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1

Mineral resource appraisal and mineral deposits computer files in the Geological Survey of Canada  

Microsoft Academic Search

The Geological Survey of Canada (G.S.C.) has been involved in national appraisal of resources of certain commodities for nearly two decades beginning with a national study of iron deposits in 1955. In 1972, the first national appraisal to rapidly estimate total resources of Cu, Pb, Zn, Ni, Fe, Mo, and U in Canada was carried out largely by economic geologists.

O. R. Eckstrand

1977-01-01

2

ASTRONAUT'S GUIDE TO TERRESTRIAL IMPACT CRATERS R. A. F. Grieve, Geological Survey of Canada  

E-print Network

#12;#12;ASTRONAUT'S GUIDE TO TERRESTRIAL IMPACT CRATERS R. A. F. Grieve, Geological Survey Gosses Bluff Possible Impact Craters Itturalde, Bolivia Aorounga, Chad Lac Iro, Chad AI Madafi, Saudi but not particularly important phenomenon in the