El Niño and developing La Niña accompanied by a warm Indian Ocean and cold central Pacific, respectively, are favorable to hotter summers in the YRV because these patterns strengthen and extend the western North Pacific Subtropical High (WNPSH) westwards, for which the decaying ENSO plays a dominant role. The internal variability shows a circumglobal teleconnection in which Rossby waves propagate southeastwards over the Eurasian Continent and strengthen the WNPSH. Atmospheric model sensitivity experiments confirm that non-ENSO SST forcings can modulate the WNPSH and heat wave variability by projecting their influences onto the internal mode.

  2. Discharge and travel-time determinations in the Royal Spring groundwater basin, Kentucky. Research report July 1983-August 1984

    SciTech Connect

    Thrailkill, J.; Gouzie, D.R.

    1984-08-01

    Groundwater flow in many karst regions, including the Inner Bluegrass Karst Region of central Kentucky in which the study area was located, is unlike groundwater flow in granular aquifers. At least the major flows are turbulent and often with a free surface in large conduits, and applying concepts based on Darcy's Law to describe and model these flows is inappropriate. Parameters such as linear velocity, channel geometry, and conveyance used to describe surface stream flows are more applicable, and the primary objective of the project was to estimate these in a groundwater basin using the travel time of dye slugs and discharges obtained by dye dilution. These data were also needed to determine the travel time-discharge relationship required to manage contaminant spills and evaluate methods of enhancing low flows in the basin, the second and third objective of the project. These latter two objectives are of importance because the flow in the Royal Spring groundwater basin that was investigated is used as a municipal water supply.

  3. Optimizing Locations of Stream Restoration Structures to Maximize Hyporheic Zone Path Lengths in a Pool and Riffle Sequence

    NASA Astrophysics Data System (ADS)

    Beck, M.; Lowry, C.

    2016-12-01

    The exchange of surface water and groundwater in the hyporheic zone encourages biogeochemical reactions that naturally attenuate nutrients in streams. Stream restoration efforts often include instream, dam-like structures that increase hyporheic exchange, with the goal of enhancing natural attenuation. The effectiveness of these structures on improving stream quality has been widely researched, however the ideal installation location for these structures along a stream reach to achieve maximum hyporheic exchange must be optimized based on physical and temporal changes in bed forms and hydrologic drivers. Through the use of the finite difference model MODFLOW and particle tracking code MODPATH, the optimal location for emplacement of these stream barriers to maximize the spatial extent of the hyporheic zone was explored. In addition, impacts of seasonal changes in stream stage were also evaluated based on hyporheic zone path lengths. A total of sixteen realizations were created to vary the location of the stream barrier relative to a pool and riffle sequence. Once the ideal location of the barrier was determined, a region of variable groundwater discharge was prescribed to determine the effect of focused discharge. Using MODPATH, imaginary particles identify areas of maximized hyporheic exchange. The results show that the optimal location of the stream restoration structure changes based on stream stage and groundwater discharge zones. The spatial location of the instream barrier relative to zones of concentrated groundwater discharge as well as the location along a pool and riffle sequence has a significant effect on the extent of the hyporheic zone.

  4. Evaluation of metal loading to streams near Creede, Colorado, August and September 2000

    USGS Publications Warehouse

    Kimball, B.A.; Runkel, R.L.; Walton-Day, K.; Stover, B.K.

    2006-01-01

    Decisions about remediation of mine drainage on the watershed scale require an understanding of metal contributions from all sources to be able to choose the best sites for remediation. A hydrologic framework to study metal loading in the Willow Creek watershed, a tributary to the Rio Grande River, was established by conducting a series of tracer-injection studies. Each study used the tracer-dilution method in conjunction with synoptic sampling to determine the spatial distribution of discharge and concentration. Discharge and concentration data were then used to develop mass-loading curves for the metals of interest. The discharge and load profiles (1) identify the principal sources of load to the streams; (2) demonstrate the scale of unsampled, dispersed subsurface inflows; and (3) estimate the amount of natural attenuation. The greatest source of metal loads was from the Nelson Tunnel on West Willow Creek, which contributed 158 kilograms per day of zinc to the stream. Additional loading from other dispersed, subsurface inflows along West Willow Creek added substantial loads, but these were small in comparison to the loads from the Nelson Tunnel. No significant contributions of metal load from potential sources occurred along East Willow Creek. The lack of measurable loading may be a result of previous remedial actions along that stream. The lower Willow Creek section had relatively small contributions of load compared to what had been contributed upstream. This watershed approach provides a detailed snapshot of metal load for the watershed to support remediation decisions and quantifies processes that affect metal transport.

  5. Large wood recruitment processes and transported volumes in Swiss mountain streams during the extreme flood of August 2005

    NASA Astrophysics Data System (ADS)

    Steeb, Nicolas; Rickenmann, Dieter; Badoux, Alexandre; Rickli, Christian; Waldner, Peter

    2017-02-01

    The extreme flood event that occurred in August 2005 was the most costly (documented) natural hazard event in the history of Switzerland. The flood was accompanied by the mobilization of > 69,000 m3 of large wood (LW) throughout the affected area. As recognized afterward, wood played an important role in exacerbating the damages, mainly because of log jams at bridges and weirs. The present study aimed at assessing the risk posed by wood in various catchments by investigating the amount and spatial variability of recruited and transported LW. Data regarding LW quantities were obtained by field surveys, remote sensing techniques (LiDAR), and GIS analysis and was subsequently translated into a conceptual model of wood transport mass balance. Detailed wood budgets and transport diagrams were established for four study catchments of Swiss mountain streams, showing the spatial variability of LW recruitment and deposition. Despite some uncertainties with regard to parameter assumptions, the sum of reconstructed wood input and observed deposition volumes agree reasonably well. Mass wasting such as landslides and debris flows were the dominant recruitment processes in headwater streams. In contrast, LW recruitment from lateral bank erosion became significant in the lower part of mountain streams where the catchment reached a size of about 100 km2. According to our analysis, 88% of the reconstructed total wood input was fresh, i.e., coming from living trees that were recruited from adjacent areas during the event. This implies an average deadwood contribution of 12%, most of which was estimated to have been in-channel deadwood entrained during the flood event.

  6. Estimates of Flow Duration, Mean Flow, and Peak-Discharge Frequency Values for Kansas Stream Locations

    USGS Publications Warehouse

    Perry, Charles A.; Wolock, David M.; Artman, Joshua C.

    2004-01-01

    Streamflow statistics of flow duration and peak-discharge frequency were estimated for 4,771 individual locations on streams listed on the 1999 Kansas Surface Water Register. These statistics included the flow-duration values of 90, 75, 50, 25, and 10 percent, as well as the mean flow value. Peak-discharge frequency values were estimated for the 2-, 5-, 10-, 25-, 50-, and 100-year floods. Least-squares multiple regression techniques were used, along with Tobit analyses, to develop equations for estimating flow-duration values of 90, 75, 50, 25, and 10 percent and the mean flow for uncontrolled flow stream locations. The contributing-drainage areas of 149 U.S. Geological Survey streamflow-gaging stations in Kansas and parts of surrounding States that had flow uncontrolled by Federal reservoirs and used in the regression analyses ranged from 2.06 to 12,004 square miles. Logarithmic transformations of climatic and basin data were performed to yield the best linear relation for developing equations to compute flow durations and mean flow. In the regression analyses, the significant climatic and basin characteristics, in order of importance, were contributing-drainage area, mean annual precipitation, mean basin permeability, and mean basin slope. The analyses yielded a model standard error of prediction range of 0.43 logarithmic units for the 90-percent duration analysis to 0.15 logarithmic units for the 10-percent duration analysis. The model standard error of prediction was 0.14 logarithmic units for the mean flow. Regression equations used to estimate peak-discharge frequency values were obtained from a previous report, and estimates for the 2-, 5-, 10-, 25-, 50-, and 100-year floods were determined for this report. The regression equations and an interpolation procedure were used to compute flow durations, mean flow, and estimates of peak-discharge frequency for locations along uncontrolled flow streams on the 1999 Kansas Surface Water Register. Flow durations, mean

  7. A summary of the proceedings of the Eleventh International Symposium on the Neurobiology and Neuroendocrinology of Aging, Bregenz, Austria, July 29-August 3, 2012.

    PubMed

    Brown-Borg, Holly M; Borg, Kurt E

    2013-07-01

    A summary of the Eleventh International Symposium on the Neurobiology and Neuroendocrinology of Aging that was held in July 29-August 3 in Bregenz, Austria, is presented. Sixteen of the speakers who presented at the conference submitted review papers covering the topic of their presentation as well as an overview of their respective fields and are included in this special issue. The abstracts from each poster presentation are also included at the end of the special issue. Copyright © 2013 Elsevier Inc. All rights reserved.

  8. A summary of the Proceedings of the Twelfth International Symposium on the Neurobiology and Neuroendocrinology of Aging, Bregenz, Austria July 27-August 1, 2014.

    PubMed

    Brown-Borg, Holly M; Borg, Kurt E

    2015-08-01

    A summary of the Twelfth International Symposium on the Neurobiology and Neuroendocrinology of Aging that was held July 27-August 1, 2014 in Bregenz, Austria, is presented. Fifteen of the speakers that presented at the conference submitted review papers covering the topic of their presentation as well as an overview of their respective fields and are included in this special issue. The abstracts from each poster presentation as well as seven of the speakers' abstracts are also included at the end of the preface to the special issue. Copyright © 2015 Elsevier Inc. All rights reserved.

  9. Electromagnetic retransmission system for locating trapped mine workers. Open file report (final), August 1978-December 1979

    SciTech Connect

    Raab, F.H.; Hansen, P.K.

    1980-02-01

    The electromagnetic retransmission system is a new, automated method of locating trapped mine workers. This technique overcomes many limitations inherent in electromagnetic direction finding by reducing the effects of the conducting ground to an acceptable maximum, by finding position accurately in the presence of antenna tilt, and by eliminating the need for the receiver to be located directly above the subsurface transmitter.

  10. Subglacial hydrology as a control on ice stream shear margin locations

    NASA Astrophysics Data System (ADS)

    Perol, Thibaut; Rice, James R.; Platt, John D.; Suckale, Jenny

    2015-11-01

    Ice streams are fast-flowing bands of ice separated from the nearly stagnant ice in the adjacent ridge by zones of highly localized deformation known as shear margins. However, it is presently unclear what mechanisms can control the location of shear margins. Within the shear margin, the transition from a slipping bed beneath the ice stream to a locked bed beneath the ridge concentrates stresses. We show that subglacial hydrology can select the shear margin location by strengthening the till within the margin. Our study uses a two-dimensional thermo-mechanical model in a cross-section perpendicular to the direction of flow. We show that the intense straining at the shear margins can generate large temperate regions within the deforming ice. Assuming that the melt generated in the temperate ice collects in a drainage channel at the base, we show that the channel locally decreases the pore pressure in the till. For a Coulomb-plastic rheology, this depressed pore pressure leads to a basal strength substantially higher than that inferred under the majority of the stream. Our results show that the additional basal resistance produced by the channel can reduce the stresses concentrated on the locked bed. Matching the model to surface velocity data at Whillans ice stream margin, we show that a stable shear margin occurs when the slipping-to-locked bed transition is less than 500 m away from a channel operating at an effective pressure of 200 kPa if the basal hydraulic transmissivity is equivalent to that of a water-film 0.2 mm thick.

  11. Bioethanol Co-Location Study: August 15, 2000 - February 28, 2002

    SciTech Connect

    Morris, G.

    2002-11-01

    This report describes the results of an analysis of the generic economic feasibility of co-locating ethanol production facilities with California biomass power plants, and with coal-fired power plants in the Southwest.

  12. Subglacial hydrology as a control on ice stream shear margin locations

    NASA Astrophysics Data System (ADS)

    Perol, T.; Rice, J. R.; Platt, J. D.; Suckale, J.

    2015-12-01

    Ice streams are fast-flowing bands of ice separated from the nearly stagnant ice in the adjacent ridge by zones of highly localized deformation known as shear margins. However, it is presently unclear what mechanisms can control the location of shear margins, and possibly allow them to migrate. Within the shear margin, the transition from a freely slipping bed beneath the ice stream to a locked bed beneath the ridge concentrates stresses on the locked bed. We show that subglacial hydrological processes can select the shear margin location by strengthening the subglacial till within the margin, reducing the stress concentration associated with the transition from a slipping to a locked bed. Our study uses a two-dimensional thermo-mechanical model in a cross-section perpendicular to the direction of flow. We show that the intense straining at the shear margins can generate large temperate regions within the deforming ice. Assuming that the melt generated in the temperate ice collects in a drainage channel at the base of the margin, we show that the channel locally decreases the pore pressure in the subglacial till. For a Coulomb-plastic rheology, this depressed pore pressure leads to a basal shear strength substantially higher than that inferred under the majority of the stream. Our results show that the additional basal resistance produced by the channel can offset the large stresses concentrated on the locked bed, allowing the drainage channel to select the margin location. Matching the model to surface velocity data near Dragon Margin within Whillans ice stream B2, we show that a stable shear margin occurs when the slipping-to-locked bed transition is less than 500 m away from a channel operating at an effective pressure of 200 kPa if the basal hydraulic transmissivity is equivalent to that of a water-film ~0.2 mm thick. Extending these results we explore how the shear margin location varies with the effective pressure of the channel and hydraulic properties of

  13. Total Mercury and Methylmercury in Indiana Streams, August 2004-September 2006

    USGS Publications Warehouse

    Ulberg, Amanda L.; Risch, Martin R.

    2008-01-01

    Total mercury and methylmercury were determined by use of low (subnanogram per liter) level analytical methods in 225 representative water samples collected following ultraclean protocols at 25 Indiana monitoring stations in a statewide network, on a seasonal schedule, August 2004-September 2006. The highest unfiltered total mercury concentrations were at six monitoring stations - five that are downstream from urban and industrial wastewater discharges and that have upstream drainage areas more than 1,960 square miles and one that is downstream from active and abandoned mine lands and that has an upstream drainage area of 602 square miles. Total mercury concentrations in unfiltered samples ranged from 0.24 to 26.9 nanograms per liter (ng/L), with a median of 2.35 ng/L. The highest concentrations of total mercury, those in the 90th percentile and above, were more than 9.05 ng/L, and most were in samples collected during winter and spring 2006 during changing streamflow hydrograph conditions. Seasonal medians for unfiltered total mercury were highest during winter and spring. Instantaneous streamflow and turbidity at the time of sample collection also were highest in winter and spring and potentially indicate conditions for the most particulate mercury transport. Samples with the highest total mercury concentrations were from water that had the highest turbidity at the time of sample collection. Unfiltered total mercury concentrations were significantly lower in samples collected at five stations downstream from dams. Values for particulate total mercury and streamflow also were significantly lower at these five stations. Total mercury concentrations equaled or exceeded the 2007 Indiana chronic aquatic criterion of 12 ng/L in 5.8 percent of samples and at 10 monitoring stations. Most of the total mercury in these 13 samples was estimated to be particulate. Most of the samples with mercury concentrations that equaled or exceeded the 12 ng/L criterion were collected

  14. Chemical quality of bottom sediments in selected streams, Jefferson County, Kentucky, April-July 1992

    USGS Publications Warehouse

    Moore, B.L.; Evaldi, R.D.

    1995-01-01

    Bottom sediments from 25 stream sites in Jefferson County, Ky., were analyzed for percent volatile solids and concentrations of nutrients, major metals, trace elements, miscellaneous inorganic compounds, and selected organic compounds. Statistical high outliers of the constituent concentrations analyzed for in the bottom sediments were defined as a measure of possible elevated concentrations. Statistical high outliers were determined for at least 1 constituent at each of 12 sampling sites in Jefferson County. Of the 10 stream basins sampled in Jefferson County, the Middle Fork Beargrass Basin, Cedar Creek Basin, and Harrods Creek Basin were the only three basins where a statistical high outlier was not found for any of the measured constituents. In the Pennsylvania Run Basin, total volatile solids, nitrate plus nitrite, and endrin constituents were statistical high outliers. Pond Creek was the only basin where five constituents were statistical high outliers-barium, beryllium, cadmium, chromium, and silver. Nitrate plus nitrite and copper constituents were the only statistical high outliers found in the Mill Creek Basin. In the Floyds Fork Basin, nitrate plus nitrite, phosphorus, mercury, and silver constituents were the only statistical high outliers. Ammonia was the only statistical high outlier found in the South Fork Beargrass Basin. In the Goose Creek Basin, mercury and silver constituents were the only statistical high outliers. Cyanide was the only statistical high outlier in the Muddy Fork Basin.

  15. Outbreak of Influenza A(H3N2) Variant Virus Infections Among Persons Attending Agricultural Fairs Housing Infected Swine - Michigan and Ohio, July-August 2016.

    PubMed

    Schicker, Rebekah S; Rossow, John; Eckel, Seth; Fisher, Nicolas; Bidol, Sally; Tatham, Lilith; Matthews-Greer, Janice; Sohner, Kevin; Bowman, Andrew S; Avrill, James; Forshey, Tony; Blanton, Lenee; Davis, C Todd; Schiltz, John; Skorupski, Susan; Berman, LaShondra; Jang, Yunho; Bresee, Joseph S; Lindstrom, Stephen; Trock, Susan C; Wentworth, David; Fry, Alicia M; de Fijter, Sietske; Signs, Kimberly; DiOrio, Mary; Olsen, Sonja J; Biggerstaff, Matthew

    2016-10-28

    On August 3, 2016, the Ohio Department of Health Laboratory reported to CDC that a respiratory specimen collected on July 28 from a male aged 13 years who attended an agricultural fair in Ohio during July 22-29, 2016, and subsequently developed a respiratory illness, tested positive by real-time reverse transcription-polymerase chain reaction (rRT-PCR) for influenza A(H3N2) variant* (H3N2v). The respiratory specimen was collected as part of routine influenza surveillance activities. The next day, CDC was notified of a child aged 9 years who was a swine exhibitor at an agricultural fair in Michigan who became ill on July 29, 2016, and tested positive for H3N2v virus at the Michigan Department of Health and Human Services Laboratory. Investigations by Michigan and Ohio health authorities identified 18 human infections linked to swine exhibits at agricultural fairs. To minimize transmission of influenza viruses from infected swine to visitors, agricultural fair organizers should consider prevention measures such as shortening the time swine are on the fairgrounds, isolating ill swine, maintaining a veterinarian on call, providing handwashing stations, and prohibiting food and beverages in animal barns. Persons at high risk for influenza-associated complications should be discouraged from entering swine barns.

  16. Solar-Geophysical Data Number 552, August 1990. Part 1 (prompt reports). Data for July, June 1990, and late data

    SciTech Connect

    Coffey, H.E.

    1990-08-01

    ;Contents: Detailed Index for 1989-1990; Data for July 1990--Solar-terrestrial environment, IUWDS alert periods (Advance and worldwide), Solar activity indices, Solar flares, Solar radio emission, Stanford mean solar magnetic field; Data for June 1990--Solar active regions, Sudden ionospheric disturbances, Solar radio spectral observations, Cosmic ray measurements by neutron monitor, Geomagnetic indices; Late Data--Solar radio spectral observations, Weissenau March 1990, Cosmic ray measurements by neutron monitor, Huancayo April-May 1990.

  17. Long-Term Warm-Season Stream Temperature Variations and Changes Over Siberian Lena River

    NASA Astrophysics Data System (ADS)

    Liu, B.; Yang, D.

    2003-12-01

    Stream temperature is an important environmental variable that has considerable significance in regional hydrology, climate, and ecology systems. Few investigations on long-term stream temperature variations in Arctic regions have been undertaken. This research examined and analyzed long-term (1950-1992) stream temperature data collected at dozens of stations in the Lena River basin during (open water) warm seasons. Preliminary results show that: (1) the stream temperature across the whole basin shows a significant positive trend during early warm season, which may indicate a response of early snowmelt due to climate warming in the winter and spring seasons; (2) over the Aldan tributary, stream temperatures collected at elevated locations are much lower than those at low valley stations; (3) in the Upper Lena river, stream temperatures have very strong negative trend in late July to early August, which imply certain climatic factors is affecting the stream temperature regime during this period; and, (4) in the Vilui subbasin, stream temperatures are strongly affected by reservoir regulations, for instance, extremely strong positive and negative trends appear at the station close to reservoir in early and middle warm season, respectively. The research has defined stream temperature regime and identified its long-term changes/variations over Lena river basin. Our future work will examine the impacts of climate change on river thermal condition. We will also study the effects of local environmental settings to stream temperatures and aquatic life.

  18. Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2002 to June 30, 2003

    DTIC Science & Technology

    2003-01-01

    curve of daily flows for station 16226200, North Halawa Stream at Xeriscape Garden Oahu, Hawaii...Storm drain C, Xeriscape garden, and Quarantine stations for July 1 to September 30, 2002, Oahu, Hawaii...discharge at Xeriscape garden station (16226200) for October 1 to December 31, 2002; detail of the 2-day period from October 14, 2002 to October 15, 2002

  19. Solar-Geophysical Data Number 576, August 1992. Part 1 (prompt reports). data for July, June 1992 and late data

    SciTech Connect

    Coffey, H.E.

    1992-08-01

    The contents include: Detailed index for 1991-1992; Data for July 1992--Solar-terrestrial environment, IUWDS alert periods (Advance and Worldwide), Solar activity indices, Solar flares, Solar radio emission, Stanford mean solar magnetic field; Data for June 1992--Solar active regions, Sudden ionospheric disturbances, Solar radio spectral observations, Cosmic ray measurements by neutron monitor, Geomagnetic indices; Late data--Cosmic rays Climax May 92; Huancayo Apr-May 92, Geomagnetic indices May 92, Sudden commencements Apr-May 92, Errata--Geomagnetic aa indices Oct 91.

  20. Whirling disease among snake river cutthroat trout in two spring streams in Wyoming

    USGS Publications Warehouse

    Hubert, W.A.; Joyce, M.P.; Gipson, R.; Zafft, D.; Money, D.; Hawk, D.; Taro, B.

    2002-01-01

    We assessed endemic age-0 cutthroat trout Oncorhynchus clarki for evidence of pathology associated with Myxobolus cerebralis in two streams formed by springs in western Wyoming. We hypothesized that the location of spawning sites in spring streams would affect the extent of exposure of cutthroat trout fry to M. cerebralis triactinomyxons (tams), occurrence of the parasite in their bodies, and clinical signs of whirling disease. The spring streams were warm relative to nearby streams flowing from the mountains or spawning and emergence of fry was early compared with fish in mountain streams. Tams were abundant early in the summer and clinical signs of whirling disease among age-0 fish were seen as early as mid-June in one stream. There were high densities of tams in one stream, and densities declined with upstream progression from May through July, whereas in the other stream, low densities of tams were observed in the downstream portion early in the summer, and they were not detected in July and August. Age-0 cutthroat trout were abundant; clinical signs of whirling disease were evident, and histological evidence of whirling disease was common in the stream where tams were abundant. Low densities of age-0 cutthroat trout and no clinical signs of whirling disease were observed in the stream where tams were not abundant. Among sentinel fish in the stream with abundant tams, we found extensive occurrence of M. cerebralis, with many fish showing clinical signs and histological evidence of pathology associated with M. cerebralis. The proportion of sentinel fish with clinical and histological signs of whirling disease decreased with upstream progression. In the stream with low tam, densities sentinel fish became infected with M. cerebralis, but there were essentially no clinical signs or histological indications of whirling disease. ?? 2002 by the American Fisheries Society.

  1. FOREWORD: Proceedings of the International Conference on Nanoscience and Technology (ICNT&T 2006) (30 July to 4 August 2006, Basel, Switzerland)

    NASA Astrophysics Data System (ADS)

    Meyer, Ernst; Hegner, Martin; Gerber, Christoph; Güntherodt, Hans-Joachim

    2007-04-01

    The International Conference on Nanoscience and Technology (ICNT&T 2006) was held from 30 July to 4 August 2006 in Basel, Switzerland. At the conference more than 1600 researchers gathered both to mark the anniversaries of STM and AFM and to celebrate the expansion and substantiation of nanoscience in general. The breadth of modern nanoscience and its application was underlined by 40 different topics with more than 500 presentations and 900 posters. We would like to take this opportunity to thank all authors for their valuable contribution to make these proceedings a comprehensive reflection of the scientific excitement of the ICN&T 2006 conference. Ernst Meyer, Martin Hegner, Christoph Gerber and Hans-Joachim Güntherodt Editors

  2. Application of railgun principle to high-velocity hydrogen pellet injection for magnetic fusion reactor refueling. Technical progress report, [July 16, 1990--August 16, 1991

    SciTech Connect

    Kim, K.

    1991-08-01

    This report contains three documents describing the progress made by the University of Illinois electromagnetic railgun program sponsored by the Office of Fusion Energy of the United States Department of Energy during the period from July 16, 1990 to August 16, 1991. The first document contains a brief summary of the tasks initiated, continued, or completed, the status of major tasks, and the research effort distribution, estimated and actual, during the period. The second document contains a description of the work performed on time resolved laser interferometric density measurement of the railgun plasma-arc armature. The third document is an account of research on the spectroscopic measurement of the electron density and temperature of the railgun plasma arc.

  3. An aerial radiological survey of the Superconducting Super Collider Laboratory and surrounding area, Waxahachie, Texas. Date of survey: July--August 1991

    SciTech Connect

    Fritzsche, A.E.

    1993-02-01

    An aerial radiological survey was conducted over the Superconducting Super Collider Laboratory (SSCL) site from July 22 through August 20,1991. Parallel lines were flown at intervals of 305 meters over a 1,036-square-kilometer (400-square-mile) area surrounding Waxahachie, Texas. The 70,000 terrestrial gamma energy spectra obtained were reduced to an exposure rate contour map overlaid on a United States Geological Survey (USGS) map of the area. The mean terrestrial exposure rate measured was 5.4 {mu}R/h at 1 meter above ground level. Comparison to ground-based measurements shows good agreement. No anomalous or man-made isotopes were detected.

  4. Measurements of the summer surface heat budget of the Northeast Water Polynya. USCGC Polar Sea cruise, July 15--August 15, 1992

    SciTech Connect

    Minnett, P.J.

    1994-03-01

    A research cruise of the USCGC Polar Sea to the Northeast Water Polynya, off the eastern coast of Greenland (77--81{degree}N, 6--17{degree}W), was made from mid-July to mid-August of 1992 (NEWP `92) as the first field component of the multi-disciplinary study of a high-Arctic polynya funded by the NSF as part of the Arctic Systems Science program. Instruments to measure the components of the surface heat budget of the polynya were installed on a foremast at the bow of the ship. This report presents the measured variables and derived surface fluxes in graphical and tabulated form. Profiles of atmospheric temperature and humidity were taken using radiosondes, and these are also presented.

  5. Resume of the activities of the Aeronautical Experimental Institute, Rome, during the months of May, June, July and August 1921

    NASA Technical Reports Server (NTRS)

    1922-01-01

    This report is a listing of the different studies conducted by the Institute in May thru August of 1921. The aerodynamical section studied: the aerodynamical characteristics of a very thick concave-convex wing; the disturbance caused in a tunnel by the presence of a disk, placed in relation with a transversely infinite barrier; vertical pressure in a wing of low head resistance; the drag caused by two small doors in the sides of the fuselage. Some other studies conducted by the Institute included: depressions in the interior of the model of a wing; the influence of a conical casing fitted with helicoidal flanges centered on the hub of the propeller; the influence of the velocity of translation on the aerodynamical effects of the propeller; and the influence of a honeycomb placed in the tunnel.

  6. Field analytical screening program: PCP method. Innovative technology evaluation report. Report for 1 July-31 August 1993

    SciTech Connect

    Hess, E.; Hamilton, D.

    1995-08-01

    This innovative technology evaluation report (ITER) presents information on the demonstration of the U.S. Environmental Protection Agency (EPA) Region 7 Superfund Field Analytical Screening Program (FASP) method for determining pentachlorophenol (PCP) contamination in soil and water. This method was demonstrated in Norrisville, North Carolina, in August 1993. The FASP PCP Method was developed by the EPA Superfund Branch for use at Superfund sites. The method uses a gas chromatograph (GC) equipped with a megabore capillary column and either a flame ionization detector (FID) or an electron capture detector (ECD). Gas chromatography is an EPA-approved method for determining PCP concentrations in soil, water, and waste samples. The FASP PCP Method is an abbrevaited, modified version of approved methods. Soil and water samples require extraction before GC analysis. To remove interferences caused by petroleum hydrocarbons, an acid-base partition cleanup step is used during the FASP PCP Method.

  7. Tree-ring latewood width based July-August SPEI reconstruction in South China since 1888 and its possible connection with ENSO

    NASA Astrophysics Data System (ADS)

    Zhao, Yesi; Shi, Jiangfeng; Shi, Shiyuan; Yu, Jian; Lu, Huayu

    2017-02-01

    Our understanding of the long-term hydroclimate variations in South China is prohibited by the shortness of meteorological records. Paleoclimatic proxies, such as tree-rings, can be pursued to extend the meteorological records back for centuries to help us better understand hydroclimatic conditions. In this study, we reconstructed the July-August standardized precipitation-evapotranspiration index (SPEIJul-Aug) based on a newly developed 127-yr adjusted latewood width chronology from Tsuga longibracteata, South China. The chronology explained 40% of the actual SPEIJul-Aug variance in the period 1953-2014. The reconstructed SPEIJul-Aug can represent large-scale July-August SPEI variations over South China, including northern Guangxi, Hunan, and Guizhou provinces. From the perspective of the past 127 years, the extreme summer drought in 2013 was not unusual because more extreme drought events occurred in the first half of the 20th century. A significant 2.0-3.6-yr hydroclimatic cycle existed in the reconstruction, which indicated that the SPEIJul-Aug might be driven by El Niño-Southern Oscillation (ENSO). We further checked the time-dependency of the relationship between SPEIJul-Aug and ENSO and found that it was unstable. Their relationship was weak before the 1950s, became significant from the 1950s to early 1990s, and then dropped to be weak again and even out of phase since the early 1990s, which may be attributable to the significant westward extension of the western Pacific subtropical high.

  8. Tree-ring latewood width based July-August SPEI reconstruction in South China since AD 1888 and its possible connection with ENSO

    NASA Astrophysics Data System (ADS)

    Zhao, Yesi; Shi, Jiangfeng; Shi, Shiyuan; Yu, Jian; Lu, Huayu

    2017-04-01

    Our understanding of the long-term hydroclimate variations in South China is prohibited by the shortness of meteorological records. Paleoclimatic proxies, such as tree-rings, can be pursued to extend the meteorological records back for centuries to help us better understand hydroclimatic conditions. In this study, we reconstructed the July-August Standardized Precipitation-Evapotranspiration Index (SPEIJul-Aug) based on a newly developed 127-year adjusted latewood width chronology from Tsuga longibracteata, South China. In specific, the latewood width chronology was regressed on the earlywood width chronology using a simple linear regression, and the residuals plus a constant 1.0 were defined as the adjusted latewood width chronology. The chronology explained 40% of the actual SPEIJul-Aug variance in the period 1953-2014. The reconstructed SPEIJul-Aug can represent large-scale July-August SPEI variations over South China, including northern Guangxi, Hunan, and Guizhou provinces. From the perspective of the past 127 years, the extreme summer drought in 2013 was not unusual because more extreme drought events occurred in the first half of the 20th century. A significant 2.0-3.6-year hydroclimatic cycle existed in the reconstruction, which indicated that the SPEIJul-Aug might be driven by El Niño-Southern Oscillation (ENSO). We further checked the time-dependency of the relationship between SPEIJul-Augand ENSO and found that it was unstable. Their relationship was weak before the 1950s, became significant from the 1950s to early 1990s, and then dropped to be weak again and even out of phase since the early 1990s, which may be attributable to the significant westward extension of the western Pacific subtropical high. This study indicates that summer hydroclimate in South China can be reconstructed based on adjusted latewood width, and will be better understood when more and longer adjusted latewood width chronologies are obtained in the near future.

  9. Recycled brake linings as partial aggregate substitute in asphalt paving. Construction and final report. Report for July 1992-August 1996

    SciTech Connect

    Miller, P.A.; Sukley, R.

    1996-09-01

    The purpose of this project was to evaluate the performance of asphalt containing various percentages of brake lining as an aggregate, and compare its performance to that of normal asphalt containing natural aggregate. This project is an effort to explore alternate ways to use waste product. Four test section of FB-2 Modified mix containing brake lining materials were placed in July 1992 along with one control section on SR 3022 in Mercer county. To date all sections are performing satisfactory, and Brake linings should be recommended as a viable partial replacement of aggregate in bituminous materials. This study only considered the performance of only off-spec brake linings, therefore, any performance data or enviromental effects of placement of used brake material should be addressed.

  10. Host age, but not host location within a stream, is correlated with the prevalence of gut parasites in water striders.

    PubMed

    Gurski, Kata C; Ebbert, Mercedes A

    2003-06-01

    We tested for correlations between the geographic, demographic, and temporal distribution of an aquatic insect host and the prevalence of its gut parasites in southwestern Ohio. Trypanosomatids were present in Aquarius remigis collected from all 4 streams surveyed in the watershed. Prevalence declined dramatically from May to July and remained low through the fall. This pattern was consistent over all sites of our study, with no effect of stream, stream site (upstream vs. downstream), or host sex on prevalence. Stage, however, was strongly correlated with prevalence; adults were more likely to be infected than were nymphs. We argue that behavioral differences between the 2 age classes may account for the decline in prevalence; opportunities for transmission are highest in the spring, when mating activities increase adult host contact rates, and decline in the summer, when contact rates decrease.

  11. How a complex basaltic volcanic system works: Constraints from integrating seismic, geodetic, and petrological data at Mount Etna volcano during the July-August 2014 eruption

    NASA Astrophysics Data System (ADS)

    Viccaro, Marco; Zuccarello, Francesco; Cannata, Andrea; Palano, Mimmo; Gresta, Stefano

    2016-08-01

    Integrating geodetic, seismic, and petrological data for a recent eruptive episode at Mount Etna has enabled us to define the history of magma storage and transfer within the multilevel structure of the volcano, providing spatial and temporal constraints for magma movements before the eruption. Geodetic data related to the July-August 2014 activity provide evidence of a magma reservoir at ~4 km below sea level. This reservoir pressurized from late March 2014 and fed magmas that were then erupted from vents on the lower eastern flank of North-East Crater (NEC) and at New South-East Crater (NSEC) summit crater during the July eruptive activity. Magma drainage caused its depressurization since mid-July. Textural and microanalytical data obtained from plagioclase crystals indicate similar disequilibrium textures and compositions at the cores in lavas erupted at the base of NEC and NSEC, suggesting comparable deep histories of evolution and ascent. Conversely, the compositional differences observed at the crystal rims have been associated to distinct degassing styles during storage in a shallow magma reservoir. Seismic data have constrained depth for a shallow part of the plumbing system at 1-2 km above sea level. Timescales of magma storage and transfer have also been calculated through diffusion modeling of zoning in olivine crystals of the two systems. Our data reveal a common deep history of magmas from the two systems, which is consistent with a recharging phase by more mafic magma between late March and early June 2014. Later, the magma continued its crystallization under distinct chemical and physical conditions at shallower levels.

  12. Solar-Geophysical Data Number 554, October 1990. Part 1 (prompt reports). Data for September, August 1990, and late data. Explanation of data reports issued as Number 515 (Supplement) July 1987

    SciTech Connect

    Coffey, H.E.

    1990-10-01

    Contents: Detailed index for 1990; Data for September 1990 -- Solar-terrestrial environment, IUWDS alert periods (Advance and worldwide), Solar activity indices, Solar flares, Solar radio emission, Stanford mean solar magnetic field; Data for August 1990 -- Solar active regions, Sudden ionospheric disturbances, Solar radio spectral observations, Cosmic ray measurements by neutron monitor, Geomagnetic indices; Late data -- Solar radio spectral observations (Potsdam and Weissenau July 1990), Cosmic ray measurements by neutron monitor (Climax and Huancayo July 1990), Geomagnetic indices.

  13. Center for Strategic Leadership, Issue Paper, October 2003, Volume 10-03. Assisting Professional Militaries in Latin America: National Security Strategy Development Workshop Held in La Paz, Bolivia on 28 July-1 August 2003

    DTIC Science & Technology

    2003-10-01

    Command, and in collaboration with the Bolivian Escuela de Altos Estudios Nacionales (E.A.E.N.), a USAWC-CSL team conducted a DISS in La Paz , Bolivia...National Security Strategy Development Workshop, La Paz , Bolivia 28 July – 1 August 2003 The Challenge of Professionalization Professionalization of...4. TITLE AND SUBTITLE Assisting Professional Militaries in Latin America: National Security Strategy Development Workshop, La Paz , Bolivia 28 July

  14. Modification of coal fly ash size distribution. Annual technical progress report No. 1, August 1, 1980-July 31, 1981

    SciTech Connect

    Clark, R.D.; Sveum, L.K.

    1981-09-29

    A study of coal fly ash formation was initiated on August 1, 1980. The specific objectives of the study are to modify coal fly ash particle size distribution by changes in furnace gas composition and additives to the coal. Coal from four power plants and ash from 14 power plants has been obtained for use in this project. A laboratory scale coal combustor has been constructed using a two-inch tube furnace as the heat source. Ash samples may be collected on a point-to-plane electrostatic precipitator, a cascade impactor, or a cyclone train for particle sizing and characterization. Fly ash particles varying from rock fragments at low burner temperature to solid spheres and cenospheres at high temperatures have been obtained with the laboratory burner. Fundamental studies of the thermal properties of fly ash and fly ash minerals are being conducted by differential thermal analysis (DTA). The DTA traces in general are quite complexas might be expected if the ash is composed of a variety of minerals; however, the DTA traces can be characterized as having an initial exotherm with a peak at 500 to 600/sup 0/ followed by a broad endotherm with a valley in the 1000 to 1500/sup 0/ range. The endotherm has a number of small exotherms superimposed on it. Some generalizations can be made: when coal from the same mine is burned in different combustors, the thermal behavior of the ash is very similar. Ash obtained from different coal sources has different melting behavior. A subtle shift of peaks to higher temperature with larger ash particle size has been observed. 7 references, 6 figures, 7 tables.

  15. Air quality monitoring for dioxins, furans and PCBs in the Swan Hills area, Summer 1997, July 7 to August 1

    SciTech Connect

    1997-12-31

    Summarizes results of air quality monitoring activities carried out in the Swan Hills area of Alberta in summer 1997. At four locations in the area, samples of dioxin, furan, and polychlorinated biphenyls were analyzed and ambient concentrations determined. Results are presented in terms of toxic equivalents of dioxins and furans, total dioxins, total furans, and total polychlorinated biphenyls, normalized by compounds within each homologue group.

  16. Characterization of carbonaceous aerosols during the MINOS campaign in Crete, July-August 2001: a multi-analytical approach

    NASA Astrophysics Data System (ADS)

    Sciare, J.; Cachier, H.; Oikonomou, K.; Ausset, P.; Sarda-Estève, R.; Mihalopoulos, N.

    2003-07-01

    these two methods for determining BC brings here new insights on the origin of carbonaceous aerosols in a complex mixture of different sources. It brings also to our attention that important deviations in BC levels are observed using three widely used EGA techniques and most probably none of the EGA tested here are well adapted to fully characterize this aerosol mixture. Spherical, smooth and silico-aluminated fly-ash observed by Analytical Scanning Electron Microscope (ASEM) confirm the influence of coal combustion on the carbonaceous aerosol load throughout the campaign. A raw calculation based on BC/nss-SO4 mass ratio suggests that biomass burning could be responsible for half of the BC concentration recorded during the MINOS campaign. From the plot of BC as a function of TC, two linear correlations were observed corresponding to 2 times series (before and after 12 August). Such good correlations suggest, from a first look, that both BC and OC have similar origin and atmospheric transport. On the other hand, the plot of BC as a function of TC obtained from the 2-step thermal method applied to DEKATI Low Pressure Cascade Impactor samples does not show a similar correlation and points out a non conservative distribution of this ratio with 2 super micron modes enriched in OC, correlated with sea salt aerosols and probably originating from gas-to-particle conversion.

  17. Characterization of carbonaceous aerosols during the MINOS campaign in Crete, July August 2001: a multi-analytical approach

    NASA Astrophysics Data System (ADS)

    Sciare, J.; Cachier, H.; Oikonomou, K.; Ausset, P.; Sarda-Estève, R.; Mihalopoulos, N.

    2003-10-01

    two methods for determining BC brings here new insights on the origin of carbonaceous aerosols in a complex mixture of different sources. It brings also to our attention that important deviations in BC levels are observed using three widely used EGA's techniques and most probably none of the EGA tested here are well adapted to fully characterize this aerosol mixture. Spherical, smooth and silico-aluminated fly-ash observed by an Analytical Scanning Electron Microscope (ASEM) confirm the influence of coal combustion on the carbonaceous aerosol load throughout the campaign. A rough calculation based on a BC/nss-SO4 mass ratio suggests that biomass burning could be responsible for half of the BC concentration recorded during the MINOS campaign. From the plot of BC as a function of TC, two linear correlations were observed corresponding to 2 times series (before and after 12 August). Such good correlations suggest, from a first look, that both BC and OC have similar origin and atmospheric transport. On the other hand, the plot of BC as a function of TC obtained from the 2-step thermal method applied to DEKATI Low Pressure Cascade Impactor samples does not show a similar correlation and points out a non conservative distribution of this ratio with 2 super micron modes enriched in OC, correlated with sea salt aerosols and probably originating from gas-to-particle conversion.

  18. Results from air-injection and tracer testing in the Upper Tiva Canyon, Bow Ridge Fault, and upper Paintbrush contact alcoves of the Exploratory Studies Facility, August 1994 through July 1996, Yucca Mountain, Nevada

    SciTech Connect

    LeCain, G.D.

    1998-09-01

    The Yucca Mountain Project is a US Department of Energy (DOE) scientific study to evaluate the potential for geologic disposal of high-level radioactive waste in an unsaturated-zone desert environment. The US Geological Survey (USGS) has been conducting geologic and hydrologic studies of the potential repository site for the DOE. These studies are to quantify the geologic and hydrologic characteristics of Yucca Mountain and to conceptualize and model gas and liquid flow at the potential repository site. Single-hole and cross-hole air-injection and tracer testing was conducted in alcoves located in the underground Exploratory Studies Facility (ESF) to quantify the permeability and porosity values of the fractured and unfractured volcanic rocks (tuff). The permeability and porosity of these tuffs control the movement of fluids in Yucca Mountain. Study of these parameters provides an understanding of fluid flow in the unsaturated zone, and the parameters can be used in unsaturated-zone numerical modeling to estimate fluid flux through the mountain. This report presents the results from air-injection and tracer testing conducted in the upper Tiva Canyon alcove (UTCA), the Bow Ridge Fault alcove (BRFA), and the upper Paintbrush contact alcove (UPCA) by the USGS from August 1994 through July 1996. The locations of the alcoves and their relations to the potential repository are shown in a figure.

  19. Coma imaging of comet P/Brorsen-Metcalf at Calar Alto in late July to mid August 1989

    NASA Technical Reports Server (NTRS)

    Boehnhardt, Hermann; Vanysek, Vladimir; Birkle, K.; Hopp, U.

    1992-01-01

    Comet P/Brorsen-Metcalf was observed on 1989/07/28+30 and on 1989/08/04+12(+14) with the 3.5 m telescope and the 0.8 m Schmidt camera at Calar Alto/Spain. The images exhibit a narrow plasma tail pointing into anti-solar direction. On 1989/07/30 a triple tail was found which can be interpreted as tail ray event. The coma isophotes show prominent asymmetries with the nucleus located on the tailward side of the isophote foci and with a slightly higher brightness in the Northern Hemisphere of the coma. A strong curved jet feature was detected in the coma on 1989/07/30. The jet extended at least 30,000 km into the sunward coma hemisphere. The rotation period of about 1.3 days, estimated from the curvature of the coma jet, needs verification by other observations.

  20. Methods for estimating flow-duration curve and low-flow frequency statistics for ungaged locations on small streams in Minnesota

    USGS Publications Warehouse

    Ziegeweid, Jeffrey R.; Lorenz, David L.; Sanocki, Chris A.; Czuba, Christiana R.

    2015-12-24

    Equations developed in this study apply only to stream locations where flows are not substantially affected by regulation, diversion, or urbanization. All equations presented in this study will be incorporated into StreamStats, a web-based geographic information system tool developed by the U.S. Geological Survey. StreamStats allows users to obtain streamflow statistics, basin characteristics, and other information for user-selected locations on streams through an interactive map.

  1. Agreement between the Indian River Community College District Board of Trustees and the Indian River Community College Chapter of the American Association of University Professors, August 1, 1986-July 31, 1987.

    ERIC Educational Resources Information Center

    Indian River Community Coll., FL.

    The collective bargaining agreement between Indian River Community College District Board of Trustees and the Indian River Community College Chapter of the American Association of University Professors (AAUP) covering the period August 1, 1986-July 1, 1987 is presented. Items covered in the agreement include: recognition of AAUP, strikes and…

  2. Agreement between the Board of Trustees of the California State University and the California Faculty Association, Unit 3--Faculty, August 16, 1983-June 30, 1986 and New Contract Language Changes to Agreement, July 1, 1984-June 30, 1986.

    ERIC Educational Resources Information Center

    California State Postsecondary Education Commission, Sacramento.

    The collective bargaining agreement between California State University (CSU) Board of Trustees and the California Faculty Association (CFA) for the period covering August 16, 1983-June 30, 1986 is presented. New contract language changes to the agreement for July 1, 1984-June 30, 1986 are also presented. This American Association of University…

  3. Results from air-injection and tracer testing in the upper Tiva Canyon, Bow Ridge Fault, and upper Paintbrush contact alcoves of the Exploratory Studies Facility, August 1994 through July 1996, Yucca Mountain, Nevada

    USGS Publications Warehouse

    LeCain, Gary D.

    1998-01-01

    Air-injection and tracer testing were conducted in the upper Tiva Canyon, Bow Ridge Fault, and upper Paintbrush contact alcoves in the Exploratory Studies Facility at Yucca Mountain, Nevada, from August 1994 to July 1991. The study was conducted by the U.S. Geological Survey, in cooperation with the U.S. Department of Energy.

  4. Stream measurements locate thermogenic methane fluxes in groundwater discharge in an area of shale-gas development.

    PubMed

    Heilweil, Victor M; Grieve, Paul L; Hynek, Scott A; Brantley, Susan L; Solomon, D Kip; Risser, Dennis W

    2015-04-07

    The environmental impacts of shale-gas development on water resources, including methane migration to shallow groundwater, have been difficult to assess. Monitoring around gas wells is generally limited to domestic water-supply wells, which often are not situated along predominant groundwater flow paths. A new concept is tested here: combining stream hydrocarbon and noble-gas measurements with reach mass-balance modeling to estimate thermogenic methane concentrations and fluxes in groundwater discharging to streams and to constrain methane sources. In the Marcellus Formation shale-gas play of northern Pennsylvania (U.S.A.), we sampled methane in 15 streams as a reconnaissance tool to locate methane-laden groundwater discharge: concentrations up to 69 μg L(-1) were observed, with four streams ≥ 5 μg L(-1). Geochemical analyses of water from one stream with high methane (Sugar Run, Lycoming County) were consistent with Middle Devonian gases. After sampling was completed, we learned of a state regulator investigation of stray-gas migration from a nearby Marcellus Formation gas well. Modeling indicates a groundwater thermogenic methane flux of about 0.5 kg d(-1) discharging into Sugar Run, possibly from this fugitive gas source. Since flow paths often coalesce into gaining streams, stream methane monitoring provides the first watershed-scale method to assess groundwater contamination from shale-gas development.

  5. Hyporheic transport in headwater mountain streams is time-invariant in locations where geologic controls dominate hydrologic forcin

    NASA Astrophysics Data System (ADS)

    Ward, A. S.; Schmadel, N.; Wondzell, S. M.; Harman, C. J.; Gooseff, M. N.; Singha, K.

    2015-12-01

    Transport along riparian and hyporheic flowpaths is generally believed to integrate the responses of streams and aquifers to dynamic hydrological forcing. Although it is generally expected transport along these flow paths is time-variable, such dynamic responses have seldom been demonstrated. Further, we do not understand how hydrological forcing interacts with local geologic setting (i.e., valley and streambed morphology) We conducted a series of four stream solute tracer injections in each of two watersheds with contrasting valley morphology in the H.J. Andrews Experimental Forest, monitoring tracer concentrations in the stream and in a network of shallow wells in each watershed. Time series analyses were used to deconvolve transport along subsurface flowpaths from transport in the stream channel. We found time-invariant hyporheic transport in the narrow, bedrock-constrained valley and near large roughness elements (e.g., steps, logs) in the wider valley bottom despite order of magnitude changes in discharge, suggesting geologic controls dominate hyporheic transport in these locations. In contrast, we observed increases in mean arrival time and temporal variance with decreasing discharge at the riparian-hillslope transition, suggesting hydrological dynamics control transport in these locations. We pose several mechanisms by which dynamic hydrology and geologic setting interact that may explain the observed behavior. We interpret time-invariant transport as an indication that discharge in the surface stream is a poor predictor of exchange along the stream-hyporheic-riparian-hillslope continuum in headwater valleys. As such, models able to account for the transition from geologically-dominated processes in the near-stream subsurface to hydrologically-dominated processes near the hillslope are required to predict transport and fate in valley bottoms of headwater mountain streams.

  6. Results of Toxicity Identification Evaluations (TIE`S) conducted on the A-01 outfall and its contributory waste streams, July 1996--February 1997

    SciTech Connect

    Specht, W.L.

    1997-03-01

    Toxicity tests were conducted at nine locations during the summer of 1996. The results indicated that A-01B, A-01C, A-03, A-04, A-05 and A-01 were toxic to the test species, Ceriodaphnia dubia, while A-01A, A-06, and WE-01 were not toxic. Beginning in August 1996, Toxicity Identification Evaluations (TIE`s) were initiated on all toxic outfalls in order to identify the toxicants responsible for the observed toxicity. A complete TIE was performed on A-01 because it is the regulatory compliance point for all of the combined waste streams that were tested. Only the portions of a TIE that are related to metal and chlorine toxicity were performed on the remaining locations because existing data indicated that metals and chlorine were present in potentially toxic quantities at these locations, and there was no evidence that other toxicants would be expected to be present in toxic amounts. The results of the TIE`s indicate that metals are responsible for most of the toxicity at all of the outfalls that were toxic and that chlorine contributed to the toxicity at two of the outfalls. Specifically, the toxicity at A-01B, A-01C, and A-01 was due to copper; the toxicity at A-03 was due to primarily to copper, although zinc also contributed to the toxicity; the toxicity at A-04 was due primarily to copper, with residual chlorine and zinc contributing to the toxicity; and the toxicity at A-05 was due primarily to copper, with residual chlorine contributing to the toxicity. A-03 was the most toxic outfall, with 100% mortality occurring at concentrations as low as 12.5% effluent. A-03 was found to have concentrations of copper, lead, and zinc that exceeded EPA water quality criteria by approximately two orders of magnitude. The metal concentrations at A-01 and WE-01, which is located approximately 0.5 miles downstream from A-01 were similar. However, A-01 was toxic, while WE-01 was not.

  7. Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2004 to June 30, 2005

    DTIC Science & Technology

    2005-01-01

    8 Figure 4. Stream discharge at Xeriscape garden station (16226200) for July 1 to September 30, 2004 ……………………………………………………………………………… 9 Figure 5...the 3-hour period from 17:00 to 20:00 October 30, 2004 ………………………………………… 10 Figure 6. Stream discharge at Xeriscape garden station (16226200) for...period from 00:00 to 12:00 December 27, 2004 ……………………………………………………………………………… 12 Figure 8. Stream discharge at Xeriscape garden station (16226200) for

  8. Characteristics of African easterly waves associated with tropical cyclogenesis in the Cape Verde Islands region in July-August-September of 2004-2008

    NASA Astrophysics Data System (ADS)

    Arnault, Joël; Roux, Frank

    2011-04-01

    The most common synoptic-scale disturbances related to cyclogenesis over the tropical north Atlantic Ocean are African easterly waves (AEWs) that originated from the northern African continent. However, most of these waves do not evolve in tropical depressions, storms, or hurricanes. The reasons why only few AEWs develop and the necessary conditions for cyclogenetic evolution are still the subject of intense debate. Tropical cyclogenesis occurring near the Cape Verde Islands in the eastern tropical Atlantic is investigated here with five seasons (July-August-September of 2004-2008) of European Centre for Medium-Range Weather Forecasts analyses, Meteosat-9 images, and National Hurricane Center (National Oceanic and Atmospheric Administration, National Centers for Environmental Prediction) "best track" archives. The nine named storms that first reached tropical depression intensity east of 30°W, and two among six which developed between 30 and 40°W, during these five years evolved from intense AEW troughs, associated with low-level cyclonic circulation, weak mid-level anticyclonic Saharan flow to the east, and deep convection near the center of cyclonic vorticity. The cyclogenetic evolution of three AEW troughs, which verified these conditions but failed to develop into named storms, was probably inhibited by unusually dry environment and strong vertical wind shear. The fate of other AEW troughs, which did not satisfy the necessary conditions, is also discussed.

  9. 43 CFR 3813.1 - Minerals reserved by the Act of July 17, 1914, subject to mineral location, entry and patenting.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 43 Public Lands: Interior 2 2012-10-01 2012-10-01 false Minerals reserved by the Act of July 17, 1914, subject to mineral location, entry and patenting. 3813.1 Section 3813.1 Public Lands: Interior... MINERALS MANAGEMENT (3000) LANDS AND MINERALS SUBJECT TO LOCATION Disposal of Reserved Minerals Under...

  10. 43 CFR 3813.1 - Minerals reserved by the Act of July 17, 1914, subject to mineral location, entry and patenting.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 43 Public Lands: Interior 2 2014-10-01 2014-10-01 false Minerals reserved by the Act of July 17, 1914, subject to mineral location, entry and patenting. 3813.1 Section 3813.1 Public Lands: Interior... MINERALS MANAGEMENT (3000) LANDS AND MINERALS SUBJECT TO LOCATION Disposal of Reserved Minerals Under...

  11. 43 CFR 3813.1 - Minerals reserved by the Act of July 17, 1914, subject to mineral location, entry and patenting.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 43 Public Lands: Interior 2 2011-10-01 2011-10-01 false Minerals reserved by the Act of July 17, 1914, subject to mineral location, entry and patenting. 3813.1 Section 3813.1 Public Lands: Interior... MINERALS MANAGEMENT (3000) LANDS AND MINERALS SUBJECT TO LOCATION Disposal of Reserved Minerals Under...

  12. 43 CFR 3813.1 - Minerals reserved by the Act of July 17, 1914, subject to mineral location, entry and patenting.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 43 Public Lands: Interior 2 2013-10-01 2013-10-01 false Minerals reserved by the Act of July 17, 1914, subject to mineral location, entry and patenting. 3813.1 Section 3813.1 Public Lands: Interior... MINERALS MANAGEMENT (3000) LANDS AND MINERALS SUBJECT TO LOCATION Disposal of Reserved Minerals Under...

  13. Water quality and habitat conditions in upper Midwest streams relative to riparian vegetation and soil characteristics, August 1997 : study design, methods, and data

    USGS Publications Warehouse

    Sorenson, S.K.; Porter, S.D.; Akers, K.B.; Harris, M.A.; Kalkhoff, S.J.; Lee, K.E.; Roberts, L.; Terrio, P.J.

    1999-01-01

    Water-chemistry, biological, and habitat data were collected from 70 sites on Midwestern streams during August 1997 as part of an integrated, regional water-quality assessment by the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program. The study area includes the Corn Belt region of southern Minnesota, eastern Iowa, and west-central Illinois, one of the most intensive and productive agricultural regions of the world. The focus of the study was to evaluate the condition of woodedriparian zones and the influence of basin soildrainage characteristics on water quality and biological-community responses. This report includes a description of the study design and site-characterization process, sample-collection and processing methods, laboratory methods, quality-assurance procedures, and summaries of data on nutrients, herbicides and metabolites, stream productivity and respiration, biological communities, habitat conditions, and agriculturalchemical and land-use information.

  14. Water Operations Technical Support Program: Techniques for Evaluating Aquatic Habitats in Rivers, Streams, and Reservoirs. Proceedings of a Workshop Held in Vicksburg, Mississippi on 8-10 August 1989.

    DTIC Science & Technology

    1991-08-01

    Stream capture occurs when the headwater( s ) of one stream erodes through the banks of another and captures that tributary. Drainage density Basins develop ...AND DATES COVERED August 1991 Final report 4. TITLE AND SUBTITLE S . FUNDING NUMBERS Techniques for Evaluating Aquatic Habitats in Rivers, Streams, and...Reservoirs; Proceedings of a Workshop 6. AUTHOR( S ) Larry G. Sanders, Compiler 7. PERFORMING ORGANIZATION NAME( S ) AND ADDRESS(ES) 8. PERFORMING

  15. Selected Streamflow Statistics and Regression Equations for Predicting Statistics at Stream Locations in Monroe County, Pennsylvania

    USGS Publications Warehouse

    Thompson, Ronald E.; Hoffman, Scott A.

    2006-01-01

    A suite of 28 streamflow statistics, ranging from extreme low to high flows, was computed for 17 continuous-record streamflow-gaging stations and predicted for 20 partial-record stations in Monroe County and contiguous counties in north-eastern Pennsylvania. The predicted statistics for the partial-record stations were based on regression analyses relating inter-mittent flow measurements made at the partial-record stations indexed to concurrent daily mean flows at continuous-record stations during base-flow conditions. The same statistics also were predicted for 134 ungaged stream locations in Monroe County on the basis of regression analyses relating the statistics to GIS-determined basin characteristics for the continuous-record station drainage areas. The prediction methodology for developing the regression equations used to estimate statistics was developed for estimating low-flow frequencies. This study and a companion study found that the methodology also has application potential for predicting intermediate- and high-flow statistics. The statistics included mean monthly flows, mean annual flow, 7-day low flows for three recurrence intervals, nine flow durations, mean annual base flow, and annual mean base flows for two recurrence intervals. Low standard errors of prediction and high coefficients of determination (R2) indicated good results in using the regression equations to predict the statistics. Regression equations for the larger flow statistics tended to have lower standard errors of prediction and higher coefficients of determination (R2) than equations for the smaller flow statistics. The report discusses the methodologies used in determining the statistics and the limitations of the statistics and the equations used to predict the statistics. Caution is indicated in using the predicted statistics for small drainage area situations. Study results constitute input needed by water-resource managers in Monroe County for planning purposes and evaluation

  16. EUROGRAM: July-August 2000

    DTIC Science & Technology

    2000-08-01

    Emission of Coherent Gamma-rays as a product of Controlled Release and Manipulation of Nuclear Energy Stored in Long-lived Isomers . Demonstrating the... production of isomer efforts to include analyzing the outputs of all experiments with nuclear production models so as to guide the search for additional...investigators conducted a successful experiment to observe the release of energy stored in the nucleus of Hafnium upon being irradiated with 20KeV photons

  17. Loglines. July-August 2011

    DTIC Science & Technology

    2011-08-01

    southern fried catfish, pepper steak and roast turkey, to name a few. “My favorite food is Cajun, and I was surprised to see jambalaya on the menu, with...service member whose remains are processed for burial at the Air Force Mortuary Affairs for the Fallen Air Force Staff Sgt. Charles Bell , a mortuary

  18. Loglines. July-August 2013

    DTIC Science & Technology

    2013-08-01

    asset for DLA to allow employees who have the background and expertise to deploy to lend their talents to that mission. We have the best training, the...to mature until retail and wholesale accounts adjust to the new demands. In most cases, every part listed in JPO MRAP push packages was also...Operations Deputy Director Paul Hughes said about Carr’s recent help with a leave administration matter. Carr and 18 other human resources specialists

  19. Increases in maximum stream temperatures after slash burning in a small experimental watershed.

    Treesearch

    Al Levno; Jack. Rothacher

    1969-01-01

    The first year after slash was burned on a 237-acre clearcut watershed in the Cascade Range of Oregon, average maximum water temperatures increased 13°, 14°, and 12°F, during June, July, and August. A maximum stream temperature of 75°F. persisted for 3 hours on a day in July.

  20. Estimation of daily mean streamflow for ungaged stream locations in the Delaware River Basin, water years 1960–2010

    USGS Publications Warehouse

    Stuckey, Marla H.

    2016-06-09

    The ability to characterize baseline streamflow conditions, compare them with current conditions, and assess effects of human activities on streamflow is fundamental to water-management programs addressing water allocation, human-health issues, recreation needs, and establishment of ecological flow criteria. The U.S. Geological Survey, through the National Water Census, has developed the Delaware River Basin Streamflow Estimator Tool (DRB-SET) to estimate baseline (minimally altered) and altered (affected by regulation, diversion, mining, or other anthropogenic activities) and altered streamflow at a daily time step for ungaged stream locations in the Delaware River Basin for water years 1960–2010. Daily mean baseline streamflow is estimated by using the QPPQ method to equate streamflow expressed as a percentile from the flow-duration curve (FDC) for a particular day at an ungaged stream location with the percentile from a FDC for the same day at a hydrologically similar gaged location where streamflow is measured. Parameter-based regression equations were developed for 22 exceedance probabilities from the FDC for ungaged stream locations in the Delaware River Basin. Water use data from 2010 is used to adjust the baseline daily mean streamflow generated from the QPPQ method at ungaged stream locations in the Delaware River Basin to reflect current, or altered, conditions. To evaluate the effectiveness of the overall QPPQ method contained within DRB-SET, a comparison of observed and estimated daily mean streamflows was performed for 109 reference streamgages in and near the Delaware River Basin. The Nash-Sutcliffe efficiency (NSE) values were computed as a measure of goodness of fit. The NSE values (using log10 streamflow values) ranged from 0.22 to 0.98 (median of 0.90) for 45 streamgages in the Upper Delaware River Basin and from -0.37 to 0.98 (median of 0.79) for 41 streamgages in the Lower Delaware River Basin.

  1. Notable Increasing Trend in Azole Non-susceptible Candida tropicalis Causing Invasive Candidiasis in China (August 2009 to July 2014): Molecular Epidemiology and Clinical Azole Consumption

    PubMed Central

    Fan, Xin; Xiao, Meng; Liao, Kang; Kudinha, Timothy; Wang, He; Zhang, Li; Hou, Xin; Kong, Fanrong; Xu, Ying-Chun

    2017-01-01

    Objectives: To report the notable increasing trends of C. tropicalis antifungal resistance in the past 5 years, and explore molecular epidemiology, and the relationship between clinical azoles consumption and increased resistance rate. Methods: Between August 2009 and July 2014, 507 non-duplicated C. tropicalis isolates causing invasive candidiasis were collected from 10 hospitals in China. The in vitro antifungal susceptibility of nine common agents was determined by Sensititre YeastOne™ using current available species-specific clinical breakpoint (CBPs) or epidemiological cut-off values (ECVs). A high discriminatory three-locus (ctm1, ctm3, and ctm24) microsatellite scheme was used for typing of all isolates collected. Clinical consumption of fluconazole and voriconazole was obtained and the Defined Daily Dose measurement units were assigned to the data. Results: Overall, 23.1 and 20.7% of isolates were non-susceptible to fluconazole and voriconazole, respectively. And over 5 years, the non-susceptible rate of C. tropicalis isolates to fluconazole and voriconazole continuously increased from 11.2 to 42.7% for fluconazole (P < 0.001), and from 10.4 to 39.1% for voriconazole (P < 0.001). Four genotype clusters were observed to be associated with fluconazole non-susceptible phenotype. However, the increase in azole non-susceptible rate didn't correlate with clinical azole consumption. Conclusions: The rapid emergence of azole resistant C. tropicalis strains in China is worrying, and continuous surveillance is warranted and if the trend persists, empirical therapeutic strategies for C. tropicalis invasive infections should be modified. PMID:28382028

  2. U.S. Department of Energy electric and hybrid vehicle Site Operator Program at Platte River Power Authority. Final report, July 3, 1991--August 31, 1996

    SciTech Connect

    Emmert, R.A.

    1996-12-31

    The Platte River Power Authority (Platte River) is a political subdivision of the state of Colorado, owned by the four municipalities of Fort Collins, Loveland, Longmont and Estes Park, Colorado. Platte River is a non-profit, publicly owned, joint-action agency formed to construct, operate and maintain generating plants, transmission systems and related facilities for the purpose of delivering to the four municipalities electric energy for distribution and resale. Platte River, as a participant in the US Department of Energy (DOE) Site Operator Program, worked to accomplish the Site Operator Program goals and objectives to field test and evaluate electric and electric-hybrid vehicles and electric vehicle systems in a real world application/environment. This report presents results of Platte River`s program (Program) during the five-years Platte River participated in the DOE Site Operator Program. Platte River participated in DOE Site Operator Program from July 3, 1991 through August 31, 1996. During its Program, Platte River conducted vehicle tests and evaluations, and electric vehicle demonstrations in the Front Range region of Northern Colorado. Platte River also investigated electric vehicle infrastructure issues and tested infrastructure components. Platte River`s Program objectives were as follows: evaluate the year round performance, operational costs, reliability, and life cycle costs of electric vehicles in the Front Range region of Northern Colorado; evaluate an electric vehicle`s usability and acceptability as a pool vehicle; test any design improvements or technological improvements on a component level that may be made available to PRPA and which can be retrofit into vehicles; and develop, test and evaluate, and demonstrate components to be used in charging electric vehicles.

  3. Global O3-CO Correlations in a Global Model During July-August: Evaluation with TES Satellite Observations and Sensitivity to Emissions

    NASA Astrophysics Data System (ADS)

    Choi, H.; Liu, H.; Crawford, J. H.; Considine, D. B.; Allen, D. J.; Duncan, B. N.; Rodriguez, J. M.; Strahan, S. E.; Damon, M.; Steenrod, S. D.; Zhang, L.; Liu, X.

    2013-12-01

    We examine global mid-tropospheric (619 hPa) ozone - carbon monoxide (O3-CO) correlations and its sensitivity to emissions during July - August 2005 in the Global Modeling Initiative (GMI) chemistry and transport model driven by the Modern-Era Retrospective Analysis for Research and Application (MERRA) meteorological data set. We evaluate the simulated O3 with climatological O3 profiles from ozonesonde measurements and satellite tropospheric O3 columns. Model O3-CO correlations are 1). positive in the Northern Hemisphere continental outflow regions with large dO3/dCO enhancement ratios, and in the southern African westerly outflow region and Indonesia with small dO3/dCO enhancement ratios; 2). negative over the Asian continent (including the Tibetan Plateau), Middle East, northern and central Africa, and tropical and subtropical deep convective regions. These patterns are consistent with those derived from collocated measurements of O3 and CO from the Tropospheric Emission Spectrometer (TES) on board NASA's Aura satellite, except over the tropical Atlantic and Pacific. Model sensitivity experiments indicate that fossil fuel emissions are responsible for the positive O3-CO correlations in major continental outflow regions and Europe. Biomass burning emissions lead to the positive correlations in the Southern Hemisphere mid-high latitudes. Biogenic emissions make important contributions to the negative O3-CO correlations over the tropical eastern Pacific. Lightning NOx emissions significantly reduce both the positive O3-CO correlations at mid-high latitudes and the negative correlations in the tropics. The corresponding chemical and transport processes will be discussed.

  4. On the main characteristics of synoptic weather conditions associated with thunderstorm activity during the months of July and August in the city of Thessaloniki (Northern Greece)

    NASA Astrophysics Data System (ADS)

    Pissimanis, D. K.; Notaridou, V. A.; Spyrou, C. K.

    2006-01-01

    The evolution of synoptic scale atmospheric circulation at least two days before the occurrence of thunderstorm or shower activity with high precipitation amounts is examined for the months of July and August for the area surrounding the city of Thessaloniki in Northern Greece. In a period of sixteen years (1985 2000), seventeen cases with precipitation amounts greater than 10 mm were found in these two months. The most important factor for the occurrence of the above activities was the approach of cold air, usually of mP origin, into Northern Greece. The advection of cold air was examined at the 700 hPa level. This cold air was advected toward the southern Balkans either from Northwestern Europe, or more directly from higher latitudes. In a few cases cold air that had initially been advected into the Central Mediterranean region finally moved eastward affecting Northern Greece. From these seventeen cases, the first four with the highest precipitation amounts (all exceeding 20 mm) were analysed in detail with the help of weather maps and radiosonde data available for the station at Micra. For these four cases, apart from the detailed analysis of the cold air advection, an attempt was made to investigate whether in the lowest part of the troposphere, the area of Northern Greece and the interior of the Balkan Peninsula to the north, was dominated by warm and humid air in the twenty four hour period that preceded each thunderstorm outbreak. For this purpose the evolution of the spatial distribution of the equivalent potential temperature (Θe) at the 850 hPa level was determined for the two or three preceding days. Finally, the presence of mesoscale disturbances, that could be considered responsible for triggering the ascending motions that are necessary for the initiation of the thunderstorm development, was investigated for each case.

  5. Atmospheric Trace Species at Grand Canyon and Canyonlands National Parks: Preliminary Field Measurements From the Western States Visibility Assessment Program, July/August 2001

    NASA Astrophysics Data System (ADS)

    Martin, R. S.; Popp, C. J.; Wingenter, O.; Huang, S.

    2001-12-01

    In the western United States there is a growing concern about the increasing impairment of visibility in and around National Parks, National Monuments, wilderness areas, and other scenic attractions. Quantifying trace species associated with energy production and consumption is critical in understanding regional visibility impairment and modeling how present and future energy use patterns may influence visibility. The Western States Visibility Assessment Program (WSVAP) of the New Mexico Institute of Mining and Technology (NMT) was established to provide visibility assessment and associated trace species data to regional, state, and local policy makers, industry representatives, and other interested parties. The program's origins are found in prior DOE-sponsored research implemented by the Center for Applied Research in connection with the Grand Canyon Visibility Commission. As a part of this program, a three-week field campaign was initiated in July and August of 2001 to monitor a suite of atmospheric traces species at the Hance site within Grand Canyon National Park in northcentral Arizona and at the Island in the Sky District within Canyonlands National Park in southeast Utah. Gaseous trace species monitored at each site included oxides of nitrogen, carbon monoxide, sulfur dioxide, non-methane hydrocarbons, and low molecular weight aldehydes, ketones and organic acids. Additionally, total suspended particulate and PM2.5 samples were also collected, both of which are to be subsequently analyzed for speciated composition. Corresponding data simultaneously collected at or near the sampling sites by Park Service and other personnel included visibility quantification, ozone, meteorological parameters, separate speciated PM2.5 data (IMPROVE), and acidic species deposition (CASNET). The presentation will include initial analysis of the collected data and a brief discussion of future measurements, as well as planned modeling exercises.

  6. Studies on the immunochemical techniques for detection of selected fungal and dinoflagellate toxins. Annual progress report No. 2, 1 August 1982-31 July 1983

    SciTech Connect

    Chu, F.S.

    1983-08-15

    During the second year (August 1, 1982 to July 31, 1983), conditions for improving antibody production against T-2 toxin were studied. T-2 HS-BSA which has 10-15 moles of T-2 per mole of BSA was found to be a better immunogen than T-2-HG-BSA. Antibody titers as high as 11,000-14,000 were obtained from rabbits after repeated booster injections. High specific radioactive T-2, DAS, DOVE were prepared. With combination of the high specific radioactive T-2 toxin and high titer antibody, as little as 25 pg of T-2 toxin can be detected by the RIA in each assay. An indirect ELISA which permits detection of 0.2-1 ppb of T-2 toxin in urine, serum and milk was also established. Antibody against T-2 toxin was used to localize T-2 toxin in different tissues and organs of mice by an immunohistochemical technique. A collaborative study with Dr. Hunter revealed that antibody titers of T-2 toxin increased drastically in an immunomodulation system in mice. Titers as high as 50,000 were obtained in mice 10 days after immunization with T-2-HS-IgG (goat). Antibodies against diacetoxyscirpenol (DAS), and deoxyverrucarol (DOVE) were obtained from rabbits after immunizing with DAS-hemisuccinate (HS)-BSA, DAS-hemiglutarate (HG)-BSA and DOVE-HS-BSA. DAS-HG-BSA was found to be a better immunogen than DAS-HS-BSA for the production of antibody against DAS. The antibody for DAS is most specific for DAS. However, DOVE antidbodies were found to be less specific. Radioimmunoassays for both DAS and DOVE were established, and the detection limits were found.

  7. Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2000 to June 30, 2001

    USGS Publications Warehouse

    Presley, Todd K.

    2001-01-01

    The State of Hawaii Department of Transportation Stormwater Monitoring Program was implemented on January 1, 2001. The program includes the collection of rainfall, streamflow, and water-quality data at selected sites in the Halawa Stream drainage basin. Rainfall and streamflow data were collected from July 1, 2000 to June 30, 2001. Few storms during the year met criteria for antecedent dry conditions or provided enough runoff to sample. The storm of June 5, 2001 was sufficiently large to cause runoff. On June 5, 2001, grab samples were collected at five sites along North Halawa and Halawa Streams. The five samples were later analyzed for nutrients, trace metals, oil and grease, total petroleum hydrocarbons, fecal coliform, biological and chemical oxygen demands, total suspended solids, and total dissolved solids.

  8. Flow velocity, water temperature, and conductivity at selected locations in Shark River Slough, Everglades National Park, Florida; July 1999 - July 2003

    USGS Publications Warehouse

    Schaffranek, Raymond W.; Riscassi, Ami L.

    2005-01-01

    Flow-velocity, water-temperature, and conductivity data were collected at five locations in Shark River Slough, Everglades National Park (ENP), Florida, from 1999 to 2003. The data were collected as part of the U.S. Geological Survey Priority Ecosystems Science Initiative in support of the Comprehensive Everglades Restoration Plan. This report contains digital files and graphical plots of the processed, quality-checked, and edited data. Information pertinent to the locations and monitoring strategy also is presented.

  9. The Utility of Acoustic Travel Times in Locating the North Wall of the Gulf Stream

    DTIC Science & Technology

    1991-10-01

    relationship AR = - AT * (1 km / .005 seconds). Spiesberger (1989) determined that each 5-millisecond change in acoustic travel time closely approximates a...Gulf Stream. References Spiesberger , J.L. (1989). Remote Sensing of Western Boundary Currents Using Acoustic Tomography. J. Acoust. Soc. Am. 86(l), 346...Street Stennis Space Center, MS 39529 Seattle, WA 98107 21 16. Dr. John Spiesberger Woods Hole Oceanographic Inst. Woods Hole, MA 02543 17. Mr. Robert

  10. Archive of Chirp Seismic Reflection Data Collected During USGS Cruises 01SCC01 and 01SCC02, Timbalier Bay and Offshore East Timbalier Island, Louisiana, June 30 - July 9 and August 1 - 12, 2001

    USGS Publications Warehouse

    Calderon, Karynna; Dadisman, Shawn V.; Flocks, James G.; Wiese, Dana S.; Kindinger, Jack G.

    2003-01-01

    In June, July, and August of 2001, the U.S. Geological Survey (USGS), in cooperation with the University of New Orleans, the U.S. Army Corps of Engineers, and the Louisiana Department of Natural Resources, conducted a shallow geophysical and sediment core survey of Timbalier Bay and the Gulf of Mexico offshore East Timbalier Island, Louisiana. This report serves as an archive of unprocessed digital seismic reflection data, trackline navigation files, trackline navigation maps, observers' logbooks, Geographic Information Systems (GIS) information, and formal Federal Geographic Data Committee (FGDC) metadata. In addition, a gained digital Graphics Interchange Format (GIF) image of each seismic profile is provided. Please see Kulp and others (2002), Flocks and others (2003), and Kulp and others (in prep.) for further information about the sediment cores collected and the geophysical results. For convenience, a list of acronyms and abbreviations frequently used in this report is also included. This Digital Versatile Disc (DVD) document is readable on any computing platform that has standard DVD driver software installed. Documentation on this DVD was produced using Hyper Text Markup Language (HTML) utilized by the World Wide Web (WWW) and allows the user to access the information using a web browser (i.e. Netscape, Internet Explorer). To access the information contained on these discs, open the file 'index.htm' located at the top level of each disc using a web browser. This report also contains WWW links to USGS collaborators and other agencies. These links are only accessible if access to the internet is available while viewing these DVDs. The archived chirp seismic reflection data are in standard Society of Exploration Geophysicists (SEG) SEG-Y format (Barry et al., 1975) and may be downloaded for processing with public domain software such as Seismic Unix (SU), currently located at http://www.cwp.mines.edu/cwpcodes/index.html. Examples of SU processing scripts are

  11. Summary of the Adult Basic Education Institute for Teachers and Teacher-Trainers of Urban Adult Populations. Part II. July 26, 1971-August 31, 1972.

    ERIC Educational Resources Information Center

    Howard Univ., Washington, DC. School of Education.

    Contrary to the statement in the title, Part 2 of the summary of Institute proceedings is concerned with the period from August 7, 1971, to August 31, 1972. It reports the results of an opinionnaire taken the last day Institute participants were assembled at Howard, and the uses to which the participants put their Institute experience after they…

  12. Effects of the H-3 Highway Stormwater Runoff on the Water Quality of Halawa Stream, Oahu, Hawaii, November 1998 to August 2004

    USGS Publications Warehouse

    Wolff, Reuben H.; Wong, Michael F.

    2008-01-01

    Since November 1998, water-quality data have been collected from the H-3 Highway Storm Drain C, which collects runoff from a 4-mi-long viaduct, and from Halawa Stream on Oahu, Hawaii. From January 2001 to August 2004, data were collected from the storm drain and four stream sites in the Halawa Stream drainage basin as part of the State of Hawaii Department of Transportation Storm Water Monitoring Program. Data from the stormwater monitoring program have been published in annual reports. This report uses these water-quality data to explore how the highway storm-drain runoff affects Halawa Stream and the factors that might be controlling the water quality in the drainage basin. In general, concentrations of nutrients, total dissolved solids, and total suspended solids were lower in highway runoff from Storm Drain C than at stream sites upstream and downstream of Storm Drain C. The opposite trend was observed for most trace metals, which generally occurred in higher concentrations in the highway runoff from Storm Drain C than in the samples collected from Halawa Stream. The absolute contribution from Storm Drain C highway runoff, in terms of total storm loads, was much smaller than at stations upstream and downstream, whereas the constituent yields (the relative contribution per unit drainage basin area) at Storm Drain C were comparable to or higher than storm yields at stations upstream and downstream. Most constituent concentrations and loads in stormwater runoff increased in a downstream direction. The timing of the storm sampling is an important factor controlling constituent concentrations observed in stormwater runoff samples. Automated point samplers were used to collect grab samples during the period of increasing discharge of the storm throughout the stormflow peak and during the period of decreasing discharge of the storm, whereas manually collected grab samples were generally collected during the later stages near the end of the storm. Grab samples were

  13. Physical, chemical, and biological characteristics of selected headwater streams along the Allegheny Front, Blair County, Pennsylvania, July 2011–September 2013

    USGS Publications Warehouse

    Low, Dennis J.; Brightbill, Robin A.; Eggleston, Heather L.; Chaplin, Jeffrey J.

    2016-02-29

    Biotic health was characterized at 10 of 12 stream sites; the two sites excluded were established late in the study period (May 2013) for refinement of water quality in the headwaters of Poplar Run and the location of Marcellus Formation gas wells. On the basis of the Maryland Index of Biotic Integrity (MdIBI) for fish assemblages, 8 of 10 streams can be considered in fair health. Tipton Run had the highest MdIBI score (3.75) and the greatest number of native species. South Poplar Run had the lowest MdIBI score (1.75); pollution tolerant blacknose dace was dominant. On the basis of the Pennsylvania Department of Environmental Protection macroinvertebrate index of biotic integrity, 9 of 10 streams were characterized as attaining, with scores as high as 88.9 at Tipton Run. Only Sugar Run was characterized as impaired, with a score of 40.4.

  14. Runoff characteristics of California streams

    USGS Publications Warehouse

    Rantz, S.E.

    1972-01-01

    California streams exhibit a wide range of runoff characteristics that are related to the climatologic, topographic, and geologic characteristics of the basins they drain. The annual volume of runoff of a stream, expressed in inches, may be large or small, and daily discharge rates may be highly variable or relatively steady. The bulk of the annual runoff may be storm runoff, or snowmelt runoff, or a combination of both. The streamflow may be ephemeral, intermittent, or perennial; if perennial, base flow may be well sustained or poorly sustained. In this report the various runoff characteristics are identified by numerical index values. They are shown to be related generally to mean annual precipitation, altitude, latitude, and location with respect to the 11 geomorphic provinces in the California Region. With respect to mean annual precipitation on the watershed, streamflow is generally (1) ephemeral if the mean annual precipitation is less than 10 inches, (2) intermittent if the mean annual precipitation is between 10 and 40 inches, and (3) perennial if the mean annual precipitation is more than 40 inches. Departures from those generalizations are associated with (a) the areal variation of such geologic factors as the infiltration and storage capacities of the rocks underlying the watersheds, and (b) the areal variation of evapotranspiration loss as influenced by varying conditions of climate, soil, vegetal cover, and geologic structure. Latitude and altitude determine the proportion of the winter precipitation that will be stored for subsequent runoff in the late spring and summer. In general, if a watershed has at least 30 percent of its area above the normal altitude of the snowline on April 1, it will have significant snowmelt runoff. Snowmelt runoff in California is said to be significant if at least 30 percent of the annual runoff occurs during the 4 months, April through July. Storm runoff is said to be predominant if at least 65 percent of the annual

  15. Global O3-CO correlations in a chemistry and transport model during July-August: evaluation with TES satellite observations and sensitivity to input meteorological data and emissions

    NASA Astrophysics Data System (ADS)

    Choi, Hyun-Deok; Liu, Hongyu; Crawford, James H.; Considine, David B.; Allen, Dale J.; Duncan, Bryan N.; Horowitz, Larry W.; Rodriguez, Jose M.; Strahan, Susan E.; Zhang, Lin; Liu, Xiong; Damon, Megan R.; Steenrod, Stephen D.

    2017-07-01

    We examine the capability of the Global Modeling Initiative (GMI) chemistry and transport model to reproduce global mid-tropospheric (618 hPa) ozone-carbon monoxide (O3-CO) correlations determined by the measurements from the Tropospheric Emission Spectrometer (TES) aboard NASA's Aura satellite during boreal summer (July-August). The model is driven by three meteorological data sets (finite-volume General Circulation Model (fvGCM) with sea surface temperature for 1995, Goddard Earth Observing System Data Assimilation System Version 4 (GEOS-4 DAS) for 2005, and Modern-Era Retrospective Analysis for Research and Applications (MERRA) for 2005), allowing us to examine the sensitivity of model O3-CO correlations to input meteorological data. Model simulations of radionuclide tracers (222Rn, 210Pb, and 7Be) are used to illustrate the differences in transport-related processes among the meteorological data sets. Simulated O3 values are evaluated with climatological profiles from ozonesonde measurements and satellite tropospheric O3 columns. Despite the fact that the three simulations show significantly different global and regional distributions of O3 and CO concentrations, they show similar patterns of O3-CO correlations on a global scale. All model simulations sampled along the TES orbit track capture the observed positive O3-CO correlations in the Northern Hemisphere midlatitude continental outflow and the Southern Hemisphere subtropics. While all simulations show strong negative correlations over the Tibetan Plateau, northern Africa, the subtropical eastern North Pacific, and the Caribbean, TES O3 and CO concentrations at 618 hPa only show weak negative correlations over much narrower areas (i.e., the Tibetan Plateau and northern Africa). Discrepancies in regional O3-CO correlation patterns in the three simulations may be attributed to differences in convective transport, stratospheric influence, and subsidence, among other processes. To understand how various

  16. Bathymetric and velocimetric surveys at highway bridges crossing the Missouri River in and into Missouri during summer flooding, July-August 2011

    USGS Publications Warehouse

    Huizinga, Richard J.

    2012-01-01

    Bathymetric and velocimetric surveys were conducted by the U.S. Geological Survey, in cooperation with the Kansas and Missouri Departments of Transportation, in the vicinity of 36 bridges at 27 highway crossings of the Missouri River between Brownville, Nebraska and St. Louis, Missouri, from July 13 through August 3, 2011, during a summer flood. A multibeam echo sounder mapping system was used to obtain channel-bed elevations for river reaches ranging from 1,350 to 1,860 feet and extending across the active channel of the Missouri River. These bathymetric scans provide a "snapshot" of the channel conditions at the time of the surveys and provide characteristics of scour holes that may be useful in the development of predictive guidelines or equations for scour holes. These data also may be used by the Kansas and Missouri Departments of Transportation to assess the bridges for stability and integrity issues with respect to bridge scour during floods. Bathymetric data were collected around every pier that was in water, except those at the edge of water, in extremely shallow water, or surrounded by debris rafts. Scour holes were present at most piers for which bathymetry could be obtained, except at piers on channel banks, those near or embedded in lateral or longitudinal spur dikes, and those on exposed bedrock outcrops. Scour holes observed at the surveyed bridges were examined with respect to depth and shape. Although exposure of parts of foundational support elements was observed at several piers, at most sites the exposure likely can be considered minimal compared to the overall substructure that remains buried in bed material; however, there were several notable exceptions where the bed material thickness between the bottom of the scour hole and bedrock was less than 6 feet. Such substantial exposure of usually buried substructural elements may warrant special observation in future flood events. Previous bathymetric surveys had been done at several of the sites

  17. Recovery of fine coal from waste streams using advanced column flotation. Annual report, September 1, 1990--August 31, 1991

    SciTech Connect

    Groppo, J.G.

    1991-12-31

    The advanced flotation techniques, namely column flotation, have shown potential in obtaining a low ash, low pyritic sulfur fine size clean coal. The overall objective of this program is to evaluate applicability of an advanced flotation technique, `Ken-Flote` column to recover clean coal with minimum mineral matter content at greater than 90 percent combustible recovery from two Illinois preparation plant waste streams. Column flotations tests were conducted on the flotation feed obtained from the Kerr-McGee Galatia and Ziegler No. 26 plants using three different bubble-generating devices: sparger, gas saver and foam jet. Each of these devices was tested with three different frothers and various column-operating variable to provide maximum combustible recovery, minimum product ash and maximum pyrite rejection. For the Galatia slurry, the column provided a clean coal containing 5 percent ash, 0.48 percent pyritic sulfur at combustible recovery averaging 90 percent. In other words, about 90 percent ash and about 75 percent pyritic sulfur rejection were attained for the Galatia slurry. Pilot plant studies on this slurry basically obtained results similar to the laboratory studies. For the Ziegler No. 26, slurry column flotation provided a clean coal containing about 5 percent ash, 0.44 percent pyritic sulfur at more than 90 percent combustible recovery. The ash and pyrite sulfur rejection was about 85 percent and 65 percent, respectively.

  18. Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2003 to June 30, 2004

    USGS Publications Warehouse

    Young, Stacie T.M.; Ball, Marcael T.J.

    2004-01-01

    Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. This program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream. For this program, rainfall data were collected at two sites, continuous streamflow data at three sites, and water-quality data at five sites, which include the three streamflow sites. This report summarizes rainfall, streamflow, and water-quality data collected between July 1, 2003 and June 30, 2004. A total of 30 samples was collected over four storms during July 1, 2003 to June 30, 2004. In general, an attempt was made to collect grab samples nearly simultaneously at all five sites, and flow-weighted time-composite samples were collected at the three sites equipped with automatic samplers. However, all four storms were partially sampled because either not all stations were sampled or only grab samples were collected. Samples were analyzed for total suspended solids, total dissolved solids, nutrients, chemical oxygen demand, and selected trace metals (cadmium, copper, lead, and zinc). Grab samples were additionally analyzed for oil and grease, total petroleum hydrocarbons, fecal coliform, and biological oxygen demand. Quality-assurance/quality-control samples, collected during storms and during routine maintenance, were also collected to verify analytical procedures and check the effectiveness of equipment-cleaning procedures.

  19. Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2005 to June 30, 2006

    USGS Publications Warehouse

    Presley, Todd K.; Jamison, Marcael T.J.; Young-Smith, Stacie T. M.

    2006-01-01

    Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. This program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream. For this program, rainfall data were collected at two stations, continuous discharge data at one station, continuous streamflow data at two stations, and water-quality data at five stations, which include the continuous discharge and streamflow stations. This report summarizes rainfall, discharge, streamflow, and water-quality data collected between July 1, 2005 and June 30, 2006. A total of 23 samples was collected over five storms during July 1, 2005 to June 30, 2006. The goal was to collect grab samples nearly simultaneously at all five stations, and flow-weighted time-composite samples at the three stations equipped with automatic samplers; however, all five storms were partially sampled owing to lack of flow at the time of sampling at some sites, or because some samples collected by the automatic sampler did not represent water from the storm. Samples were analyzed for total suspended solids, total dissolved solids, nutrients, chemical oxygen demand, and selected trace metals (cadmium, chromium, copper, lead, nickel, and zinc). Additionally, grab samples were analyzed for oil and grease, total petroleum hydrocarbons, fecal coliform, and biological oxygen demand. Quality-assurance/quality-control samples were also collected during storms and during routine maintenance to verify analytical procedures and check the effectiveness of equipment-cleaning procedures.

  20. Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2004 to June 30, 2005

    USGS Publications Warehouse

    Young, Stacie T.M.; Ball, Marcael T.J.

    2005-01-01

    Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. This program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream. For this program, rainfall data were collected at two stations, continuous streamflow data at two stations, and water-quality data at five stations, which include the two continuous streamflow stations. This report summarizes rainfall, streamflow, and water-quality data collected between July 1, 2004 and June 30, 2005. A total of 15 samples was collected over three storms during July 1, 2004 to June 30, 2005. In general, an attempt was made to collect grab samples nearly simultaneously at all five stations and flow-weighted time-composite samples at the three stations equipped with automatic samplers. However, all three storms were partially sampled because either not all stations were sampled or not all composite samples were collected. Samples were analyzed for total suspended solids, total dissolved solids, nutrients, chemical oxygen demand, and selected trace metals (cadmium, chromium, copper, lead, nickel, and zinc). Chromium and nickel were added to the analysis starting October 1, 2004. Grab samples were additionally analyzed for oil and grease, total petroleum hydrocarbons, fecal coliform, and biological oxygen demand. Quality-assurance/quality-control samples were also collected during storms and during routine maintenance to verify analytical procedures and check the effectiveness of equipment-cleaning procedures.

  1. Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2006 to June 30, 2007

    USGS Publications Warehouse

    Young, Stacie T.M.; Jamison, Marcael T.J.

    2007-01-01

    Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. This program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream. For this program, rainfall data were collected at two stations, continuous streamflow data at three stations, and water-quality data at five stations, which include the two continuous streamflow stations. This report summarizes rainfall, streamflow, and water-quality data collected between July 1, 2006 and June 30, 2007. A total of 13 samples was collected over two storms during July 1, 2006 to June 30, 2007. The goal was to collect grab samples nearly simultaneously at all five stations and flow-weighted time-composite samples at the three stations equipped with automatic samplers. Samples were analyzed for total suspended solids, total dissolved solids, nutrients, chemical oxygen demand, and selected trace metals (cadmium, chromium, copper, lead, nickel, and zinc). Additionally, grab samples were analyzed for oil and grease, total petroleum hydrocarbons, fecal coliform, and biological oxygen demand. Quality-assurance/quality-control samples were also collected during storms and during routine maintenance to verify analytical procedures and check the effectiveness of equipment-cleaning procedures.

  2. Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2001 to June 30, 2002

    USGS Publications Warehouse

    Presley, Todd K.

    2002-01-01

    The State of Hawaii Department of Transportation Stormwater Monitoring Program was implemented on January 1, 2001. The program includes the collection of rainfall, streamflow, and water-quality data at selected sites in the Halawa Stream drainage basin. Rainfall data were collected at two sites, and streamflow data were collected at 3 sites for the year July 1, 2001 to June 30, 2002. Water-quality data were collected at five sites, which include the three streamflow sites. Six storms were sampled during the year July 1, 2001 to June 30, 2002, for a total of 44 samples. For each storm event, grab samples were collected nearly simultaneously at all five sites, and flow-weighted, time-composite samples were collected at the three sites equipped with automatic samplers. Samples were analyzed for nutrients, trace metals, oil and grease, total petroleum hydrocarbons, fecal coliform, biological oxygen demand, chemical oxygen demand, total suspended solids, and total dissolved solids. Quality assurance samples were also collected to verify analytical procedures and insure proper cleaning of equipment.

  3. Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2002 to June 30, 2003

    USGS Publications Warehouse

    Young, Stacie T.M.; Ball, Marcael T.J.

    2003-01-01

    Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. This program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream. For this program, rainfall data was collected at two sites, continuous streamflow data at three sites, and water-quality data at five sites, which include the three streamflow sites. This report summarizes rainfall, streamflow, and water-quality data collected between July 1, 2002 to June 30, 2003. A total of 28 samples were collected over five storms during July 1, 2002 to June 30, 2003. For two of the five storms, five grab samples and three flow-weighted timecomposite samples were collected. Grab samples were collected nearly simultaneously at all five sites, and flow-weighted timecomposite samples were collected at the three sites equipped with automatic samplers. The other three storms were partially sampled, where only flow-weighted time-composite samples were collected and/or not all stations were sampled. Samples were analyzed for total suspended solids, total dissolved solids, nutrients, chemical oxygen demand, and selected trace metals (cadmium, copper, lead, and zinc). Grab samples were additionally analyzed for oil and grease, total petroleum hydrocarbons, fecal coliform, and biological oxygen demand. Quality-assurance/qualitycontrol samples, collected during storms and during routine maintenance, were also collected to verify analytical procedures and insure proper cleaning of equipment.

  4. Stream water quality in coal mined areas of the lower Cheat River Basin, West Virginia and Pennsylvania, during low-flow conditions, July 1997

    USGS Publications Warehouse

    Williams, Donald R.; Clark, Mary E.; Brown, Juliane B.

    1999-01-01

    designing treatment facilities for several additional AMD sites that adversely affect the Cheat River and its tributaries. To obtain the baseline water-quality information necessary to evaluate instream treatment and alternative methods for remediating AMD and its effects, the U.S. Geological Survey (USGS), in cooperation with the WVDEP, collected stream water samples at 111 sites throughout the Lower Cheat River Basin during low-flow conditions from July 16-18, 1997. The data also will provide information on stream water quality in areas affected by AMD and thus would point to priority areas of focus, such as the sources of the AMD. This report presents the results of analyses of the samples collected in July 1997 and describes a process for ranking of stream water-quality degradation as a guide to water-resource managers considering AMD remediation activities.

  5. User Education in the Online Age II. IATUL International Seminar Proceedings, (2nd, Delft, The Netherlands, July 30-August 2, 1984). Vol. 17.

    ERIC Educational Resources Information Center

    Fjallbrant, Nancy, Ed.

    1985-01-01

    Papers presented at an August 1984 international seminar on online user education include "Library Policies and Strategies in The Netherlands" (Chris J. van Wijk, The Netherlands); "Promotion and Marketing of Library Services" (Nancy Fjallbrant, Sweden); "Library Promotion by Computer" (Ian Malley, United Kingdom); "Library User Education and…

  6. Solar-geophysical data number 493, September 1985. Part 1: (Prompt reports). Data for August 1985, July 1985 and late data

    NASA Technical Reports Server (NTRS)

    Coffey, H. E. (Editor)

    1985-01-01

    Topics covered include: detailed index for 1985; data for August 1985--(IUWDS alert periods (Advanced and Worldwide), solar activity indices, solar flares, solar radio emission, Stanford mean solar magnetic field); (solar active regions, sudden ionospheric disturbances, solar radio spectral observations, cosmic ray measurements by neutron monitor, geomagnetic indices, radio propagation indices); and late data--calcium plage data.

  7. User Education in the Online Age II. IATUL International Seminar Proceedings, (2nd, Delft, The Netherlands, July 30-August 2, 1984). Vol. 17.

    ERIC Educational Resources Information Center

    Fjallbrant, Nancy, Ed.

    1985-01-01

    Papers presented at an August 1984 international seminar on online user education include "Library Policies and Strategies in The Netherlands" (Chris J. van Wijk, The Netherlands); "Promotion and Marketing of Library Services" (Nancy Fjallbrant, Sweden); "Library Promotion by Computer" (Ian Malley, United Kingdom); "Library User Education and…

  8. Studying Classroom Teaching as a Medium for Professional Development: Proceedings of a U.S.-Japan Workshop (9th, Tokyo/Makuhari, Japan, July 31-August 6, 2000).

    ERIC Educational Resources Information Center

    Bass, Hyman, Ed.; Usiskin, Zalman P., Ed.; Burrill, Gail, Ed.

    The Ninth International Congress on Mathematics Education (ICME-9) held in Makuhari, Japan, in August 2000 provided a unique opportunity for the Mathematical Sciences Education Board and the U.S. National Commission on Mathematics Instruction. Together with educators from the Japanese mathematical community, they hosted a workshop on teacher…

  9. Quantity and quality of ground-water discharge to the South Platte River, Denver to Fort Lupton, Colorado, August 1992 through July 1993

    USGS Publications Warehouse

    McMahon, P.B.; Lull, K.J.; Dennehy, K.F.; Collins, J.A.

    1995-01-01

    Water-quality studies conducted by the Metro Wastewater Reclamation District have indicated that during low flow in segments of the South Platte River between Denver and Fort Lupton, concentrations of dissolved oxygen are less than minimum concen- trations set by the State of Colorado. Low dissolved-oxygen concentrations are observed in two reaches of the river-they are about 3.3 to 6.4 miles and 17 to 25 miles downstream from the Metro Waste- water Reclamation District effluent outfalls. Concentrations of dissolved oxygen recover between these two reaches. Studies conducted by the U.S. Geological Survey have indicated that ground-water discharge to the river may contribute to these low dissolved-oxygen concentrations. As a result, an assessment was made of the quantity and quality of ground-water discharge to the South Platte River from Denver to Fort Lupton. Measurements of surface- water and ground-water discharge and collections of surface water and ground water for water-quality analyses were made from August 1992 through January 1993 and in May and July 1993. The quantity of ground-water discharge to the South Platte River was determined indirectly by mass balance of surface-water inflows and outflows and directly by instantaneous measurements of ground-water discharge across the sediment/water interface in the river channel. The quality of surface water and ground water was determined by sampling and analysis of water from the river and monitoring wells screened in the alluvial aquifer adjacent to the river and by sampling and analysis of water from piezometers screened in sediments underlying the river channel. The ground-water flow system was subdivided into a large-area and a small-area flow system. The precise boundaries of the two flow systems are not known. However, the large-area flow system is considered to incorporate all alluvial sediments in hydrologic connection with the South Platte River. The small- area flow system is considered to incorporate

  10. Feasibility Study for Bioethanol Co-Location with a Coal Fired Power Plant: 29 November 2001--28 July 2002

    SciTech Connect

    Not Available

    2002-12-01

    This study looks at the feasibility of co-locating 30, 50, and 70 million gallon per year bioethanol facilities with coal fired power plants in Indiana and Nebraska. Corn stover is the feedstock for ethanol production in both cases.

  11. A characterization and evaluation of coal liquefaction process streams. Quarterly technical progress report, July 1, 1996--September 30, 1996

    SciTech Connect

    Robbins, G.A.; Brandes, S.D.; Winschel, R.A.

    1997-08-01

    CONSOL completed characterization of 64 samples from five run conditions of HTI Run ALC-1 (227-94), in which raw and cleaned (oil-agglomerated at low pH) Black Thunder Mine subbituminous coal was fed and processed using only dispersed catalysts in the liquefaction reactors. Extraction of THF-soluble resid from the pressure-filter cakes was more complete when agglomerates were fed, leaving only 5% or less THF solubles in the extracted cakes. When raw coal was fed, the extracted cakes contained 9-34% THF solubles. HTI also observed improved filtration during the periods that agglomerates were fed. Improved operability, if verified by additional work, could be an economically significant benefit of coal cleaning by oil agglomeration at low pH. An apparently higher Mo addition rate (see fourth bullet) may have contributed to the benefits of using oil-agglomerated coal. Other stream sample characteristics changed when oil-agglomerated coal was fed in Conditions 2-4, relative to when uncleaned coal was fed in Conditions 1 and 5. The ash content of the 0-6 bottoms samples was lower when oil-agglomerates were fed. The THF-soluble 524{degrees}C+ resid concentration in the feed slurry doubled when agglomerated coal was fed. Three factors may have influenced these characteristics. Higher coal conversion would have produced more resid. More efficient toluene-extraction of the filter cake would have recycled more resid. Removal of distillate as product to offset oil fed as part of the agglomerated coal would preferentially recycle the heaviest components.

  12. Influence of trophic position and spatial location on polychlorinated biphenyl (PCB) bioaccumulation in a stream food web

    Treesearch

    David M. Walters; Ken M. Fritz; Brent R. Johnson; James M. Lazorchak; Frank H. McCormick

    2008-01-01

    Bioaccumulation of persistent organic contaminants (OCs) is well documented in lentic and marine ecosystems, but few studies have addressed OC bioaccumulation in streams. The limited research in streams is surprising given the magnitude and extent of OC pollution. Approximately 9% of wadeable stream length in the U.S. is underlain by contaminated sediments including...

  13. Estimating Locations of Perennial Streams in Idaho Using a Generalized Least-Squares Regression Model of 7-Day, 2-Year Low Flows

    USGS Publications Warehouse

    Wood, Molly S.; Rea, Alan; Skinner, Kenneth D.; Hortness, Jon E.

    2009-01-01

    Many State and Federal agencies use information regarding the locations of streams having intermittent or perennial flow when making management and regulatory decisions. For example, the application of some Idaho water quality standards depends on whether streams are intermittent. Idaho Administrative Code defines an intermittent stream as one having a 7-day, 2-year low flow (7Q2) less than 0.1 ft3/s. However, there is a general recognition that the cartographic representation of perennial/intermittent status of streams on U.S. Geological Survey (USGS) topographic maps is not as accurate or consistent as desirable from one map to another, which makes broad management and regulatory assessments difficult and inconsistent. To help resolve this problem, the USGS has developed a methodology for predicting the locations of perennial streams based on regional generalized least-squares (GLS) regression equations for Idaho streams for the 7Q2 low-flow statistic. Using these regression equations, the 7Q2 streamflow may be estimated for naturally flowing streams in most areas in Idaho. The use of these equations in conjunction with a geographic information system (GIS) technique known as weighted flow accumulation allows for an automated and continuous estimation of 7Q2 streamflow at all points along stream reaches. The USGS has developed a GIS-based map of the locations of streams in Idaho with perennial flow based on a 7Q2 of 0.1 ft3/s and a transition zone of plus or minus 1 standard error. Idaho State cooperators plan to use this information to make regulatory and water-quality management decisions. Originally, 7Q2 equations were developed for eight regions of similar hydrologic characteristics in the study area, using long-term data from 234 streamflow-gaging stations. Equations in five of the regions were revised based on spatial patterns observed in the initial perennial streams map and unrealistic behavior of the equations in extrapolation. The standard errors of

  14. Surface-water-quality assessment of the lower Kansas River basin, Kansas and Nebraska; dissolved oxygen and Escherichia coli bacteria in streams during low flow, July 1988 through July 1989

    USGS Publications Warehouse

    Pope, L.M.

    1995-01-01

    The 15,300-square-mile lower Kansas River Basin in Kansas and Nebraska was investigated, as one of the pilot study units of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program, to address a variety of water-quality issues. This report describes sanitary quality of streams as defined by concentrations of dissolved oxygen (DO) and densities of a fecal-indicator bacterium, Escherichia coli (E. coli). Sixty-one surface-water sampling sites were chosen for this investigation. Synoptic surveys were conducted in July 1988, November 1988, March 1989, and May 1989 to define the concentrations and diel and seasonal variability in concentrations of DO. Synoptic surveys were conducted in July 1988 and July 1989 to define densities of E. coli. Ancillary data included measurements of specific conductance, pH, water temperature. barometric pressure, and concentrations of nutrients, total organic carbon, chlorophyll, and suspended sediment. Surveys were conducted during stable-flow, dry-weather conditions. During the July 1988 synoptic survey for DO, emphasis was placed on the measurement of DO under maximum stress (high water temperature, low streamflow, and predawn conditions). Of 31 sites sampled just before dawn, 5 had DO concentrations less than the 5.0-milligrams-perliter, l-day minimum warmwater criterion for early life stages as established by the U.S. Environmental Protection Agency (USEPA), and 4 of these 5 sites had concentrations less than the 3.0-milligrams-per-liter criterion for all other life stages. For all four synoptic surveys, a total of 392 DO determinations were made, and 9 (2.3 percent) were less than water-quality criteria. Concentrations of DO less than water-quality criteria in the study unit are localized occurrences and do not reflect regional differences in DO. The most severe DO deficiencies are the result of discharges from wastewater-treatment plants into small tributary streams with inadequate assimilation capacity. Algal

  15. Effects of steelhead density on growth of Coho salmon in a small coastal California stream

    Treesearch

    Bret C. Harvey; Rodney J. Nakamoto

    1996-01-01

    Abstract - Weight change in age-0 coho salmon, Oncorhynchus kisutch at about natural density was negatively related to the density of juvenile steelhead (anadromous rainbow trout O. mykiss) in a 6-week experiment conducted in July-August 1993 in the north and south forks of Caspar Creek, California. The experiment used 12 enclosed stream sections, each containing a...

  16. National Transport Code Collaboration (NTCC) PTRANSP, Final Report to the US Department of Energy for the Period August 1, 2007 Through July 31, 2010

    SciTech Connect

    Lao, Lang L.; St John, Holger; Staebler, Gary M.; Snyder, Phil B.

    2010-08-20

    This report describes the work done under U.S. Department of Energy grant number DE-FG02-07ER54935 for the period ending July 31, 2010. The goal of this project was to provide predictive transport analysis to the PTRANSP code. Our contribution to this effort consisted of three parts: (a) a predictive solver suitable for use with highly non-linear transport models and installation of the turbulent confinement models GLF23 and TGLF, (b) an interface of this solver with the PTRANSP code, and (c) initial development of an EPED1 edge pedestal model interface with PTRANSP. PTRANSP has been installed locally on this cluster by importing a complete PTRANSP build environment that always contains the proper version of the libraries and other object files that PTRANSP requires. The GCNMP package and its interface code have been added to the SVN repository at PPPL.

  17. Variations in trace metal and halogen ratios in magmatic gases through an eruptive cycle of the Pu'u O'o vent, Kilauea, Hawaii: July-August 1985

    SciTech Connect

    Miller, T.L.; Zoller, W.H. ); Crowe, B.M.; Finnegan, D.L. )

    1990-08-10

    Particle and gas samples were obtained before and after eruptive episode 35 in July and August 1985 at the fuming Pu'u O'o vent, Kilauea volcano, Hawaii. The sampling system employed consisted of a particle filter followed by four {sup 7}LiOH treated filters to collect acidic gases. The filters were analyzed using instrumental neutron activation analysis (INAA). The results indicate that Br/Cl and Re/Cl ratios do not fluctuate through an eruption cycle but the F/Cl, F/Br and metal/Cl ratios (In and Cd) do change through the cycle. An inverse relationship between F/Cl and metal/Cl was observed. The changes are probably due to influxes of relatively undegassed magma during the repose period releasing fume with lower F/Cl, F/BR and higher metal/Cl ratios. As the magma in the Pu'u O'o conduit gradually degasses either before or several days after an eruptive episode, F/Cl and F/Br ratios increase and the metal/Cl ratios decrease. One sample collected on July 24, two days before eruptive episode 35, did not follow this general trend. This can be explained by a gas pulse from a deeper, less degassed portion of magma making its way to the top of the conduit.

  18. Swine-origin influenza A (H3N2) virus infection in two children--Indiana and Pennsylvania, July-August 2011.

    PubMed

    2011-09-09

    Influenza A viruses are endemic in many animal species, including humans, swine, and wild birds, and sporadic cases of transmission of influenza A viruses between humans and animals do occur, including human infections with avian-origin influenza A viruses (i.e., H5N1 and H7N7) and swine-origin influenza A viruses (i.e., H1N1, H1N2, and H3N2). Genetic analysis can distinguish animal origin influenza viruses from the seasonal human influenza viruses that circulate widely and cause annual epidemics. This report describes two cases of febrile respiratory illness caused by swine-origin influenza A (H3N2) viruses identified on August 19 and August 26, 2011, and the current investigations. No epidemiologic link between the two cases has been identified, and although investigations are ongoing, no additional confirmed human infections with this virus have been detected. These viruses are similar to eight other swine-origin influenza A (H3N2) viruses identified from previous human infections over the past 2 years, but are unique in that one of the eight gene segments (matrix [M] gene) is from the 2009 influenza A (H1N1) virus. The acquisition of the M gene in these two swine-origin influenza A (H3N2) viruses indicates that they are "reassortants" because they contain genes of the swine-origin influenza A (H3N2) virus circulating in North American pigs since 1998 and the 2009 influenza A (H1N1) virus that might have been transmitted to pigs from humans during the 2009 H1N1 pandemic. However, reassortments of the 2009 influenza A (H1N1) virus with other swine influenza A viruses have been reported previously in swine. Clinicians who suspect influenza virus infection in humans with recent exposure to swine should obtain a nasopharyngeal swab from the patient for timely diagnosis at a state public health laboratory and consider empiric neuraminidase inhibitor antiviral treatment to quickly limit potential human transmission.

  19. Pipeline corridors through wetlands - impacts on plant communities: Bayou Grand Cane, De Soto Parish, Louisiana. Topical report, August 1991--July 1993

    SciTech Connect

    Shem, L.M.; Zimmerman, R.E.; Hayes, D.; Van Dyke, G.D. |

    1994-12-01

    The goal of the Gas Research Institute Wetland Corridors Program is to document impacts of existing pipeline on the wetlands they traverse. To accomplish this goal, 12 existing wetland crossings were surveyed. These sites varied in elapsed time since pipeline construction, wetland type, pipeline installation techniques, and night of-way (ROW) management practices. This report presents the results of a survey conducted over the period of August 12-13, 1991, at the Bayou Grand Cane crossing in De Soto Parish, Louisiana, where a pipeline constructed three years prior to the survey crosses the bayou through mature bottomland hardwoods. The sit was not seeded or fertilized after construction activities. At the time of sampling, a dense herb stratum (composed of mostly native species) covered the 20-m-wide ROW, except within drainage channels. As a result of the creation of the ROW, new habitat was created, plant diversity increased, and forest habitat became fragmented. The ROW must be maintained at an early stage of succession to allow access to the pipeline however, impacts to the wetland were minimized by decreasing the width of the ROW to 20 m and recreating the drainage channels across the ROW. The canopy trees on the ROW`s edge shaded part of the ROW, which helped to minimize the effects of the ROW.

  20. Littoral Drifter for Sensing Properties of Shallow Waters and Sediments: Riverine Drifter Field Trials July 10, August 13 and September 10, 2008

    DTIC Science & Technology

    2008-10-08

    307 334 361 389 416 439 Y D a t a -1.0 -1.3 -1.6 -1.9 -2.2 -2.5 -2.8 -3.1 -3.4 -3.7 -4.0 -4.3 -4.6 -4.9 -5.2 -5.5 -5.8 -6.1 -6.4 -6.7 50 100 150...0.8 1.0 1.2 1.4 1.6 1.8 2.0 13 August 2008 Hull Gut 08 Total Speed, m/s Distance along track, m 2 41 99 175 265 354 439 531 619 703 Y D a t a...13:12:00 Y D at a 0 2 4 6 Time vs Depth, m 10 September 2008 West of Little Brewster 05 - Depth 5s ave., m X Data 12:52:00 12:57:00 13:02

  1. Lab to Large Scale Transition for Non-Vacuum Thin Film CIGS Solar Cells: Phase II--Annual Technical Report, August 2003-July 2004

    SciTech Connect

    Kapur, V. K.; Bansal, A.; Asenio, O. I.; Shigeoka, M. K.; Le, P.; Gergen, B.; Rasmussen, M.; Zuniga, R.

    2005-01-01

    The purpose of this subcontract, as part of the R&D Partners category is to: (i) identify the challenges that International Solar Electric Technology, Inc. (ISET) may face in the process of making a ''Lab to Large Scale'' transition for its ink-based non-vacuum process in production of thin-film CIGS solar cells and modules, and (ii) develop workable solutions for these challenges such that they can readily be implemented in a large-scale processing line for CIGS modules. The primary objective of this research is to streamline ISET's ink-based non-vacuum process for fabricating efficient CIGS modules to lower the cost of module production << $1.0/watt. To achieve this objective, ISET has focused R&D efforts on investigating topics that directly impact the ultimate cost of processing CIGS modules. These topics of concern include (i) module output, and therefore, the solar cell and the module efficiency, (ii) overall process yield which requires developing a process that offers a very high degree of repeatability for every manufacturing step, and (iii) a process approach that maximizes the utilization of the materials used. In accordance with the above, this report will cover activity during Phase II in the investigation of methods for low-cost manufacturing and process development. Specific tasks cover four broad areas: (1) solar cell efficiency, (2) process control, (3) module integration, and (4) enhanced material utilization by reduction of waste stream.

  2. Polymer-based separations: Synthesis and application of polymers for ionic and molecular recognition. Annual performance report, August 1, 1993--July 31, 1994

    SciTech Connect

    Alexandratos, S.D.

    1994-04-01

    During this period, focus was on design and synthesis of bifunctional polymers for complexing metal ions from aqueous solutions; this could provide a means for separating radioactive and toxic metal ions from contaminated waste water as well as valuable metals from dilute ore processing streams. The synthesis of bifunctional polymers required a new preparative technique; bifunctional interpenetrating polymer networks (IPN) was an important part of the studies. In the preparation, a pre-formed crosslinked polymer is contacted with a solution of monomers, and a second network was polymerized within the first. Imidazole ligands were used. A new resin, prepared with a macrocyclic sorbed within polystyrene beads modified with sulfonic acid ligands, extracted Cu(II) 10--100-fold. Maximum metal ion complexation rates depend on a balance between chemical interactions and physical parameters (matrix porosity, rigidity). A novel ion exchange resin (Diphonix{trademark}) has been produced which displays both ionic selectivity (diphosphonic acid ligands) and rapid complexation rates (sulfonic acid ligands).

  3. Aqueous geochemical data from the analysis of stream-water samples collected in June and July 2006-Taylor Mountains 1:250,00-scale quadrangle, Alaska

    USGS Publications Warehouse

    Wang, Bronwen; Mueller, Seth; Stetson, Sarah; Bailey, Elizabeth; Lee, Greg

    2011-01-01

    We report on the chemical analysis of water samples collected from the Taylor Mountains 1:250,000-scale quadrangle, Alaska. Parameters for which data are reported include pH, conductivity, water temperature, major cation and anion concentrations, trace-element concentrations, and dissolved organic-carbon concentrations. Samples were collected as part of a multiyear U.S. Geological Survey project entitled ?Geologic and Mineral Deposit Data for Alaskan Economic Development.? Data presented here are from samples collected in June and July 2006. The data are being released at this time with minimal interpretation. This is the third release of aqueous geochemical data from this project; aqueous geochemical data from samples collected in 2004 and 2005 were published previously. The data in this report augment but do not duplicate or supersede the previous data release. Site selection was based on a regional sampling strategy that focused on first- and second-order drainages. Water sample site selection was based on landscape parameters that included physiography, wetland extent, lithological changes, and a cursory field review of mineralogy from pan concentrates. Stream water in the Taylor Mountains quadrangle is dominated by bicarbonate (HCO3-), although in a few samples more than 50 percent of the anionic charge can be attributed to sulfate (SO42-). The major-cation chemistry ranges from Ca2+/Mg2+ dominated to a mix of Ca2+/Mg2+/Na++K+. Generally, good agreement was found between the major cations and anions in the duplicate samples. Many trace elements in these samples were at or near the analytical method detection limit, but good agreement was found between duplicate samples for elements with detectable concentrations. All field blank major-ion and trace-element concentrations were below detection.

  4. Aqueous Geochemical Data From the Analysis of Stream-Water Samples Collected in June and July 2005--Taylor Mountains 1:250,000 Scale Quadrangle, Alaska

    USGS Publications Warehouse

    Wang, Bronwen; Mueller, Seth; Stetson, Sarah; Bailey, Elizabeth; Lee, Greg

    2006-01-01

    We report on the chemical analysis of water samples collected from the Taylor Mountains 1:250,000-scale quadrangle. Parameters for which data are reported include pH, conductivity, water temperature, major cation and anion concentrations, trace-element concentrations, and dissolved organic-carbon concentrations. Samples were collected as part of a multiyear U.S. Geological Survey project 'Geologic and Mineral Deposit Data for Alaskan Economic Development.' Data presented here are from samples collected in June and July of 2005. The data are being released at this time with minimal interpretation. This is the second release of aqueous geochemical data from this project; 2004 aqueous geochemical data were published previously (Wang and others, 2006). The data in this report augment but do not duplicate or supersede the previous data release. Site selection was based on a regional sampling strategy that focused on first- and second-order drainages. Water sample site selection was based on landscape parameters that included physiography, wetland extent, lithological changes, and a cursory field review of mineralogy from pan concentrates. Stream water in the Taylor Mountians quadrangle is dominated by bicarbonate (HCO3-), though in a few samples more than 50 percent of the anionic charge can be attributed to sulfate (SO42-). The major-cation chemistry ranges from Ca2+/Mg2+ dominated to a mix of Ca2+/Mg2+/Na++K+. In general, good agreement was found between the major cations and anions in the duplicate samples. Many trace elements in these samples were at or near the analytical method detection limit, but good agreement was found between duplicate samples for elements with detectable concentrations. With the exception of a total mercury concentration of 0.33 ng/L detected in a field blank, field blank major-ion and trace-elements concentrations were below detection.

  5. Physical and chemical data on sediments deposited in the Missouri and the Mississippi River flood plains during the July through August 1993 flood

    USGS Publications Warehouse

    Schalk, Gregg K.; Holmes, Jr., Robert R.; Johnson, Gary P.

    1998-01-01

    Because sediments deposited by the 1993 floods on the Missouri and Mississippi rivers were thought to contain elevated concentrations of nutrients and trace elements, sediment deposits were sampled at 25 floodplain locations. The samples were analyzed for particle size, water content, volatile solids, nutrients, carbon, selected trace elements, pesticides, and semivolatile organic compounds. Preflood soil samples were analyzed for particle size only. Procedures for selecting sites, techniques developed for sampling, laboratory and analytical methods, and quality assurance methods also are described.

  6. Diel changes in water chemistry in an arsenic-rich stream and treatment-pond system

    USGS Publications Warehouse

    Gammons, C.H.; Grant, T.M.; Nimick, D.A.; Parker, S.R.; DeGrandpre, M.D.

    2007-01-01

    Arsenic concentrations are elevated in surface waters of the Warm Springs Ponds Operable Unit (WSPOU), located at the head of the upper Clark Fork River Superfund site, Montana, USA. Arsenic is derived from historical deposition of smelter emissions (Mill and Willow Creeks) and historical mining and milling wastes (Silver Bow Creek). Although long-term monitoring has characterized the general seasonal and flow-related trends in As concentrations in these streams and the pond system used to treat Silver Bow Creek water, little is known about solubility controls and sorption processes that influence diel cycles in As concentrations. Diel (24-h) sampling was conducted in July 2004 and August 2005 at the outlet of the treatment ponds, at two locations along a nearby reconstructed stream channel that diverts tributary water around the ponds, and at Silver Bow Creek 2??km below the ponds. Dissolved As concentration increased up to 51% during the day at most of the stream sites, whereas little or no diel change was displayed at the treatment-pond outlet. The strong cycle in streams is explained by pH- and temperature-dependent sorption of As onto hydrous metal oxides or biofilms on the streambed. Concentrations of dissolved Ca2+ and HCO3- at the stream sites showed a diel temporal pattern opposite to that of As, and geochemical modeling supports the hypothesis that the concentrations of Ca2+ and HCO3- were controlled by precipitation of calcite during the warm afternoon hours when pH rose above 9.0. Nightly increases in dissolved Mn and Fe(II) concentrations were out of phase with concentrations of other divalent cations and are more likely explained by redox phenomena. ?? 2007 Elsevier B.V. All rights reserved.

  7. Nine-year study of the occurrence of culturable viruses in source water for two drinking water treatment plants and the influent and effluent of a Wastewater Treatment Plant in Milwaukee, Wisconsin (August 1994 through July 2003).

    PubMed

    Sedmak, Gerald; Bina, David; Macdonald, Jeffrey; Couillard, Lon

    2005-02-01

    Reoviruses, enteroviruses, and adenoviruses were quantified by culture for various ambient waters in the Milwaukee area. From August 1994 through July 2003, the influent and effluent of a local wastewater treatment plant (WWTP) were tested monthly by a modified U.S. Environmental Protection Agency Information Collection Rule (ICR) organic flocculation cell culture procedure for the detection of culturable viruses. Modification of the ICR procedure included using Caco-2, RD, and HEp-2 cells in addition to BGM cells. Lake Michigan source water for two local drinking water treatment plants (DWTPs) was also tested monthly for culturable viruses by passing 200 liters of source water through a filter and culturing a concentrate representing 100 liters of source water. Reoviruses, enteroviruses, and adenoviruses were detected frequently (105 of 107 samples) and, at times, in high concentration in WWTP influent but were detected less frequently (32 of 107 samples) in plant effluent and at much lower concentrations. Eighteen of 204 samples (8.8%) of source waters for the two DWTPs were positive for virus and exclusively positive for reoviruses at relatively low titers. Both enteroviruses and reoviruses were detected in WWTP influent, most frequently during the second half of the year.

  8. Nine-Year Study of the Occurrence of Culturable Viruses in Source Water for Two Drinking Water Treatment Plants and the Influent and Effluent of a Wastewater Treatment Plant in Milwaukee, Wisconsin (August 1994 through July 2003)

    PubMed Central

    Sedmak, Gerald; Bina, David; MacDonald, Jeffrey; Couillard, Lon

    2005-01-01

    Reoviruses, enteroviruses, and adenoviruses were quantified by culture for various ambient waters in the Milwaukee area. From August 1994 through July 2003, the influent and effluent of a local wastewater treatment plant (WWTP) were tested monthly by a modified U.S. Environmental Protection Agency Information Collection Rule (ICR) organic flocculation cell culture procedure for the detection of culturable viruses. Modification of the ICR procedure included using Caco-2, RD, and HEp-2 cells in addition to BGM cells. Lake Michigan source water for two local drinking water treatment plants (DWTPs) was also tested monthly for culturable viruses by passing 200 liters of source water through a filter and culturing a concentrate representing 100 liters of source water. Reoviruses, enteroviruses, and adenoviruses were detected frequently (105 of 107 samples) and, at times, in high concentration in WWTP influent but were detected less frequently (32 of 107 samples) in plant effluent and at much lower concentrations. Eighteen of 204 samples (8.8%) of source waters for the two DWTPs were positive for virus and exclusively positive for reoviruses at relatively low titers. Both enteroviruses and reoviruses were detected in WWTP influent, most frequently during the second half of the year. PMID:15691964

  9. Gravity Waves and Convection in Colorado during July 1983.

    NASA Astrophysics Data System (ADS)

    Einaudi, F.; Clark, W. L.; Green, J. L.; Vanzandt, T. E.; Fua, D.

    1987-06-01

    In order to gain insight into the complex dynamics of a convective system interacting with a gravity wave train, we have carried out an experiment in northeast Colorado during July and August, 1983, utilizing data from several program areas in NOAA. Pressure data from the PROFS mesonetwork of microbarograph stations were combined with velocity profiles from the Wave Propagation Laboratory UHF wind profiler (ST) radar at Stapleton Airport in Denver and convective cell location data from the NWS Limon weather radar. Several events were clearly visible in the microbarograph data, from which four (called Events A, B, C and D) in late July were selected for further study. These events differed from each other in fundamental ways.In each event the waves represent oscillations of a substantial depth of the troposphere and seem to appear and disappear together with the convective cells. In Events A and B the waves have a critical level and are probably unstable modes generated by wind shear in the jet stream, from which they extract energy. We suggest that the convective cells cause the selection of some modes over others in a system that is initially dynamically unstable. In Event A the wave appears to be locked together with the convective cells, which move at the same velocity as the phase velocity of the wave. The wave and the cells seem to grow and evolve synergetically. In Event B the wave and convective cells commence at about the same time, but the cell velocities are quite different from the wave phase velocity. The cell velocities vary substantially over the time of the event and appear to be controlled by the local winds.In the Events C and D, the waves move faster than the maximum wind in the jet and at least twice as fast as the convective cells. It is suggested that these are nonsingular neutral modes whose excitation depends on a number of mechanisms, such as vertical convective motions and acceleration in the jet flow.

  10. Methods for estimating selected low-flow frequency statistics and mean annual flow for ungaged locations on streams in North Georgia

    USGS Publications Warehouse

    Gotvald, Anthony J.

    2017-01-13

    The U.S. Geological Survey, in cooperation with the Georgia Department of Natural Resources, Environmental Protection Division, developed regional regression equations for estimating selected low-flow frequency and mean annual flow statistics for ungaged streams in north Georgia that are not substantially affected by regulation, diversions, or urbanization. Selected low-flow frequency statistics and basin characteristics for 56 streamgage locations within north Georgia and 75 miles beyond the State’s borders in Alabama, Tennessee, North Carolina, and South Carolina were combined to form the final dataset used in the regional regression analysis. Because some of the streamgages in the study recorded zero flow, the final regression equations were developed using weighted left-censored regression analysis to analyze the flow data in an unbiased manner, with weights based on the number of years of record. The set of equations includes the annual minimum 1- and 7-day average streamflow with the 10-year recurrence interval (referred to as 1Q10 and 7Q10), monthly 7Q10, and mean annual flow. The final regional regression equations are functions of drainage area, mean annual precipitation, and relief ratio for the selected low-flow frequency statistics and drainage area and mean annual precipitation for mean annual flow. The average standard error of estimate was 13.7 percent for the mean annual flow regression equation and ranged from 26.1 to 91.6 percent for the selected low-flow frequency equations.The equations, which are based on data from streams with little to no flow alterations, can be used to provide estimates of the natural flows for selected ungaged stream locations in the area of Georgia north of the Fall Line. The regression equations are not to be used to estimate flows for streams that have been altered by the effects of major dams, surface-water withdrawals, groundwater withdrawals (pumping wells), diversions, or wastewater discharges. The regression

  11. Field based analysis of sediment entrainment in two high gradient streams located in Alpine and Andine environments

    NASA Astrophysics Data System (ADS)

    Mao, Luca; Uyttendaele, Geertrui Paula; Iroumé, Andrés; Lenzi, Mario Aristide

    2008-01-01

    This paper presents an analysis of critical thresholds for bedload transport based on field measurements conducted in two small, high gradient streams: the Rio Cordon (Italian Alps) and the Tres Arroyos (Chilean Andes). The threshold of incipient motion was identified by using marked particles displacement and both flood and flow competence approaches. The findings are expressed in terms of Shields parameter, dimensionless discharge, and specific stream power, and are used to identify the effects of relative grain size, relative depth, and bedform resistance. Overall, particle entrainment tends to be size selective, rather than exhibiting equal mobility, and the high values of dimensionless critical shear stress observed at both study sites confirm the additional roughness effects of step-pool morphologies that are very effective in reducing the bed shear stress and causing an apparent increase in critical shear stress.

  12. Effects of land use and sample location on nitrate-stream flow hysteresis descriptors during storm events

    USGS Publications Warehouse

    Feinson, Lawrence S.; Gibs, Jacob; Imbrigiotta, Thomas E.; Garrett, Jessica D.

    2016-01-01

    The U.S. Geological Survey's New Jersey and Iowa Water Science Centers deployed ultraviolet-visible spectrophotometric sensors at water-quality monitoring sites on the Passaic and Pompton Rivers at Two Bridges, New Jersey, on Toms River at Toms River, New Jersey, and on the North Raccoon River near Jefferson, Iowa to continuously measure in-stream nitrate plus nitrite as nitrogen (NO3 + NO2) concentrations in conjunction with continuous stream flow measurements. Statistical analysis of NO3 + NO2 vs. stream discharge during storm events found statistically significant links between land use types and sampling site with the normalized area and rotational direction of NO3 + NO2-stream discharge (N-Q) hysteresis patterns. Statistically significant relations were also found between the normalized area of a hysteresis pattern and several flow parameters as well as the normalized area adjusted for rotational direction and minimum NO3 + NO2 concentrations. The mean normalized hysteresis area for forested land use was smaller than that of urban and agricultural land uses. The hysteresis rotational direction of the agricultural land use was opposite of that of the urban and undeveloped land uses. An r2 of 0.81 for the relation between the minimum normalized NO3 + NO2 concentration during a storm vs. the normalized NO3 + NO2 concentration at peak flow suggested that dilution was the dominant process controlling NO3 + NO2 concentrations over the course of most storm events.

  13. Military Review. July-August 2011

    DTIC Science & Technology

    2011-08-01

    audience. Examples of IO activities include key leader engagements, the dissemination of products such as handbills and flyers, conversations and...consumer is exposed to product advertisements and that con­ sumer’s inclination to sample a new product . The very same principle applies to how we...directive guidance should also be given to those individuals in your organiza­ tion charged with developing print products , radio and television

  14. EIA new releases, July--August, 1995

    SciTech Connect

    1995-10-02

    This publication identifies energy related publications of the Energy Information Administration of the US Department of Energy. The topics and articles in this issue include data on residential energy use available on diskettes and Internet, natural gas price predictions, coal deliveries to electric utilities, growth in the US uranium industry, microfiche products, features and press releases, EIA`s electronic publishing system, new reports, machine-readable files, how to order EIA publications and energy data information contacts.

  15. Science & Technology Review July/August 2005

    SciTech Connect

    Aufderheide, M B

    2005-06-14

    This journal contains the following articles (1) The Grand Challenge of Thermonuclear Ignition--Commentary by Edward I. Moses; (2) Orchestrating the World's Most Powerful Laser--The computer control system for the National Ignition Facility will soon have about 1.4-million lines of code running on more than 750 computers; (3) A Randon Walk through Time and Space--Albert einstein's 1905 papers on Brownian motion, random fluctuations, and statistical mechanics are fundamental to many Livermore research projects; (4) The Search for Methane in Earth's Mantle--Scientists are discovering that Earth's mantle may have untapped reserves of methane; and (5) Testing the Physics of Nuclear Isomers--Results from a tri-laboratory project contradict claims of accelerated release of energy from the nuclear isomer hafnium-178.

  16. Science& Technology Review July/August 2003

    SciTech Connect

    McMahon, D H

    2003-07-01

    This month's issue has the following articles: (1) Calling All Nuclear Scientists--Commentary by Tomas Diaz de la Rubia; (2) An Inside Attack on Cancer--Customizing the diagnosis and treatment of cancer, for individual cancers and individual patients, is the goal of a Livermore research initiative; (3) Cells Respond Uniquely to Low-Dose Ionizing Radiation--Mammalian cells and tissues exposed to low-level radiation respond by switching on hundreds of genes specialized in repairing damaged chromosomes, membranes, and proteins and in countering cellular stress. (4) A New Generation of Munitions--Warhead designers are developing low collateral damage munitions that only deliver their destructive force to the intended target; and (5) Whatever the Waste, New Facility Takes It On--A new decontamination and waste treatment facility makes it easier for Livermore to manage a variety of wastes effectively, practically, and responsibly.

  17. Operation HUSKY July-August, 1943

    DTIC Science & Technology

    1943-08-01

    FREDERICK FUNSTAN on the West, the XAP FLORENCE NIGHTINGALE in the center,’ and the APA BIDDLE on the East, respectively of the 180th, 179th, and 157th...8217 SECTION II 1 PC 3 SC SECTION III 2 PC 1 SC CENT: LEONARD WOOD 1 PC 1 AM FLORENCE NIGHTINGALE 1 PC 1 AM STANTON 1 PC 1 SC .1 AM THURSTON 1 PC 1 AM 𔃽

  18. Energy technology review, July--August 1991

    SciTech Connect

    Johnson, K.C.

    1991-01-01

    This issue of Energy Technology Review'' gives the annual review of the programs at Lawrence Livermore National Laboratory. This State of the Laboratory issue includes discussions of all major programs: Defense Systems; Laser Research; Magnetic Fusion Energy; Energy and Earth Sciences; Environmental Technology Program; Biomedical and Environmental Science; Engineering; Physics; Chemistry and Materials Science; Computations; and Administrative and Institutional Services. An index is also given of the 1991 achievements with contact names and telephone number.

  19. Education Matters, July-August 2010

    ERIC Educational Resources Information Center

    Beckner, Gary, Ed.

    2010-01-01

    "Education Matters" is the monthly newsletter of the Association of American Educators (AAE), an organization dedicated to advancing the American teaching profession through personal growth, professional development, teacher advocacy and protection. This issue of the newsletter includes: (1) Differentiated Instruction: Responding to each student's…

  20. Education Matters, July-August 2009

    ERIC Educational Resources Information Center

    Beckner, Gary, Ed.

    2009-01-01

    "Education Matters" is the monthly newsletter of the Association of American Educators (AAE), an organization dedicated to advancing the American teaching profession through personal growth, professional development, teacher advocacy and protection. This issue of the newsletter includes: (1) Does Universal Preschool Improve Learning?…

  1. Education Matters, July-August 2010

    ERIC Educational Resources Information Center

    Beckner, Gary, Ed.

    2010-01-01

    "Education Matters" is the monthly newsletter of the Association of American Educators (AAE), an organization dedicated to advancing the American teaching profession through personal growth, professional development, teacher advocacy and protection. This issue of the newsletter includes: (1) Differentiated Instruction: Responding to each student's…

  2. Science & Technology Review July/August 2008

    SciTech Connect

    Bearinger, J P

    2008-05-27

    This months issue has the following articles: (1) Science Translated for the Greater Good--Commentary by Steven D. Liedle; (2) The New Face of Industrial Partnerships--An entrepreneurial spirit is blossoming at Lawrence Livermore; (3) Monitoring a Nuclear Weapon from the Inside--Livermore researchers are developing tiny sensors to warn of detrimental chemical and physical changes inside nuclear warheads; (4) Simulating the Biomolecular Structure of Nanometer-Size Particles--Grand Challenge simulations reveal the size and structure of nanolipoprotein particles used to study membrane proteins; and (5) Antineutrino Detectors Improve Reactor Safeguards--Antineutrino detectors track the consumption and production of fissile materials inside nuclear reactors.

  3. Flood of August 1950 in the Waimea area, Kauai, Hawaii

    USGS Publications Warehouse

    Chun, R.K.

    1952-01-01

    This report presents detailed records of stages and discharges at four gaging stations in the basin during the flood period August 15-18 in the Waimea River basin, a summary of flood discharges at gaging stations on the principal streams on the island of Kauai, a description of the physical features of the drainage basin, a description of the two types of storms that prevail on the Hawaiian Islands, and a section on the meteorology of the storm of August 15-18. Figure 46 is a map of the island of Kauai, which shows the location of the gaging stations referred to in this report, the location of .rain gages in the area where rainfall was the greatest, and lines of equal rainfall for the period August 14-19, 1950.

  4. Estimation of baseline daily mean streamflows for ungaged locations on Pennsylvania streams, water years 1960-2008

    USGS Publications Warehouse

    Stuckey, Marla H.; Koerkle, Edward H.; Ulrich, James E.

    2012-01-01

    BaSE uses the map correlation method and flow-duration exceedance probability regression equations to estimate baseline daily mean streamflow for an ungaged location. The output from BaSE is a Microsoft Excel® report file that summarizes the reference streamgage and ungaged location information, including basin characteristics, percent difference in basin characteristics between the two locations, any warning associated with the basin characteristics, mean and median streamflow for the ungaged location, and a daily hydrograph of streamflow for water years 1960–2008 for the ungaged location. The daily mean streamflow for the ungaged location can be exported as a text file to be used as input into other statistical software packages. BaSE estimates daily mean streamflow for baseline conditions only, and any alterations to streamflow from regulation, large water use, or substantial mining are not reflected in the estimated streamflow.

  5. Influence of trophic position and spatial location on polychlorinated biphenyl (PCB) bioaccumulation in a stream food web.

    PubMed

    Walters, David M; Fritz, Ken M; Johnson, Brent R; Lazorchak, James M; McCormick, Frank H

    2008-04-01

    We tested the ability of delta15N-derived trophic position (TP) to predict polychlorinated biphenyl (PCB) concentrations in a historically contaminated stream (Twelvemile Creek, SC). We analyzed sediment, four types of organic matter, 27 macroinvertebrate taxa, and 25 fish species from six sites spanning 25 stream km. SigmaPCBs were high across sites (mean fish = 2505 ng g(-1) wet), with little spatial variation in concentrations within a trophic level. SigmaPCBs (wet weight) were significantly positively correlated with TP (r2 = 0.56) and lipids (r2 = 0.44), and concentrations increased 1-2 orders of magnitude among trophic levels. After adjusting for lipids, we calculated a food web magnification factor of 1.6 for SigmaPCBs, which is low compared to marine and lentic food webs. The predictive power of TP for individual congeners increased with Kow (octanol-water partition coefficient), with regression slope approximately 0.48 and r2 approximately 0.70 for Kow > 6.5. The proportion of high Kow compounds increased with distance from the source and with trophic position. Spatial variation in congener patterns was high, in contrast to marine and lentic systems where variation is typically low.

  6. Analytical results and sample locations of reanalyzed NURE stream-sediment and soil samples for the Humboldt River basin mineral-environmental assessment, northern Nevada

    USGS Publications Warehouse

    Folger, H. W.

    2000-01-01

    The U.S. Geological Survey (USGS), in cooperation with the Bureau of Land Management (BLM), began a study in 1996 to describe to the geochemistry of the Humboldt River Basin. The principal sample media evaluated are stream-sediment and soil samples retrieved from the National Uranium Resource Evaluation (NURE) archives located in Denver, Colorado. Samples were retrieved from the Wells, McDermitt, Vya, Lovelock, Winnemucca, Elko, Ely, Millett, Reno, and Tonopah 1? x 2? quadrangles in northern Nevada. The data are appropriate for large-scale reconnaissance resource evaluations and landscape geochemical-geoenvironmental evaluations. The analytical results are presented in this report.

  7. Geology-based method of assessing sensitivity of streams to acidic deposition in Charles and Anne Arundel Counties, Maryland

    USGS Publications Warehouse

    Rice, Karen C.; Bricker, Owen P.

    1991-01-01

    The report describes the results of a study to assess the sensitivity of streams to acidic deposition in Charles and Anne Arundel Counties, Maryland using a geology-based method. Water samples were collected from streams in July and August 1988 when streams were at base-flow conditions. Eighteen water samples collected from streams in Charles County, and 17 water samples from streams in Anne Arundel County were analyzed in the field for pH, specific conductance, and acid-neutralizing capacity (ANC); 8 water samples from streams in Charles County were analyzed in the laboratory for chloride and sulfate concentrations. The assessment revealed that streams in these counties are sensitive to acidification by acidic deposition.

  8. [Experience of information sharing between local healthcare management and regional Administration of Federal Service for Surveillance for Protection of Consumers Rights and Human Welfare in Sverdlovsk region during outbreak of Legionnaires' disease in town Verkhnyaya Pyshma in July-August 2007].

    PubMed

    Syrochkina, M A; Skliar, M S; Romanenko, V V; Smirnova, S S; Mikhaĭlova, A O; Bubnova, E M; Fefilov, V V; Tatareva, S V; Chadova, E A; Bobyleva, Z D; Amon, E P; Beĭkin, Ia B; Besedina, L G; Mel'nikova, O V; Shilova, V P; Rozanova, S M; Pervalova, E Iu

    2008-01-01

    Issues of reliability, uniformity, and timeliness of reporting and sharing of information during outbreaks of infectious diseases are basic for establishment of tactics and strategy of organizational, antiepidemic, and clinical measures. Analysis of experience in sharing of information between medical care organization service and services ensuring sanitary-epidemiological welfare of population during outbreak of Legionnaires' disease in town Verkhnyaya Pyshma in July-August 2007 was performed in the article.

  9. Recovering stimulus locations using populations of eye-position modulated neurons in dorsal and ventral visual streams of non-human primates

    PubMed Central

    Sereno, Anne B.; Sereno, Margaret E.; Lehky, Sidney R.

    2014-01-01

    We recorded visual responses while monkeys fixated the same target at different gaze angles, both dorsally (lateral intraparietal cortex, LIP) and ventrally (anterior inferotemporal cortex, AIT). While eye-position modulations occurred in both areas, they were both more frequent and stronger in LIP neurons. We used an intrinsic population decoding technique, multidimensional scaling (MDS), to recover eye positions, equivalent to recovering fixated target locations. We report that eye-position based visual space in LIP was more accurate (i.e., metric). Nevertheless, the AIT spatial representation remained largely topologically correct, perhaps indicative of a categorical spatial representation (i.e., a qualitative description such as “left of” or “above” as opposed to a quantitative, metrically precise description). Additionally, we developed a simple neural model of eye position signals and illustrate that differences in single cell characteristics can influence the ability to recover target position in a population of cells. We demonstrate for the first time that the ventral stream contains sufficient information for constructing an eye-position based spatial representation. Furthermore we demonstrate, in dorsal and ventral streams as well as modeling, that target locations can be extracted directly from eye position signals in cortical visual responses without computing coordinate transforms of visual space. PMID:24734008

  10. Solvent Refined Coal (SRC) process: trace elements. Research and development report No. 53, interim report No. 31, August 1976-July 1977. Volume III. Pilot plant development work. Part 6. [Fate of 36 trace elements

    SciTech Connect

    1980-03-01

    Results are presented on a study of the distribution and fate of 34 trace elements in the Solvent Refined Coal Process at the pilot plant located at Fort Lewis, Washington, and operated by The Pittsburg and Midway Coal Mining Co. under contract with the US Department of Energy. Neutron activation analysis was used to determine Ti, V, Ca, Mg, Al, Cl, Mn, As, Sb, Se, Hg, Br, Co, Ni, Cr, Fe, Na, Rb, Cs, K, Sc, Tb, Eu, Sm, Ce, La, Sr, Ba, Th, Hf, Ta, Ga, Zr, and Cu in feed coals, process solvent, Solvent Refined Coal (SRC), mineral residues, wet filter cake, by-product solvents, process and effluent waters and by-product sulfur. The sample points were chosen such that the major process streams were adequately described and that the major input and output materials were included. Atomic absorption spectrophotometry was used to measure the toxic elements Pb, Cd, Be in plant-derived solvents, effluent water and Hamer Marsh water. Specific methods were developed for analysis of a wide range of material compositions. The neutron activation analysis procedures were divided into short and long irradiation procedures for elements with short half lives (less than 3 hours) and intermediate to long half lives ( 8 hours to 5.2 years). Data are presented for a third equilibrium set of samples from the SRC-I process and compared to two similar sets analyzed previously. A material balance (or budget) was calculated for each element from the concentration data and the yields of each process fraction. Data are also presented on a study of carbon monoxide addition to the hydrogen stream and its effect on trace elements, and trace element data on a study of thirty-six plant effluent water samples taken during an SRC-I production run.

  11. Velocity and surface altitude of the lower part of Hubbard Glacier, Alaska, August 1978

    USGS Publications Warehouse

    Krimmel, R.M.; Sikonia, W.G.

    1986-01-01

    The terminus position and locations of numerous points on the lower part of Hubbard Glacier were determined from 1:58,000 scale vertical aerial photographs taken July 30, 1978 and August 23, 1978. The same surface features were located on each set of photography, allowing displacement during the time interval to be measured. Velocity of the lower glacier for the 24-day interval was about 7 m/day. The terminus receded 45 m between the two dates. (Author 's abstract)

  12. Logging Report 1 – Temperature/Gamma Ray/Collar Locator Log, EE-2A, 2450 psig Shut-in Log, August 8, 1991

    SciTech Connect

    Dreesen, Donald S.; Anderson, David W.

    1991-08-14

    Oil Well Perforators (OWP) was mobilized on August 5th and arrived on August 6th. OWP's grease injection head was installed on the LANL wireline and the wireline was re-headed with a LANL cable head. OWP provided the following pressure control equipment: a 40 ft long 5-1/2" API 5000 psig WP (working pressure) casing lubricator, a 5-1/2" API 3000 psig WP wireline blow-out-preventer, a 15000 psig WP grease injection head with 0.425-0.430" flow tubes and a grease injection system, and the 15000 psig WP high pressure hoses needed to connect the grease system to the grease head. The grease head included three flow sections, two active and one reserve, and two injection hoses were run to the head. All of the instruments operated throughout the logging operation. There were no problems with lowering or raising the tools. The pressure control equipment performed well and leakage at the grease head was insignificant.

  13. Carbon dioxide, hydrographic, and chemical data obtained in the Central South Pacific Ocean (WOCE sections P17S and P16S) during the tunes-2-expedition of the R/V Thomas Washington, July--August 1991

    SciTech Connect

    1991-12-31

    This data documentation discusses the procedures and methods used to measure total carbon dioxide (TCO{sub 2}), discrete partial pressure of TCO{sub 2} (pCO{sub 2}), and total alkalinity (TALK), during the Research Vessel (R/V) Thomas Washington TUNES Leg 2 Expedition in the central South Pacific Ocean. Conducted as part of the World Ocean Circulation Experiment (WOCE), the cruise began in Papeete, Tahiti, French Polynesia, on July 16, 1991, and returned to Papeete on August 25, 1991. WOCE Meridional Sections P17S along 135{degrees} W and P16S along 150{degrees} W were completed during the 40-day expedition. A total of 97 hydrographic stations were occupied. Hydrographic and chemical measurements made along WOCE Sections P17S and P16S included pressure, temperature, salinity, and oxygen measured by conductivity, temperature and depth sensor; bottle salinity; oxygen; phosphate; nitrate; nitrite; silicate; CFC-12; CFC- 11; TCO{sub 2}; TALK; and pCO{sub 2} measured at 20{degrees}C. The TCO{sub 2} concentration in 1000 seawater samples was determined with a coulometric analysis system, the pCO{sub 2} in 940 water samples was determined with an equilibrator/gas chromatograph system, while the TALK concentration in 139 samples was determined on shore at the laboratory of C. Goyet of Woods Hole Oceanographic Institution with an alkalinity titration system. In addition, 156 coulometric measurements for the Certified Reference Material (Batch {number_sign}6) were made and yielded a mean value of 2303.2 {plus_minus} 1.5 {mu}mol/kg. This mean value agrees within a standard deviation of the 2304.6 {plus_minus} 1.6 {mu}mol/kg (N=9) value determined with the manometer of C. D. Keeling at Scripps Institution of Oceanography (SIO). Replicate samples from 11 Niskin bottles at 4 stations were also collected for later shore-based reference analyses of TCO{sub 2} and TALK by vacuum extraction and manometry in the laboratory of C. D. Keeling of SIO.

  14. Rainfall, Discharge, and Water-Quality Data During Stormwater Monitoring, July 1, 2007, to June 30, 2008; Halawa Stream Drainage Basin and the H-1 Storm Drain, Oahu, Hawaii

    USGS Publications Warehouse

    Presley, Todd K.; Jamison, Marcael T.J.; Young, Stacie T.M.

    2008-01-01

    Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. The program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream and to assess the effects from the H-1 storm drain on Manoa Stream. For this program, rainfall data were collected at three stations, continuous discharge data at four stations, and water-quality data at six stations, which include the four continuous discharge stations. This report summarizes rainfall, discharge, and water-quality data collected between July 1, 2007, and June 30, 2008. A total of 16 environmental samples were collected over two storms during July 1, 2007, to June 30, 2008, within the Halawa Stream drainage area. Samples were analyzed for total suspended solids, total dissolved solids, nutrients, chemical oxygen demand, and selected trace metals (cadmium, chromium, copper, lead, and zinc). Additionally, grab samples were analyzed for oil and grease, total petroleum hydrocarbons, fecal coliform, and biological oxygen demand. Some samples were analyzed for only a partial list of these analytes because an insufficient volume of sample was collected by the automatic samplers. Three additional quality-assurance/quality-control samples were collected concurrently with the storm samples. A total of 16 environmental samples were collected over four storms during July 1, 2007, to June 30, 2008 at the H-1 Storm Drain. All samples at this site were collected using an automatic sampler. Samples generally were analyzed for total suspended solids, nutrients, chemical oxygen demand, oil and grease, total petroleum hydrocarbons, and selected trace metals (cadmium, chromium, copper, lead, nickel, and zinc), although some samples were analyzed for only a partial list of these analytes. During the storm of January 29, 2008, 10 discrete samples were collected. Varying constituent concentrations were detected for the samples collected

  15. Concurrent variations in the location and intensity of the Asian winter jet streams and the possible mechanism

    NASA Astrophysics Data System (ADS)

    Xue, Daokai; Zhang, Yaocun

    2017-07-01

    This study investigates the concurrent variations in the location and intensity of the East Asian subtropical jet (EASJ) and polar front jet (EAPJ) with a focus on the relationship between the variations and the atmospheric circulation in the mid-latitude region. The possible mechanisms for the concurrent variations of the EASJ and EAPJ are explored. The wintertime upper-level zonal wind variation over the landmass (50°-100°E) is characterized by two principal modes, i.e., the out-of-phase variations in the intensity and the meridional displacements of the EASJ/EAPJ. The EASJ and EAPJ are intensified (weakened) when they are located close to (far away from) each other, corresponding to a weakened (intensified) East Asian trough over the northern Pacific region and a decreased (increased) geopotential height in the mid-latitude over central Asia. The spatial pattern of 500 hPa geopotential height anomaly is similar to the Eurasian teleconnection pattern, while the pattern of sea level pressure anomaly shows a feature similar to the Arctic oscillation. Analyses of related thermal-dynamical processes indicate that the increased (decreased) diabatic heating and horizontal heat transport lead to a larger (smaller) meridional temperature gradient over the EASJ/EAPJ regions, which subsequently intensifies (weakens) the East Asian jets. Severe (weak) convective activities accompanied with warmer (colder) SST in the tropics also contribute to the intensification (weakening) of the EASJ and EAPJ. Dynamically, the strong (weak) divergence of the eddy vorticity flux along the northern Tibetan Plateau and that of the Eliassen-Palm flux of the synoptic-scale stationary waves are favorable for the intensification (weakening) of zonal winds through the wave-mean flow interactions. As a result, the EASJ and EAPJ are intensified (weakened).

  16. Concurrent variations in the location and intensity of the Asian winter jet streams and the possible mechanism

    NASA Astrophysics Data System (ADS)

    Xue, Daokai; Zhang, Yaocun

    2016-08-01

    This study investigates the concurrent variations in the location and intensity of the East Asian subtropical jet (EASJ) and polar front jet (EAPJ) with a focus on the relationship between the variations and the atmospheric circulation in the mid-latitude region. The possible mechanisms for the concurrent variations of the EASJ and EAPJ are explored. The wintertime upper-level zonal wind variation over the landmass (50°-100°E) is characterized by two principal modes, i.e., the out-of-phase variations in the intensity and the meridional displacements of the EASJ/EAPJ. The EASJ and EAPJ are intensified (weakened) when they are located close to (far away from) each other, corresponding to a weakened (intensified) East Asian trough over the northern Pacific region and a decreased (increased) geopotential height in the mid-latitude over central Asia. The spatial pattern of 500 hPa geopotential height anomaly is similar to the Eurasian teleconnection pattern, while the pattern of sea level pressure anomaly shows a feature similar to the Arctic oscillation. Analyses of related thermal-dynamical processes indicate that the increased (decreased) diabatic heating and horizontal heat transport lead to a larger (smaller) meridional temperature gradient over the EASJ/EAPJ regions, which subsequently intensifies (weakens) the East Asian jets. Severe (weak) convective activities accompanied with warmer (colder) SST in the tropics also contribute to the intensification (weakening) of the EASJ and EAPJ. Dynamically, the strong (weak) divergence of the eddy vorticity flux along the northern Tibetan Plateau and that of the Eliassen-Palm flux of the synoptic-scale stationary waves are favorable for the intensification (weakening) of zonal winds through the wave-mean flow interactions. As a result, the EASJ and EAPJ are intensified (weakened).

  17. August streamflow

    NASA Astrophysics Data System (ADS)

    Streamflows varied across the country during August, with record low flows reported in New York and on the Columbia River at the Dalles, Oreg., while record high flows were reported in Alabama, Kansas, and North Dakota, according to the end of the month check on water resources conditions by the U.S. Geological Survey (USGS). USGS hydrologists said that a nationwide tally of the 171 streamflow gaging stations that reported during August showed that 25% (43 stations) recorded flows in the above-normal range, 59% (101 stations) had flows in the normal range, and 16% (27 stations) recorded flows in the below-normal range.

  18. Location, Location, Location!

    ERIC Educational Resources Information Center

    Ramsdell, Kristin

    2004-01-01

    Of prime importance in real estate, location is also a key element in the appeal of romances. Popular geographic settings and historical periods sell, unpopular ones do not--not always with a logical explanation, as the author discovered when she conducted a survey on this topic last year. (Why, for example, are the French Revolution and the…

  19. Location, Location, Location!

    ERIC Educational Resources Information Center

    Ramsdell, Kristin

    2004-01-01

    Of prime importance in real estate, location is also a key element in the appeal of romances. Popular geographic settings and historical periods sell, unpopular ones do not--not always with a logical explanation, as the author discovered when she conducted a survey on this topic last year. (Why, for example, are the French Revolution and the…

  20. Trophic ecology of Hemigrammus marginatus Ellis, 1911 (Characiformes, Characidae) in a conserved tropical stream.

    PubMed

    Fragoso-Moura, E N; Luiz, T F; Coeti, R Z; Peret, A C

    2017-01-01

    The trophic ecology of ichthyofauna in a stream can be related to the presence or absence of riparian and aquatic vegetation, and mainly resource availability. Therefore, the aim of this study was to analyse the seasonal and ontogenetic variations for the trophic ecology of Hemigrammus marginatus in the Beija-Flor stream located at the Jataí Ecological Station in the municipality of Luiz Antônio-SP, Brazil. In order to attain this objective, the data collections were carried out on a monthly basis from August, 2011 to July, 2012. Fish were collected using a trawl net and bait traps from three collection stations distributed along the Beija-Flor stream. The quality of the water was evaluated by the chemical variables: ammonia, nitrate, total nitrogen, total phosphorus, and physical temperature, dissolved oxygen, pH, turbidity and conductivity, obtained by using a Yellow Springs sonde. The collected specimens were fixed in 10% formalin in the field and were subjected to biometric measurements in the laboratory. The stomachs were weighed and transferred to 70% alcohol and the stomach contents were analysed using a stereomicroscope at the lowest possible taxonomic level. The species was considered insectivorous and the autochthonous food items were the most important during the dry season, mainly from the orders Ephemeroptera and Trichoptera, while allochthonous items from the order Hymenoptera were more important in the wet season. The young individuals' diet was based on the consumption of zooplankton, and insofar as the fish develops, there was a decrease in this item in the diet showing that the species has ontogenetic shifts in its diet. The conservation state of the Beija-Flor stream, as well as the flexibility of using food and food resources provided by aquatic macrophytes and riparian vegetation are key factors for the high abundance of the H. marginatus species.

  1. Aqueous geochemical data from the analysis of stream water samples collected in August 2004--Taylor Mountains 1:250,000 scale Quadrangle, Alaska

    USGS Publications Warehouse

    Wang, Bronwen; Mueller, Seth; Bailey, Elizabeth; Lee, Greg

    2006-01-01

    We report on the chemical analysis of water samples collected from the Taylor Mountains 1:250,000 quadrangle. Samples were collected as part of the multi-year U.S. Geological Survey's project -- Geologic and Mineral Deposit Data for Alaskan Economic Development. Data presented here are from water samples collected primarily in the northeastern part of the Taylor Mountains quadrangle. The data include samples taken from the Taylor Mountains C1, C2, D1, D2, and D4 1:63,360 scale quadrangles. The data are being released at this time with minimal interpretation. Site selection was based on a regional sampling strategy that focused on first and second order drainages. Water sampling site selection was based on landscape parameters that included physiography, wetland extent, lithological changes, and the cursory field review of the mineralogy from the pan concentrates. Stream water in the Taylor Mountians quadrangle is dominated by bicarbonate (HCO3-), though in a few samples more than 50% of the anionic charge can be attibuted to sulfate ( SO42-). The major-cation chemistry range from Ca/Mg dominated to a mix of Ca/Mg/Na+K. Good agreement was found between the major cation and anions in the duplicate samples. Many trace elements were at or near the method detection limit in these samples but good agreement was found between duplicate samples for elements with detectable concentrations. Major ion concentrations were below detection in all field blanks and the trace elements concentrations generally were below detection. However, Ta (range 0.9 -.1 ug/L) and Zn (1 to 3.5 ug/L) were detected in all blanks and Ba ( 0.24 ug/L) and Th (0.2 ug/L) were detected in one blank. There was good agreement between dupilicate total- and methyl- mercury and DOC samples; however, total mercury, methyl-mercury and dissolve organic carbon (DOC) were detected in the blank at 2.35 ng/L, 0.07 ng/L and 0.57 mg/L, respectively.

  2. Finding of an historical document describing an eruption in the NW flank of Etna in July 1643 AD: timing, location and volcanic products

    NASA Astrophysics Data System (ADS)

    Branca, Stefano; Vigliotti, Luigi

    2015-11-01

    The eruptive activity of Etna volcano is well known in detail due to the integration of numerous geological and historical investigations. The study of historical sources of the volcano's activity started in the sixteenth century and has been reported in several catalogues of the eruptions published mainly in the eighteenth and nineteenth centuries. We have found a new document written in 1643 by the Fiscal Prosecutor of the High Court for the viceroy of Sicily in which he reported earthquakes occurring in the small town of Troina. The document also describes an eruption taking place in the Bronte region of Etna between 18 and 28 of July that was previously unknown in current historical catalogues, even those compiled by recent historiographical studies. This eruption clearly produced the volcanic products outcropping in the upper NW flank, shown on the new geological map of Etna as the Val di Cannizzola lava flow. The July 1643 eruption was a brief event with the emission of a roughly 2.7-km-long lava flow of very low volume (3-4 × 106 m3). It occurred in a period characterised instead by long-lasting and high-lava-volume eruptions that preceded the large and destructive 1669 eruption, the main event that has occurred on Etna in historical time.

  3. Survey of the state of the art in near-shore pipeline location and burial assessment. Topical report, August 1990--November 1991

    SciTech Connect

    Wilkey, P.L.

    1991-11-01

    Project`s objective is to evaluate state-of-the-art methods for locating pipelines in shallow (less than 15 ft) water and for determining and monitoring their burial depths. The following recommendations are made on the research needed in three areas for locating near-shore, shallowly buried pipelines: (1) Sensors: The pipeline industry has selected the magnetic gradiometer array (GA) as a preferred sensor method. Other potential methods exist as backups. No additional research is recommended. (2) Remotely Operated Vehicles (ROVs): The Pipeline Research Committee is pursuing development of a prototype ROV is deliver the GA or other similar equipment to pipeline locations. (3) Phenomena: The data being collected from research on the phenomena affecting seabed conditions and the bathymetric data being collected along the Gulf Coast should be synthesized. This new effort should focus on identifying erosion-prone areas with respect to present and potential future pipeline locations. Technical approach is to get the broadest perspective on the concerns related to the determination of burial conditions for offshore pipelines, Argonne National Laboratory (ANL) contacted individuals and organizations from the gas and petroleum industries, hardware and software vendors, academicians, and representatives from the government. A literature survey yielded the names of persons within academia who are presently working on similar applications with sensors. In the oil and gas industry, individuals and organizations involved in the Pipeline Research Committee made extensive contributions to the review and also provided the names of meaningful contacts from among their vendors. Discussions were held with the various persons both on the telephone and face to face. Vendors provided background materials and overview presentations on their capabilities for ANL to review.

  4. Water quality of the Upper West Branch Susquehanna River and tributary streams between Curwensville and Renovo, Pennsylvania, May and July 1984

    USGS Publications Warehouse

    Hainly, R.A.; Barker, J.L.

    1993-01-01

    The soils and rocks of the Upper West Branch Susquehanna River basin, from its headwaters downstream for 150 miles, are laden with pyritic materials that have the potential to produce acid mine drainage. The effects of mine drainage are severe, particularly in the reach between Curwensville and Renovo where present water quality cannot support viable populations of benthic macroinvertebrates or fish. During base-flow periods in May and July 1984, streamflow and water quality were measured at four sites on the West Branch Susquehanna River and near the mouths of 94 tributaries. Water-quality constituents determined were temperature, specific conductance, pH, acidity, alkalinity, and concentrations of dissolved sulfate and total and dissolved forms of iron, manganese, aluminum, and zinc. The data collected for the study indicate that the predominant influence on water quality of the tributaries is land use. An area where few or no coal deposits or disturbed area were present was found to have relatively good surface-water quality (median pH was nearly 5.5 units), whereas areas where coal mining was active in the basin, or where large areas of unreclaimed mines were present, were found to have poorest water quality (median pH was generally less than 4.0 units). In general, Moshannon, Sinnemahoning, Clearfield, and Kettle Creeks were found to be the largest tributary sources of acidity and total-recoverable iron to the river. During the May sampling, Moshannon, Sinnemahoning, and Clearfield Creeks contributed 63 percent of the 365 tons/day of acidity, and Moshannon and Clearfield Creeks contributed 76 percent of the 44.8 tons/day of total-recoverable iron that were discharged to the river. During the July sampling, Moshannon, Kettle, and Clearfield Creeks contributed 60 percent of the 131 tons/day of acidity, and Moshannon and Kettle Creeks contributed 51 percent of the 6.5 tons/day of total-recoverable iron discharged to the river . The West Branch Susquehanna River

  5. Techniques and equipment for detecting and locating incipient faults in underground power transmission cable systems. Technical progress report 3, 1 July 1979-30 September 1979

    SciTech Connect

    Phillips, A.C.; Nanevicz, J.E.; Adamo, R.C.; Cole, C.A.; Honey, S.K.; Petro, J.P.

    1980-04-01

    The study is divided into seven tasks: (1) developing RF sounding techniques including experimental detector/locator units such as the HV crossmodulation sounder; (2) constructing a prototype swept-frequency cable sounder; (3) measuring cable characteristics; (4) developing power-transmission-line signal couplers; (5) constructing an HV source to augment experimental and prototype detector/locator units; (6) evaluating the prototype swept-frequency cable sounder; and (7) studying technically effective and economical use of incipient-fault detector/locator units.

  6. Emergency Locator Transmitter Crash Testing

    NASA Image and Video Library

    2015-07-29

    Drop-testing a series of three Cessna 172 aircraft, NASA simulated severe but survivable plane accidents on July 2, July 29 and August 26, 2015, to test emergency locator transmitters (ELTs). A research team equipped the vintage airplanes with five ELTs, two crash test dummies, cameras and data-collecting sensors. ELTs are installed on general aviation and commercial planes to transmit a location signal in the event of a crash. Current ELT models send that signal to orbiting satellites, which repeat it to the nearest search and rescue ground station. The signal is used to determine and transmit the ELT's identity and location to rescuers. ELTs have to work in the extreme circumstances involved in an airplane crash. Included in those extreme circumstances are the possibilities of excessive vibration, fire and impact damage. NASA research is designed to find practical ways to improve ELT system performance and robustness, giving rescue workers the best chance of saving lives. The research was funded by the Search and Rescue Mission Office at NASA's Goddard Space Flight Center in Greenbelt, Maryland. The testing took place at NASA’s Langley Research Center in Hampton, Virginia. This is a video of the July 29, 2015, test.

  7. Chemical quality, benthic organisms, and sedimentation in streams draining coal-mined lands in Raccoon Creek basin, Ohio, July 1984 through September 1986

    USGS Publications Warehouse

    Wilson, K.S.

    1988-01-01

    The Ohio Department of Natural Resources, Division of Reclamation, plans widespread reclamation of abandoned coal mines in the Raccoon Creek basin in southeastern Ohio. Throughout Raccoon Creek basin, chemical, biological, and suspended-sediment data were collected from July 1984 through September 1986. Chemical and biological data collected at 17 sites indicate that the East Branch, Brushy Creek, Hewett Fork, and Little Raccoon Creek subbasins, including Flint Run, are affected by drainage from abandoned coal mines. In these basins, median pH values ranged from 2.6 to 5.1, median acidity values ranged from 20 to 1,040 mg/L (milligrams per liter) as CaCo3, and median alkalinity values ranged from 0 to 4 mg/L as CaCo3. Biological data indicate that these basins do not support diverse populations because of degraded water systems. Suspended-sediment yields of 70.7 tons per square mile per year at the headwaters of Raccoon Creek and 54.5 tons per square mile per year near the month of Raccoon Creek indicate that cumulative sedimentation from erosion of abandoned-mine lands is not excessive in the basin.

  8. Using the IRI, the MAGIC model, and the co-located ground-based GPS receivers to study ionospheric solar eclipse and storm signatures on July 22, 2009

    NASA Astrophysics Data System (ADS)

    Lin, Chi-Yen; Liu, Jann-Yenq; Lin, Chien-Hung; Sun, Yang-Yi; Araujo-Pradere, Eduardo A.; Kakinami, Yoshihiro

    2012-06-01

    The longest total solar eclipse in the 21st century occurred in Southeast Asia on 22 July 2009 from 00:55 to 04:15 UT, and was accompanied by a moderate magnetic storm starting at 03:00 UT with a D st reduction of -78 nT at 07:00 UT. In this study, we use the ionospheric reference model IRI, the data assimilation model MAGIC, and ground-based GPS receivers to simulate and examine the ionospheric solar eclipse and geomagnetic storm signatures in Taiwan and Japan. Cross-comparisons between the two model results and observations show that IRI fails to simulate the two signatures while MAGIC partially reproduces the storm features. It is essential to include ground-based GPS measurements to improve the IRI performance.

  9. Distribution and abundance of zooplankton at selected locations on the Savannah River and from tributaries of the Savannah River Plant: December 1984--August 1985

    SciTech Connect

    Chimney, M.J.; Cody, W.R.

    1986-11-01

    Spatial and temporal differences in the abundance and composition of the zooplankton community occurred at Savannah River and SRP creek/swamp sampling locations. Stations are grouped into four categories based on differences in community structure: Savannah River; thermally influenced stations on Four Mile Creek and Pen Branch; closed-canopy stations in the Steel Creek system; and open-canopy Steel Creek stations, non-thermally influenced stations on Pen Branch and Beaver Dam Creek. Differences among stations were little related to water temperature, dissolved oxygen concentration, conductivity or pH at the tine of collection. None of these parameters appeared to be limiting. Rather, past thermal history and habitat structure seemed to be important controlling factors. 66 refs.

  10. Temporal changes in dissolved (137)Cs concentrations in groundwater and stream water in Fukushima after the Fukushima Dai-ichi Nuclear Power Plant accident.

    PubMed

    Iwagami, Sho; Tsujimura, Maki; Onda, Yuichi; Nishino, Masataka; Konuma, Ryohei; Abe, Yutaka; Hada, Manami; Pun, Ishwar; Sakaguchi, Aya; Kondo, Hiroaki; Yamamoto, Masayoshi; Miyata, Yoshiki; Igarashi, Yasuhito

    2017-01-01

    The concentration of dissolved (137)Cs in groundwater and stream water in the headwater catchments in Yamakiya district, located ∼35 km north west of Fukushima Dai-ichi Nuclear Power Plant (FDNPP), was monitored from June 2011 to July 2013, after the earthquake and tsunami disaster. Groundwater and stream water were sampled at intervals of approximately 2 months at each site. Intensive sampling was also conducted during rainstorm events. Compared with previous data from the Chernobyl NPP accident, the concentration of dissolved (137)Cs in stream water was low. In the Iboishi-yama catchment, a trend was observed for the concentration of dissolved (137)Cs in stream water to decline, which could be divided into two phases by October 2011 (a fast flush of activity as a result of rapid washoff and a slow decline as a result of soil fixation and redistribution processes). The highest (137)Cs concentration recorded at Iboishi-yama was 1.2 Bq/L on August 6, 2011, which then declined to 0.021-0.049 Bq/L during 2013 (in stream water under normal water-flow conditions). During the rainfall events, the concentration of dissolved (137)Cs in stream water increased temporarily. The concentration of dissolved (137)Cs in groundwater at a depth of 30 m at Iboishi-yama displayed a decreasing trend from 2011 to 2013, with a range from 0.039 Bq/L to 0.0025 Bq/L. The effective half-lives of stream water in the initial fast flush and secondary phases were 0.10-0.21 and 0.69-1.5 y, respectively in the three catchments. The effective half-life of groundwater was 0.46-0.58 y at Koutaishi-yama and 0.50-3.3 y at Iboishi-yama. The trend for the concentration of dissolved (137)Cs to decline in groundwater and stream water was similar throughout 2012-2013, and the concentrations recorded in deeper groundwater were closer to those in stream water. The declining trend of dissolved (137)Cs concentrations in stream water was similar to that of the loss of canopy (137)Cs by throughfall, as

  11. Rainfall, Discharge, and Water-Quality Data During Stormwater Monitoring, July 1, 2008, to June 30, 2009 - Halawa Stream Drainage Basin and the H-1 Storm Drain, Oahu, Hawaii

    USGS Publications Warehouse

    Presley, Todd K.; Jamison, Marcael T.J.

    2009-01-01

    Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. The program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream, and to assess the effects from the H-1 storm drain on Manoa Stream. For this program, rainfall data were collected at three stations, continuous discharge data at five stations, and water-quality data at six stations, which include the five continuous discharge stations. This report summarizes rainfall, discharge, and water-quality data collected between July 1, 2008, and June 30, 2009. Within the Halawa Stream drainage area, three storms (October 25 and December 11, 2008, and February 3, 2009) were sampled during July 1, 2008, to June 30, 2009. A total of 43 environmental samples were collected during these three storms. During the storm of October 25, 2009, 31 samples were collected and analyzed individually for metals only. The other 12 samples from the other two storms were analyzed for some or all of the following analytes: total suspended solids, total dissolved solids, nutrients, chemical oxygen demand, and selected trace metals (cadmium, chromium, copper, lead, and zinc). Additionally, grab samples were analyzed for some or all of the following analytes: oil and grease, total petroleum hydrocarbons, fecal coliform, and biological oxygen demand. Some grab and composite samples were analyzed for only a partial list of these analytes, either because samples could not be delivered to the laboratory in a timely manner, or an insufficient volume of sample was collected by the automatic samplers. Two quality-assurance/quality-control samples were collected after cleaning automatic sampler lines to verify that the sampling lines were not contaminated. Four environmental samples were collected at the H-1 Storm Drain during July 1, 2008, to June 30, 2009. An oil and grease sample and a composite sample were collected during the

  12. Effects of pasture management and off-stream water on temporal/spatial distribution of cattle and stream bank characteristics in cool-season grass pastures.

    PubMed

    Schwarte, K A; Russell, J R; Morrical, D G

    2011-10-01

    A 2-yr grazing experiment was conducted to assess the effects of grazing management on cattle distribution and pasture and stream bank characteristics. Six 12.1-ha cool-season grass pastures in central Iowa were allotted to 1 of 3 treatments: continuous stocking with unrestricted stream access (CSU), continuous stocking with stream access restricted to 4.9-m-wide stabilized crossings (CSR), or rotational stocking with stream access restricted to a riparian paddock (RP). Pastures were stocked with 15 fall-calving Angus cows (Bos taurus L.) from mid-May to mid-October for 153 d in 2008 and 2009. A global positioning system (GPS) collar recording cow position every 10 min was placed on at least 1 cow per pasture for 2 wk of each month from May through September. Off-stream water was provided to cattle in CSU and CSR treatments during the second of the 2 wk when GPS collars were on the cattle. A black globe temperature relative humidity index (BGTHI) was measured at 10-min intervals to match the time of the GPS measurements. Each month of the grazing season, forage characteristics (sward height, forage mass, and CP, IVDMD, and P concentrations) and bare and fecal-covered ground were measured. Stream bank erosion susceptibility was visually scored in May, August, and October (pre-, mid-, and post-stocking). Cattle in RP and CSR treatments spent less time (P < 0.10) within the stream zone (0 to 3 m from stream center) in June and August and in the streamside zone (0 to 33 m from stream zone) in May through August and May through September, respectively, than cattle in CSU pastures. However, off-stream water had no effect on cattle distribution. Compared with the CSU treatment, the CSR treatment reduced the probability (P < 0.10) that cattle were within the riparian zone (0 to 36 m from stream center) at BGTHI of 50 to 100. Bare ground was greater (P < 0.10) in pastures with the CSU than CSR and RP treatments in the stream and streamside zones in September and October and

  13. The remarkable occurrence of large rainfall-induced debris flows at two different locations on July 12, 2008, Southern Sierra Nevada, CA, USA

    USGS Publications Warehouse

    DeGraff, J.V.; Wagner, D.L.; Gallegos, A.J.; DeRose, M.; Shannon, C.; Ellsworth, T.

    2011-01-01

    On July 12, 2008, two convective cells about 155 km apart produced a brief period of intense rainfall triggering large debris flows in the southern Sierra Nevada. The northernmost cell was centered over Oak Creek Canyon, an east-flowing drainage, and its tributaries near Independence, CA, USA. About 5:00 P.M., debris flows passed down the South Fork and North Fork of Oak Creek to merge into a large single feature whose passage affected the historic Mt. Whitney Fish hatchery and blocked California State Highway 395. At about the same time, the southernmost cell was largely centered over Erskine Creek, a main tributary of the west-flowing Kern River. Debris flows issued from several branches to coalesce into a large debris flow that passed along Erskine Creek, through the town of Lake Isabella, CA, USA and into the Kern River. It was observed reaching Lake Isabella about 6:30 P.M. Both debris flows caused significant disruption and damage to local communities. ?? 2011 Springer-Verlag.

  14. The Massachusetts Sustainable-Yield Estimator: A decision-support tool to assess water availability at ungaged stream locations in Massachusetts

    USGS Publications Warehouse

    Archfield, Stacey A.; Vogel, Richard M.; Steeves, Peter A.; Brandt, Sara L.; Weiskel, Peter K.; Garabedian, Stephen P.

    2010-01-01

    Federal, State and local water-resource managers require a variety of data and modeling tools to better understand water resources. The U.S. Geological Survey, in cooperation with the Massachusetts Department of Environmental Protection, has developed a statewide, interactive decision-support tool to meet this need. The decision-support tool, referred to as the Massachusetts Sustainable-Yield Estimator (MA SYE) provides screening-level estimates of the sustainable yield of a basin, defined as the difference between the unregulated streamflow and some user-specified quantity of water that must remain in the stream to support such functions as recreational activities or aquatic habitat. The MA SYE tool was designed, in part, because the quantity of surface water available in a basin is a time-varying quantity subject to competing demands for water. To compute sustainable yield, the MA SYE tool estimates a daily time series of unregulated, daily mean streamflow for a 44-year period of record spanning October 1, 1960, through September 30, 2004. Selected streamflow quantiles from an unregulated, daily flow-duration curve are estimated by solving six regression equations that are a function of physical and climate basin characteristics at an ungaged site on a stream of interest. Streamflow is then interpolated between the estimated quantiles to obtain a continuous daily flow-duration curve. A time series of unregulated daily streamflow subsequently is created by transferring the timing of the daily streamflow at a reference streamgage to the ungaged site by equating exceedence probabilities of contemporaneous flow at the two locations. One of 66 reference streamgages is selected by kriging, a geostatistical method, which is used to map the spatial relation among correlations between the time series of the logarithm of daily streamflows at each reference streamgage and the ungaged site. Estimated unregulated, daily mean streamflows show good agreement with observed

  15. Combined use of thermal methods and seepage meters to efficiently locate, quantify, and monitor focused groundwater discharge to a sand-bed stream

    USGS Publications Warehouse

    Rosenberry, Donald O.; Briggs, Martin; Delin, Geoffrey N.; Hare, Danielle K.

    2016-01-01

    Quantifying flow of groundwater through streambeds often is difficult due to the complexity of aquifer-scale heterogeneity combined with local-scale hyporheic exchange. We used fiber-optic distributed temperature sensing (FO-DTS), seepage meters, and vertical temperature profiling to locate, quantify, and monitor areas of focused groundwater discharge in a geomorphically simple sand-bed stream. This combined approach allowed us to rapidly focus efforts at locations where prodigious amounts of groundwater discharged to the Quashnet River on Cape Cod, Massachusetts, northeastern USA. FO-DTS detected numerous anomalously cold reaches one to several m long that persisted over two summers. Seepage meters positioned upstream, within, and downstream of 7 anomalously cold reaches indicated that rapid groundwater discharge occurred precisely where the bed was cold; median upward seepage was nearly 5 times faster than seepage measured in streambed areas not identified as cold. Vertical temperature profilers deployed next to 8 seepage meters provided diurnal-signal-based seepage estimates that compared remarkably well with seepage-meter values. Regression slope and R2 values both were near 1 for seepage ranging from 0.05 to 3.0 m d−1. Temperature-based seepage model accuracy was improved with thermal diffusivity determined locally from diurnal signals. Similar calculations provided values for streambed sediment scour and deposition at subdaily resolution. Seepage was strongly heterogeneous even along a sand-bed river that flows over a relatively uniform sand and fine-gravel aquifer. FO-DTS was an efficient method for detecting areas of rapid groundwater discharge, even in a strongly gaining river, that can then be quantified over time with inexpensive streambed thermal methods.

  16. Combined use of thermal methods and seepage meters to efficiently locate, quantify, and monitor focused groundwater discharge to a sand-bed stream

    NASA Astrophysics Data System (ADS)

    Rosenberry, Donald O.; Briggs, Martin A.; Delin, Geoffrey; Hare, Danielle K.

    2016-06-01

    Quantifying flow of groundwater through streambeds often is difficult due to the complexity of aquifer-scale heterogeneity combined with local-scale hyporheic exchange. We used fiber-optic distributed temperature sensing (FO-DTS), seepage meters, and vertical temperature profiling to locate, quantify, and monitor areas of focused groundwater discharge in a geomorphically simple sand-bed stream. This combined approach allowed us to rapidly focus efforts at locations where prodigious amounts of groundwater discharged to the Quashnet River on Cape Cod, Massachusetts, northeastern USA. FO-DTS detected numerous anomalously cold reaches one to several m long that persisted over two summers. Seepage meters positioned upstream, within, and downstream of 7 anomalously cold reaches indicated that rapid groundwater discharge occurred precisely where the bed was cold; median upward seepage was nearly 5 times faster than seepage measured in streambed areas not identified as cold. Vertical temperature profilers deployed next to 8 seepage meters provided diurnal-signal-based seepage estimates that compared remarkably well with seepage-meter values. Regression slope and R2 values both were near 1 for seepage ranging from 0.05 to 3.0 m d-1. Temperature-based seepage model accuracy was improved with thermal diffusivity determined locally from diurnal signals. Similar calculations provided values for streambed sediment scour and deposition at subdaily resolution. Seepage was strongly heterogeneous even along a sand-bed river that flows over a relatively uniform sand and fine-gravel aquifer. FO-DTS was an efficient method for detecting areas of rapid groundwater discharge, even in a strongly gaining river, that can then be quantified over time with inexpensive streambed thermal methods.

  17. Water temperature differences by plant community and location in re-established wetlands in the Sacramento-San Joaquin Delta, California, July 2005 to February 2008

    USGS Publications Warehouse

    Crepeau, Kathryn L.; Miller, Robin L.

    2014-01-01

    Rates of carbon storage in wetlands are determined by the balance of its inputs and losses, both of which are affected by environmental factors such as water temperature and depth. In the autumn of 1997, the U.S. Geological Survey re-established two wetlands with different shallow water depths—about 25 and 55 centimeters deep—to investigate the potential to reverse subsidence of delta islands by preserving and accumulating organic substrates derived from plant biomass inputs over time. Because cooler water temperatures can slow decomposition rates and increase accretion of plant biomass, water temperature was recorded from July 2005 to February 2008 in the deeper of the two wetlands, where areas of emergent and submerged vegetation persisted throughout the study, to assess differences in water temperature between the two vegetation types. Water temperature was compared at three depths in the water column between areas of emergent and submerged vegetation and between areas near the water inflow and in the wetland interior in both vegetation types. The latter comparison was a way of evaluating the effect of the length of time water had resided in the wetland on water temperatures. There were statistically significant differences in water temperature at all depths between the two vegetation types. Overall, in areas of emergent marsh vegetation, the mean water temperature at the surface was 1.4 degrees Celsius (°C) less than it was in areas of submerged vegetation; however, when analyses accounted for the changes in temperature due to seasonal and diurnal cycles, differences in the mean water temperature between the vegetation types were even greater than this. For example, in the spring, the mean temperatures in areas of emergent marsh vegetation at the surface, mid-point, and near the sediment in the water column were 2.0, 2.3, and 2.1 °C less, respectively, than water temperatures in areas of submerged vegetation. When diurnal changes in temperature were

  18. Ecological characterization of streams, and fish-tissue analysis for mercury and lead at selected locations, Fort Gordon, Georgia, June 1999 to May 2000

    USGS Publications Warehouse

    Gregory, M. Brian; Stamey, Timothy C.; Wellborn, John B.

    2001-01-01

    The U.S. Geological Survey, in cooperation with the Environmental and Natural Resources Management Office of the U.S. Army Signal Center and Fort Gordon, Ga., documented the ecological condition of selected water-bodies on the Fort Gordon military installation from June 1999 to May 2000. This study includes stream-habitat assessments, aquatic invertebrate and fish-community surveys in selected stream reaches, and analyses of mercury and lead concentrations in largemouth bass (Micropterous salmoides) muscle tissue from three impoundments. Assessment surveys indicate lower habitat value scores in some streams draining the more developed areas on Fort Gordon. A small tributary to Butler Creek--which drains parking lots associated with military motor pools and other impervious surfaces--is characterized by moderate levels of bank erosion and excess sediment in the stream channel compared to reference sites. Four other stream reaches are more similar to reference streams in respect to habitat conditions. Invertebrate communities in streams draining these urbanized watersheds are inhabited by 13 to 16 taxa per reach; whereas, 23 and 33 taxa were collected from the two reference stream reaches. Measures of invertebrate abundance, taxa richness, Ephemeroptera, Plecoptera, and Tricoptera Index are lower in streams draining urbanized watersheds. Measures of community similarity also indicate differences between streams draining urbanized areas and reference streams. Streams draining developed areas on Fort Gordon are inhabited by 3 to 10 fish species and included more species regarded as tolerant of degraded water-quality conditions; whereas, the two reference stream reaches support 4 and 10 species, respectively, including one species considered intolerant of degraded water-quality conditions. Mercury was detected in all largemouth bass collected from three impoundments on Fort Gordon. Wet-weight mercury concentrations in fish tissue analyzed from all sites range from 0

  19. Fin development in stream- and hatchery-reared Atlantic salmon

    USGS Publications Warehouse

    Pelis, R.M.; McCormick, S.D.

    2003-01-01

    To determine the effect of development and environment on fin growth, we measured fin lengths of juvenile Atlantic salmon (Salmo salar) from two hatcheries (August, October and April-May), stream-reared fish (July and October) stocked as fry into two tributaries, and smelts from the main stem of the Connecticut River (May). For stream-reared parr, there was a linear relationship between the dorsal, caudal and anal fins with fork length, while the pectoral, pelvic and adipose fins exhibited a curvilinear relationship with fork length. Parr from a high gradient stream had larger caudal fins than fish from a low gradient stream, but other fins did not differ. Regression lines for the fins of stream-reared smelts were all linear when fin length was regressed against fork length. Stream-reared parr had larger pectoral, pelvic and anal fins than smolts of similar size while dorsal and caudal fin lengths did not differ. Regression equations formulated using the fins of stream-reared parr were used to calculate the percent difference (100 x observed fin length/expected) in fin lengths between stream- and hatchery-reared parr. The pelvic, adipose, caudal and anal fins of hatchery-reared parr showed no signs of degeneration by the first sampling period 7 months after hatching, whereas degeneration in the pectoral (13-20%) and dorsal (15-18%) fins was evident at this time. By the end of the study, degeneration was present in every fin except the adipose, with the pectoral (35-65%) and dorsal (32-58%) fins exhibiting the greatest amount of fin loss. All fins of hatchery-reared parr became shorter with time. There were minor differences in fin degeneration among parr from the two hatcheries, but the overall pattern of decreasing fin size was similar, indicating a common cause of fin degeneration. Comparison of stream- and hatchery-reared fish is a valuable means of determining the impact of captive environments on fin growth.

  20. Android Video Streaming

    DTIC Science & Technology

    2014-05-01

    Android Video Streaming by Jonathan Fletcher, David Doria, and David Bruno ARL-TR-6947 May 2014...the originator. Army Research Laboratory Aberdeen Proving Ground, MD 21005-5067 ARL-TR-6947 May 2014 Android Video Streaming...1. REPORT DATE (DD-MM-YYYY) May 2014 2. REPORT TYPE Final 3. DATES COVERED (From - To) July 2013–September 2013 4. TITLE AND SUBTITLE Android

  1. Aqueous geochemical data from the analysis of stream-water samples collected in June and August 2008—Taylor Mountains 1:250,000- and Dillingham D-4 1:63,360-scale quadrangles, Alaska

    USGS Publications Warehouse

    Wang, Bronwen; Owens, Victoria; Bailey, Elizabeth; Lee, Greg

    2011-01-01

    We report on the chemical analysis of water samples collected from the Taylor Mountains 1:250,000- and Dillingham D-4 1:63,360-scale quadrangles, Alaska. Reported parameters include pH, conductivity, water temperature, major cation and anion concentrations, and trace-element concentrations. We collected the samples as part of a multiyear U.S. Geological Survey project entitled "Geologic and Mineral Deposit Data for Alaskan Economic Development." Data presented here are from samples collected in June and August 2008. Minimal interpretation accompanies this data release. This is the fourth release of aqueous geochemical data from this project; data from samples collected in 2004, 2005, and 2006 were published previously. The data in this report augment but do not duplicate or supersede the previous data releases. Site selection was based on a regional sampling strategy that focused on first- and second-order drainages. Water sample sites were selected on the basis of landscape parameters that included physiography, wetland extent, lithological changes, and a cursory field review of mineralogy from pan concentrates. Stream water in the study area is dominated by bicarbonate (HCO3-), although in a few samples more than 50 percent of the anionic charge can be attributed to sulfate (SO42-). The major-cation chemistry of these samples ranges from Ca2+-Mg2+ dominated to a mix of Ca2+-Mg2+-Na++K2+. In most cases, analysis of duplicate samples showed good agreement for the major cation and major anions with the exception of the duplicate samples at site 08TA565. At site 08TA565, Ca, Mg, Cl, and CaCO3 exceeded 25 percent and the concentrations of trace elements As, Fe and Mn also exceeded 25 percent in this duplicate pair. Chloride concentration varied by more than 25 percent in 5 of the 11 duplicated samples. Trace-element concentrations in these samples generally were at or near the detection limit for the method used and, except for Co at site 08TA565, generally good

  2. Quality of water and sediment in streams affected by historical mining, and quality of Mine Tailings, in the Rio Grande/Rio Bravo Basin, Big Bend Area of the United States and Mexico, August 2002

    USGS Publications Warehouse

    Lambert, Rebecca B.; Kolbe, Christine M.; Belzer, Wayne

    2008-01-01

    The U.S. Geological Survey, in cooperation with the International Boundary and Water Commission - U.S. and Mexican Sections, the National Park Service, the Texas Commission on Environmental Quality, the Secretaria de Medio Ambiente y Recursos Naturales in Mexico, the Area de Proteccion de Flora y Fauna Canon de Santa Elena in Mexico, and the Area de Proteccion de Flora y Fauna Maderas del Carmen in Mexico, collected samples of stream water, streambed sediment, and mine tailings during August 2002 for a study to determine whether trace elements from abandoned mines in the area in and around Big Bend National Park have affected the water and sediment quality in the Rio Grande/Rio Bravo Basin of the United States and Mexico. Samples were collected from eight sites on the main stem of the Rio Grande/Rio Bravo, four Rio Grande/Rio Bravo tributary sites downstream from abandoned mines or mine-tailing sites, and 11 mine-tailing sites. Mines in the area were operated to produce fluorite, germanium, iron, lead, mercury, silver, and zinc during the late 1800s through at least the late 1970s. Moderate (relatively neutral) pHs in stream-water samples collected at the 12 Rio Grande/Rio Bravo main-stem and tributary sites indicate that water is well mixed, diluted, and buffered with respect to the solubility of trace elements. The highest sulfate concentrations were in water samples from tributaries draining the Terlingua mining district. Only the sample from the Rough Run Draw site exceeded the Texas Surface Water Quality Standards general-use protection criterion for sulfate. All chloride and dissolved solids concentrations in water samples were less than the general-use protection criteria. Aluminum, copper, mercury, nickel, selenium, and zinc were detected in all water samples for which each element was analyzed. Cadmium, chromium, and lead were detected in samples less frequently, and silver was not detected in any of the samples. None of the sample concentrations of

  3. pH sensitivity of Swedish forest streams related to catchment characteristics and geographical location - Implications for forest bioenergy harvest and ash return

    NASA Astrophysics Data System (ADS)

    Ågren, Anneli; Löfgren, Stefan

    2013-04-01

    Whole-tree harvesting acidifies forest soils more than conventional harvest of stems. There is concern that this excess acidification will also affect surface waters and counteract the well-documented recovery from acid deposition in streams and lakes. Here we present a first attempt to identify the landscape types within Sweden where the streams are most sensitive to acidification and potentially in need of protection from excessive biomass harvest or countermeasures such as ash application. Conservative estimates indicate that forest slash must be harvested from >30 ha to produce the amount of ash needed to restore 1 ha acidified surface water. This highlights the need for careful planning of where ash should be distributed. Streams with a high pH are well buffered by the bicarbonate system and not sensitive to a potential pH decline. Streams with a low pH are also well buffered by dissolved organic carbon and aluminum and are not likely affected by bioenergy harvest. However, streams in the intermediate pH range (5-6.2) are potentially sensitive to acidification from excess base cation removal due to whole-tree harvesting. In such streams a small change in acid neutralizing capacity (ANC) can change pH dramatically. The pH sensitivity of 218 streams in different regions (northern, central, southern, and southwest Sweden) was defined from stream water pH and related to catchment characteristics and stream water acid-base chemistry. At the national level, catchments with till soils and a large proportion of forested wetlands formed the most pH sensitive areas. Because of regional variability in acidification history, amount and distribution of quaternary deposits, vegetation cover, etc. pH sensitivity was determined by different landscape elements in different regions. For example, in northern Sweden streams draining forest mires were the most pH sensitive streams. The patchy spatial distribution of this landscape type, makes it difficult from an administrative

  4. Recharge of shallow aquifers through two ephemeral-stream channels in northeastern Wyoming, 1982-1983

    USGS Publications Warehouse

    Lenfest, L.W.

    1987-01-01

    Quantifying the recharge from ephemeral streams to alluvial and bedrock aquifers will help evaluate the effects of surface mining on alluvial valley floors in Wyoming. Two stream reaches were chosen for study in the Powder River basin. One reach was located along the North Fork Dry Fork Cheyenne River near Glenrock, Wyoming, and the other reach was located along Black Thunder Creek near Hampshire, Wyoming. The reach along the North Fork Dry Fork Cheyenne River was instrumented with 3 gaging stations to measure streamflow and with 6 observation wells to measure groundwater level fluctuations in alluvial and bedrock aquifers in response to streamflow. The 3 streamflow gaging stations were located within the 2.5-mi study reach to measure the approximate gain or loss of discharge along the reach. Computed streamflow losses ranged from 0.43 acre-ft/mi on July 9 , 1982, to 1.44 acre-ft/mi on August 9, 1982. The observation wells completed only in the alluvial aquifer were dry during flow in the North Fork Dry Fork Cheyenne River, whereas water levels in half of the observation wells completed in the bedrock aquifers or the alluvial and bedrock aquifers rose in response to flow in the North Fork Dry Fork Cheyenne River. Groundwater recharge on August 9, 1982, was calculated using a convolution technique using groundwater levels at the upstream site and was estimated to be 26.5 acre-ft/mi. The reach along Black Thunder Creek was instrumented with one gaging station to measure streamflow and with 4 observation wells to measure water level response in alluvial and bedrock aquifers to streamflow. Recharge to the alluvial aquifer from flow in Black Thunder Creek ranged from 3.56 to 12.4 acre-ft/mi. The recharge was estimated using the convolution technique using water level measurements in the observation wells completed in the alluvial aquifer. Water level measurements in the observation wells indicated water level rises in the alluvial and bedrock aquifers in response to

  5. Organic Carbon Sources in Coastal Southeast Alaskan Streams

    NASA Astrophysics Data System (ADS)

    Hood, E.; Edwards, R. T.; D'Amore, D. V.; Lange, B. J.

    2003-12-01

    Dissolved organic matter (DOM) is abundant in southeast Alaskan watersheds and plays an important role in the biological and physical processes in these aquatic systems. Nearly 30% of the land area in southeast Alaska is classified as wetlands, a large proportion of which are peatlands. Peatlands are thought to provide substantial DOM to surface waters. Another important source of carbon to streams is spawning anadromous salmon. This study examines how streamwater concentrations of DOC are influenced by 1) catchments soils and vegetation, particularly wetland extent and 2) the presence or absence of anadromous fish. Our goal is to characterize the quantity and quality of different DOM sources and to develop an understanding of how these sources influence seasonal trends in streamwater DOM in coastal freshwater systems in southeast Alaska. Surface water and well samples were collected on two contrasting streams near Juneau, Alaska: Peterson Creek, a brownwater, high-carbon stream in a wetland-dominated catchment and McGinnis Creek, a clearwater stream draining upland spruce forest and alpine tundra. Both streams have runs of pink, coho, and chum salmon from July-September. Streamwater DOC concentrations on Peterson Creek averaged 5-6 mg C L-1 during the early summer and increased to 8-12 mg C L-1 during late July and August. Streamwater DOC concentrations on McGinnis Creek were typically less than 1 mg C L-1 during the early summer but increased dramatically to 4-9 mg C L-1 during spates in August. Well samples collected upslope from the streamwater sampling sites on Peterson and McGinnis Creeks had a similar range in DOC concentrations (10-40 mg C L-1), however the wells on McGinnis Creek showed much higher seasonal variability. Our initial results suggest that the seasonal increase in DOC in both streams is primarily associated with the flushing of soluble organic carbon from catchment soils by late summer rains. However, leaching of DOC from salmon carcasses may

  6. The new July meteor shower

    NASA Astrophysics Data System (ADS)

    Zoladek, Przemyslaw; Wisniewski, Mariusz

    2012-12-01

    A new meteor stream was found after an activity outburst observed on 2005 July 15. The radiant was located five degrees west of the possible early Perseid radiant, close to the star Zeta Cassiopeiae. Numerous bright meteors and fireballs were observed during this maximum. Analysis of the IMO Video Database and the SonotaCo orbital database revealed an annual stream which is active just before the appearance of the first Perseids, with a clearly visible maximum at solar longitude 113°1. Activity of the stream was estimated as two times higher than activity of the Alpha Capricornids at the same time. The activity period extends from July 12 to 17, during maximum the radiant is visible at coordinates alpha = 5°9, delta = +50°5, and observed meteors are fast, with Vg = 57.4 km/s. The shower was reported to the IAU Meteor Data Center and recognized as a new discovery. According to IAU nomenclature the new stream should be named the Zeta Cassiopeiids (ZCS). %z Arlt R. (1992). WGN, Journal of the IMO, 20:2, 62-69. Drummond J. D. (1981). Icarus, 45, 545-553. Kiraga M. and Olech A. (2001). In Arlt R., Triglav M., and Trayner C., editors, Proceedings of the International Meteor Conference, Pucioasa, Romania, 21-24 September 2000, pages 45-51. IMO. Molau S. (2007). In Bettonvil F. and Kac J., editors, Proceedings of the International Meteor Conference, Roden, The Netherlands, 14-17 September 2006, pages 38-55. IMO. Molau S. and Rendtel J. (2009). WGN, Journal of the IMO, 37:4, 98-121. Olech A., Zoladek P., Wisniewski M., Krasnowski M., Kwinta M., Fajfer T., Fietkiewicz K., Dorosz D., Kowalski L., Olejnik J., Mularczyk K., and Zloczewski K. (2006). In Bastiaens L., Verbert J., Wislez J.-M., and Verbeeck C., editors, Proceedings of the International Meteor Conference, Oostmalle, Belgium, 15-18 September 2005, pages 53-62. IMO. Poleski R. and Szaruga K. (2006). In Bastiaens L., Verbert J., Wislez J.-M., and Verbeeck C., editors, Proceedings of the International Meteor

  7. A seepage investigation of an area at and near Oak Ridge National Laboratory, Oak Ridge, Tennessee, March through August 1993

    USGS Publications Warehouse

    Johnson, G.C.

    1996-01-01

    A seepage investigation was conducted of an area surrounding the Oak Ridge National Laboratory from March through August 1993. The project was divided into three phases: a reconnaissance to inventory and map seeps, springs, and stream-measurement sites; a high base flow seepage investigation; and a low base flow seepage investigation. The reconnaissance consisted of following each tributary to its source to inventory each site where water was issuing from the ground. Stream- measurement sites were also located along stream reaches at 500-foot intervals. A total of 822 sites were identified. A global positioning system was used to locate 483 sites to within 3- to 5-meter accuracy. The high base flow seepage investigation was conducted from April 29 through May 3, 1993, and from May 7 through May 10, 1993. During the high base flow seepage investigation, sites identified during the reconnaissance were revisited. At almost all sites with flowing water, discharge, pH, specific conductance, and temperature were recorded. Two hundred and fourteen sites were dry. The low base flow seepage investigation was conducted from August 8 through August 10, 1993, and consisted of revisiting the seeps and springs that were flowing during the high base flow seepage investigation. Stream- measurement sites were not revisited. One hundred and forty-one sites were dry.

  8. Atrazine concentrations in stream water and streambed sediment pore water in the St. Joseph and Galien River basins, Michigan and Indiana, May 2001-September 2003

    USGS Publications Warehouse

    Duris, Joseph W.; Reeves, Howard W.; Kiesler, James L.

    2005-01-01

    The U.S. Geological Survey (USGS) sampled multiple stream sites across the St. Joseph and Galien River Basins to detect and quantify the herbicide atrazine using a field enzyme-linked immunosorbent assay (ELISA) triazine test. In May 2001, July 2001, April 2002, August 2002, August 2003 and September 2003, composite samples were collected across streams at USGS streamflow-gaging stations. Concentrations and instantaneous loading for atrazine sampled in stream water throughout the St. Joseph River and Galien River Basins in Michigan and Indiana ranged from nondetection (< 0.05 part per billion (ppb)) with an associated load less than 0.001 kilogram per day (kg/d) to 6 ppb and a maximum load of 10 kg/d. Atrazine concentrations were highest in May 2001 just after the planting season. The lowest concentration was found in April 2002 just before planting. Atrazine concentrations in streambed-sediment pore water were not spatially connected with atrazine concentrations in stream-water samples. This study showed that atrazine concentrations were elevated from May to July in the St. Joseph and Galien River Basins. At many sites, concentrations exceeded the level that has been shown to feminize frog populations (0.2 ppb). There were 8 sites where concentrations exceeded 0.2 ppb atrazine in May 2001 and July 2001.

  9. Recording and analyzing the July 2 cascading outage

    SciTech Connect

    Taylor, C.W.; Erickson, D.C.

    1997-01-01

    On July 2, 1996, a short circuit on a 345-kV line in Wyoming started a chain of events leading to a breakup of the western North America power system. Five islands formed with controlled and uncontrolled load shedding, uncontrolled generation tripping, and with a blackout in southern Idaho. The western power system is operated by power companies belonging to the Western Systems Coordinating Council (WSCC), which had a peak 1996 summer load of around 118,000 MW. July 2 was the third and, until the August 10 large-scale power failure, the most disruptive of a series of western system breakups. The first was caused by the January 17, 1994, Northridge California earthquake. The second breakup occurred in the early morning hours of December 14, 1994, and, like July 2, originated in southern Idaho and Wyoming. Modern computer and communication technologies greatly facilitated dissemination of information, analysis, report writing, and event simulation for the July 2 cascading outage. This article analyzes the breakup, relying heavily on recordings from BPA`s Portable Power System Monitors (PPSM), which are installed at key locations and serve as primary components of a wide-area measurement system (WAMS) project initiated by BPA.

  10. A Fish-Based Index of Biotic Integrity for the Assessment of Streams Located in a Sugarcane-Dominated Landscape in Southeastern Brazil

    NASA Astrophysics Data System (ADS)

    dos Santos, Fernanda Bastos; Esteves, Katharina Eichbaum

    2015-08-01

    A multimetric, fish-based Index of Biotic Integrity (IBI) was developed and tested to assess the ecological status of streams with different riparian conditions in the Piracicaba River Basin. Nine streams with three categories of riparian zone preservation were selected: native forest (NF) with preserved forest, secondary forest (SF) with forest in an advanced state of regeneration and surrounded by sugarcane plantations, and sugarcane (SC) without riparian vegetation and surrounded by SC crops. A continuous scoring system was employed, and candidate metrics were tested for range, responsiveness, and redundancy, resulting in the selection of eight metrics to compose the index. The final IBI score was positively correlated with an Environmental Index both in the dry (Spearman's rho = 0.76; P = 0.01) and rainy seasons (Spearman's rho = 0.66; P = 0.04), suggesting that this IBI is a suitable tool for the assessment of the biological conditions of these streams. The highest IBI values were observed in the rainy season at the NF and SF sites, with significant differences between the NF and SC sites (Kruskal-Wallis test: P = 0.03). The results indicated some variability in the biological integrity at SF and SC sites, suggesting a relationship with the intensity of the management of this crop. Patterns were consistent with other studies that have shown the effects of agriculture on the environmental quality of streams, which indicate the importance of the riparian zone to the maintenance of ecosystem integrity and supports the use of the IBI for biological monitoring in similar regions.

  11. A Fish-Based Index of Biotic Integrity for the Assessment of Streams Located in a Sugarcane-Dominated Landscape in Southeastern Brazil.

    PubMed

    dos Santos, Fernanda Bastos; Esteves, Katharina Eichbaum

    2015-08-01

    A multimetric, fish-based Index of Biotic Integrity (IBI) was developed and tested to assess the ecological status of streams with different riparian conditions in the Piracicaba River Basin. Nine streams with three categories of riparian zone preservation were selected: native forest (NF) with preserved forest, secondary forest (SF) with forest in an advanced state of regeneration and surrounded by sugarcane plantations, and sugarcane (SC) without riparian vegetation and surrounded by SC crops. A continuous scoring system was employed, and candidate metrics were tested for range, responsiveness, and redundancy, resulting in the selection of eight metrics to compose the index. The final IBI score was positively correlated with an Environmental Index both in the dry (Spearman's rho = 0.76; P = 0.01) and rainy seasons (Spearman's rho = 0.66; P = 0.04), suggesting that this IBI is a suitable tool for the assessment of the biological conditions of these streams. The highest IBI values were observed in the rainy season at the NF and SF sites, with significant differences between the NF and SC sites (Kruskal-Wallis test: P = 0.03). The results indicated some variability in the biological integrity at SF and SC sites, suggesting a relationship with the intensity of the management of this crop. Patterns were consistent with other studies that have shown the effects of agriculture on the environmental quality of streams, which indicate the importance of the riparian zone to the maintenance of ecosystem integrity and supports the use of the IBI for biological monitoring in similar regions.

  12. Simulating the effect of climate change on stream temperature in the Trout Lake Watershed, Wisconsin

    USGS Publications Warehouse

    Selbig, William R.

    2015-01-01

    The potential for increases in stream temperature across many spatial and temporal scales as a result of climate change can pose a difficult challenge for environmental managers, especially when addressing thermal requirements for sensitive aquatic species. This study evaluates simulated changes to the thermal regime of three northern Wisconsin streams in response to a projected changing climate using a modeling framework and considers implications of thermal stresses to the fish community. The Stream Network Temperature Model (SNTEMP) was used in combination with a coupled groundwater and surface water flow model to assess forecasts in climate from six global circulation models and three emission scenarios. Model results suggest that annual average stream temperature will steadily increase approximately 1.1 to 3.2 °C (varying by stream) by the year 2100 with differences in magnitude between emission scenarios. Daily mean stream temperature during the months of July and August, a period when cold-water fish communities are most sensitive, showed excursions from optimal temperatures with increased frequency compared to current conditions. Projections of daily mean stream temperature, in some cases, were no longer in the range necessary to sustain a cold water fishery.

  13. Simulating the effect of climate change on stream temperature in the Trout Lake Watershed, Wisconsin.

    PubMed

    Selbig, William R

    2015-07-15

    The potential for increases in stream temperature across many spatial and temporal scales as a result of climate change can pose a difficult challenge for environmental managers, especially when addressing thermal requirements for sensitive aquatic species. This study evaluates simulated changes to the thermal regime of three northern Wisconsin streams in response to a projected changing climate using a modeling framework and considers implications of thermal stresses to the fish community. The Stream Network Temperature Model (SNTEMP) was used in combination with a coupled groundwater and surface water flow model to assess forecasts in climate from six global circulation models and three emission scenarios. Model results suggest that annual average stream temperature will steadily increase approximately 1.1 to 3.2°C (varying by stream) by the year 2100 with differences in magnitude between emission scenarios. Daily mean stream temperature during the months of July and August, a period when cold-water fish communities are most sensitive, showed excursions from optimal temperatures with increased frequency compared to current conditions. Projections of daily mean stream temperature, in some cases, were no longer in the range necessary to sustain a cold water fishery.

  14. What's Happening in August?

    ERIC Educational Resources Information Center

    Toro, Leonor; And Others

    Designed as a teacher resource, the booklet contains nine short lessons related to events in United States history that are remembered in August: the birthday of Francis Scott Key, composer of the national anthem (August 1); the first United States census (August 1); the birthday of Herbert Hoover, 31st President (August 2); the birthday of Julian…

  15. What's Happening in August?

    ERIC Educational Resources Information Center

    Toro, Leonor; And Others

    Designed as a teacher resource, the booklet contains nine short lessons related to events in United States history that are remembered in August: the birthday of Francis Scott Key, composer of the national anthem (August 1); the first United States census (August 1); the birthday of Herbert Hoover, 31st President (August 2); the birthday of Julian…

  16. Spatial statistical network models for stream and river temperature in New England, USA

    NASA Astrophysics Data System (ADS)

    Detenbeck, Naomi E.; Morrison, Alisa C.; Abele, Ralph W.; Kopp, Darin A.

    2016-08-01

    Watershed managers are challenged by the need for predictive temperature models with sufficient accuracy and geographic breadth for practical use. We described thermal regimes of New England rivers and streams based on a reduced set of metrics for the May-September growing season (July or August median temperature, diurnal rate of change, and magnitude and timing of growing season maximum) chosen through principal component analysis of 78 candidate metrics. We then developed and assessed spatial statistical models for each of these metrics, incorporating spatial autocorrelation based on both distance along the flow network and Euclidean distance between points. Calculation of spatial autocorrelation based on travel or retention time in place of network distance yielded tighter-fitting Torgegrams with less scatter but did not improve overall model prediction accuracy. We predicted monthly median July or August stream temperatures as a function of median air temperature, estimated urban heat island effect, shaded solar radiation, main channel slope, watershed storage (percent lake and wetland area), percent coarse-grained surficial deposits, and presence or maximum depth of a lake immediately upstream, with an overall root-mean-square prediction error of 1.4 and 1.5°C, respectively. Growing season maximum water temperature varied as a function of air temperature, local channel slope, shaded August solar radiation, imperviousness, and watershed storage. Predictive models for July or August daily range, maximum daily rate of change, and timing of growing season maximum were statistically significant but explained a much lower proportion of variance than the above models (5-14% of total).

  17. 18 | August | 2014 | ISS On-Orbit Status Report

    NASA Website

    Posted on August 18, 2014 at 6:01 pm by HQ. ... August 2016; July 2016; June 2016; May 2016; April 2016; March 2016; February 2016; January 2016; ...

  18. July | 2016 | ISS On-Orbit Status Report

    NASA Website

    Monday, 08/01: Airway Monitoring Airlock ops, SPHERES, ... August 2016; July 2016; June 2016; May 2016; April 2016; March 2016; February 2016; January ...

  19. JPL-20170701-WHATSUf-0001-What's Up July 2017

    NASA Image and Video Library

    2017-07-01

    The monthly series for amateur astronomers features information about August 2017's total solar eclipse, the phases of Earth's Moon, and two July meteor showers, the Delta Aquarids and the Alpha Capricornids.

  20. Streamflow gain/loss in the Republican River basin, Nebraska, July 1975

    USGS Publications Warehouse

    Johnson, Michaela R.; Stanton, Jennifer S.; Cornwall, James F.; Landon, Matthew K.

    2002-01-01

    This arc and point data set contains streamflow-measurement sites and reaches indicating streamflow gain or loss under base-flow conditions along Republican River tributaries in Dundy and Chase Counties, Nebraska during July 14 to 18, 1975 (U.S. Geological Survey, 1976). The streamflow measurements were made to obtain data on ground-water/surface-water interaction. Flow was observed visually to be zero, was measured, or was estimated at 55 sites. Tributaries were followed upstream until the first road crossing where zero flow was encountered. For selected streams, points of zero flow upstream of the first zero flow site also were checked. Streamflow gain or loss for each stream reach was calculated by subtracting the streamflow values measured at the upstream end of the reach and values for contributing tributaries from the downstream value. The data obtained reflected base-flow conditions suitable for estimating streamflow gains and losses for stream reaches between sites. This digital data set was created by manually plotting locations of streamflow measurements. These points were used to designate stream-reach segments to calculate gain/loss per river mile. Reach segments were created by manually splitting the lines from a 1:250,000 hydrography data set (Soenksen and others, 1999) at every location where the streams were measured. Each stream-reach segment between streamflow-measurement sites was assigned a unique reach number. All other lines in the hydrography data set without reach numbers were omitted. This data set was created to archive the calculated streamflow gains and losses of tributary streams to the Republican River in Dundy and Chase Counties, Nebraska, in July 1975, and make the data available for use with geographic information systems (GIS). If measurement sites are used separately from reaches, the maximum scale of 1:100,000 should not be exceeded. When used in conjunction with the reach segments, the maximum scale should not exceed 1:250,000.

  1. Pasture size effects on the ability of off-stream water or restricted stream access to alter the spatial/temporal distribution of grazing beef cows.

    PubMed

    Bisinger, J J; Russell, J R; Morrical, D G; Isenhart, T M

    2014-08-01

    For 2 grazing seasons, effects of pasture size, stream access, and off-stream water on cow distribution relative to a stream were evaluated in six 12.1-ha cool-season grass pastures. Two pasture sizes (small [4.0 ha] and large [12.1 ha]) with 3 management treatments (unrestricted stream access without off-stream water [U], unrestricted stream access with off-stream water [UW], and stream access restricted to a stabilized stream crossing [R]) were alternated between pasture sizes every 2 wk for 5 consecutive 4-wk intervals in each grazing season. Small and large pastures were stocked with 5 and 15 August-calving cows from mid May through mid October. At 10-min intervals, cow location was determined with Global Positioning System collars fitted on 2 to 3 cows in each pasture and identified when observed in the stream (0-10 m from the stream) or riparian (0-33 m from the stream) zones and ambient temperature was recorded with on-site weather stations. Over all intervals, cows were observed more (P ≤ 0.01) frequently in the stream and riparian zones of small than large pastures regardless of management treatment. Cows in R pastures had 24 and 8% less (P < 0.01) observations in the stream and riparian zones than U or UW pastures regardless of pasture size. Off-stream water had little effect on the presence of cows in or near pasture streams regardless of pasture size. In 2011, the probability of cow presence in the stream and riparian zones increased at greater (P < 0.04) rates as ambient temperature increased in U and UW pastures than in 2010. As ambient temperature increased, the probability of cow presence in the stream and riparian zones increased at greater (P < 0.01) rates in small than large pastures. Across pasture sizes, the probability of cow presence in the stream and riparian zone increased less (P < 0.01) with increasing ambient temperatures in R than U and UW pastures. Rates of increase in the probability of cow presence in shade (within 10 m of tree

  2. Integrated dry NO{sub x}/SO{sub 2} emissions control system sodium-based dry sorbent injection test report. Test period: August 4, 1993--July 29, 1995

    SciTech Connect

    Smith, R.A.; Shimoto, G.H.; Muzio, L.J.; Hunt, T.

    1997-04-01

    The project goal is to demonstrate up to 70% reductions in NOx and SO{sub 2} emissions through the integration of: (1) down-fired low-NOx burners with overfire air; (2) Selective Non-Catalytic Reduction (SNCR) for additional NOx removal; and (3) dry sorbent injection and duct humidification for SO{sub 2} removal. This report documents the sixth phase of the test program, where the performance of dry sorbent injection with sodium compounds was evaluated as a SO{sub 2} removal technique. Dry sorbent injection was performed in-duct downstream of the air heater (ahead of the fabric filter), as well as at a higher temperature location between the economizer and air heater. Two sodium compounds were evaluated during this phase of testing: sodium sesquicarbonate and sodium bicarbonate. In-duct sodium injection with low levels of humidification was also investigated. This sixth test phase was primarily focused on a parametric investigation of sorbent type and feed rate, although boiler load and sorbent preparation parameters were also varied.

  3. Response of Stream Chemistry During Base Flow to Gradients of Urbanization in Selected Locations Across the Conterminous United States, 2002-04

    USGS Publications Warehouse

    Sprague, Lori A.; Harned, Douglas A.; Hall, David W.; Nowell, Lisa H.; Bauch, Nancy J.; Richards, Kevin D.

    2007-01-01

    During 2002-2004, the U.S. Geological Survey's National Water-Quality Assessment Program conducted a study to determine the effects of urbanization on stream water quality and aquatic communities in six environmentally heterogeneous areas of the conterminous United States--Atlanta, Georgia; Raleigh-Durham, North Carolina; Milwaukee-Green Bay, Wisconsin; Dallas-Fort Worth, Texas; Denver, Colorado; and Portland, Oregon. This report compares and contrasts the response of stream chemistry during base flow to urbanization in different environmental settings and examines the relation between the exceedance of water-quality benchmarks and the level of urbanization in these areas. Chemical characteristics studied included concentrations of nutrients, dissolved pesticides, suspended sediment, sulfate, and chloride in base flow. In three study areas where the background land cover in minimally urbanized basins was predominantly forested (Atlanta, Raleigh-Durham, and Portland), urban development was associated with increased concentrations of nitrogen and total herbicides in streams. In Portland, there was evidence of mixed agricultural and urban influences at sites with 20 to 50 percent urban land cover. In two study areas where agriculture was the predominant background land cover (Milwaukee-Green Bay and Dallas-Fort Worth), concentrations of nitrogen and herbicides were flat or decreasing as urbanization increased. In Denver, which had predominantly shrub/grass as background land cover, nitrogen concentrations were only weakly related to urbanization, and total herbicide concentrations did not show any clear pattern relative to land cover - perhaps because of extensive water management in the study area. In contrast, total insecticide concentrations increased with increasing urbanization in all six study areas, likely due to high use of insecticides in urban applications and, for some study areas, the proximity of urban land cover to the sampling sites. Phosphorus

  4. Determining the Location, Number Density and Temporal Evolution of Streams of Hazardous Near-Earth Objects Using the Magnetic Signatures Produced in Destructive Collisions

    NASA Astrophysics Data System (ADS)

    Lai, H.; Russell, C. T.; Wei, H.; Delzanno, G. L.; Connors, M. G.

    2014-12-01

    Near-Earth objects (NEOs) of tens of meters in diameter are difficult to detect by optical methods from the Earth but they result in the most damage per year. Many of these bodies are produced in non-destructive collisions with larger well-characterized NEOs. After generation, the debris spreads forward and backward in a cocoon around the orbit of the parent body. Thereafter, scattering will occur due to gravitational perturbations when the debris stream passes near a planet even when the parent body has no such close approaches. Therefore "safe" NEOs which have no close encounters to the Earth for thousands of years may be accompanied by potentially hazardous co-orbiting debris. We have developed a technique to identify co-orbiting debris by detecting the magnetic signature produced when some of the debris suffers destructive collisions with meteoroids, which are numerous and can be as small as tens of centimeters in diameter. Clouds of nanoscale dust/gas particles released in such collisions can interact coherently with the solar wind electromagnetically. The resultant magnetic perturbations are readily identified when they pass spacecraft equipped with magnetometers. We can use such observations to obtain the spatial and size distribution as well as temporal variation of the debris streams. A test of this technique has been performed and debris streams both leading and trailing asteroid 138175 have been identified. There is a finite spread across the original orbit and most of the co-orbitals were tens of meters in diameter before the disruptive collisions. We estimate that there were tens of thousands of such co-orbiting objects, comprising only 1% of the original mass of the parent asteroid but greatly increasing the impact hazard. A loss of the co-orbitals since 1970s has been inferred from observations with a decay time consistent with that calculated from the existing collisional model [Grün et al., 1985]. Therefore disruptive collisions are the main loss

  5. Glacier-derived August runoff in northwest Montana

    USGS Publications Warehouse

    Clark, Adam; Harper, Joel T.; Fagre, Daniel B.

    2015-01-01

    The second largest concentration of glaciers in the U.S. Rocky Mountains is located in Glacier National Park (GNP), Montana. The total glacier-covered area in this region decreased by ∼35% over the past 50 years, which has raised substantial concern about the loss of the water derived from glaciers during the summer. We used an innovative weather station design to collect in situ measurements on five remote glaciers, which are used to parameterize a regional glacier melt model. This model offered a first-order estimate of the summer meltwater production by glaciers. We find, during the normally dry month of August, glaciers in the region produce approximately 25 × 106 m3 of potential runoff. We then estimated the glacier runoff component in five gaged streams sourced from GNP basins containing glaciers. Glacier-melt contributions range from 5% in a basin only 0.12% glacierized to >90% in a basin 28.5% glacierized. Glacier loss would likely lead to lower discharges and warmer temperatures in streams draining basins >20% glacier-covered. Lower flows could even be expected in streams draining basins as little as 1.4% glacierized if glaciers were to disappear.

  6. The Puzzling Ophiuchus Stream

    NASA Astrophysics Data System (ADS)

    Kohler, Susanna

    2016-01-01

    Dwarf galaxies or globular clusters orbiting the Milky Way can be pulled apart by tidal forces, leaving behind a trail of stars known as a stellar stream. One such trail, the Ophiuchus stream, has posed a serious dynamical puzzle since its discovery. But a recent study has identified four stars that might help resolve this streams mystery.Conflicting TimescalesThe stellar stream Ophiuchus was discovered around our galaxy in 2014. Based on its length, which appears to be 1.6 kpc, we can calculate the time that has passed since its progenitor was disrupted and the stream was created: ~250 Myr. But the stars within it are ~12 Gyr old, and the stream orbits the galaxy with a period of ~350 Myr.Given these numbers, we can assume that Ophiuchuss progenitor completed many orbits of the Milky Way in its lifetime. So why would it only have been disrupted 250 million years ago?Fanning StreamLed by Branimir Sesar (Max Planck Institute for Astronomy), a team of scientists has proposed an idea that might help solve this puzzle. If the Ophiuchus stellar stream is on a chaotic orbit common in triaxial potentials, which the Milky Ways may be then the stream ends can fan out, with stars spreading in position and velocity.The fanned part of the stream, however, would be difficult to detect because of its low surface brightness. As a result, the Ophiuchus stellar stream could actually be longer than originally measured, implying that it was disrupted longer ago than was believed.Search for Fan StarsTo test this idea, Sesar and collaborators performed a search around the ends of the stream, looking for stars thatare of the right type to match the stream,are at the predicted distance of the stream,are located near the stream ends, andhave velocities that match the stream and dont match the background halo stars.Histogram of the heliocentric velocities of the 43 target stars. Six stars have velocities matching the stream velocity. Two of these are located in the main stream; the other

  7. Hydrologic and water-quality conditions in the lower Apalachicola-Chattahoochee-Flint and parts of the Aucilla-Suwannee-Ochlockonee River basins in Georgia and adjacent parts of Florida and Alabama during drought conditions, July 2011

    USGS Publications Warehouse

    Gordon, Debbie W.; Peck, Michael F.; Painter, Jaime A.

    2012-01-01

    As part of the U.S. Department of the Interior sustainable water strategy, WaterSMART, the U.S. Geological Survey documented hydrologic and water-quality conditions in the lower Apalachicola-Chattahoochee-Flint and western and central Aucilla-Suwannee-Ochlockonee River basins in Alabama, Florida, and Georgia during low-flow conditions in July 2011. Moderate-drought conditions prevailed in this area during early 2011 and worsened to exceptional by June, with cumulative rainfall departures from the 1981-2010 climate normals registering deficits ranging from 17 to 27 inches. As a result, groundwater levels and stream discharges measured below median daily levels throughout most of 2011. Water-quality field properties including temperature, dissolved oxygen, specific conductance, and pH were measured at selected surface-water sites. Record-low groundwater levels measured in 12 of 43 surficial aquifer wells and 128 of 312 Upper Floridan aquifer wells during July 2011 underscored the severity of drought conditions in the study area. Most wells recorded groundwater levels below the median daily statistic, and 7 surficial aquifer wells were dry. Groundwater-level measurements taken in July 2011 were used to determine the potentiometric surface of the Upper Floridan aquifer. Groundwater generally flows to the south and toward streams except in reaches where streams discharge to the aquifer. The degree of connection between the Upper Floridan aquifer and streams decreases east of the Flint River where thick overburden hydraulically separates the aquifer from stream interaction. Hydraulic separation of the Upper Floridan aquifer from streams located east of the Flint River is shown by stream-stage altitudes that differ from groundwater levels measured in close proximity to streams. Most streams located in the study area during 2011 exhibited below normal flows (streamflows less than the 25th percentile), substantiating the severity of drought conditions that year. Streamflow

  8. Stream-aquifer relations and the potentiometric surface of the Upper Floridan aquifer in the lower Apalachicola-Chattahoochee-Flint River basin in parts of Georgia, Florida, and Alabama, 1999-2000

    USGS Publications Warehouse

    Mosner, Melinda S.

    2002-01-01

    The Upper Floridan aquifer is the principal source of water for domestic and agricultural use in the lower Apalachicola-Chattahoochee-Flint (ACF) River Basin. Recent drought and increased water use have made understanding surface- and ground-water relations a priority for water-resource managers in the region. From July 1999 through August 2000, less than normal precipitation reduced streamflow in the area to less than 12 percent of average mean-daily streamflow and ground-water levels reached record or near-record lows. Effects of drought on stream-aquifer interactions in the basin were evaluated using baseflow estimation, ground-water seepage calculations, and potentiometric-surface maps. Ground-water discharge to streams, or baseflow, was estimated using three methods: field measurements, hydrograph separation, and linear regression analysis. Results were evaluated seasonally -- October 1999, April 2000, and August 2000 -- and for the period of record at four surface-water stations located on Kinchafoonee, Spring, Muckalee, and Turkey Creeks. Estimates of baseflow also were compared annually; ground-water discharge during the drought years, 1999 - 2000, was compared with ground-water discharge during a relatively wet year, 1994. Hydrograph separation indicated decreased base-flow of streams as the water level in the Upper Floridan aquifer declined. Mean-annual baseflow for Kinchafoonee, Spring, Muckalee, and Turkey Creeks ranged from 36 to 71 percent of total streamflow during the period of record. In 1994 baseflow accounted for only 37 to 56 percent of total streamflow, in 1999 baseflow comprised from 60 to 73 percent of total streamflow, and in 2000 baseflow comprised from 56 to 76 percent of streamflow. The percentage of total streamflow attributed to ground water increased during the drought, whereas other components of streamflow decreased (overland flow, interflow, and channel precipitation). Even though relative ground-water contributions were increased

  9. INEL BNCT research program, July--August 1992

    SciTech Connect

    Venhuizen, J.R.

    1992-10-01

    This report presents summaries for two months of current research of the Idaho National Engineering Laboratory (INEL) Boron Neutron Capture Therapy (BNCT) Program. Information is presented on development and murine screening experiments of low-density lipoprotein, carboranyl alanine, and liposome boron containing compounds. Pituitary tumor cell culture studies are described. Drug stability, pharmacology and toxicity evaluation of borocaptate sodium (BSH) and boronophenylalanine (BPA) are described. Treatment protocol development via the large animal (canine) model studies and physiological response evaluation in rats are discussed. Supporting technology development and technical support activities for boron drug biochemistry and purity, analytical and measurement dosimetry, and noninvasive boron quantification activities are included for the current time period. Current publications for the two months are listed.

  10. Science and technology review, July-August 1998 issue

    SciTech Connect

    Smart, J

    1998-07-01

    On the occasion of Edward Teller's 90th birthday, S&TR has the pleasure of honoring Lawrence Livermore's co-founder and most influential scientist. Teller is known for his inventive work in physics, his concepts leading to thermonuclear explosions, and his strong stands on such issues as science education, the nation's strategic defense, the needs for science in the future, and sharing scientific information. The articles in this issue also show him, as always, tirelessly moving forward with his new and changing interests.

  11. Environmental Regulatory Update Table July/August 1993

    SciTech Connect

    Houlberg, L.M.; Hawkins, G.T.; Salk, M.S.; Danford, G.S.; Lewis, E.B.

    1993-09-01

    The Environmental Regulatory Update Table provides information on regulatory initiatives of interest to DOE operations and contractor staff with environmental management responsibilities. The table is updated bi-monthly with information from the Federal Register and other sources, including direct contact with regulatory agencies. Each table entry provides a chronological record of the rulemaking process for that initiative with an abstract and a projection of further action.

  12. Science and Technology Review July/August 2002

    SciTech Connect

    Budil, K.

    2002-07-01

    This Science and Technology Review has the following stories: (1) Integration is Key to Understanding Climate Change; (2) The Outlook is for Warming, with Measurable Local Effects--Livermore climate models are zeroing in on the effects of human activities on global climate, representing them in simulations with the finest resolution ever; (2) How Metals Fail--experiments are guiding the development of codes that predict how metals react to high explosives; (4) Converting Data to Decisions--a new statistical method executed on supercomputers is bridging the gap between complex data and usable information; (5) Knowing the Enemy, Anticipating the Threat--The Laboratory's charter to counter the nuclear threat has evolved over the years and now includes intelligence analysis and technology to understand and counter biological and chemical threats.

  13. Children's Voice. Volume 15, Number 4, July/August 2006

    ERIC Educational Resources Information Center

    Boehem, Steven S., Ed.

    2006-01-01

    The Child Welfare League of America is the nation's oldest and largest membership-based child welfare organization committed to engaging people everywhere in promoting the well-being of children, youth, and their families and protecting every child from harm. By publishing a diverse range of views on a wide array of topics, "Children's Voice"…

  14. Science and Technology Review July-August 1999

    SciTech Connect

    Eimerl, D

    1999-07-01

    This issue covers the following topics: (1) Laboratory in the News; (2)Mike Anastasio's commentary on ''Fusion Ignition as an Integrated Test of Stockpile Stewardship; (3) ''On Target: Designing for Ignition''--researchers are designing and fabricating the exacting targets needed for laser fusion experimentation at the National Ignition Facility, now under construction; (4) ''A New View of the Universe''--Livermore's laser guide star and adaptive optics systems are opening up the skies for astronomers to take a better look; (5) Research Highlights of ''Quantum Molecular Virtual Laboratory'' and ''AAA in the Sky for Satellites; and (6) Patents, Awards and Abstracts.

  15. Science and Technology Review, July/August 2012

    SciTech Connect

    Poyneer, L A

    2012-05-30

    This month's issue has the following articles: (1) Energetic Materials Research Finds an Enduring Home and Mission - Commentary by Bruce T. Goodwin; (2) A Home for Energetic Materials and Their Experts - The Energetic Materials Center has become the National Nuclear Security Administration's go-to facility for high explosives formulation, testing, and expertise; (3) A Spectra-Tacular Sight - Scientists use spectrographic techniques and a high-powered telescope to study the atmospheric composition of exoplanets; (4) Seismic Data Pinpoint Fractures for Geothermal Energy - Livermore researchers are developing advanced microseismic analysis techniques to understand what happens beneath Earth's surface, where hot rock can provide an energy source; and (5) Employees Keep Up with the Times - The Laboratory's Education Assistance Program helps its workforce stay productive, skilled, and dynamic.

  16. Army Logistician. Volume 36, Issue 4, July-August 2004

    DTIC Science & Technology

    2004-08-01

    of all soldiers require some type of prescription medication. During deployments, the prescription policy at mobilization stations calls for deploying...time. To counter this refill problem, mobilization stations began deploying sol- diers with an additional 90 DOS, bringing each sol- dier’s total to... adopted by most units at each major logistics node. Because of movement priorities and the shortage of available transportation assets, transportation

  17. Benson Bertheau Roe, Md, July 7, 1918-August 6, 2012.

    PubMed

    Edmunds, L Henry

    2013-02-01

    "Ben" Roe was the eighth president of The Society of Thoracic Surgeons. He was a fourth-generation native Californian, a hall of fame athlete, a pioneer in the development of cardiac surgery, and a crusading reformer of professional standards, education, and ethics. Educated in both northern California and in Boston, his career reflected the influence of both cultures and his California heritage. Copyright © 2013 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.

  18. Military Review. Volume 80, Number 4, July-August 2000

    DTIC Science & Technology

    2000-08-01

    Panamá De 1972 Reformada Por Los Actos Reformatorios De 1978, Por El Acto Constitucional De 1983 Y Los Actos Legislativos De 1983 Y 2 De 1994, Título XIV...via Internet, for more on the 35-man Grupo Beta Sur and its activities. Jorge Alberto Cornejo, �Aplica México plan para proteger derechos de

  19. Bibliography of Soviet Laser Developments, Number 60, July - August 1982.

    DTIC Science & Technology

    1983-07-15

    174-176. 449. Bukhman, A.B., Ye.M. Dianov, A.Ya. Karasik, V.A. Kozlov, and A.M. Prokhorov (0). Fiber - optic rotation sensor . Radiotekhnika, no. 4...and S.G. Slyusarev (12). Optical ring resonator with plane mirrors and an amplifying medium separated by a diaphragm . Leningradskiy GU. Vestnik, no. 4...Zarkevich, Ye.A., and 0.N. Makeyev (0). Photodetectors and photo- receivers for fiber - optic communication lines. Radiotekhnika, no. 3, 1982, 65-70

  20. Bibliography of Soviet Laser Developments, Number 84, July - August 1986.

    DTIC Science & Technology

    1987-10-01

    Effect of an aperture diaphragm on the signal-to-noise ratio in a single- fiber interferometric sensor . KVEKA, no. 8, 1986, 1675-1679. 380. Langbein...Telenkov, S.A. (MGU). Generation of surface acoustic waves by deformation and thermal mechanisms during optical action on silicon. AKZHA, no. 4, 1986...radiation passing through multimode optical fibers . Lazernyye puchki. Rasprostraneniye v sredakh i upravleniye parametrami. KhaPI. Khabarovsk, 1985

  1. Medical and Health Divisions quarterly report, July, August, September, 1948

    SciTech Connect

    1995-11-01

    This quarterly report describes progress in four programs entitled (1) The Metabolic Properties of Plutonium and Allied Materials, (2) Biological Studies of Radiation Effects, (3) Biological Effects of Radiation from External and Internal Sources and (4) Health Chemistry and Physics. Progress in each program is separately indexed and abstracted for the database.

  2. Bibliography of Soviet Laser Developments, Number 78, July - August 1985.

    DTIC Science & Technology

    1986-12-01

    A F 29 SUSLOV YU F 50 TROSHIN A S 31 S SOLOMAKHO G 1 53 SUTUGIN A T 58 TROYAN YU G 68 SOLONENKO M G 67 SVAXHIN A S 36,80 TSEKHOMSKIY V A 73 SOLOV’YEV...ABEN KH K 60 ARUTYUNOV YE N 76,82 BELYAKOV YU M 10 ABLEKOV V K 40 ARUTYUNYAN E A 34 BELYANKO A YE 34 ABRANOVA A G 74 ARUTYUNYAN E M 27 BELYAYEV V K...AFONIN A V 58 ARUTYUNYAN V YE 67 BER B YA 29 AFONIN D G 13 ASHCHEULOV YU V 16 BEREZDETSKIY T I 60 AGEYEV A N 38 ASHITKOV S 1 65 BEREZHNOY A A 49,60

  3. Energy Information Administration New Releases, July--August 1990

    SciTech Connect

    Jacobus, P.; Springer, I.

    1990-09-01

    New Releases'' is Energy Information Administration's news letter, which reports its activities, publications, and machine-readable data files and modeling programs. For each publication or report, an abstract, subscription price, availability, and other bibliographical information are included. It covers crude oil, natural gas, and natural gas liquids reserves, coal, electricity, nuclear fuel, renewable energy and conservation, and petroleum. Order forms are also provided.

  4. Science and Technology Review July/August 2009

    SciTech Connect

    Bearinger, J P

    2009-06-29

    This month's issue has the following articles: (1) Game-Changing Science in the National Interest - Commentary by Tomas Diaz de la Rubia; (2) Preventing Close Encounters of the Orbiting Kind - The Testbed Environment for Space Situational Awareness is improving capabilities for monitoring and detecting threats to space operations; (3) A CAT Scanner for Nuclear Weapon Components - A new x-ray system images nuclear weapon components in three dimensions, promising unprecedented resolution and clarity; (4) Mass-Producing Positrons - Scientists reveal a new method for yielding a greater density of positrons at a much faster rate inside a laboratory setting; and (5) The Next Generation of Medical Diagnostic Devices - Portable medical diagnostic devices using ultrawideband technology help first responders evaluate injuries in emergency situations and could improve overall health care.

  5. Environmental Regulatory Update Table, July--August 1992

    SciTech Connect

    Houlberg, L.M.; Hawkins, G.T.; Lewis, E.B.; Salk, M.S.

    1992-09-01

    The Environmental Regulatory Update Table provides information on regulatory initiatives of interest to DOE operations and contractor staff with environmental management responsibilities. The table is updated bi-monthly with information from the Federal Register and other sources, including direct contact with regulatory agencies. Each table entry provides a chronological record of the rulemaking process for that initiative with an abstract and a projection of further action.

  6. Army Logistician. Volume 37, Issue 4, July-August 2005

    DTIC Science & Technology

    2005-08-01

    the spinach leaf that naturally harvests energy from biomass. This discov- ery offers logisticians an alternative to the long supply lines...to or near the world’s oceans, where huge sources of sea-based biomass are present in the form of sea kelp and other vegetation. In fact, 40 percent...of all the Earth’s biomass is in the oceans. Being able to harvest One button of antimatter contains 123 times the energy generated by the Space

  7. Science and Technology Review July/August 2010

    SciTech Connect

    Blobaum, K M

    2010-05-27

    This issue has the following articles: (1) Deterrence with a Minimum Nuclear Stockpile - Commentary by Bruce T. Goodwin; (2) Enhancing Confidence in the Nation's Nuclear Stockpile - Livermore experts are participating in a national effort aimed at predicting how nuclear weapon materials and systems will likely change over time; (3) Narrowing Uncertainties - For climate modeling and many other fields, understanding uncertainty, or margin of error, is critical; (4) Insight into a Deadly Disease - Laboratory experiments reveal the pathogenesis of tularemia in host cells, bringing scientists closer to developing a vaccine for this debilitating disease. (5) Return to Rongelap - On the Rongelap Atoll, Livermore scientists are working to minimize radiological exposure for natives now living on or wishing to return to the islands.

  8. Bibliography of Soviet Laser Developments, Number 72, July - August 1984.

    DTIC Science & Technology

    1985-11-01

    1609. 957. Bogdanov, D.D.; Ivanov, G.N.; Kolesov, I.V.; Orlova, O.A.; Rodin, A.M.; Timakov, V.A.; Ter-Akop’yan, G.M. (OIYaI) * The LIDIA -M highly...Rodin, A.M.; Timakov, V.A.; Ter-Akop’yan, G.M.; Chelnokov, L.P. (OIYaI). The LIDIA -M automated system for controlling and measuring mass spectra in a

  9. Dryden Flight Research Highlights; August 2006 - July 2007

    NASA Technical Reports Server (NTRS)

    Wright, David A.

    2007-01-01

    A DVD highlights the research activities of the Dryden Flight Research Center. The video includes coverage of space-based communication, intelligent flight controls, autonomous refueling demonstration, QuietSpike, sonic boom tests, G-III radar pod, X-48B blended wing body, Altair fire mission, Ikhana UAV, STS-117 Atlantis, and SOFIA Telescope research efforts.

  10. Environmental Regulatory Update Table, July--August 1992

    SciTech Connect

    Houlberg, L.M.; Hawkins, G.T.; Lewis, E.B.; Salk, M.S.

    1992-09-01

    The Environmental Regulatory Update Table provides information on regulatory initiatives of interest to DOE operations and contractor staff with environmental management responsibilities. The table is updated bi-monthly with information from the Federal Register and other sources, including direct contact with regulatory agencies. Each table entry provides a chronological record of the rulemaking process for that initiative with an abstract and a projection of further action.

  11. Tributary Reservoir Regulation Activities (August 1994 - July 1995)

    DTIC Science & Technology

    1995-12-01

    Bull Hook Havre , MT Bull Hook Creek October 1955 54 6,500 4. Cedar canyon Rapid City, SO Deadman Gulch September 1959 0.4 123 ... · 5. Chatfield...Missouri River nrUim, MT Sw River nr Vaughn, fiT Missouri River 0 Vlrgelle, MT Missouri River nr Landualcy, MT Milk River 0 Havre , MT Milk River nr Saco... 1944 nr 3,130 24MIIY 1981 8.06 15,900 12 Jun 1970 8.01 9,550 21 Jun 1899 nr 9,840 08Jun 1948 11.77 32,000 01 Jun 1953 17.00 35,000 09 Jun 1964

  12. Science and Technology Review July/August 2006

    SciTech Connect

    Radousky, H B

    2006-05-25

    This month's issue has the following articles: (1) Experiments at the Scale of Simulations--Commentary by Tomas Diaz de la Rubia; (2) A New Realm of Materials Science--Livermore scientists are combining experiment, theory, and simulation to study the response of solids to extreme dynamic stresses at nanometer and subnanosecond scales; (3) Planets and Stars under the Magnifying Glass--An international collaboration involving Laboratory scientists has discovered a planet made of rock or ice orbiting a dim star outside our solar system; and (4) Keeping an Eye on the Prize--A Livermore-IBM team uses a new code and the world's fastest computer to set a performance record for a science application.

  13. Platinum Publications, July 26–August 30, 2017 | Poster

    Cancer.gov

    Platinum Publications are selected from articles by NCI at Frederick scientists published in 42 prestigious science journals. This list represents articles published during the time period shown above, as generated from PubMed. Articles designated as Platinum Highlights are noteworthy articles selected from among the most recently published Platinum Publications.

  14. Science and technology review, July/August 1997

    SciTech Connect

    Upadhye, R.

    1997-08-01

    This month`s issues are entitled Assuring the Safety of Nuclear Power; The Microtechnology Center, When Smaller is Better; Speeding the Gene Hunt: High Speed DNA Sequencing; and Microbial Treatments of High Explosives.

  15. Army Logistician. Volume 39, Issue 4, July-August 2007

    DTIC Science & Technology

    2007-08-01

    authorized to direct the contractor to perform specific work. AMC is the primary client for the LOGCAP con- tractor. AMC’s main responsibility is to be...breaking under otherwise ideal driving conditions to the satisfac - tion of the DOT or the Army’s Transportation Engineer- ing Agency (TEA). However

  16. Energy and technology review, July--August, 1990

    SciTech Connect

    Burnham, A.K.

    1990-01-01

    This report highlights various research programs conducted at the Lab to include: defense systems, laser research, fusion energy, biomedical and environmental sciences, engineering, physics, chemistry, materials science, and computational analysis. It also contains a statement on the state of the Lab and Laboratory Administration. (JEF)

  17. Tutorial Community Report. Progress Report, August 1971-July 1972.

    ERIC Educational Resources Information Center

    COP Bulletin, 1972

    1972-01-01

    The Tutorial Community Project (TCP) is a seven-year effort (1968-1975) designed to establish a model elementary school in the Los Angeles City School System. This document reports the project's accomplishments at Wilshire Crest and Dublin Avenue schools during the first year of the TCP. The main thrust of TCP is to develop a model, self-renewing,…

  18. Army Sustainment. Volume 42, Issue 4, July-August 2010

    DTIC Science & Technology

    2010-08-01

    transmissions, transfers, differentials, radia- tors, generators, windows, brakes , calipers , water pumps, and so forth. Imagine all of those items plus...and tear on both brakes and drivers. Eventually, the distri bution pla toon developed into a movement control team. Working With Humanitarian Aid...Automotive parts were the priority, followed by elec- tronics. Weapon maintenance was a lesser prior ity. The maintenance section focused on brake fluid, oil

  19. INEL BNCT research program, July--August 1992

    SciTech Connect

    Venhuizen, J.R.

    1992-10-01

    This report presents summaries for two months of current research of the Idaho National Engineering Laboratory (INEL) Boron Neutron Capture Therapy (BNCT) Program. Information is presented on development and murine screening experiments of low-density lipoprotein, carboranyl alanine, and liposome boron containing compounds. Pituitary tumor cell culture studies are described. Drug stability, pharmacology and toxicity evaluation of borocaptate sodium (BSH) and boronophenylalanine (BPA) are described. Treatment protocol development via the large animal (canine) model studies and physiological response evaluation in rats are discussed. Supporting technology development and technical support activities for boron drug biochemistry and purity, analytical and measurement dosimetry, and noninvasive boron quantification activities are included for the current time period. Current publications for the two months are listed.

  20. Census in Schools Educator Update, July/August 2009

    ERIC Educational Resources Information Center

    US Census Bureau, 2009

    2009-01-01

    The "Census in Schools Educator Update" is sent to educators and educational organizations periodically to keep them informed about current and upcoming census data and to provide ideas about how to use data in the classroom. This issue of the "Census in Schools Educator Update" newsletter includes the following items: (1) Census in Schools and…

  1. Environmental regulatory update table, July/August 1994

    SciTech Connect

    Houlberg, L.M.; Hawkins, G.T.; Bock, R.E.; Salk, M.S.

    1994-09-01

    The Environmental Regulatory Update Table provides information on regulatory initiatives of interest to DOE operations and contractor staff with environmental management responsibilities. The table is updated bi-monthly with information from the Federal Register and other sources, including direct contact with regulatory agencies. Each table entry provides a chronological record of the rulemaking process for that initiative with an abstract and a projection of further action.

  2. Science and Technology Review July/August 2001

    SciTech Connect

    Quong, A.A.

    2001-07-01

    This issue contains the following articles: (1) ''National Security Is Our Unifying Theme''. (2) ''Annual Certification Takes a Snapshot of Stockpile's Health'' The annual assessment of the stockpile is central to Livermore's mission and vital to national nuclear security. (3) ''Sensing for Danger'' Networked sensors are getting smarter so they can better detect, track, and ward off a variety of threats. (4) ''It's the Pits in the Weapons Stockpile'' Getting old is serious business for nuclear weapon pits. (5) ''Looking into the Shadow World'' New software and better radiography are yielding higher-quality tomographs.

  3. Army Sustainment. Volume 44, Issue 4, July-August 2012

    DTIC Science & Technology

    2012-08-01

    operating in a JIIM environment. By leveraging busi- ness intelligence, digital technology, and social -networking tools in all we do, the Transportation...commercial carrier surface assets so that more military transportation units could be rede - ployed in support of the drawdown. The final way was to turn

  4. Army Sustainment. Volume 47, Issue 4, July-August 2015

    DTIC Science & Technology

    2016-05-17

    discipline—to integrate all business processes both socially and technologically—SCM stands as a concept without complete proof of practice. We...istan was mission command of sustainment operations and rede - ployment, retrograde, and materiel reduction support for all U.S. and coalition forces...Facebook, Google+, and Twitter. Today we are richly en- gaged with an combined audience of over 3,000 followers on social media. That means we are

  5. Energy and Technology Review, July-August 1991

    NASA Astrophysics Data System (ADS)

    Johnson, K. C.

    This issue of 'Energy and Technology Review' gives the annual review of the programs at Lawrence Livermore National Laboratory. This State of the Laboratory issue includes discussions of all major programs: Defense Systems; Laser Research; Magnetic Fusion Energy; Energy and Earth Sciences; Environmental Technology Program; Biomedical and Environmental Science; Engineering; Physics; Chemistry and Materials Science; Computations; and Administrative and Institutional Services. An index is also given of the 1991 achievements with contact names and telephone number.

  6. Military Review. Volume 82, Number 4, July-August 2002

    DTIC Science & Technology

    2002-08-01

    benign approaches to overcoming or as- suaging human weaknesses or personal failure. Michel Foucault , a 20th-century French phi- losopher devoted to...surface, military leadership- organizational dynamics validate his philosophy. Foucault believed that cohesion—the feeling of be- longing—could be...cohesion by similar means. Despite history bearing out the effectiveness of building cohesion organizationally, Foucault says nothing of the intangible

  7. Children's Voice. Volume 17, Number 4, July/August 2008

    ERIC Educational Resources Information Center

    Shenk, Emily, Ed.

    2008-01-01

    The Child Welfare League of America (CWLA) is the nation's oldest and largest membership-based child welfare organization committed to engaging people everywhere in promoting the well-being of children, youth, and their families and protecting every child from harm. By publishing a diverse range of views on a wide array of topics, "Children's…

  8. 2007 Radiation & Climate GRC ( July 29-August 3, 2007)

    SciTech Connect

    William Collins Nancy Ryan Gray

    2008-06-01

    The theme of the fifth Gordon Research Conference on Radiation and Climate is 'Integrating multiscale measurements and models for key climate questions'. The meeting will feature lectures, posters, and discussion regarding these issues. The meeting will focus on insights from new types of satellite and in situ data and from new approaches to modeling processes in the climate system. The program on measurements will highlight syntheses of new satellite data on cloud, aerosols, and chemistry and syntheses of satellite and sub-orbital observations from field programs. The program on modeling will address both the evaluation of cloud-resolving and regional aerosol models using new types of measurements and the evidence for processes and physics missing from global models. The Conference will focus on two key climate questions. First, what factors govern the radiative interactions of clouds and aerosols with regional and global climate? Second, how well do we understand the interaction of radiation with land surfaces and with the cryosphere?

  9. Children's Voice. Volume 16, Number 4, July/August 2007

    ERIC Educational Resources Information Center

    Boehm, Steven S., Ed.

    2007-01-01

    The Child Welfare League of America is the nation's oldest and largest membership-based child welfare organization committed to engaging people everywhere in promoting the well-being of children, youth, and their families and protecting every child from harm. By publishing a diverse range of views on a wide array of topics, "Children's…

  10. Army Sustainment. Volume 43, Issue 4, July-August 2011

    DTIC Science & Technology

    2011-08-01

    and civilians of the Logistics Corps. Why Is the Military a Profession? Much of the initial discussion involving this cam - paign focuses on whether...got there. Think about the entire process, from raw-materials extraction to transformation at a plant or mill, movement of these materials to a manu...facturing plant , assembly of the product’s various components, packaging and further movement to a warehouse or distribution center, delivery to the

  11. Army Logistician. Volume 40, Issue 4, July-August 2008

    DTIC Science & Technology

    2008-08-01

    structure is work- ing pretty well—but we know we didn’t get it exactly right (which we knew would be the case), and a num- ber of refinements are...with less” since the 1930s. Since transforming from the Soviet-era doctrine of heavy units with little mobil- ity to the HBCT format, the interest in...their inside knowledge of culture. They can spot a non-Iraqi instantly through little cues. At other times, this local knowledge holds them back

  12. Studies in iodine metabolism: Progress report, July 1968-July 1969

    SciTech Connect

    Van Middlesworth, L.

    1987-01-01

    This document describes research on iodine metabolism conducted at the University of Tennessee, Memphis between July 1968 and July 1969. The author and his research team prepared autoradiographs of rat thyroids from individuals exposed to Iodine 125 in utero. Additional studies were conducted to determine the effect on hypothalamic lesions on iodide metabolism in rats; to evaluate an iodide-specific electrode for measuring iodide levels in blood or urine; and to study the amount of thyroxine absorption from the intestine. An analysis of bovine and sheep thyroids from eight locations provided additional information on global fallout levels. 21 figs., 2 tabs.

  13. Eventos de Agosto (August Events).

    ERIC Educational Resources Information Center

    Toro, Leonor; Pla, Myrna

    Written in Spanish, this booklet contains brief information on seven August events celebrated by Puerto Ricans: Herbert Hoover's birthdate (August 10); Acta del Seguro Social (Social Security Act, August 14); Julian E. Blanco (August 14), Enmienda 19 Sufragia de la Mujer (Amendment 19, Women's Suffrage, August 26); Benjamin Harrison (August 20);…

  14. Eventos de Agosto (August Events).

    ERIC Educational Resources Information Center

    Toro, Leonor; Pla, Myrna

    Written in Spanish, this booklet contains brief information on seven August events celebrated by Puerto Ricans: Herbert Hoover's birthdate (August 10); Acta del Seguro Social (Social Security Act, August 14); Julian E. Blanco (August 14), Enmienda 19 Sufragia de la Mujer (Amendment 19, Women's Suffrage, August 26); Benjamin Harrison (August 20);…

  15. Streamflow and water-quality properties in the West Fork San Jacinto River Basin and regression models to estimate real-time suspended-sediment and total suspended-solids concentrations and loads in the West Fork San Jacinto River in the vicinity of Conroe, Texas, July 2008-August 2009

    USGS Publications Warehouse

    Bodkin, Lee J.; Oden, Jeannette H.

    2010-01-01

    To better understand the hydrology (streamflow and water quality) of the West Fork San Jacinto River Basin downstream from Lake Conroe near Conroe, Texas, including spatial and temporal variation in suspended-sediment (SS) and total suspended-solids (TSS) concentrations and loads, the U.S. Geological Survey, in cooperation with the Houston-Galveston Area Council and the Texas Commission on Environmental Quality, measured streamflow and collected continuous and discrete water-quality data during July 2008-August 2009 in the West Fork San Jacinto River Basin downstream from Lake Conroe. During July 2008-August 2009, discrete samples were collected and streamflow measurements were made over the range of flow conditions at two streamflow-gaging stations on the West Fork San Jacinto River: West Fork San Jacinto River below Lake Conroe near Conroe, Texas (station 08067650) and West Fork San Jacinto River near Conroe, Texas (station 08068000). In addition to samples collected at these two main monitoring sites, discrete sediment samples were also collected at five additional monitoring sites to help characterize water quality in the West Fork San Jacinto River Basin. Discrete samples were collected semimonthly, regardless of flow conditions, and during periods of high flow resulting from storms or releases from Lake Conroe. Because the period of data collection was relatively short (14 months) and low flow was prevalent during much of the study, relatively few samples collected were representative of the middle and upper ranges of historical daily mean streamflows. The largest streamflows tended to occur in response to large rainfall events and generally were associated with the largest SS and TSS concentrations. The maximum SS and TSS concentrations at station 08067650 (180 and 133 milligrams per liter [mg/L], respectively) were on April 19, 2009, when the instantaneous streamflow was the third largest associated with a discrete sample at the station. SS concentrations

  16. Biological monitoring of Upper Three Runs Creek, Savannah River Plant, Aiken County, South Carolina. Final report on macroinvertebrate stream assessments for F/H area ETF effluent discharge, July 1987--February 1990

    SciTech Connect

    Specht, W.L.

    1991-10-01

    In anticipation of the fall 1988 start up of effluent discharges into Upper Three Creek by the F/H Area Effluent Treatment Facility of the Savannah River Site, Aiken, SC, a two and one half year biological study was initiated in June 1987. Upper Three Runs Creek is an intensively studied fourth order stream known for its high species richness. Designed to assess the potential impact of F?H area effluent on the creek, the study includes qualitative and quantitative macroinvertebrate stream surveys at five sites, chronic toxicity testing of the effluent, water chemistry and bioaccumulation analysis. This final report presents the results of both pre-operational and post-operational qualitative and quantitative (artificial substrate) macroinvertebrate studies. Six quantitative and three qualitative studies were conducted prior to the initial release of the F/H ETF effluent and five quantitative and two qualitative studies were conducted post-operationally.

  17. Nationwide data confirms absence of 'July phenomenon' in obstetrics: it's safe to deliver in July.

    PubMed

    Ford, A A; Bateman, B T; Simpson, L L; Ratan, R B

    2007-02-01

    To determine whether operator-dependent obstetric complications occur at higher rates in July at teaching hospitals using a large, nationwide sample of deliveries. Data for this study were obtained from an administrative dataset, the Nationwide Inpatient Sample, for the years 1998 to 2002. Singleton deliveries and singleton livebirth admissions among Medicaid patients at teaching hospitals with OB/GYN residents working on the Labor and Delivery ward were identified. Outcomes for various complications for these patients in the month of July were compared to those occurring in the months from August to June. The 26,546 women in our cohort who delivered in July were compared to the 272,584 women delivering during August to June. There were no statistically significant differences in the rates of cesarean delivery, urethral/bladder injury, third or fourth degree lacerations, wound complications, postpartum hemorrhage, transfusion, shoulder dystocia, chorioamnionitis or anesthesia-related complications. The 26,175 singleton livebirth admissions in July were compared to 266,158 such admissions in August to June. There were no statistically significant differences in the rates of brachial plexus injury (0.2 vs 0.2%, P=0.824) or birth asphyxia (0.1 vs 0.1%, P=0.643). This study shows no increased rate of operator-dependent complications of delivery at teaching hospitals nationwide in the month of July.

  18. Impact of Flood Spates on Denitrifying Bacteria in Low Order Streams

    NASA Astrophysics Data System (ADS)

    Herrman, K.; Stokdyk, J.

    2011-12-01

    The impact of flood events on channel design, macroinvertebrates, and periphyton in stream ecosystems has been well studied. Little is known, however, about how flood spates affect microorganisms found in stream sediments. Denitrifying bacteria are beneficial organisms because they convert nitrates to nitrogen gas. Providing data that describes the impact of flood events on denitrifiers and the time required after the disturbance for the bacteria to recover are crucial in understanding nitrogen dynamics in stream ecosystems. Three low order streams in central Wisconsin, USA are being monitored during several flood spates during July and August of 2011. Discharge is being continuously monitored in all three streams and sediments are being collected before and after several flood events for laboratory assays. Specifically, sediments are being processed for denitrification rates using the acetylene inhibition technique, microbial biomass carbon using chloroform fumigation, and the quantification of denitrifying bacteria (i.e., nirS, nirK, and nosZ genes) using real-time quantitative PCR. Preliminary data show that within 36 hours after a 90 mm rain event, microbial biomass carbon in all three streams (580 μg C g sediment-1) significantly increased (F1,23 = 650 ± 140; p < 0.001) compared to microbial biomass during baseflow (200 ± 27 μg C g sediment-1). These initial results suggest that contrary to our expectations flood events enhance bacteria in stream sediments. Denitrification rates and quantification of denitrifying bacteria still need to be analyzed to determine if these specific bacteria follow a similar pattern or if the bacterial recolonization of stream sediments follows a unique pattern.

  19. Rainfall Generated Debris flows on Mount Shasta: July 21, 2015

    NASA Astrophysics Data System (ADS)

    Mikulovsky, R. P.; De La Fuente, J. A.; Courtney, A.; Bachmann, S.; Rodriguez, H.; Rust, B.; Schneider, F.; Veich, D.

    2015-12-01

    Convective storms on the evening of July 21, 2015 generated a number of debris flows on the SE flank of Mount Shasta Volcano, Shasta-Trinity National Forest. Widespread rilling, gullying and sheet erosion occurred throughout the affected area. These storms damaged roads by scouring drainage ditches, blocking culverts, eroding road prisms, and depositing debris where streams emerged from their incised channels and flowed over their alluvial fans. Effects were limited geographically to a narrow band about 6 miles wide trending in a northeasterly direction. Debris flows were identified at Pilgrim Creek and nearby channels, and Mud Creek appears to have experienced sediment laden flows rather than debris flows. Doppler radar data reveal that the storm cells remained nearly stationary for two hours before moving in a northeasterly direction. Debris flows triggered by convective storms occur often at Mount Shasta, with a similar event recorded in 2003 and a larger one in 1935, which also involved glacial melt. The 1935 debris flow at Whitney Creek buried Highway 97 north of Weed, CA, and took out the railroad above the highway. In September, 2014, a large debris flow occurred in Mud Creek, but it was associated solely with glacial melt and was not accompanied by rain. The 2014 event at Mud Creek filled the channel and parts of the floodplain with debris. This debris was in turn reworked and eroded by sediment laden flows on July 21, 2015. This study was initiated in August, 2015, and began with field inventories to identify storm effects. Lidar data will be used to identify possible avulsion points that could result in unexpected flash flooding outside of the main Mud Creek channel and on adjacent streams. The results of this study will provide critical information that can be used to assess flash flood risk and better understand how to manage those risks. Finally, some conclusions may be drawn on the kinds of warning systems that may be appropriate for possible flash

  20. Geochemical Data for Upper Mineral Creek, Colorado, Under Existing Ambient Conditions and During an Experimental pH Modification, August 2005

    USGS Publications Warehouse

    Runkel, Robert L.; Kimball, Briant A.; Steiger, Judy I.; Walton-Day, Katherine

    2009-01-01

    Mineral Creek, an acid mine drainage stream in south-western Colorado, was the subject of a water-quality study that employed a paired synoptic approach. Under the paired synoptic approach, two synoptic sampling campaigns were conducted on the same study reach. The initial synoptic campaign, conducted August 22, 2005, documented stream-water quality under existing ambient conditions. A second synoptic campaign, conducted August 24, 2005, documented stream-water quality during a pH-modification experiment that elevated the pH of Mineral Creek. The experimental pH modification was designed to determine the potential reductions in dissolved constituent concentrations that would result from the implementation of an active treatment system for acid mine drainage. During both synoptic sampling campaigns, a solution containing lithium bromide was injected continuously to allow for the calculation of streamflow using the tracer-dilution method. Synoptic water-quality samples were collected from 30 stream sites and 11 inflow locations along the 2-kilometer study reach. Data from the study provide spatial profiles of pH, concentration, and streamflow under both existing and experimentally-altered conditions. This report presents the data obtained August 21-24, 2005, as well as the methods used for sample collection and data analysis.

  1. Water quality of interstate streams in the Susquehanna River Basin monitoring report No. 3, water year 1989 (October 1988-September 1989)

    SciTech Connect

    McMorran, C.P.; Bollinger, S.W.

    1990-01-01

    Water samples were collected from twelve stations on interstate streams in November 1988, and February, May and August 1989. Water samples were collected from 23 stations on other interstate streams. Benthic macroinvertebrates were sampled from each station in July and August 1989. The data collected is used: (1) to assess compliance with water quality standards; (2) to assess impacts on water quality; (3) to characterize ambient and seasonal stream quality; and (4) for future trend assessment. Scott Creek is the only interstate stream having poor water quality. Untreated sewage discharged from Cardiff, maryland impairs water quality and biological conditions. The Cowanesque River exhibits biological impacts due to Cowanesque Lake, but impacts on water quality were minor. The Chemung River showed slight to moderate impairment of macroinvertebrates and water quality due to wastewater discharges from Elmira. Octoraro Creek and Tioga River showed moderate macroinvertebrate impairment coincident with elevated concentrations of some chemical parameters. Elevated chemical concentrations were observed in the Susquehanna River at Sayre and Cayuta Creek; however, no macroinvertebrate impairment was observed. Falling Branch Deer Creek, Big Branch Deer Creek, Troups Creek and Trowbridge Creek showed varying degrees of macroinvertebrate impairment, but no specific causes were indicated by water quality. Most interstate streams have good water quality. Only 39 out of 1,460 observations exceeded water quality standards. Aluminum most commonly exceeded standards.

  2. Dynamic Hydraulic Conductivity, Streambed Sediment, and Biogeochemistry Following Stream Restoration

    NASA Astrophysics Data System (ADS)

    Baker, S.; Jefferson, A.; Kinsman-Costello, L. E.

    2015-12-01

    Stream restoration projects strive to improve water quality and degraded habitat, yet restoration projects often fall short of achieving their goals. Hyporheic exchange facilitates biogeochemical interaction which can contribute to positive water quality and habitat, but there are limited data on how restoration affects hyporheic processes. Hyporheic flowpaths can be altered by the processes and products of stream restoration, as well as the transport of fine sediment through the stream bed post-restoration. In two northeastern Ohio headwater streams, variations in hydraulic conductivity and pore water chemistry were monitored following restoration, as measures of hyporheic functioning. A second-order stream restored in August 2013, had a slight decrease in average hydraulic conductivity but an increase in heterogeneity from pre-restoration to four months post-restoration. Data collected 10 and 15 months post-restoration show continued declines in hydraulic conductivity throughout large constructed riffles. These piezometers also indicate dominance of downwelling throughout the riffles with only isolated upwelling locations. Grain size analysis of freeze cores collected in streambed sediments show differences suggesting fluvial transport and sorting have occurred since construction was completed. Pore water sampled from piezometers within the riffles had Mn2+ concentrations ten times higher than surface water, suggesting redox transformations are occurring along hyporheic flowpaths. A first-order stream reach, immediately downstream of a dam, restored in April 2014 had no significant change in average hydraulic conductivity between 1 and 2 months post-restoration, but many individual piezometers had increases of over 100% in high gradient positions or decreases of over 50% in low gradient positions. Changes in hydraulic conductivities in both restored streams are thought to be an adjustments from disturbance to a new dynamic equilibrium influenced by the morphology

  3. Gravity waves and convection in Colorado during July 1983

    NASA Technical Reports Server (NTRS)

    Einaudi, F.; Clark, W. L.; Green, J. L.; Vanzandt, T. E.; Fua, D.

    1987-01-01

    The dynamics of gravity-wave/convective-cell interaction is studied using NOAA data collected in NE Colorado during July and August 1983. The pressure fields measured with microbarographs, the tropospheric wind profiles obtained with a UHF wind profiler radar, and precipitation data collected with a 10-cm weather radar for four events (A, B, C, and D) are analyzed. The four disturbances are detected through a substantial depth of the troposphere. It is observed that in event A the wave and convective cells appear to be locked together; in event B, the wave and convective cells commence about the same time, but the wave velocities differ from the cell velocities; and in events C and D, the waves move faster than the maximum wind in the jet and faster than the convective cells. It is suggested that events A and B are generated by wind shear in the jet stream, and the excitation of events C and D depends on mechanisms such as vertical convective motion and acceleration in the jet flow.

  4. Variability, trends, and teleconnections of stream flows with large-scale climate signals in the Omo-Ghibe River Basin, Ethiopia.

    PubMed

    Degefu, Mekonnen Adnew; Bewket, Woldeamlak

    2017-04-01

    This study assesses variability, trends, and teleconnections of stream flow with large-scale climate signals (global sea surface temperatures (SSTs)) for the Omo-Ghibe River Basin of Ethiopia. Fourteen hydrological indices of variability and extremes were defined from daily stream flow data series and analyzed for two common periods, which are 1972-2006 for 5 stations and 1982-2006 for 15 stations. The Mann-Kendall's test was used to detect trends at 0.05 significance level, and simple correlation analysis was applied to evaluate associations between the selected stream flow indices and SSTs. We found weak and mixed (upward and downward) trend signals for annual and wet (Kiremt) season flows. Indices generated for high-flow (flood) magnitudes showed the same weak trend signals. However, trend tests for flood frequencies and low-flow magnitudes showed little evidences of increasing change. It was also found that El Niño-Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD) are the major anomalies affecting stream flow variability in the Omo-Ghibe Basin. The strongest associations are observed between ENSO/Niño3.4 and the stream flow in August and September, mean Kiremt flow (July-September), and flood frequency (peak over threshold on average three peaks per year (POT3_Fre)). The findings of this study provide a general overview on the long-term stream flow variability and predictability of stream flows for the Omo-Ghibe River Basin.

  5. Characterization of peak streamflows and flood inundation of selected areas in Louisiana from the August 2016 flood

    USGS Publications Warehouse

    Watson, Kara M.; Storm, John B.; Breaker, Brian K.; Rose, Claire E.

    2017-02-06

    Heavy rainfall occurred across Louisiana and southwestern Mississippi in August 2016 as a result of a slow-moving area of low pressure and a high amount of atmospheric moisture. The storm caused major flooding in the southern portions of Louisiana including areas surrounding Baton Rouge and Lafayette. Flooding occurred along the rivers such as the Amite, Comite, Tangipahoa, Tickfaw, Vermilion, and Mermentau Rivers. Over 31 inches of rain was reported in the city of Watson, 20 miles northeast of Baton Rouge, La., over the duration of the event. Streamflow-gaging stations operated by the U.S. Geological Survey (USGS) recorded peak streamflows of record at 10 locations, and 7 other locations experienced peak streamflows ranking in the top five for the duration of the period of record. In August 2016, USGS hydrographers made 50 discharge measurements at 21 locations on streams in Louisiana. Many of those discharge measurements were made for the purpose of verifying the accuracy of stage-streamflow relations at gaging stations operated by the USGS. Following the storm event, USGS hydrographers recovered and documented 590 high-water marks, noting location and height of the water above land surface. Many of these high-water marks were used to create 12 flood-inundation maps for selected communities of Louisiana that experienced flooding in August 2016. Digital datasets of the inundation area, modeling boundary, water depth rasters, and final map products are available online.

  6. Stream systems.

    Treesearch

    Jack E. Williams; Gordon H. Reeves

    2006-01-01

    Restored, high-quality streams provide innumerable benefits to society. In the Pacific Northwest, high-quality stream habitat often is associated with an abundance of salmonid fishes such as chinook salmon (Oncorhynchus tshawytscha), coho salmon (O. kisutch), and steelhead (O. mykiss). Many other native...

  7. Stream Processors

    NASA Astrophysics Data System (ADS)

    Erez, Mattan; Dally, William J.

    Stream processors, like other multi core architectures partition their functional units and storage into multiple processing elements. In contrast to typical architectures, which contain symmetric general-purpose cores and a cache hierarchy, stream processors have a significantly leaner design. Stream processors are specifically designed for the stream execution model, in which applications have large amounts of explicit parallel computation, structured and predictable control, and memory accesses that can be performed at a coarse granularity. Applications in the streaming model are expressed in a gather-compute-scatter form, yielding programs with explicit control over transferring data to and from on-chip memory. Relying on these characteristics, which are common to many media processing and scientific computing applications, stream architectures redefine the boundary between software and hardware responsibilities with software bearing much of the complexity required to manage concurrency, locality, and latency tolerance. Thus, stream processors have minimal control consisting of fetching medium- and coarse-grained instructions and executing them directly on the many ALUs. Moreover, the on-chip storage hierarchy of stream processors is under explicit software control, as is all communication, eliminating the need for complex reactive hardware mechanisms.

  8. Relation of stream quality to streamflow, and estimated loads of selected water-quality constituents in the James and Rappahannock rivers near the fall line of Virginia, July 1988 through June 1990

    USGS Publications Warehouse

    Belval, D.L.; Campbell, J.P.; Woodside, M.D.

    1994-01-01

    This report presents the results of a study by the U.S. Geological Survey, in cooperation with the Virginia Department of Environmental Quality-- Division of Intergovernmental Coordination to monitor and estimate loads of selected nutrients and suspended solids discharged to Chesapeake Bay from two major tributaries in Virginia. From July 1988 through June 1990, monitoring consisted of collecting depth-integrated, cross-sectional samples from the James and Rappahannock Rivers during storm- flow conditions and at scheduled intervals. Water- quality constituents that were monitored included total suspended solids (residue, total at 105 degrees Celsius), dissolved nitrite plus nitrate, dissolved ammonia, total Kjeldahl nitrogen (ammonia plus organic), total nitrogen, total phosphorus, dissolved orthopohosphorus, total organic carbon, and dissolved silica. Daily mean load estimates of each constituent were computed by month, using a seven-parameter log-linear-regression model that uses variables of time, discharge, and seasonality. Water-quality data and constituent- load estimates are included in the report in tabular and graphic form. The data and load estimates provided in this report will be used to calibrate the computer modeling efforts of the Chesapeake Bay region, evaluate the water quality of the Bay and the major effects on the water quality, and assess the results of best-management practices in Virginia.

  9. 57. Photocopied August 1978. POWER HOUSE MASONRY WALLS, NORTH FRONT, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    57. Photocopied August 1978. POWER HOUSE MASONRY WALLS, NORTH FRONT, JULY 26, 1901. THE COMPLETED TAIL RACE EXITS ARE JUST BELOW THE RISING MASONRY WALL. THE COFFER DAM IS ON THE EXTREME RIGHT HAND PORTION OF THE PHOTOGRAPH. (161) - Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie, Chippewa County, MI

  10. Fuel-cell engine stream conditioning system

    DOEpatents

    DuBose, Ronald Arthur

    2002-01-01

    A stream conditioning system for a fuel cell gas management system or fuel cell engine. The stream conditioning system manages species potential in at least one fuel cell reactant stream. A species transfer device is located in the path of at least one reactant stream of a fuel cell's inlet or outlet, which transfer device conditions that stream to improve the efficiency of the fuel cell. The species transfer device incorporates an exchange media and a sorbent. The fuel cell gas management system can include a cathode loop with the stream conditioning system transferring latent and sensible heat from an exhaust stream to the cathode inlet stream of the fuel cell; an anode humidity retention system for maintaining the total enthalpy of the anode stream exiting the fuel cell related to the total enthalpy of the anode inlet stream; and a cooling water management system having segregated deionized water and cooling water loops interconnected by means of a brazed plate heat exchanger.

  11. Disease Occurrence - Worldwide, July - December 1983. Compilation of Unclasssified Articles.

    DTIC Science & Technology

    1983-12-01

    were children under 2 years of age. Another focus of gastroenteritis is in Ciudad Juarez , on the northern border of Chihuahua State. Nearly 16,000...ARGENTINA July - Extensive flooding of the upper Parana River occurred in northern Argentina earlier this month; as of 14 July, 100 towns in the Chaco and...be eradicated within the next few days. August - Heavy flooding has continued to cause serious problems in southern Brazil (Parana, Rio Grande do Sul

  12. Assessment of the July effect in post-endoscopic retrograde cholangiopancreatography pancreatitis: Nationwide Inpatient Sample

    PubMed Central

    Schulman, Allison R; Abougergi, Marwan S; Thompson, Christopher C

    2017-01-01

    AIM To assess incidence of post-endoscopic retrograde cholangiopancreatography (post-ERCP) pancreatitis in the early (July/August/September) vs the late (April/May/June) academic year and evaluate in-hospital mortality, length of stay (LOS), and total hospitalization charge between these time periods. METHODS This was a retrospective cohort study using the 2012 Nationwide Inpatient Sample (NIS). Patients with International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9 CM) procedure codes for ERCP were included. Patients were excluded from the study if they had an ICD-9 CM code for a principal diagnosis of acute pancreatitis, if the ERCP was performed before or on the day of admission or if they were admitted to non-teaching hospitals. Post-ERCP pancreatitis was defined as an ICD-9 CM code for a secondary diagnosis of acute pancreatitis in patients who received an ERCP as delineated above. ERCPs performed during the months of July, August and September was compared to those performed in April, May and June in academic hospitals. ERCPs performed at academic hospitals during the early vs late year were compared. Primary outcome was incidence of post-ERCP pancreatitis. Secondary outcomes included in-hospital mortality, length of stay (LOS), and total hospitalization charge. Proportions were compared using fisher’s exact test and continuous variables using student t-test. Multivariable regression was performed. RESULTS From the 36480032 hospitalizations in 2012 in the United States, 6248 were included in the study (3065 in July/August/September and 3183 in April/May/June) in the 2012 academic year. Compared with patients admitted in July/August/September, patients admitted in April/May/June had no statistical difference in all variables including mean age, percent female, Charleston comorbidity index, race, median income, and hospital characteristics including region, bed size, and location. Incidence of post-ERCP pancreatitis in early vs late

  13. Preliminary Results from VOC measurements in the Lower Fraser Valley in July/Aug 2012

    NASA Astrophysics Data System (ADS)

    Schiller, C. L.; Jones, K.; Vingarzan, R.; Leaitch, R.; Macdonald, A.; Osthoff, H. D.; Reid, K.

    2012-12-01

    In July/August 2012, a pilot study looking at the effect of ClNO2 production on the ozone concentrations in the lower Fraser valley near Abbotsford, BC was conducted. The lower Fraser valley in British Columbia Canada has some of the highest ozone concentrations and visibility issues in Canada. Abbotsford is located approximately 80 kms east of Vancouver, BC and approximately 30 kms from the ocean. The site was located in a largely agricultural area with fruit farms (raspberries and blueberries) and poultry barns predominating. During the study biogenic and anthropogenic VOCs were measured in situ using a GCMS/FID with hourly samples. Particle composition was measured using an ACSM and size distribution using an SMPS. Preliminary results from the study will be discussed.

  14. L'Anse Warden Electric Company Boiler Number One Emission Test Report – July 2016

    EPA Pesticide Factsheets

    L’Anse Warden Electric Company (LWEC) submitted results from an emission test on the Boiler No. 1 stack. Stack air emission testing was conducted in July 2016, and the report became available in August 2016.

  15. 92. Photocopied August 1978. RHEOSTATS AND OIL SWITCHES, IN PENSTOCK ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    92. Photocopied August 1978. RHEOSTATS AND OIL SWITCHES, IN PENSTOCK 30 AREA, LOOKING WEST, AUGUST 11, 1914. THE RHEOSTATS AND OIL SWITCHES WERE REMOTELY CONTROLLED FROM THE SWITCHBOARD AND LOCATED AT CONVENIENT POINTS ALONG THE GENERATOR ROOM GALLERY SO THAT THE CONTROL PANELS COULD BE BUILT AS SLIMLY AS POSSIBLE. (916) - Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie, Chippewa County, MI

  16. Starting School in August

    ERIC Educational Resources Information Center

    Chmelynski, Carol

    2006-01-01

    In this article, the author discusses the controversial decision of the school board from the Broward County, Florida to start the school year on August 9. School boards across the country that are grappling with the idea of starting school earlier in the year are increasingly running up against strong opposition from parents. In many districts,…

  17. Flood inundation extent and depth in selected areas of Louisiana in August 2016

    USGS Publications Warehouse

    Heal, Elizabeth; Watson, Kara M.

    2017-01-01

    A slow-moving area of low pressure and a high amount of atmospheric moisture produced heavy rainfall across Louisiana and southwest Mississippi in August 2016. Over 31 inches of rain was reported in Watson, 30 miles northeast of Baton Rouge, over the duration of the event. The result was major flooding that occurred in the southern portions of Louisiana and included areas surrounding Baton Rouge and Lafayette along rivers such as the Amite, Comite, Tangipahoa, Tickfaw, Vermilion, and Mermentau. The U.S. Geological Survey (USGS) Lower Mississippi-Gulf Water Science Center operates many continuous, streamflow-gaging stations in the impacted area.  Peak streamflows of record were measured at 10 locations, and seven other locations experienced peak streamflows ranking in the top 5 for the duration of the period of record. In August 2016, USGS personnel  made fifty streamflow measurements at 21 locations on streams in Louisiana. Many of those streamflow measurements were made for the purpose of verifying the accuracy of the stage-streamflow relation at the associated gaging station. USGS personnel also recovered and documented 590 high-water marks after the storm event by noting the location and height of the water above land surface. Many of these high water marks were used to create twelve flood-inundation maps for selected communities of Louisiana that experienced flooding in August 2016. This data release provides the actual flood-depth measurements made in selected river basins of Louisiana that were used to produce the flood-inundation maps published in the companion product (Watson and others, 2017). 

  18. Spatial Heterogeneity of Stream Water Chemistry in the Elder Creek Catchment at the Eel River Critical Zone Observatory.

    NASA Astrophysics Data System (ADS)

    Thurnhoffer, B. M.; Lovill, S. M.; Nghiem, A.; Kim, H.; Bishop, J. K. B.

    2014-12-01

    How does stream chemistry vary with respect to discharge, flow distance, elevation, hill slope orientation, lithology, and vegetation on catchment scale? Is it possible to discern fast flowing seasonally recharged subsurface waters from long residence time waters contributing to base flow? To answer these questions, water samples were collected at ~80 locations distributed over the channel network of the (17 km2) Elder Creek catchment during surveys in May and August/September 2014. The site, located at the Angelo Coast Range Reserve near the headwaters of the South Fork of the Eel River in northern California, experiences a Mediterranean climate with warm dry summers and cold wet winters; this year (2014), our area has received less than 50% of expected precipitation and is experiencing an extreme drought. Our survey times correspond to the beginning of the dry season and late dry season, respectively. The subsurface lithology of the region almost uniform, being largely composed of argillite mudstone with intermittent areas underlain with sandstone. It is forested with Douglas fir, live and tan oaks, madrone and California bay laurel, which vary in abundance with hill-slope orientation. Due to drought, the Elder Catchment has recently experienced the effects of the nearby Lodge Lightening Complex Fire (first detection July 31 2014) and its effects may be differentiated through the continuous 1 - 3 day frequency sampling of Elder Creek water using the ISCO Gravity Filtration System (GFS; Kim et al. 2012, EST). All water samples are analyzed for dissolved major, minor, and trace solutes by Inductively Couple Plasma Mass Spectrometry and this report focuses on major solutes such as Na, K, Ca, Mg and Si; redox sensitive metals Fe and Mn; and Ba and Sr. Preliminary analysis of May 2014 data shows interesting patterns between tributaries, particularly differences between streams on north vs. south facing slopes. Concentrations of Ca, Mg, and Na decrease down slope in

  19. A Tale of Two Sites: Planning Ahead for August 2017

    NASA Astrophysics Data System (ADS)

    Bartlett, Jennifer L.; Bell, S.

    2012-01-01

    On August 21, 2017, most of the United States will experience a partial solar eclipse with a total solar eclipse visible from a narrow band, approximately 73 mi (118 km) wide, crossing twelve states. The Shawnee National Forest, Illinois falls within this favored region but Austin, Texas does not. While both locations lie along the April 8, 2024, path of totality, the Forest is still better positioned. On average, three solar eclipse tracks race across the globe every two years; in rare years, as many as five solar eclipses, including partial ones, can occur. Because each individual track covers less than 1% of the Earth's surface, an average of 375 years lapse between total solar eclipses at a particular site. In 2017, the longest duration of totality for the eclipse will darken the Shawnee National Forest (37°34.5’ N, 89°7.3’ W) for 2 min. 44 sec. In 2024, totality will last 4 min. 13 sec. over the Forest. Although July 7, 1442, was the last total solar eclipse here, an annular solar eclipse was visible in 1865. In 2017, Austin will only experience a partial eclipse with 65% of the Sun obscured. In 2024, totality will darken the state capital for 1 min. 48 sec. The last total solar eclipse here occurred on May 26, 1397, which was immediately preceded by another on January 21, 1395. More recently, two annular solar eclipses were visible during the 20th century. The August and April weather at both sites is generally favorable; while clouds and rain are possible, neither is a significant threat. What your outreach program will see and do during these eclipses depends heavily on where you are, or can go. For those impatiently awaiting their next eclipse fix, a partially eclipsed sun will set over both sites on May 20, 2012.

  20. Progress report, July 1981-July 1982

    SciTech Connect

    McCormick, J.J.; Maher, V.M.

    1982-01-01

    Research progress is reported for the period July 1981 through July 1982. Two reactive metabolites of benzo(a)pyrene were compared to determine whether in diploid human fibroblasts, one is more mutagenic than the other and their action compared in diploid Chinese hamster fibroblasts. The mutagenic action of a model compound for aflatoxin was determined in repair-proficient and repair-deficient human cells as an example of a compound similar to benzo(a)pyrene in structure but different in binding to DNA and in mechanism of mutagenesis. It was determined whether diploid human endothelial or epithelial cells can be induced to transform into anchorage independent cells using chemical carcinogens and/or radiation and whether these cell types share steps to tumorigenicity in common with diploid human fibroblasts. (ACR)

  1. Atmospheric and Microbial Nitrate Contributions to Streams across a Regional Nitrogen Deposition Gradient

    NASA Astrophysics Data System (ADS)

    Rose, L.; Elliott, E. M.

    2014-12-01

    Chronically elevated atmospheric nitrate deposition has increased nitrate export from forests worldwide. This problem is particularly evident in the eastern U.S., where elevated stream nitrate concentrations and export from forested watersheds has led to the suggestion that some forests may be at or nearing a state of nitrogen saturation. To investigate the utility of nitrate stable isotopes in assessing the nitrogen saturation status of forests, we measured monthly δ15N, δ18O, Δ17O, and concentrations of nitrate in precipitation and stream water from reference watersheds at Coweeta (North Carolina), Fernow (West Virginia), and Hubbard Brook (New Hampshire) Experimental Forests from August 2012 to July 2013. Long-term mean nitrate deposition ranges from 11 kg ha-1 yr-1 to 17 kg ha-1 yr-1 and is significantly different (p<0.05) among the sites. Nitrate concentrations and isotopic compositions of precipitation did not differ significantly among the sites during the study. Seasonal trends in δ18O and Δ17O of nitrate values were also similar among sites, and were indicative of seasonal variation in dominant NOx oxidation pathway. The study sites differed significantly with respect to stream nitrate concentration (p<0.05) and isotopic composition (p<0.05). The high deposition site (Fernow) had the highest mean stream water nitrate concentration during the study period but the lowest percentages of atmospheric nitrate in monthly samples and on an annual average basis. In contrast, the low deposition site (Coweeta) had the lowest mean stream nitrate concentrations during the study and the highest mean percentage of atmospheric nitrate in the stream. Unprocessed atmospheric nitrate was also present in Coweeta stream samples during every month that isotope analyses were conducted for this site. Among these watersheds, stream nitrate concentration was negatively related to the proportion of unprocessed atmospheric nitrate in streams (R2=0.23; p<0.05). We will explore

  2. 43. and Design, Grand Canyon National Park, dated August 23, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    43. and Design, Grand Canyon National Park, dated August 23, 1934, and September 17, 1934 (original located at Federal Records Center, Denver, Colorado, #113/3084-set of 2) SEWAGE PLANT ADDITION. - Water Reclamation Plant, Grand Canyon, Coconino County, AZ

  3. The Phoenix stream: A cold stream in the southern hemisphere

    DOE PAGES

    Balbinot, E.

    2016-03-17

    In this study, we report the discovery of a stellar stream in the Dark Energy Survey (DES) Year 1 (Y1A1) data. The discovery was made through simple color-magnitude filters and visual inspection of the Y1A1 data. We refer to this new object as the Phoenix stream, after its resident constellation. After subtraction of the background stellar population we detect a clear signal of a simple stellar population. By fitting the ridge line of the stream in color-magnitude space, we find that a stellar population with agemore » $$\\tau=11.5\\pm0.5$$ Gyr and $[Fe/H]<-1.6$ located 17.5$$\\pm$$0.9 kpc from the Sun gives an adequate description of the stream stellar population. The stream is detected over an extension of 8$$^{\\circ}.$$1 (2.5 kpc) and has a width of $$\\sim$$54 pc assuming a Gaussian profile, indicating that a globular cluster is a probable progenitor. There is no known globular cluster within 5 kpc compatible with being the progenitor of the stream, assuming that the stream traces its orbit. We examined overdensities along the stream, however no obvious counterpart bound stellar system is visible in the coadded images. We also find overdensities along the stream that appear to be symmetrically distributed - consistent with the epicyclic overdensity scenario for the formation of cold streams - as well as a misalignment between the Northern and Southern part of stream. Despite the close proximity we find no evidence that this stream and the halo cluster NGC 1261 have a common accretion origin linked to the recently found EriPhe overdensity (Li et al. 2016).« less

  4. The Phoenix stream: A cold stream in the southern hemisphere

    SciTech Connect

    Balbinot, E.

    2016-03-17

    In this study, we report the discovery of a stellar stream in the Dark Energy Survey (DES) Year 1 (Y1A1) data. The discovery was made through simple color-magnitude filters and visual inspection of the Y1A1 data. We refer to this new object as the Phoenix stream, after its resident constellation. After subtraction of the background stellar population we detect a clear signal of a simple stellar population. By fitting the ridge line of the stream in color-magnitude space, we find that a stellar population with age $\\tau=11.5\\pm0.5$ Gyr and $[Fe/H]<-1.6$ located 17.5$\\pm$0.9 kpc from the Sun gives an adequate description of the stream stellar population. The stream is detected over an extension of 8$^{\\circ}.$1 (2.5 kpc) and has a width of $\\sim$54 pc assuming a Gaussian profile, indicating that a globular cluster is a probable progenitor. There is no known globular cluster within 5 kpc compatible with being the progenitor of the stream, assuming that the stream traces its orbit. We examined overdensities along the stream, however no obvious counterpart bound stellar system is visible in the coadded images. We also find overdensities along the stream that appear to be symmetrically distributed - consistent with the epicyclic overdensity scenario for the formation of cold streams - as well as a misalignment between the Northern and Southern part of stream. Despite the close proximity we find no evidence that this stream and the halo cluster NGC 1261 have a common accretion origin linked to the recently found EriPhe overdensity (Li et al. 2016).

  5. Momentum, water vapor, and carbon dioxide exchange at a centrally located prairie site during FIFE

    NASA Technical Reports Server (NTRS)

    Verma, Shashi B.; Kim, Joon; Clement, Robert J.

    1992-01-01

    Eddy correlation measurements were taken of momentum, water vapor, sensible heat, and CO2 at a centrally located plateau site in the FIFE study area from May to October 1987. Approximately 82 percent of the vegetation at the site was composed of several C4 grass species, with the remainder being C3 grasses, forbs, wedges, and woody plants. Precipitation was about normal during the study period, except for a three week dry period in late July to early August that caused moisture stress conditions.

  6. Structure and Spatial Distribution of the Chironomidae Community in Mesohabitats in a First Order Stream at the Poço D'Anta Municipal Biological Reserve in Brazil

    PubMed Central

    Vescovi Rosa, Beatriz Figueiraujo Jabour; de Oliveira, Vívian Campos; Alves, Roberto da Gama

    2011-01-01

    The Chironomidae occupy different habitats along the lotic system with their distribution determined by different factors such as the substrate characteristics and water speed. The input of vegetable material from the riparian forest allows a higher habitat diversity and food to the benthic fauna. The main aim of this paper is to verify the structure and spatial distribution of the Chironomidae fauna in different mesohabitats in a first order stream located at a Biological Reserve in the southeast of Brazil. In the months of July, August, and September 2007, and in January, February, and March 2008, samples were collected with a hand net (250 µm) in the following mesohabitats: litter from riffles, litter from pools, and sediment from pools. The community structure of each mesohabitat was analyzed through the abundance of organisms, taxa richness, Pielou's evenness, Shannon's diversity, and taxa dominance. Similarity among the mesohabitats was obtained by Cluster analysis, and Chironomidae larvae distribution through the Correspondence analysis. Indicator species analysis was used to identify possible taxa preference for a determined mesohabitat. The analyzed mesohabitats showed high species richness and diversity favored by the large environmental heterogeneity. Some taxa were indicators of the type of mesohabitat. The substrate was the main factor that determined taxa distribution in relation to water flow differences (riffle and pool). Stream characteristics such as low water speed and the presence of natural mechanisms of retention may have provided a higher faunistic similarity between the areas with different flows. The results showed that the physical characteristics of each environment presented a close relationship with the structure and spatial distribution of the Chironomidae fauna in lotic systems. PMID:21529258

  7. Structure and spatial distribution of the Chironomidae community in mesohabitats in a first order stream at the Poço D'Anta Municipal Biological Reserve in Brazil.

    PubMed

    Rosa, Beatriz Figueiraujo Jabour Vescovi; de Oliveira, Vívian Campos; Alves, Roberto da Gama

    2011-01-01

    The Chironomidae occupy different habitats along the lotic system with their distribution determined by different factors such as the substrate characteristics and water speed. The input of vegetable material from the riparian forest allows a higher habitat diversity and food to the benthic fauna. The main aim of this paper is to verify the structure and spatial distribution of the Chironomidae fauna in different mesohabitats in a first order stream located at a Biological Reserve in the southeast of Brazil. In the months of July, August, and September 2007, and in January, February, and March 2008, samples were collected with a hand net (250 µm) in the following mesohabitats: litter from riffles, litter from pools, and sediment from pools. The community structure of each mesohabitat was analyzed through the abundance of organisms, taxa richness, Pielou's evenness, Shannon's diversity, and taxa dominance. Similarity among the mesohabitats was obtained by Cluster analysis, and Chironomidae larvae distribution through the Correspondence analysis. Indicator species analysis was used to identify possible taxa preference for a determined mesohabitat. The analyzed mesohabitats showed high species richness and diversity favored by the large environmental heterogeneity. Some taxa were indicators of the type of mesohabitat. The substrate was the main factor that determined taxa distribution in relation to water flow differences (riffle and pool). Stream characteristics such as low water speed and the presence of natural mechanisms of retention may have provided a higher faunistic similarity between the areas with different flows. The results showed that the physical characteristics of each environment presented a close relationship with the structure and spatial distribution of the Chironomidae fauna in lotic systems.

  8. Physics Flash August 2016

    SciTech Connect

    Kippen, Karen Elizabeth

    2016-08-25

    Physics Flash is the newsletter for the Physics Division at Los Alamos National Laboratory. This newsletter is for August 2016. The following topics are covered: "Accomplishments in the Trident Laser Facility", "David Meyerhofer elected as chair-elect APS Nominating Committee", "HAWC searches for gamma rays from dark matter", "Proton Radiography Facility commissions electromagnetic magnifier", and "Cosmic ray muon computed tomography of spent nuclear fuel in dry storage casks."

  9. stream-stream: Stellar and dark-matter streams interactions

    NASA Astrophysics Data System (ADS)

    Bovy, Jo

    2017-02-01

    Stream-stream analyzes the interaction between a stellar stream and a disrupting dark-matter halo. It requires galpy (ascl:1411.008), NEMO (ascl:1010.051), and the usual common scientific Python packages.

  10. Chemical, physical, biochemical, and bacteriological characteristics at selected stream sites in Puerto Rico, 1976-77

    USGS Publications Warehouse

    Quinones, F.; Vasquez, Pedro; Pena-Cortes, Rafael

    1978-01-01

    In 1969, the Caribbean District of the U.S. Geological Survey, in cooperation with the Commonwealth of Puerto Rico, initiated the operation of a network to monitor some parameters indicative of water-quality changes at selected stream sites. In 1974, at the request of the Environmental Quality Board of Puerto Rico, the network was modified to conform with the Environmental Protection Agency National Water Quality Surveillance System. The purpose of the present network is to monitor changes in water quality between the upstream and downstream stations. The expanded network consisted of 58 stations. During 1976, five had been discontinued. One other was added late in 1976. Most of the stations in the original network have been maintained, thus providing some degree of continuity. The monitoring stations used in this report are shown on a map and listed in a table. The results of the network operation are summarized for the period July 1976 to August 1977. (Woodard-USGS)

  11. Earth Reconnect -- July 2012

    NASA Image and Video Library

    A visualization of Earth's magnetosphere on July 15-16, 2012, shows how constant magnetic reconnection caused by an arriving coronal mass ejection, or CME, from the sun disrupted the magnetosphere,...

  12. Characterizing changing stream water quality in a glacierized tropical watershed

    NASA Astrophysics Data System (ADS)

    Mark, B. G.; Eddy, A. M.; Baraer, M.; McKenzie, J. M.; Walsh, E.; Fernandez, A.; Wigmore, O.; Battista, R.; Guittard, A.

    2013-12-01

    Glacier recession in the Cordillera Blanca, Peru has been causing downstream hydrologic transformations, altering the amount, timing and chemical quality of stream water. Increased demand from multiple water resource users, particularly industrial-scale agricultural irrigation along the desert coast, underscores the need for accurate source attribution and treatment of pollutants. Water quality assessment is challenging given natural geologic controls on water chemistry concentrations, and a lack of consistent historical monitoring. Here we present results from an analytical characterization of spatial and temporal variability in the dissolved loads of major ions, isotopes and select trace metals in the Pacific-draining Santa River and tributaries. Our approach incorporates multi-year synoptic sampling of water chemistry and stream discharge along the river course and at tributary pour points, along with weekly sampling at single point along the upper Santa. Samples were taken predominately during the austral winter months of June, July, and August in 2004 - 2009 and 2011 - 2013 at 20-30 stream localities. Digitized maps of geology, land use and hydrography permit geographic visualization and exploratory GIS-based data analysis. Results indicate that the dominant hydrochemical processes throughout the Santa watershed include silicate weathering, coupled pyrite oxidation with silicate weathering, and to a lesser extent, carbonate weathering. Low pH and high concentrations of sulfate are found in the presence of high-silica granitic and metamorphic surface lithology in some sites proximal to receding glaciers, reflecting an environment that is driven by coupled sulfide-oxidation and silicate dissolution. Numerous sites had elevated concentrations of trace metals (such as As, Cd, and Pb) indicating potential local sources of contamination, some in excess of World Health Organization. Weekly sampling show dilution of certain trace metals during the wet season, and

  13. RADIAL EVOLUTION OF SOLAR WIND TURBULENCE DURING EARTH AND ULYSSES ALIGNMENT OF 2007 AUGUST

    SciTech Connect

    D'Amicis, R.; Bruno, R.; Pallocchia, G.; Bavassano, B.; Telloni, D.; Carbone, V.; Balogh, A.

    2010-07-01

    At the end of 2007 August, during the minimum of solar cycle 23, a lineup of Earth and Ulysses occurred, giving the opportunity to analyze, for the first time, the same plasma sample at different observation points, namely at 1 and 1.4 AU. In particular, it allowed us to study the radial evolution of solar wind turbulence typical of fast wind streams as proposed in a Coordinated Investigation Programme for the International Heliophysical Year. This paper describes both the macrostructure and the fluctuations at small scales of this event. We find that soon after detecting the same fast stream, the Advanced Composition Explorer (ACE) observed a change of magnetic polarity being the interplanetary current sheet located between the orbits of the two spacecraft. Moreover, we observe that the compression region formed in front of the fast stream detected at ACE's location evolves in a fast forward shock at Ulysses' orbit. On the other hand, small-scale analysis shows that turbulence is evolving. The presence of a shift of the frequency break separating the injection range from the inertial range toward lower frequencies while distance increases is a clear indication that nonlinear interactions are at work. Moreover, we observe that intermittency, as measured by the flatness factor, increases with distance. This study confirms previous analyses performed using Helios observations of the same fast wind streams at different heliocentric distances, allowing us to relax about the hypothesis of the stationarity of the source regions adopted in previous studies. Consequently, any difference noticed in the solar wind parameters would be ascribed to radial (time) evolution.

  14. Signatures of Slow Solar Wind Streams from Active Regions in the Inner Corona

    NASA Astrophysics Data System (ADS)

    Slemzin, V.; Harra, L.; Urnov, A.; Kuzin, S.; Goryaev, F.; Berghmans, D.

    2013-08-01

    The identification of solar-wind sources is an important question in solar physics. The existing solar-wind models ( e.g., the Wang-Sheeley-Arge model) provide the approximate locations of the solar wind sources based on magnetic field extrapolations. It has been suggested recently that plasma outflows observed at the edges of active regions may be a source of the slow solar wind. To explore this we analyze an isolated active region (AR) adjacent to small coronal hole (CH) in July/August 2009. On 1 August, Hinode/EUV Imaging Spectrometer observations showed two compact outflow regions in the corona. Coronal rays were observed above the active-region coronal hole (ARCH) region on the eastern limb on 31 July by STEREO-A/EUVI and at the western limb on 7 August by CORONAS- Photon/TESIS telescopes. In both cases the coronal rays were co-aligned with open magnetic-field lines given by the potential field source surface model, which expanded into the streamer. The solar-wind parameters measured by STEREO-B, ACE, Wind, and STEREO-A confirmed the identification of the ARCH as a source region of the slow solar wind. The results of the study support the suggestion that coronal rays can represent signatures of outflows from ARs propagating in the inner corona along open field lines into the heliosphere.

  15. StreamVOC--A Deterministic Source-Apportionment Model to Estimate Volatile Organic Compound Concentrations in Rivers and Streams

    USGS Publications Warehouse

    Asher, William E.; Bender, David A.; Zogorski, John S.; Bartholomay, Roy C.

    2006-01-01

    This report documents the construction and verification of the model, StreamVOC, that estimates (1) the time- and position-dependent concentrations of volatile organic compounds (VOCs) in rivers and streams as well as (2) the source apportionment (SA) of those concentrations. The model considers how different types of sources and loss processes can act together to yield a given observed VOC concentration. Reasons for interest in the relative and absolute contributions of different sources to contaminant concentrations include the need to apportion: (1) the origins for an observed contamination, and (2) the associated human and ecosystem risks. For VOCs, sources of interest include the atmosphere (by absorption), as well as point and nonpoint inflows of VOC-containing water. Loss processes of interest include volatilization to the atmosphere, degradation, and outflows of VOC-containing water from the stream to local ground water. This report presents the details of StreamVOC and compares model output with measured concentrations for eight VOCs found in the Aberjona River at Winchester, Massachusetts. Input data for the model were obtained during a synoptic study of the stream system conducted July 11-13, 2001, as part of the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey. The input data included a variety of basic stream characteristics (for example, flows, temperature, and VOC concentrations). The StreamVOC concentration results agreed moderately well with the measured concentration data for several VOCs and provided compound-dependent SA estimates as a function of longitudinal distance down the river. For many VOCs, the quality of the agreement between the model-simulated and measured concentrations could be improved by simple adjustments of the model input parameters. In general, this study illustrated: (1) the considerable difficulty of quantifying correctly the locations and magnitudes of ground-water-related sources of

  16. Effects of Large Dam Removal and Groundwater Pumping on Stream Temperature under Humid, Semiarid, and Arid Conditions

    NASA Astrophysics Data System (ADS)

    Risley, J. C.; Constantz, J. E.; Essaid, H.; Rounds, S. A.

    2010-12-01

    The effects of large upstream dam removal and in-reach groundwater pumping on streamflows and stream temperature was analyzed for humid, semiarid, and arid conditions with long dry seasons representing typical climate conditions where large dams are present, such as the western US or eastern Australia. A MODFLOW-2000 model, with options for stream-aquifer interaction and grid-block rewetting, was constructed to simulate monthly streamflows for 12 watershed scenarios described below. For each scenario, streamflow output became input into a stream temperature simulation model. Stream temperatures were simulated using the CE-QUAL-W2 water quality model over a 110 km model grid, with the presence and removal of a dam at the top of the reach and pumping in the lower 60 km of the reach. Measured meteorological data from three locations in Oregon and California representing the three meterologic conditions were used as model input to simulate the impact of varying climate conditions on streamflows and stream temperature. For each climate condition, four hypothetical watershed scenarios were modeled: (1) natural (no dam or pumping), (2) large upstream dam present, (3) dam with in-reach pumping, and (4) no dam with pumping continued, resulting in 12 cases. Dam removal, in the presence or absence of pumping, created significant changes in streamflow characteristics, resulting in significant changes in stream temperature throughout the year for all three climate conditions. From March to August, the presence of a dam caused monthly mean stream temperatures to decrease on average by approximately 3.0°C, 2.5°C, and 2.0°C for the humid, semiarid, and arid conditions, respectively; however, stream temperatures generally increased from September to February. Pumping caused stream temperatures to warm in summer and cool in winter by generally less than 0.5°C. Though dam removal led to greater changes in stream temperature than pumping, ephemeral conditions were increased both

  17. Stream Temperature Spatial and Temporal Response to Large Dam Removal and Groundwater Pumping under Varying Climate Conditions

    NASA Astrophysics Data System (ADS)

    Risley, J. C.; Constantz, J. E.; Essaid, H.; Rounds, S. A.

    2016-12-01

    We simulated the effects of large upstream dam removal and in-reach groundwater pumping on stream temperature spatial and temporal patterns in a hypothetical river basin under varying climate conditions. A MODFLOW-2000 model, with options for stream-aquifer interaction and grid-block rewetting, was constructed to simulate monthly streamflows for 12 watershed scenarios described below. For each scenario, streamflow output became input into a stream temperature simulation model. Stream temperatures were simulated using the CE-QUAL-W2 water quality model over a 110 km model grid, with the presence and removal of a dam at the top of the reach and pumping in the lower 60 km of the reach. Measured meteorological data from three locations in Oregon and California representing the three meteorological conditions were used as model input to simulate the impact of varying climate conditions on streamflows and stream temperature. For each climate condition, four hypothetical watershed scenarios were modeled: (1) natural (no dam or pumping), (2) large upstream dam present, (3) dam with in-reach pumping, and (4) no dam with pumping continued, resulting in 12 cases. If a transition from a humid to more arid environment occurs under future climate change, the simulations showed that decreased streamflow, increased solar radiation, and increased air temperatures would result in overall increased stream temperatures as expected. From March to August, the presence of a dam caused monthly mean stream temperatures to decrease on average by approximately 3.0°C, 2.5°C, and 2.0°C for the humid, semiarid, and arid conditions, respectively; however, stream temperatures generally increased from September to February. Pumping caused stream temperatures to warm in summer and cool in winter by generally less than 0.5°C. Though dam removal led to greater changes in stream temperature than pumping, ephemeral conditions were increased both temporally and spatially by pumping.

  18. Stream Studies.

    ERIC Educational Resources Information Center

    Stein, Scott

    1997-01-01

    Outlines a science curriculum reform effort aimed at enabling students to collect original data concerning an environmental parameter such as water quality on a yearly basis. Students track the overall health of the stream by analyzing both biotic and abiotic factors. (DDR)

  19. Stream Studies.

    ERIC Educational Resources Information Center

    Hamilton City Board of Education (Ontario).

    This manual provides teachers with some knowledge of ecological study methods and techniques used in collecting data when plants and animals are studied in the field. Most activities deal with the interrelatedness of plant and animal life to the structure and characteristics of a stream and pond. Also included in this unit plan designed for the…

  20. The Phoenix Stream: A Cold Stream in the Southern Hemisphere

    NASA Astrophysics Data System (ADS)

    Balbinot, E.; Yanny, B.; Li, T. S.; Santiago, B.; Marshall, J. L.; Finley, D. A.; Pieres, A.; Abbott, T. M. C.; Abdalla, F. B.; Allam, S.; Benoit-Lévy, A.; Bernstein, G. M.; Bertin, E.; Brooks, D.; Burke, D. L.; Carnero Rosell, A.; Carrasco Kind, M.; Carretero, J.; Cunha, C. E.; da Costa, L. N.; DePoy, D. L.; Desai, S.; Diehl, H. T.; Doel, P.; Estrada, J.; Flaugher, B.; Frieman, J.; Gerdes, D. W.; Gruen, D.; Gruendl, R. A.; Honscheid, K.; James, D. J.; Kuehn, K.; Kuropatkin, N.; Lahav, O.; March, M.; Martini, P.; Miquel, R.; Nichol, R. C.; Ogando, R.; Romer, A. K.; Sanchez, E.; Schubnell, M.; Sevilla-Noarbe, I.; Smith, R. C.; Soares-Santos, M.; Sobreira, F.; Suchyta, E.; Tarle, G.; Thomas, D.; Tucker, D.; Walker, A. R.; DES Collaboration

    2016-03-01

    We report the discovery of a stellar stream in the Dark Energy Survey Year 1 (Y1A1) data. The discovery was made through simple color-magnitude filters and visual inspection of the Y1A1 data. We refer to this new object as the Phoenix stream, after its resident constellation. After subtraction of the background stellar population we detect a clear signal of a simple stellar population. By fitting the ridge line of the stream in color-magnitude space, we find that a stellar population with age τ = 11.5 ± 0.5 Gyr and [Fe/H] < -1.6, located 17.5 ± 0.9 kpc from the Sun, gives an adequate description of the stream stellar population. The stream is detected over an extension of 8.°1 (2.5 kpc) and has a width of ˜54 pc assuming a Gaussian profile, indicating that a globular cluster (GC) is a probable progenitor. There is no known GC within 5 kpc that is compatible with being the progenitor of the stream, assuming that the stream traces its orbit. We examined overdensities (ODs) along the stream, however, no obvious counterpart-bound stellar system is visible in the coadded images. We also find ODs along the stream that appear to be symmetrically distributed—consistent with the epicyclic OD scenario for the formation of cold streams—as well as a misalignment between the northern and southern part of stream. Despite the close proximity we find no evidence that this stream and the halo cluster NGC 1261 have a common accretion origin linked to the recently found EriPhe OD.

  1. Dynamical modeling of tidal streams

    SciTech Connect

    Bovy, Jo

    2014-11-01

    I present a new framework for modeling the dynamics of tidal streams. The framework consists of simple models for the initial action-angle distribution of tidal debris, which can be straightforwardly evolved forward in time. Taking advantage of the essentially one-dimensional nature of tidal streams, the transformation to position-velocity coordinates can be linearized and interpolated near a small number of points along the stream, thus allowing for efficient computations of a stream's properties in observable quantities. I illustrate how to calculate the stream's average location (its 'track') in different coordinate systems, how to quickly estimate the dispersion around its track, and how to draw mock stream data. As a generative model, this framework allows one to compute the full probability distribution function and marginalize over or condition it on certain phase-space dimensions as well as convolve it with observational uncertainties. This will be instrumental in proper data analysis of stream data. In addition to providing a computationally efficient practical tool for modeling the dynamics of tidal streams, the action-angle nature of the framework helps elucidate how the observed width of the stream relates to the velocity dispersion or mass of the progenitor, and how the progenitors of 'orphan' streams could be located. The practical usefulness of the proposed framework crucially depends on the ability to calculate action-angle variables for any orbit in any gravitational potential. A novel method for calculating actions, frequencies, and angles in any static potential using a single orbit integration is described in the Appendix.

  2. Floods of August 21-24, 2007, in Northwestern and North-Central Ohio

    USGS Publications Warehouse

    Straub, David E.; Ebner, Andrew D.; Astifan, Brian M.

    2009-01-01

    Heavy rains in northwestern and north-central Ohio on August 19-22, 2007, caused severe flooding and widespread damages to residential, public, and commercial structures in the communities of Bluffton, Bucyrus, Carey, Columbus Grove, Crestline, Findlay, Mansfield, Ottawa, and Shelby. On August 27, 2007, the Federal Emergency Management Agency (FEMA) issued a notice of a Presidential declaration of a major disaster affecting Allen, Crawford, Hancock, Hardin, Putnam, Richland, Seneca, and Wyandot Counties as a result of the severe flooding. Rainfall totals for most of the flooded area were 3 to 5 in., with some locations reporting as much as 8 to 10 in. Three National Weather Service (NWS) gages in the area indicated a rainfall recurrence interval of greater than 1,000 years, and two indicated a recurrence interval between 500 and 1,000 years. Total damages are estimated at approximately $290 million, with 8,205 residences registering for financial assistance. The U.S. Geological Survey (USGS) computed flood recurrence intervals for peak streamflows at 22 streamgages and 8 ungaged sites in and around the area of major flooding. The peak streamflows at Sandusky River near Bucyrus streamgage and at seven of the eight ungaged sites had estimated recurrence intervals of greater than 500 years. The USGS located and surveyed 421 high-water marks and plotted high-water profiles for approximately 44.5 miles of streams throughout the nine communities.

  3. 40 CFR Appendix K to Subpart G of... - Substitutes Subject to Use Restrictions and Unacceptable Substitutes Listed in the July 22, 2002...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 17 2011-07-01 2011-07-01 false Substitutes Subject to Use Restrictions and Unacceptable Substitutes Listed in the July 22, 2002, Final Rule, Effective August 21, 2002 K... and Unacceptable Substitutes Listed in the July 22, 2002, Final Rule, Effective August 21, 2002 Foam...

  4. 40 CFR Appendix K to Subpart G of... - Substitutes Subject to Use Restrictions and Unacceptable Substitutes Listed in the July 22, 2002...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 18 2013-07-01 2013-07-01 false Substitutes Subject to Use Restrictions and Unacceptable Substitutes Listed in the July 22, 2002, Final Rule, Effective August 21, 2002 K... and Unacceptable Substitutes Listed in the July 22, 2002, Final Rule, Effective August 21, 2002 Foam...

  5. 40 CFR Appendix K to Subpart G of... - Substitutes Subject to Use Restrictions and Unacceptable Substitutes Listed in the July 22, 2002...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 18 2012-07-01 2012-07-01 false Substitutes Subject to Use Restrictions and Unacceptable Substitutes Listed in the July 22, 2002, Final Rule, Effective August 21, 2002 K... and Unacceptable Substitutes Listed in the July 22, 2002, Final Rule, Effective August 21, 2002 Foam...

  6. 40 CFR Appendix K to Subpart G of... - Substitutes Subject to Use Restrictions and Unacceptable Substitutes Listed in the July 22, 2002...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 18 2014-07-01 2014-07-01 false Substitutes Subject to Use Restrictions and Unacceptable Substitutes Listed in the July 22, 2002, Final Rule, Effective August 21, 2002 K... and Unacceptable Substitutes Listed in the July 22, 2002, Final Rule, Effective August 21, 2002 Foam...

  7. Response of stream-breeding salamander larvae to sediment deposition in southern Appalachian (U.S.A.) headwater streams

    Treesearch

    S. Conner Keitzer; Reuben. Goforth

    2012-01-01

    Summary 1. Increased fine sediment deposition is a prevalent threat to stream biodiversity and has been shown to impact stream-breeding salamanders negatively. However, their complex life histories make it difficult to determine which stage is affected. 2. We conducted field experiments from 26 August to 11 September 2010 and 11 October to 11...

  8. Influence of diurnal variations in stream temperature on streamflow loss and groundwater recharge

    USGS Publications Warehouse

    Constantz, Jim; Thomas, Carole L.; Zellweger, Gary W.

    1994-01-01

    We demonstrate that for losing reaches with significant diurnal variations in stream temperature, the effect of stream temperature on streambed seepage is a major factor contributing to reduced afternoon streamflows. An explanation is based on the effect of stream temperature on the hydraulic conductivity of the streambed, which can be expected to double in the 0° to 25°C temperature range. Results are presented for field experiments in which stream discharge and temperature were continuously measured for several days over losing reaches at St. Kevin Gulch, Colorado, and Tijeras Arroyo, New Mexico. At St. Kevin Gulch in July 1991, the diurnal stream temperature in the 160-m study reach ranged from about 4° to 18°C, discharges ranged from 10 to 18 L/s, and streamflow loss in the study reach ranged from 2.7 to 3.7 L/s. On the basis of measured stream temperature variations, the predicted change in conductivity was about 38%; the measured change in stream loss was about 26%, suggesting that streambed temperature varied less than the stream temperature. At Tijeras Arroyo in May 1992, diurnal stream temperature in the 655-m study reach ranged from about 10° to 25°C and discharge ranged from 25 to 55 L/s. Streamflow loss was converted to infiltration rates by factoring in the changing stream reach surface area and streamflow losses due to evaporation rates as measured in a hemispherical evaporation chamber. Infiltration rates ranged from about 0.7 to 2.0 m/d, depending on time and location. Based on measured stream temperature variations, the predicted change in conductivity was 29%; the measured change in infiltration was also about 27%. This suggests that high infiltration rates cause rapid convection of heat to the streambed. Evapotranspiration losses were estimated for the reach and adjacent flood plain within the arroyo. On the basis of these estimates, only about 5% of flow loss was consumed via stream evaporation and stream-side evapotranspiration

  9. Thermal profiles for selected river reaches of the Methow and Chewuch Rivers, Washington, August 2011

    USGS Publications Warehouse

    Gendaszek, Andrew S.

    2012-01-01

    Longitudinal profiles of near-streambed and near-surface temperatures were collected for selected reaches of the Methow and Chewuch Rivers, Washington, during August 2011 to facilitate development of a stream temperature model near the confluence of the Methow and Chewuch Rivers. Temperature was measured using a probe with an internal datalogger towed behind a watercraft moving downstream at ambient river velocity. For the Methow River, an additional temperature survey was completed using near-streambed and near-surface probes towed behind a second watercraft that traversed the channel to measure vertical and lateral temperature variability. All data were referenced to location that was concurrently measured with a Global Positioning System. Data are presented as Microsoft Excel® files consisting of date and time, water temperature, and Washington State Plane North easting and northing.

  10. Monthly energy review, July 1990

    SciTech Connect

    Not Available

    1990-10-29

    US total energy consumption in July 1990 was 6.7 quadrillion Btu Petroleum products accounted for 42 percent of the energy consumed in July 1990, while coal accounted for 26 percent and natural gas accounted for 19 percent. Residential and commercial sector consumption was 2.3 quadrillion Btu in July 1990, up 2 percent from the July 1989 level. The sector accounted for 35 percent of July 1990 total consumption, about the same share as in July 1989. Industrial sector consumption was 2.4 quadrillion Btu in July 1990, up 2 percent from the July 1989 level. The industrial sector accounted for 36 percent of July 1990 total consumption, about the same share as in July 1989. Transportation sector consumption of energy was 1.9 quadrillion Btu in July 1990, up 1 percent from the July 1989 level. The sector consumed 29 percent of July 1990 total consumption, about the same share as in July 1989. Electric utility consumption of energy totaled 2.8 quadrillion Btu in July 1990, up 2 percent from the July 1989 level. Coal contributed 53 percent of the energy consumed by electric utilities in July 1990, while nuclear electric power contributed 21 percent; natural gas, 12 percent; hydroelectric power, 9 percent; petroleum, 5 percent; and wood, waste, geothermal, wind, photovoltaic, and solar thermal energy, about 1 percent.

  11. Factors related to occurrence and distribution of selected bacterial and protozoan pathogens in Pennsylvania streams

    USGS Publications Warehouse

    Duris, Joseph W.; Reif, Andrew G.; Donna A. Crouse,; Isaacs, Natasha M.

    2013-01-01

    The occurrence and distribution of fecal indicator bacteria (FIB) and bacterial and protozoan pathogens are controlled by diverse factors. To investigate these factors in Pennsylvania streams, 217 samples were collected quarterly from a 27-station water-quality monitoring network from July 2007 through August 2009. Samples were analyzed for concentrations of Escherichia coli (EC) and enterococci (ENT) indicator bacteria, concentrations of Cryptosporidium oocysts and Giardia cysts, and the presence of four genes related to pathogenic types of EC (eaeA, stx2, stx1, rfbO157) plus three microbial source tracking (MST) gene markers that are also associated with pathogenic ENT and EC (esp, LTIIa, STII). Water samples were concurrently analyzed for basic water chemistry, physical measures of water quality, nutrients, metals, and a suite of 79 organic compounds that included hormones, pharmaceuticals, and antibiotics. For each sample location, stream discharge was measured by using standardized methods at the time of sample collection, and ancillary sample site information, such as land use and geological characteristics, was compiled. Samples exceeding recreational water quality criteria were more likely to contain all measured pathogen genes but notCryptosporidium or Giardia (oo)cysts. FIB and Giardia density and frequency of eaeA gene occurrence were significantly related to season. When discharge at a sampling location was high (>75th percentile of daily mean discharge), there were greater densities of FIB and Giardia, and the stx2, rfbO157, STII, and esp genes were found more frequently than at other discharge conditions. Giardia occurrence was likely related to nonpoint sources, which are highly influential during seasonal overland transport resulting from snowmelt and elevated precipitation in late winter and spring in Pennsylvania. When MST markers of human, swine, or bovine origin were present, samples more frequently carried the eaeA, stx2

  12. Stream salamanders as indicators of stream quality in Maryland, USA

    USGS Publications Warehouse

    Southerland, M.T.; Jung, R.E.; Baxter, D.P.; Chellman, I.C.; Mercurio, G.; Volstad, J.H.

    2004-01-01

    Biological indicators are critical to the protection of small, headwater streams and the ecological values they provide. Maryland and other state monitoring programs have determined that fish indicators are ineffective in small streams, where stream salamanders may replace fish as top predators. Because of their life history, physiology, abundance, and ubiquity, stream salamanders are likely representative of biological integrity in these streams. The goal of this study was to determine whether stream salamanders are effective indicators of ecological conditions across biogeographic regions and gradients of human disturbance. During the summers of 2001 and 2002, we intensively surveyed for stream salamanders at 76 stream sites located west of the Maryland Coastal Plain, sites also monitored by the Maryland Biological Stream Survey (MBSS) and City of Gaithersburg. We found 1,584 stream salamanders, including all eight species known in Maryland, using two 15 ? 2 m transects and two 4 m2 quadrats that spanned both stream bank and channel. We performed removal sampling on transects to estimate salamander species detection probabilities, which ranged from 0.67-0.85. Stepwise regressions identified 15 of 52 non-salamander variables, representing water quality, physical habitat, land use, and biological conditions, which best predicted salamander metrics. Indicator development involved (1) identifying reference (non-degraded) and degraded sites (using percent forest, shading, riparian buffer width, aesthetic rating, and benthic macroinvertebrate and fish indices of biotic integrity); (2) testing 12 candidate salamander metrics (representing species richness and composition, abundance, species tolerance, and reproductive function) for their ability to distinguish reference from degraded sites; and (3) combining metrics into an index that effectively discriminated sites according to known stream conditions. Final indices for Highlands, Piedmont, and Non-Coastal Plain

  13. A statistical model for estimating stream temperatures in the Salmon and Clearwater River basins, central Idaho

    USGS Publications Warehouse

    Donato, Mary M.

    2002-01-01

    A water-quality standard for temperature is critical for the protection of threatened and endangered salmonids, which need cold, clean water to sustain life. The Idaho Department of Environmental Quality has established temperature standards to protect salmonids, yet little is known about the normal range of temperatures of most Idaho streams. A single temperature standard for all streams does not take into account the natural temperature variation of streams or the existence of naturally warm waters. To address these issues and to help the Idaho Department of Environmental Quality revise the existing State temperature standards for aquatic life, temperature data from more than 200 streams and rivers in the salmon and Clearwater River Basins were collected. From these data, a statistical model was developed for estimating stream temperatures on the basis of subbasin and site characteristics and climatic factors. Stream temperatures were monitored hourly for approximately 58 days during July, August, and September 2000 at relatively undisturbed sites in subbasins in the Salmon and Clearwater River Basins in central Idaho. The monitored subbasins vary widely in size, elevation, drainage area, vegetation cover, and other characteristics. The resulting data were analyzed for statistical correlations with subbasin and site characteristics to establish the most important factors affecting stream temperature. Maximum daily average stream temperatures were strongly correlated with elevation and total upstream drainage area; weaker correlations were noted with stream depth and width and aver-age subbasin slope. Stream temperatures also were correlated with certain types of vegetation cover, but these variables were not significant in the final model. The model takes into account seasonal temperature fluctuations, site elevation, total drainage area, average subbasin slope, and the deviation of daily average air temperature from a 30-year normal daily average air temperature

  14. Practical Meteor Stream Forecasting

    NASA Technical Reports Server (NTRS)

    Cooke, William J.; Suggs, Robert M.

    2003-01-01

    Inspired by the recent Leonid meteor storms, researchers have made great strides in our ability to predict enhanced meteor activity. However, the necessary calibration of the meteor stream models with Earth-based ZHRs (Zenith Hourly Rates) has placed emphasis on the terran observer and meteor activity predictions are published in such a manner to reflect this emphasis. As a consequence, many predictions are often unusable by the satellite community, which has the most at stake and the greatest interest in meteor forecasting. This paper suggests that stream modelers need to pay more attention to the needs of this community and publish not just durations and times of maxima for Earth, but everything needed to characterize the meteor stream in and out of the plane of the ecliptic, which, at a minimum, consists of the location of maximum stream density (ZHR) and the functional form of the density decay with distance from this point. It is also suggested that some of the terminology associated with meteor showers may need to be more strictly defined in order to eliminate the perception of crying wolf by meteor scientists. An outburst is especially problematic, as it usually denotes an enhancement by a factor of 2 or more to researchers, but conveys the notion of a sky filled with meteors to satellite operators and the public. Experience has also taught that predicted ZHRs often lead to public disappointment, as these values vastly overestimate what is seen.

  15. Chemical composition of streams during low flow; Fairfax County, Virginia

    USGS Publications Warehouse

    Larson, J.D.

    1978-01-01

    Water samples were collected and stream discharges were measured at 49 sites in Fairfax County, Virginia during a period of low flow in August 1977. In addition, pesticide and metal content of residue on stream-bottom sediments from several major streams in the county were analysed. Waters from the streams in Fairfax County have generally good chemical quality during low flow. One stream in Vienna, Virginia has a high sodium chloride content, suggesting an upstream discharge of salty water. Higher concentrations of dissolved, solids reflect both the effects of geology and urbanization. Streams draining Triassic rocks in the western section of the county are characterized by the greatest natural concentration of dissolved minerals in the water. The concentrations of pesticide and metal residue associated with bottom sediments suggest a low level of pollution in the streams. One site in western Fairfax County contained above-normal levels of polychlorinated biphenyls (PCB's) in the stream sediments.

  16. Delineation of flooding within the upper Mississippi River Basin-flood of June 18 through August 4, 1993, in Des Moines and vicinity, Iowa

    USGS Publications Warehouse

    Schaap, Bryan D.

    1996-01-01

    This hydrologic investigations atlas shows the areas in and near Des Moines, Iowa, that were flooded by the Des Moines and the Raccoon Rivers and Walnut, Fourmile, and Beaver Creeks from June 18 through August 4, 1993. This map also depicts the Federal Emergency Management Agency 100-year flood boundaries. The area drained by the Des Moines River upstream from Des Moines received more than 100 percent of normal rainfall in May, June, and July, 1993. At Boone, which is located about 35 miles north-northeast of Des Moines, July rainfall was 424 percent of normal. The discharges at streamflow- gaging stations on the Des Moines River near Stratford, downstream from Saylorville Lake, and at Des Moines are shown. The cumulative discharge for inflow-gaging stations in the Des Moines area and discharge for the Des Moines River below the Raccoon River at Des Moines from July 8 through 21, 1993, are shown. The water-surface elevations of Saylorville Lake from June 18 through August 4, 1993, are shown. Profiles of the maximum water- surface elevations of the Des Moines and Raccoon Rivers during the 1993 flood in Des Moines and vicinity are higher than the respective Federal Emergency Management Agency 100- and 500-year flood profiles.

  17. Lateral inflows, stream-groundwater exchange, and network geometry influence stream water composition

    NASA Astrophysics Data System (ADS)

    Mallard, John; McGlynn, Brian; Covino, Tim

    2014-06-01

    The role of stream networks and their hydrologic interaction with hillslopes and shallow groundwater in modifying and transporting watershed signals is an area of active research. One of the primary ways that stream networks can modify watershed signals is through spatially variable stream gains and losses, described herein as hydrologic turnover. We measured hydrologic gain and loss at the reach scale using tracer experiments throughout the Bull Trout watershed in the Sawtooth Mountains of Idaho. We extended the results of reach scale experiments to the stream network using empirical relationships between (1) watershed area and stream discharge and (2) stream discharge and percent stream water loss to the groundwater system. We thus incorporate linkages between (1) hillslopes and stream networks via lateral inflows and (2) stream networks and shallow groundwater via hydrologic exchange. We implemented these relationships within a concise analytical framework to simulate hydrologic turnover across stream networks and estimate the variable influence exerted by upstream reaches and streamflow source locations on stream water composition across stream networks. Application to six natural Sawtooth watersheds and seven synthetic watersheds with varying topographic structure and stream network geometry indicated that contributions to discharge from any upstream source depend on the magnitude of the initial input, but also on the distribution of hydrologic turnover occurring along the stream network. The evolution of stream water source compositions along stream networks was unique in each watershed due to the combination of watershed structure and stream network geometry. Our results suggest that a distributed representation of hydrologic turnover at the stream network scale can improve understanding of how the stream network can modify source water compositions along the stream.

  18. Environmental Restoration Operations Consolidated Quarterly Report: July-September 2016

    SciTech Connect

    Cochran, John R.

    2017-01-01

    This Environmental Restoration Operations (ER) Consolidated Quarterly Report (ER Quarterly Report) provides the status of ongoing corrective action activities being implemented at Sandia National Laboratories, New Mexico (SNL/NM) during the July, August, and September 2016 quarterly reporting period. The Solid Waste Management Units (SWMUs) and Areas of Concern (AOCs) identified for corrective action at SNL/NM are listed in Table I-1. Sections I.2.1 and I.2.2 summarize the work completed during this quarter. Section I.2.1 summarizes the quarterly activities at sites undergoing corrective action field activities. Field activities are conducted at the three groundwater AOCs (Burn Site Groundwater [BSG AOC], Technical Area [TA]-V Groundwater [TAVG AOC], and Tijeras Arroyo Groundwater [TAG AOC]). Section I.2.2 summarizes quarterly activities at sites where the New Mexico Environment Department (NMED) issued a certificate of completion and the sites are in the corrective action complete (CAC) regulatory process. Currently, SWMUs 8 and 58, 68, 149, 154, and 502 are in the CAC regulatory process. Corrective action activities are deferred at the Long Sled Track (SWMU 83), the Gun Facilities (SWMU 84), and the Short Sled Track (SWMU 240) because these three sites are active mission facilities. These three active sites are located in TA-III.

  19. Interaction between stream temperature, streamflow, and groundwater exchanges in alpine streams

    USGS Publications Warehouse

    Constantz, J.

    1998-01-01

    Four alpine streams were monitored to continuously collect stream temperature and streamflow for periods ranging from a week to a year. In a small stream in the Colorado Rockies, diurnal variations in both stream temperature and streamflow were significantly greater in losing reaches than in gaining reaches, with minimum streamflow losses occurring early in the day and maximum losses occurring early in the evening. Using measured stream temperature changes, diurnal streambed infiltration rates were predicted to increase as much as 35% during the day (based on a heat and water transport groundwater model), while the measured increase in streamflow loss was 40%. For two large streams in the Sierra Nevada Mountains, annual stream temperature variations ranged from 0??to 25??C. In summer months, diurnal stream temperature variations were 30-40% of annual stream temperature variations, owing to reduced streamflows and increased atmospheric heating. Previous reports document that one Sierra stream site generally gains groundwater during low flows, while the second Sierra stream site may lose water during low flows. For August the diurnal streamflow variation was 11% at the gaining stream site and 30% at the losing stream site. On the basis of measured diurnal stream temperature variations, streambed infiltration rates were predicted to vary diurnally as much as 20% at the losing stream site. Analysis of results suggests that evapotranspiration losses determined diurnal streamflow variations in the gaining reaches, while in the losing reaches, evapotranspiration losses were compounded by diurnal variations in streambed infiltration. Diurnal variations in stream temperature were reduced in the gaining reaches as a result of discharging groundwater of relatively constant temperature. For the Sierra sites, comparison of results with those from a small tributary demonstrated that stream temperature patterns were useful in delineating discharges of bank storage following dam

  20. Geologic and tributary influences on the chemistry of a headwater stream

    Treesearch

    Alexander C. Wooten; James Preer; Pamela J. Edwards

    1999-01-01

    Water samples were collected weekly from June 12 to August 14, 1995, from Big Spring Run (BSR) in West Virginia. BSR originates in Big Spring Cave, where three stream samples were collected. In addition, 18 BSR sites were sampled downstream from the cave, three from its tributaries, and one above and below the stream?s confluence with Elklick Run. Along its length (653...

  1. [Professor Fredrik August Wahlgren].

    PubMed

    Jacobsson, Sten

    2006-01-01

    Fredrik August Wahlgren (1819-1877) studied medicin at the University of Lund and the Carolinska Institute in Stockholm. He took the degree "Licenciate of medicine" at the University in 1847 and the degree "Master of Surgery" at the Institute 1848 and defended his thesis for the degree "Doctor of Medicine" in Lund 1849. In the same year he started a journey to university laboratories and hospitals in Germany, France, Belgium and The Netherlands. He served as teacher in different positions and various medical disciplines, particularly in anatomy, at the Carolinska Institute and the Veterinary College in Stockholm as well as the University of Lund, where he in 1857 was appointed to professor of Zoology. He introduced comparative anatomy as a subject of zoology at the university.

  2. What's Happening in July?

    ERIC Educational Resources Information Center

    Toro, Leonor; And Others

    Designed as a teacher resource, the booklet provides brief information on eight July events: Independence Day; The Patron Saint Festivals and the Festival of Loiza, celebrated by Puerto Ricans; and the birthdays of P. T. Barnum, Elias Howe, John Quincy Adams, Luis Munoz Rivera, and Simon Bolivar. Information is provided on the Declaration of…

  3. Gulf Stream Power Characteristics near Cape Hatteras; Regional Model vs. Direct Current Observations

    NASA Astrophysics Data System (ADS)

    Lowcher, C.; Bane, J.; Gong, Y.; He, R.; Muglia, M.

    2014-12-01

    The Gulf Stream has current velocities reaching approximately 2 meters per second, which distinguish it as a potential source of marine hydrokinetic (MHK) energy. The upper continental slope off Cape Hatteras is a desirable area for development of offshore renewable energy because of the closeness of the Gulf Stream to the shelf edge and its minimal meanderings there. Using data from a moored 150-kHz ADCP and from the Mid-Atlantic Bight and South Atlantic Bight (MABSAB) ocean circulation model, MHK power characteristics have been computed for this area. These calculations quantify the Gulf Stream power resource and its temporal and spatial variations. During August 2013 - April 2014 at the moored ADCP site 30 meters below the surface and within the Stream's cyclonic shear zone, a comparison of the ADCP and MABSAB model reveals that the average current speeds from the two sources are nearly identical and have a magnitude of 1.15 m/s. A comparison for the same time period was made for Betz power, which yielded an observed average of 0.8 kW/m2 and a model average of 0.7 kW/m2, a difference of about 13%. The model has shown to be more conservative than the ADCP in its computation of current speed and Betz power, and it shows somewhat less variability than the ADCP in directionality of the Stream. Additionally, model data have been used to calculate annual average vector velocities and yearly Betz power averages for a number of years, and at various locations over the NC continental slope. These results depict the variation of the Stream's position along the NC coastline over the most recent years, and show that yearly averaged Betz power at a given location has significant inter-annual variations, with average power during one year being nearly four times greater than in another year.

  4. Semi-annual sampling of Fourmile Branch and its seeplines in the F and H Areas of SRS: July 1992

    SciTech Connect

    Dixon, K.L.; Rogers, V.A.

    1994-04-01

    In July 1992, water samples were collected from Fourmile Branch (FMB) and its seeplines in the vicinity of the F and H-Area seepage basins. The samples were collected from five seepline locations in F Area, five seepline locations in H Area, and three stream locations on FMB. The sampling event was the first in a series of three semi-annual sampling event was the first in a series of three semi-annual sampling events aimed at characterizing the shallow groundwater outcropping into FMB and its wetlands. In the past, this groundwater has been shown to contain contaminants migrating from the F- and H-Area seepage basins. The samples were analyzed for Appendix 9 metals, various radionuclides, selected volatile compounds, and selected inorganic constituents and parameters. Results from the July 1992 sampling event suggest that the seeplines in both F and H Areas and FMB continue to be influenced by contaminants migrating from the F- and H-Area seepage basins. However, when compared to 1989 measurements, the concentrations of most of the constituents have declined. Contaminant concentration measured in July 1992 were compared to primary drinking water standards (PDWS), secondary drinking water standards (SDWS), and maximum contaminant levels (MCL) enforceable in 1993. Results were also compared to 1989 measurements at corresponding sampling locations and to background samples collected as part of the July 1992 sampling event. Using two different statistical tests, concentrations of selected F- and H-Area seepline analytes were compared to background samples. These tests were designed to detect if concentrations of contaminants along the F- and H-Area seeplines were greater than background concentrations.

  5. Streaming Prominence

    NASA Image and Video Library

    2017-07-05

    A prominence at the edge of the sun provided us with a splendid view of solar plasma as it churned and streamed over less than one day (June 25-26, 2017). The charged particles of plasma were being manipulated by strong magnetic forces. When viewed in this wavelength of extreme ultraviolet light, we can trace the movements of the particles. Such occurrences are fairly common but much easier to see when they are near the sun's edge. For a sense of scale, the arch of prominence in the still image has risen up several times the size of Earth. Movies are available at https://photojournal.jpl.nasa.gov/catalog/PIA21768

  6. Providing a USSD location based clinic finder in South Africa: did it work?

    PubMed

    Parsons, Annie Neo; Timler, Dagmar

    2014-01-01

    A new mHealth service, Clinic Finder, was designed to provide a location-based service for any cellphone user in South Africa dialing a dedicated USSD string to find the nearest public primary health care facility. The service was funded by a European Union grant to Cell-Life to support the National Department of Health. Clinic Finder's aims were to provide a reliable and accurate service, and to assess both the most effective means of advertising the service as well as interest in the service. Users dialing the USSD string are asked to agree to geo-location (Vodacom and MTN users) or asked to enter their province, town and street (virtual network users and those choosing not to geo-locate). The service provider, AAT, sends the data to Cell-Life where an SMS with details of the nearest public primary health care facility is sent to the user by Cell-Life's open-source Communicate platform. The service was advertised on 3 days in 2014 using two different means: a newspaper ad on 20 May 2014 and Please Call Me ads on 30 July 2014 and 14 August 2014. 28.2% of unique users on 20 May 2014, 10.5% of unique users on 30 July 2014 and 92.8% of unique users on 14 August 2014 who agreed to geo-location successfully received SMSs. However, only 4.2%, 0.5%, and 2.4% of unique users responding to each advertisement who did not geo-locate then received an SMS. A small survey of users following the 20 May 2014 newspaper ad found overall interest in the idea of Clinic Finder, though unsuccessful users were more likely to dislike the service. The overall experience of using location based services and USSD for Clinic Finder suggests a need in the field of mHealth for wider availability of data on service usability and effectiveness.

  7. Location Privacy

    NASA Astrophysics Data System (ADS)

    Meng, Xiaofeng; Chen, Jidong

    With rapid development of sensor and wireless mobile devices, it is easy to access mobile users' location information anytime and anywhere. On one hand, LBS is becoming more and more valuable and important. On the other hand, location privacy issues raised by such applications have also gained more attention. However, due to the specificity of location information, traditional privacy-preserving techniques in data publishing cannot be used. In this chapter, we will introduce location privacy, and analyze the challenges of location privacy-preserving, and give a survey of existing work including the system architecture, location anonymity and query processing.

  8. 6. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. Historic American Buildings Survey Frank O. Branzetti, Photographer July 8, 1940 (aa) 5- MILE STONE, CENTRE & SOUTH STS., ROXBURY - Milestones D, Y, Z, AA, BB, FF & NN, Various Roxbury locations, Roxbury, Suffolk County, MA

  9. 7. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. Historic American Buildings Survey Frank O. Branzetti, Photographer July 8, 1940 (bb) 6- MILE STONE, CENTRE ST., opp. ALLANDALE ST., ROXBURY - Milestones D, Y, Z, AA, BB, FF & NN, Various Roxbury locations, Roxbury, Suffolk County, MA

  10. 5. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. Historic American Buildings Survey Frank O. Branzetti, Photographer July 8, 1940 (ff) 4- MILE STONE, opp. 862 HUNTINGTON AVE., ROXBURY - Milestones D, Y, Z, AA, BB, FF & NN, Various Roxbury locations, Roxbury, Suffolk County, MA

  11. 3. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. Historic American Buildings Survey Frank O. Branzetti, Photographer July 10, 1940 (eee) 71/4m. 50r. STONE, HANCOCK ST., QUINCY - Milestones H, I, CCC, DDD & EEE, Various Quincy locations, Quincy, Norfolk County, MA

  12. 2. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. Historic American Buildings Survey Frank O. Branzetti, Photographer July 9, 1940 (ccc) 6- MILE STONE, opp. 487 HANCOCK ST., QUINCY - Milestones H, I, CCC, DDD & EEE, Various Quincy locations, Quincy, Norfolk County, MA

  13. 1. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. Historic American Buildings Survey Frank O. Branzetti, Photographer July 9, 1940 (ddd) 6- MILE STONE, at 540 HANCOCK ST., QUINCY - Milestones H, I, CCC, DDD & EEE, Various Quincy locations, Quincy, Norfolk County, MA

  14. 5. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. Historic American Buildings Survey Frank O. Branzetti, Photographer July 10, 1940 (i) 10- MILE STONE, 1187 HANCOCK ST., QUINCY - Milestones H, I, CCC, DDD & EEE, Various Quincy locations, Quincy, Norfolk County, MA

  15. 4. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. Historic American Buildings Survey Frank O. Branzetti, Photographer July 10, 1940 (h) 9- MILE STONE, ADAMS ST., QUINCY - Milestones H, I, CCC, DDD & EEE, Various Quincy locations, Quincy, Norfolk County, MA

  16. 3. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. Historic American Buildings Survey Frank O. Branzetti, Photographer July 17, 1940 (d) 4- MILE STONE, 471 BLUE HILL AVE., ROXBURY - Milestones D, Y, Z, AA, BB, FF & NN, Various Roxbury locations, Roxbury, Suffolk County, MA

  17. 232. Photocopied July 1978. (QMC) 'CLERK'S HOUSE, QUINCY MINE, 1890.' ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    232. Photocopied July 1978. (QMC) 'CLERK'S HOUSE, QUINCY MINE, 1890.' FRONT ELEVATION, FIRST AND SECOND FLOOR PLANS. LOCATED ON LOT SOUTH OF QMC MINING OFFICE. - Quincy Mining Company, Hancock, Houghton County, MI

  18. 6. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. Historic American Buildings Survey Frank O. Branzetti, Photographer July 23, 1940 (b) 7- MILE STONE, opp. 1040 ADAMS ST., DORCHESTER - Milestones A, B, E, HHH, III & PPP, Various Dorchester locations, Dorchester, Suffolk County, MA

  19. 9. Historic American Buildings Survey W. N. Manning, Photographer, July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. Historic American Buildings Survey W. N. Manning, Photographer, July 19, 1935. MANTEL IN N. W. ROOM. - Seale-Mosley House, County Road 40 (moved from original location), Peachburg, Bullock County, AL

  20. 273. Photocopied July 1978. (QMC) 'DISPENSARY, AUG. 29, 1921.' FIRST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    273. Photocopied July 1978. (QMC) 'DISPENSARY, AUG. 29, 1921.' FIRST AND SECOND FLOOR PLANS. DRAWN FROM THREE EARLIER DRAWINGS, 1917-21. LOCATED WEST OF ROUTE 41, BEHIND DOCTOR'S HOUSE. - Quincy Mining Company, Hancock, Houghton County, MI

  1. 233. Photocopied July 1978. (QMC) 'PLANS AND ELEVATIONS OF DOCTOR'S ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    233. Photocopied July 1978. (QMC) 'PLANS AND ELEVATIONS OF DOCTOR'S HOUSE. QUINCY MINE. AUG. 1901.' ILLUSTRATES ALTERATIONS TO AN EXISTING BUILDING. LOCATED WEST SIDE OF ROUTE 41, SOUTH OF QMC OFFICE. - Quincy Mining Company, Hancock, Houghton County, MI

  2. 2. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. Historic American Buildings Survey Frank O. Branzetti, Photographer July 23, 1940 (hhh) 5- MILE STONE, 879 BLUE HILL AVE., DORCHESTER - Milestones A, B, E, HHH, III & PPP, Various Dorchester locations, Dorchester, Suffolk County, MA

  3. 4. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. Historic American Buildings Survey Frank O. Branzetti, Photographer July 23, 1940 (iii) 6- MILE STONE, opp. 1280 BLUE HILL AVE., DORCHESTER - Milestones A, B, E, HHH, III & PPP, Various Dorchester locations, Dorchester, Suffolk County, MA

  4. 1. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. Historic American Buildings Survey Frank O. Branzetti, Photographer July 9, 1940 (a) 4- MILE STONE, POND ST., DORCHESTER - Milestones A, B, E, HHH, III & PPP, Various Dorchester locations, Dorchester, Suffolk County, MA

  5. 3. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. Historic American Buildings Survey Frank O. Branzetti, Photographer July 23, 1940 (e) 6- MILE STONE, POND ST., DORCHESTER - Milestones A, B, E, HHH, III & PPP, Various Dorchester locations, Dorchester, Suffolk County, MA

  6. 5. Historic American Buildings Survey Frank O. Branzetti, Photographer July ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. Historic American Buildings Survey Frank O. Branzetti, Photographer July 17, 1940 (ppp) 7- MILE STONE, 1411 BLUE HILL AVE., DORCHESTER - Milestones A, B, E, HHH, III & PPP, Various Dorchester locations, Dorchester, Suffolk County, MA

  7. WADEABLE STREAMS ASSESSMENT | Science Inventory ...

    EPA Pesticide Factsheets

    This Wadeable Streams Assessment (WSA) provides the first statistically defensible summary of the condition of the nation’s streams and small rivers, which are so integrally tied to our history. This report brings the results of this ground-breaking study to the American public.This assessment encompasses the wadeable streams and rivers that account for a vast majority of the length of flowing waters in the United States. To perform this assessment, EPA, the states, and tribes collected chemical, physical, and biological data at more 1,392 wadeable perennial stream locations to determine the biological condition of these waters and the most important factors affecting their water quality. Teams collected samples at sites chosen using an innovative statistical design to ensure representative results. The results of this analysis provide a clear assessment of the biological quality of wadeable, perennial streams and rivers across the country, within each of three major climatic and landform regions, and nine ecological regions. Information provided in this report fills an important gap in meeting the requirements of the CWA. The purpose of this assessment is fourfold: 1. Report on the ecological condition of all wadeable, perennial streams and rivers within the conterminous United States. (Pilot projects are underway in Alaska and Hawaii.) 2. Describe the biological condition of these systems using direct measures of aquatic life. Assessments of stream

  8. 20. Photocopied August 1978. CANAL SECTION III, LOOKING SOUTH, AUGUST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    20. Photocopied August 1978. CANAL SECTION III, LOOKING SOUTH, AUGUST OR SEPTEMBER 1900, FOLLOWING A MAJOR BANK SLIDE. SLIDES LIKE THIS ONE WERE FAIRLY FREQUENT FOLLOWING RAIN STORMS BEFORE THE CANAL WALLS WERE TIMBER LINED IN THE EARTH SECTIONS. (64) - Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie, Chippewa County, MI

  9. 24. Photcopied August 1978. SECTION I LOOKING EAST, AUGUST 25, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    24. Photcopied August 1978. SECTION I LOOKING EAST, AUGUST 25, 1901. POWER COMPANY CREWS ARE AT WORK CONSTRUCTING A MASONRY WALL ON THE LEFT SIDE WHERE THE ROCK FALLS WELL BELOW THE PROJECTED WATER LINE. ALREADY COMPLETED MASONRY RETAINING WALLS ARE VISIBLE ALONG THE RIGHT BANK OF THE CANAL. (172) - Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie, Chippewa County, MI

  10. 16. Photocopied August 1978. CANAL SECTION I, LOOKING EAST, AUGUST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    16. Photocopied August 1978. CANAL SECTION I, LOOKING EAST, AUGUST 21, 1900. NOTE THE DUMP TRAIN ENGINES PUSHING THE TRAIN OF DUMP CARS AWAY FROM THE STEAM SHOVEL. (62) - Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie, Chippewa County, MI

  11. GT-MHR COMMERCIALIZATION STUDY TECHNICAL PROGRESS AND COST MANAGEMENT REPORT FOR THE PERIOD AUGUST 1 THROUGH AUGUST 31, 2003

    SciTech Connect

    SHENOY, A.S.

    2003-08-01

    OAK A271 GT-MHR COMERCIALZATION STUDY TECHNICAL PROGRESS AND COST MANAGEMENT REPORT FOR THE PERIOD AUGUST 1 THROUGH AUGUST 31, 2003. In the process of fabricating the MHR-1 irradiation test capsule, Petten has advised that three thermocouples (out of 24) and the Self Powered Neutron detector were damaged during high temperature brazing with the upper capsule lid. Procurement of new TCs and SPN is in process but there will be a delay in the irradiation test of about nine weeks. Startup of the irradiation is now projected to be July or August 2004. In preparation for performing the nuclear design analysis activities required by the advanced fuel studies task, a complete 3-D nuclear design analysis is first being performed of the GT-MHR reference design. This will serve as the baseline for studies of the advanced fuel nuclear design performance.

  12. Geochemistry of Red Mountain Creek, Colorado, under low-flow conditions, August 2002

    USGS Publications Warehouse

    Runkel, Robert L.; Kimball, Briant A.; Walton-Day, Katherine; Verplanck, Philip L.

    2005-01-01

    Red Mountain Creek, an acid mine drainage stream in southwestern Colorado, was the subject of a synoptic study conducted in August 2002. During the synoptic study, a solution containing lithium chloride was injected continuously to allow for the calculation of streamflow using the tracer-dilution method. Synoptic water-quality samples were collected from 48 stream sites and 29 inflow locations along a 5.4-kilometer study reach. Data from the study provide profiles of pH, concentration, and mass load with a high degree of spatial resolution. Despite the presence of 10 circumneutral inflows, pH remained below 3.4 at all stream sites. Concentration profiles indicate that dissolved concentrations of aluminum, cadmium, copper, lead, and zinc exceed chronic aquatic-life standards established by the State of Colorado along the entire study reach. Comparison of total recoverable and dissolved concentrations suggests that most constituents were transported conservatively. Exceptions to this pattern include arsenic, iron, molybdenum, and vanadium, four constituents that were subject to precipitation and(or) sorption reactions as the addition of a circumneutral tributary resulted in a slight increase in instream pH. Evaluation of data from the 29 inflow locations indicates a sharp contrast between the east and west sides of the watershed; inflows from the east side have high constituent concentrations and acidic pH, whereas inflows from the west side have lower concentrations and generally higher pH. Loading profiles, the product of streamflow and concentration, are used to rank potential sources of metals and acidity within the watershed. Four sources account for 83, 72, 70, 69, 64, and 61 percent of the aluminum, iron, arsenic, zinc, copper, and cadmium loading within the study reach, respectively. All four sources appear to be the result of surface inflows that have been affected by mining activities. The relatively small number of major sources and the fact that they are

  13. Location | FNLCR

    Cancer.gov

    The Frederick National Laboratory for Cancer Research campus is located 50 miles northwest of Washington, D.C., and 50 miles west of Baltimore, Maryland, in Frederick, Maryland. Satellite locations include leased and government facilities extending s

  14. Methods for estimating drought streamflow probabilities for Virginia streams

    USGS Publications Warehouse

    Austin, Samuel H.

    2014-01-01

    Maximum likelihood logistic regression model equations used to estimate drought flow probabilities for Virginia streams are presented for 259 hydrologic basins in Virginia. Winter streamflows were used to estimate the likelihood of streamflows during the subsequent drought-prone summer months. The maximum likelihood logistic regression models identify probable streamflows from 5 to 8 months in advance. More than 5 million streamflow daily values collected over the period of record (January 1, 1900 through May 16, 2012) were compiled and analyzed over a minimum 10-year (maximum 112-year) period of record. The analysis yielded the 46,704 equations with statistically significant fit statistics and parameter ranges published in two tables in this report. These model equations produce summer month (July, August, and September) drought flow threshold probabilities as a function of streamflows during the previous winter months (November, December, January, and February). Example calculations are provided, demonstrating how to use the equations to estimate probable streamflows as much as 8 months in advance.

  15. River restoration and biocoenoses improvement in two streams renaturated using bioengeneering.

    NASA Astrophysics Data System (ADS)

    Leoni, B.; Forasacco, E.; Dobner, R.; Cotta Ramusino, M.

    2003-04-01

    The Bioengineering is a constructive discipline having its own technical, ecological and environmental friendly scopes, by using living materials. The aim of this study is to assess the river restoration efficiency of Bioengineering. The basic goals of many management-concepts are the integrity of the river habitat, self-regulation and self-regeneration, the preservation of intact resources, to recreate the uniqueness, diversity and beauty of natural river landscape. From an ecological point of view the richness, diversity and age composition of the populations developing after restoration as a result of habitat improvement reveal the degree to which comprehensive concepts were applied (Jungwirth et al., 1995). The following results summarised an investigation on streams Boesio and Rancina in Valcuvia, (Varese, Northern Italy). These streams are characterised by human impacts like water pollution, river engineering and river bioengineering (palificata doppia viva). The samples of macrobenthic fauna were collected between August 2000 and July 2001 in 4 stations for each stream, where the 3rd station of Boesio and Rancina streams is characterised by bioengeneering measure, using a Surber sampler (0.125 m2, mesh size 0.45 mm). The zoobenthic communities of these pre-alpine streams are characterised by low richness and diversity and few families and genera were predominant. In Rancina stream, Ephemeroptera (genus Baetis), Trichoptera (families Hydropsychidae, Limnephilidae and Rhyacophilidae) and Diptera (families Chironomidae and Simuliidae) are present throughout the year with significant densities. The faunal composition of Boesio stream is similar. It differs, only, from stream Rancina to costant presence of Plecoptera with genus Leuctra. To evaluate the restoration of environmental quality two indices were applied: Indice Biotico Esteso (I.B.E.- Ghetti, 1995); Indice di Funzionalità Fluviale (I.F.F.- Siligardi, 2000). The E.B.I. scores of Boesio stream indicate

  16. Operative Intervention of Supracondylar Humerus Fractures More Complicated in July: Analysis of the July Effect.

    PubMed

    Bagsby, Deren T; Loder, Randall T; Myung, Karen

    2017-06-01

    The "July Effect" involves the influx of new interns and residents early in the academic year (July and August), which may have greater potential for poorer patient outcomes. Current orthopaedic literature does not demonstrate the validity of this concept in arthroplasty, spine, hand, and arthroscopy. No study has investigated the possibility of this effect on common pediatric orthopaedic procedures, such as closed reduction and percutaneous pin fixation of supracondylar humerus fractures. A retrospective review of all type II or III supracondylar humerus fractures that underwent primary closed reduction and percutaneous pin fixation (CPT code 24538) at a single pediatric level 1 trauma center from July 2009 to June 2013. Patients were grouped according to time in the academic year: early (July and August) and late (May and June). Demographic data included length of follow-up, age at surgery, sex, side of injury, and Wilkin's modified Gartland classification. Outcomes included length of operation, number of pins used, length of stay, complications, and the need for repeat surgery. There were 245 patients, 101 in the early and 144 in the late group. There was no increase in surgical time [33.32±24.74 (early) vs. 28.63±10.06 (late) min, P=0.07) or complication rates [7.0% (early) vs. 2.1% (late), P=0.06) between the early and the late groups. Cases performed with junior residents demonstrated longer operative (31.72±17.07 vs. 28.96±18.71 min, P=0.02) and fluoroscopy (48.63±30.96 vs. 34.12±27.38 s, P=0.01) times. The academic orthopaedic surgeon must ensure the education of residents, while providing the highest level of safety to patients. Our study shows that education of young residents early in the academic year results in no increase in operative times, radiation exposure, or complications. Level III.

  17. Results of the F/H Effluent Treatment Facility biological monitoring program, July 1987--July 1991

    SciTech Connect

    Specht, W.L.

    1992-07-01

    As required by the South Carolina Department of Health and Environmental Control (SCDHEC) under NPDES Permit SCO000175, biological monitoring was conducted in Upper Three Runs Creek to determine if discharges from the F/H Effluent Treatment Facility have adversely impacted the biotic community of the receiving stream. Data included in this summary report encompass July 1987 through July 1991. As originally designed, the F/H ETF was not expected to remove all of the mercury from the wastewater; therefore, SCDHEC specified that studies be conducted to determine if mercury was bioaccumulating in aquatic biota. Subsequent to approval of the biological monitoring program, an ion exchange column was added to the F/H ETF specifically to remove mercury, which eliminated mercury from the F/H ETF effluent. The results of the biological monitoring program indicate that at the present rate of discharge, the F/H ETF effluent has not adversely affected the receiving stream with respect to any of the parameters that were measured. The effluent is not toxic at the in-stream waste concentration and there is no evidence of mercury bioaccumulation.

  18. Maintenance Downtime August 14, 2013

    Atmospheric Science Data Center

    2013-08-14

    Date(s):  Wednesday, August 14, 2013 Time:  7:00 am - 1:00 pm EST Event Impact:  Due to scheduled maintenance on Wednesday, August 14, 2013: • Connection the the ASDC website will be unavailable from 8 ...

  19. Greenhouse Gas Dynamics in Streams and Riparian Floodplains located within Forested Landscapes of the US Northeast: Impact of Key Floodplain Geomorphic Features on Greenhouse Gas Production in a Forested Watershed in Northern New York State, USA.

    NASA Astrophysics Data System (ADS)

    Serchan, S. P.; Vidon, P.

    2015-12-01

    This study measured dissolved greenhouse gas (GHG) concentrations in interstitial water and stream across various "hotspots" in headwater catchments of Archer Creek watershed, New York, USA. Results indicated that stream water was hyper saturated with methane (CH4), and moderately saturated with carbon dioxide (CO2), and nitrous oxide (N2O). The values of dissolved CO2 (88.3 μmol/L), dissolved CH4 (1.2 μmol/L), and dissolved N2O (0.02 μmol/L) found in the stream were 5.8, 432, and 2.3 times in excess of atmospheric equilibrium, respectively. Results of dissolved GHG measured in interstitial water across various sites: riparian dry (RZ-Dry), riparian wet (RZ-Wet), riparian mucky (RZ-Mucky), pool with fine textured bed sediments (IS-fine-sedpool), pool with coarse textured bed sediments (IS-coarse-sed-pool), and riffles (Riffle) indicated high variations in the degree of saturation of all three GHG. RZ-Mucky, RZ-Wet, and IS-fine-sedpool sites were hotspots of CH4 and CO2 relative to other sites. RZ-Dry sites were hotspots of N2O. Multiple linear regression models indicated that dissolved oxygen (D.O.) and dissolved organic carbon (DOC) influenced dissolved CO2 and CH4 at most of the sites. Relationships between dissolved N2O and predictor variables were highly variable across all sites. Patterns of dissolved N2O in relatively oxic RZ-Dry sites (D.O. 5.3 mg/L) were positively correlated with nitrate (NO3) indicating nitrification as a dominant process in N2O production. In contrast, patterns of dissolved N2O were positively correlated with ammonium (NH4+) at RZ-Wet and RZ-Mucky sites where concentrations of D.O. were significantly lower compared to other sites.

  20. The contribution of glacier melt to stream flow in the Wind River Range, WY

    NASA Astrophysics Data System (ADS)

    Cable, J. M.; Williams, D. G.; Bachman, S. A.

    2008-12-01

    The Wind River Range (Wyoming) boasts the largest concentration of glaciers in the American Rockies, and together with adjacent mountain ranges is the source of several major river systems in the western US. Declines in the volume of these glaciers associated with recent climate warming are well documented. Such declines of alpine glaciers will reduce the amount of water available for agricultural and domestic use, especially in late summer and fall. The contribution of glacial melt to stream flow remains largely unquantified in many parts of the U.S., particularly in Wyoming. In this study, we estimated the fractional contribution of glacier melt water from Dinwoody Glacier to flow in Dinwoody Creek in the Wind River Range on diurnal, seasonal, and interannual time scales. The stable isotope composition of water from the Dinwoody Creek watershed was determined on spatially and temporally intensive scales in 2007 and 2008. Spatially intensive sampling took place in the summers of both years; water samples were collected from (1) above and below major confluences along Dinwoody Creek, from (2) Dinwoody Glacier, (3) rain water, and (4) snow. Stream samples were collected over the entire melt season using an automated stream sampler placed beside an unimpaired USGS gauging station low in the watershed. Glacial melt contributed significantly to stream flow during periods of peak daily discharge (afternoon) and during late summer peak flow (late-August). In 2008, snow persisted late into the summer, so snowmelt was the main source of streamflow in mid-summer (July). Disappearance of glaciers in this watershed will affect both ecosystem and human water supplies during the late summer period, particularly in years when snowfields do not persist late into the summer.

  1. Floods of August 1967 in east-central Alaska

    USGS Publications Warehouse

    Childers, Joseph M.; Meckel, James P.; Anderson, Gary S.

    1972-01-01

    East-central Alaska had record floods near Fairbanks following extensive rains of August 8-20, 1967. Precipitation during this period totaled as much as 10 inches, which is close to the average annual precipitation for this area. The most extensive flooding occurred in the White Mountains northeast of Fairbanks and along the major streams draining those mountains. Some of the major streams flooded were the Salcha, Chena, Chatanika, Tolovana, and lower Tanana Rivers, and Birch Creek west of Circle. Peak discharges on some streams in the flood area were from two to four times the probable 50-year flood. The peak discharge of 74,400 cubic feet per second of the Chena River at Fairbanks, from 1,980 square miles of drainage area, was 2.6 times the 50-year flood. The rise of ground-water levels in the Tanana River flood plain to the land surface during the flood caused foundation failures and prevented drainage of subsurface structures. Above-normal ground-water levels existed until the middle of September. Total flood damage was estimated in excess of $85 million. Six lives were reported lost, and about 12,000 persons were evacuated during the flood. This report has been prepared to furnish hydrologic data for development planning. Included are discussions of antecedent streamflow, meteorology of the storm, descriptions of floods, flood damage, flood frequency, ground-water conditions, and stages and discharges of major streams for August 1967.

  2. Gulf Stream marine hydrokinetic energy resource characterization off Cape Hatteras, North Carolina

    NASA Astrophysics Data System (ADS)

    Muglia, M.; He, R.; Lowcher, C.; Bane, J.; Gong, Y.; Taylor, P.

    2015-12-01

    The Gulf Stream off North Carolina has current velocities that approach 3 m/s and an average volume transport of 90 Sv (1 Sv= 106 m3/s) off of Cape Hatteras, making it the most abundant MHK (Marine Hydrokinetic Energy) resource for the state. Resource availability at a specific location depends primarily on the variability in Gulf Stream position, which is least offshore of Cape Hatteras after the stream exits the Florida Straits. Proximity to land and high current velocities in relatively shallow waters on the shelf slope make this an optimal location to quantify the MHK energy resource for NC. 3.5 years of current measurements beginning in August of 2013 from a moored 150 kHz ADCP (Acoustic Doppler Current Profiler) at an optimal location for energy extraction quantify the available energy resource and its variability, and establish the skill of a Mid-Atlantic Bight and South Atlantic Bight Regional Ocean Model in predicting the MHK energy resource. The model agrees well with long-term observed current averages and with weekly to monthly fluctuations in the current speeds. Model and observations over the first 9 months of the ADCP deployment period both averaged 1.15 m/s thirty meters below the surface. The model under estimates observed current speeds for the higher frequency current fluctuations of days to weeks. Comparisons between the model and ADCP observed currents, and velocity derived power density over the entire 3.5 years of observations demonstrate the significant inter-annual variability in power density. Shipboard 300 kHz ADCP cross-stream transects and hourly surface currents measurements off Cape Hatteras from a network of land based HF (high frequency) radars further quantify available MHK energy and assess model skill. Cross-stream transects were made with a vessel-mounted 300 kHz ADCP on a line from the 100-1000m isobaths, and measured currents in the top 100m. These measurements demonstrate the variability in the resource with water depth, and

  3. In-stream production of methylmercury in a northern California river during summer baseflow

    NASA Astrophysics Data System (ADS)

    Tsui, M. T.; Finlay, J. C.; Nollet, Y. H.; Balogh, S. J.

    2009-12-01

    In stream ecosystems, it is well established that terrestrial landscape features such as wetlands are important in determining the aqueous concentration and flux of methylmercury. In contrast, our understanding of in-stream production of methylmercury is inadequate, especially on an ecosystem scale. In this study, we examined the relationship between the net production of dissolved methylmercury and algal metabolism in an 8-km reach of a third order stream (South Fork Eel River) in northern California. The stream has a forested watershed with no wetlands and has a long period of baseflow that typically extends from late May to early October. There was an intense rainfall in early May, 2009, but no major precipitation was recorded afterward, as is typical of Mediterranean climate of the study site. We collected surface water samples along the main channel and four major tributaries to the study stream reach. Temporal patterns of algal metabolism were inferred from net changes in total dissolved phosphorus and silica uptake and algal abundance. There was essentially no net production of methylmercury within the study reach (~ 0 µg Hg/km/d) in mid-May but net production of methylmercury occurred afterward when discharge declined exponentially, water temperature increased and algal metabolism increased (i.e. phosphorus and silica were taken up biologically). Net production of dissolved methylmercury peaked in mid-June (100 µg Hg/km/d) and then declined in mid-July (58 µg Hg/km/d) and mid-August (45 µg Hg/km/d) within the 8-km reach. The absence of surface runoff during the summer (e.g. June through September) indicates that the observed net production of methylmercury occurred within the channel and algal metabolism is coupled to the mercury methylation process. In summary, our study suggests that, in addition to watershed features, in-stream production of methylmercury should be considered as an important factor mediating mercury bioavailability in flowing waters

  4. Dense Pyroclastic Flows of the 16 -17 August 2006 Eruption of Tungurahua Volcano, Ecuador

    NASA Astrophysics Data System (ADS)

    Hall, M. L.; Mothes, P. A.; Ramon, P.; Arellano, S.; Barba, D.; Palacios, P.

    2007-05-01

    The 16-17 August 2006 eruption of Tungurahua volcano in central Ecuador was preceded by 7 years of threatening activity and finally a VEI=2 eruption on 14-15 July 2006. The larger August eruption witnessed tens of pyroclastic flows that descended 17 different channels up to 8.5 km to the volcano's base on the NW, N, W, and SW sides. Tungurahua (5023m) is a steep-sided, low SiO2 andesitic volcano with 2600 to 3200m of relief. The initial, small nuee ardentes began around 1700hr (local time), the larger flows occurred between 2147hr and 0100hr (17 Aug.), and a total of 31 events were indicated by seismic signals. The deposits of three distinct flow cycles are recognized at the NW base of the cone. On the Los Pajaros depositional fan, deposits of flows 1 and 2 are widespread laterally (<600m) and have low-aspect morphologies with low snouts and without levees. Their outer surfaces are covered with accessory > juvenile clasts that mainly range from 15 to 25cm in diameter, conversely their interiors are comprised of 40-42% clasts of 1-25cm size and a matrix (58-60%) of sand-size grains. The earlier flow 1 was accompanied by an ash cloud surge that leveled, but did not scorch, all trees, brush, even metal antenna posts, leaving a 1-10cm thick sandy ash layer upon flow 1's deposit. On the fan as well as in gullies on the upper flanks, flow 3 deposits form long narrow lobes with 1-2m high frontal snouts that are followed by empty flow channels, 5-15m wide, bounded by parallel levees 1-1.5m high. Within these channels subsequent flow lobes are found as remnant pulses. Unlike flows 1 and 2, flow 3 lobes are covered with 0.5-3m cauliflower-shaped, slightly vesiculated bombs that are rarely abraded; the deposit's interior has a 45% sandy matrix. During the climatic eruptive phase continuous lava fountaining, 500-700m high, and crater spilling likely fed a continual stream of fragmented lava onto the cone's upper steep flanks, from which dense pyroclastic mass flows were

  5. A Review of the July 2006 Heat Wave in California

    NASA Astrophysics Data System (ADS)

    Edwards, L. M.; Kozlowski, D.; Bair, A.; Juskie, J.; Blier, W.; O'Hara, B.

    2006-12-01

    A record-breaking heat wave affected much of the state of California during the period from Sunday, July 16 through Wednesday, July 26, 2006. Although numerous daily maximum temperature records were set, the aspect that made this event unique was the elevated overnight minimum temperatures that easily surpassed previous daily, or even all-time, high minimum temperatures at several reporting stations. This was especially true in the southern Sacramento Valley and much of the San Joaquin Valley. Along with the intensity of this heat wave, the duration of abnormally high maximum and minimum temperatures was particularly noteworthy. This event impacted California's economy, energy supply and health. An all-time record for statewide energy consumption was reached on July 24, 2006 with 50,270 Megawatts. 131 heat-related deaths were reported. Given these impacts and the numerous temperature records set across the state, this is a significant historical event when put in perspective with other summertime heat waves. This case study entailed an analysis of the synoptic meteorological factors of the heat wave, and a comparison to climatology for the period. Particular interest was given to the peak of the event, which spanned Friday, July 21 to Monday, July 24. Also, a comparison was made to a recent heat wave event that took place August 8-16, 1996. In general, an expansion to the west and north of the 500mb semi-permanent 4- corners high brought above normal heights to the state of California. This abnormally strong upper high was only part of a northern hemispheric amplified pattern, which was slow to transition. Associated with this upper high expansion was an unseasonably warm airmass settling over the region through the duration of the event, with an influx of monsoonal moisture from lower latitudes near the Gulf of California and Baja California. Typical mid-level winds from the southwest to west shifted to the southeast to south. This allowed for maximum transport of

  6. River and Stream Pollution

    MedlinePlus

    ... Coloring Science Experiments Stories Lessons River and Stream Pollution Kids Homepage Topics Pollution River and Stream Pollution ... stream in the first place by disturbing the land as little as possible. Farmers and construction workers ...

  7. 78 FR 36656 - Safety Zone; Coronado Fourth of July Fireworks, Glorietta Bay; Coronado, CA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-19

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Coronado Fourth of July Fireworks... Fourth of July Fireworks on July 4, 2013. This temporary safety zone is a modification of an existing permanent safety zone, made due to a change in location of the fireworks barge. The safety zone is...

  8. Dynamical Modelling of Meteoroid Streams

    NASA Astrophysics Data System (ADS)

    Clark, David; Wiegert, P. A.

    2012-10-01

    Accurate simulations of meteoroid streams permit the prediction of stream interaction with Earth, and provide a measure of risk to Earth satellites and interplanetary spacecraft. Current cometary ejecta and meteoroid stream models have been somewhat successful in predicting some stream observations, but have required questionable assumptions and significant simplifications. Extending on the approach of Vaubaillon et al. (2005)1, we model dust ejection from the cometary nucleus, and generate sample particles representing bins of distinct dynamical evolution-regulating characteristics (size, density, direction, albedo). Ephemerides of the sample particles are integrated and recorded for later assignment of frequency based on model parameter changes. To assist in model analysis we are developing interactive software to permit the “turning of knobs” of model parameters, allowing for near-real-time 3D visualization of resulting stream structure. With this tool, we will revisit prior assumptions made, and will observe the impact of introducing non-uniform cometary surface attributes and temporal activity. The software uses a single model definition and implementation throughout model verification, sample particle bin generation and integration, and analysis. It supports the adjustment with feedback of both independent and independent model values, with the intent of providing an interface supporting multivariate analysis. Propagations of measurement uncertainties and model parameter precisions are tracked rigorously throughout. We maintain a separation of the model itself from the abstract concepts of model definition, parameter manipulation, and real-time analysis and visualization. Therefore we are able to quickly adapt to fundamental model changes. It is hoped the tool will also be of use in other solar system dynamics problems. 1 Vaubaillon, J.; Colas, F.; Jorda, L. (2005) A new method to predict meteor showers. I. Description of the model. Astronomy and

  9. Predicting alpine headwater stream intermittency: a case study in the northern Rocky Mountains

    USGS Publications Warehouse

    Sando, Thomas R.; Blasch, Kyle W.

    2015-01-01

    This investigation used climatic, geological, and environmental data coupled with observational stream intermittency data to predict alpine headwater stream intermittency. Prediction was made using a random forest classification model. Results showed that the most important variables in the prediction model were snowpack persistence, represented by average snow extent from March through July, mean annual mean monthly minimum temperature, and surface geology types. For stream catchments with intermittent headwater streams, snowpack, on average, persisted until early June, whereas for stream catchments with perennial headwater streams, snowpack, on average, persisted until early July. Additionally, on average, stream catchments with intermittent headwater streams were about 0.7 °C warmer than stream catchments with perennial headwater streams. Finally, headwater stream catchments primarily underlain by coarse, permeable sediment are significantly more likely to have intermittent headwater streams than those primarily underlain by impermeable bedrock. Comparison of the predicted streamflow classification with observed stream status indicated a four percent classification error for first-order streams and a 21 percent classification error for all stream orders in the study area.

  10. Stream Temperature Variability as an Indicator of Groundwater-Surface Water Interactions in Two Groundwater-Fed Streams

    NASA Astrophysics Data System (ADS)

    Middleton, M.; Allen, D. M.

    2009-12-01

    Water temperature can be a useful tool in assessing the nature and the locations of groundwater - surface water interactions, particularly during low flow periods. In this study, a network of forty calibrated temperature (TidBit) loggers was installed in two groundwater-fed streams (Fishtrap and Bertrand Creeks) in the Lower Fraser Valley of British Columbia and northern Washington State. These streams have precipitation-driven flow regimes and are presumed to be sustained by baseflow during the annual low-flow period which lags minimum precipitation by approximately one month. In these particular streams, understanding groundwater-surface water interactions has been identified data gap in the development of recovery strategies for maintaining ecosystem health and habitat for two endangered fish species, the Nooksack Dace and Salish Sucker. From July 2008 to June 2009, stream temperature and discharge, groundwater temperature and level, and climate were monitored consecutively over two low-flow seasons with the objective of quantifying the spatial and temporal variability within each stream, as well as differences and trends between the streams. The temperature logger networks were installed over 50 m of channel or less at one site on each stream, as well as at two additional sites on Fishtrap Creek for regional coverage. Within each stream, the network of temperature loggers showed the variability in water temperature over a short distance of the channel. In Fishtrap Creek, among 15 dataloggers, the mean variability was 1.3oC, and in Bertrand Creek, among 19 dataloggers, the mean variability was 0.7oC. Fishtrap Creek water temperature ranged from 0.4oC to 17.6oC, showing less variability than Bertrand Creek, which ranged from -0.1oC to 20.8oC. The groundwater temperatures remained relatively stable throughout the year and ranged from 10.1oC to 12.0oC. Fishtrap Creek water temperature patterns were generally stable and mimicked groundwater temperature variations

  11. Monthly energy review, August 1993

    SciTech Connect

    Not Available

    1993-08-26

    This publication presents information for the month of August, 1993 on the following: Energy overview; energy consumption; petroleum; natural gas; oil and gas resource development; coal; electricity; nuclear energy; energy prices, and international energy.

  12. Solar-Geophysical Data Number 497, January 1986. Part 2: (Comprehensive reports). Data for July 1985, and miscellanea

    NASA Technical Reports Server (NTRS)

    Coffey, H. E.

    1986-01-01

    Solar-Geophysical Data Number 497, January 1986. Part 2: (Comprehensive Reports); Data for July 1985, and Miscellanea contains the following: a detailed index for 1985; data for July 1985-(solar flares, solar radio bursts at fixed frequencies, solar x-ray radiation from GOES satellite, mass ejections from the sun, active prominences and filaments); and miscellaneous data-(Meudon carte synoptique 16 April - 13 May 1985, number of solar flares August 1966 - July 1985).

  13. A revised logistic regression equation and an automated procedure for mapping the probability of a stream flowing perennially in Massachusetts

    USGS Publications Warehouse

    Bent, Gardner C.; Steeves, Peter A.

    2006-01-01

    A revised logistic regression equation and an automated procedure were developed for mapping the probability of a stream flowing perennially in Massachusetts. The equation provides city and town conservation commissions and the Massachusetts Department of Environmental Protection a method for assessing whether streams are intermittent or perennial at a specific site in Massachusetts by estimating the probability of a stream flowing perennially at that site. This information could assist the environmental agencies who administer the Commonwealth of Massachusetts Rivers Protection Act of 1996, which establishes a 200-foot-wide protected riverfront area extending from the mean annual high-water line along each side of a perennial stream, with exceptions for some urban areas. The equation was developed by relating the observed intermittent or perennial status of a stream site to selected basin characteristics of naturally flowing streams (defined as having no regulation by dams, surface-water withdrawals, ground-water withdrawals, diversion, wastewater discharge, and so forth) in Massachusetts. This revised equation differs from the equation developed in a previous U.S. Geological Survey study in that it is solely based on visual observations of the intermittent or perennial status of stream sites across Massachusetts and on the evaluation of several additional basin and land-use characteristics as potential explanatory variables in the logistic regression analysis. The revised equation estimated more accurately the intermittent or perennial status of the observed stream sites than the equation from the previous study. Stream sites used in the analysis were identified as intermittent or perennial based on visual observation during low-flow periods from late July through early September 2001. The database of intermittent and perennial streams included a total of 351 naturally flowing (no regulation) sites, of which 85 were observed to be intermittent and 266 perennial

  14. Flame retardant polymeric foams: Manufacturing, applications, and hazards. July 1984-August 1989 (Citations from the Rubber and Plastics Research Association data base). Report for July 1984-August 1989

    SciTech Connect

    Not Available

    1989-09-01

    This bibliography contains citations concerning flame-retardant compositions and additives used in the manufacture of polymeric foams. Latex, polyurethane, polyether, silicone rubber, phenol formaldehyde, polyisocyanurate, polystyrene, PVC and polyphenylene ether are among the foam polymers discussed relative to tests performed to evaluate the toxicity of flame retardants in smoke and during manufacturing. Applications including public transportation, furniture, automotive, medical, and building materials are discussed. (This updated bibliography contains 303 citations, 61 of which are new entries to the previous edition.)

  15. Applications of a New England stream temperature model to ...

    EPA Pesticide Factsheets

    We have applied a statistical stream network (SSN) model to predict stream thermal metrics (summer monthly medians, growing season maximum magnitude and timing, and daily rates of change) across New England nontidal streams and rivers, excluding northern Maine watersheds that extend into Canada (Detenbeck et al., in review). We excluded stream temperature observations within one kilometer downstream of dams from our model development, so our predictions for those reaches represent potential thermal regimes in the absence of dam effects. We used stream thermal thresholds for mean July temperatures delineating transitions between coldwater, transitional coolwater, and warmwater fish communities derived by Beauchene et al. (2014) to classify expected stream and river thermal regimes across New England. Within the model domain and based on 2006 land-use and air temperatures, the model predicts that 21.8% of stream + river kilometers would support coldwater fish communities (mean July water temperatures 22.3 degrees C mean July temperatures). Application of the model allows us to assess potential condition given full riparian zone restoration as well as potential loss of cold or coolwater habitat given loss of riparian shading. Given restoration of all ripa

  16. A multi-year longitudinal study of water quality parameters in four salmon-bearing and recreational streams on mount hood, Oregon.

    PubMed

    Wasowski, Ronald; Alexander, David; Kolmes, Steven; Banet, Nathan; Card, Amy; Haines, Morgan; Kolmes, Elijah; Northcutt, Kelly; Roemer, Derek; Webber, Sarah

    2013-01-01

    Four streams-Clear Fork, Lost Creek, Camp Creek and Still Creek-in northwestern Oregon's Sandy River Basin were monitored for temperature, dissolved oxygen levels, and fecal bacterial concentrations in a multi-year analysis examining stream health for recreational users and anchor habitat for Pacific Salmon. Temperatures were recorded using micro -T temperature loggers at 15 locations, during 22 July - 5 September 2006, 2 July - 4 September 2007, 20 June - 7 September 2008, 23 June - 9 September 2009, and 2 July -9 September 2010. The Seven-Day Average Maximum water temperature (7-DAM) of 13°C was used as a reference value for the biological limit governing suitable salmonid spawning and egg incubation conditions. The maximum 7-DAM temperatures occurred on different dates and all streams neared or exceeded the 13°C standard at least once each summer. Dissolved oxygen levels were measured at weekly or longer intervals in 2006, 2007, 2008, and 2009. Dissolved oxygen levels fell below the 9.0 ppm standard for Clear Fork on almost half the sampling dates in 2006, 2007, and 2009. Concentrations of the bacterial genus Enterococcus were measured as an indicator of fecal contamination. Samples were collected at 15 sites along the four streams. Weekly samples were collected during a 9 week period from July - September 2007, an 11 week period from June - September 2008, and an 11 week period from June - September 2009. Enterococcus counts exceeded the federal recommended national criterion value of 61 colony forming units (CFU) per 100 mL every year in Camp Creek and occasionally elsewhere, with exceedances trending towards late summer.

  17. Particulate hot gas stream cleanup technical issues

    SciTech Connect

    1998-09-01

    This is the eleventh in a series of quarterly reports describing the activities performed under Contract No. DE-AC21-94MC31160. Analyses of Hot Gas Stream Cleanup (HGCU) ashes and descriptions of filter performance address aspects of filter operation that are apparently linked to the characteristics of the collected ash or the performance of the ceramic bed filter elements. Task 1 is designed to generate a data base of the key characteristics of ashes collected from operating advanced particle filters (APFS) and to relate these ash properties to the operation and performance of these filters. Task 2 concerns testing and failure analysis of ceramic filter elements. Under Task 1 during the past quarter, analyses were completed on samples obtained during a site visit to the Power Systems Development Facility (PSDF). Analyses are in progress on ash samples from the Advanced Particulate Filter (APF) at the Pressurized Fluidized-Bed Combustor (PFBC) that was in operation at Tidd and ash samples from the Pressurized Circulating Fluid Bed (PCFB) system located at Karhula, Finland. An additional analysis was performed on a particulate sample from the Transport Reactor Demonstration Unit (TRDU) located at the University of North Dakota Energy and Environmental Research Center. A manuscript and poster were prepared for presentation at the Advanced Coal-Based Power and Environmental Systems `97 Conference scheduled for July 22 - 24, 1997. A summary of recent project work covering the mechanisms responsible for ash deposit consolidation and ash bridging in APF`s collecting PFB ash was prepared and presented at FETC-MGN in early July. The material presented at that meeting is included in the manuscript prepared for the Contractor`s Conference and also in this report. Task 2 work during the past quarter included mechanical testing and microstructural examination of Schumacher FT20 and Pall 326 as- manufactured, after 540 hr in service at Karhula, and after 1166 hr in service at

  18. Meteoroid streams and comet disintegration

    NASA Astrophysics Data System (ADS)

    Guliyev, A.

    2016-01-01

    The results of the statistical analysis of the dynamic parameters of 114 comets that have undergone nuclear splitting are presented in the article. The list of the objects contains: comets that have split in the period of the observation; data of twin-comets; lost comets with designation D; comets with large-scale structure in the coma. We will describe these comets as "splitted". Some aspects of the following hypothesis are studied: disintegration of comet nuclei happens as the result of their collision with meteoroid streams. For the verification of this hypothesis, the position of splitted comet orbits relatively to 125 meteor streams from Kronk's list is analyzed. It was found that the total number of comet orbit nodes located close to the meteor stream planes (for the distances up to 0.1 AU) is N = 1041. It is shown that if these comets are replaced by randomly selected different comets, N will be reduced by a factor of approximately three.

  19. Pumping induced depletion from two streams

    NASA Astrophysics Data System (ADS)

    Sun, Dongmin; Zhan, Hongbin

    2007-04-01

    We have proved that the Hantush's model [Hantush MS. Wells near streams with semipervious beds. J Geophys Res 1965;70:2829-38] in a half-domain can be extended to a whole-domain and becomes identical to that of Hunt [Hunt B. Unsteady stream depletion from ground water pumping. Ground Water 1999;37(1):98-102] for a shallow and infinitely narrow stream, provided that the Dupuit assumption is adopted. This proof helps correct a false concept that regards the Hantush's model as less useful because of its fully penetrating stream assumption. This study deals with interaction of an aquifer with two parallel streams based on the Hantush's model. Semi-analytical solutions are obtained based on rigorous mass conservation requirement by maintaining continuity of flux and head along the aquifer-streambed boundaries. This study shows that the hydraulic conductivity ratio of the two streambeds appears to be the most important factor controlling the stream-aquifer interaction, followed by a less important role played by the thickness ratio of the two streambeds. When the low-permeability streambeds do not exist, the steady-state stream depletion from one stream is linearly proportional to the ratio of the shortest distance from the pumping well to the other stream over the shortest distance between the two streams. When the low-permeability streambeds are presented, similar conclusion can be drawn except that the stream depletion now also strongly depends on the hydraulic conductivity ratio of the two streambeds. When the values of the hydraulic conductivity of the two streambeds are different by an order of magnitude, the location of the pumping well that receives equal flux from two streams can be off the middle-line between the two streams by nearly 90%.

  20. Is there an obstetric July phenomenon?

    PubMed

    Myles, Thomas D

    2003-11-01

    To estimate whether variations in intrapartum management and complications exist with regard to the time of delivery within the academic year. The delivery records of 7814 patients were separated by both term half year and quarter. Statistical comparisons were made using chi2 tests of association (P < .05) with respect to the academic time of the year and perineal trauma (third- or fourth-degree tear), episiotomy usage, cesarean delivery, postpartum hemorrhage, chorioamnionitis, shoulder dystocia, neonatal intensive care unit admission, 1- or 5-minute Apgar scores less than 7, and low umbilical cord pH. There were 4082 deliveries in the first half and 3732 in the second half of the year from April 1996 through March 1999. The first half-year overall cesarean rate was higher (15.8% versus 14.3%, P < .03). Primary cesarean rates were similar. No other differences were found by term half year. More perineal trauma was noted in the fourth quarter (first 3.3%, second 4.5%, third 3.7%, fourth 5.5%, P < .037). Episiotomy usage was higher in both the first and fourth quarters (13.0%, 11.3%, 10.6%, and 14.8%, P < .002). More cases of chorioamnionitis occurred in the fourth quarter (first 3.4%, second 3.1%, third 2.6%, fourth 4.0%, P < .038, third versus fourth quarter). Chorioamnionitis occurred more frequently in July (July 5.0% versus August-June 3.1%, P < .005). There were no other clinically significant differences. Neonatal outcomes were not affected by academic time of year. Although small differences in outcome exist with respect to the academic time of the year, the timing of these differences indicates that there is not a "July phenomenon" in obstetrics at our institution.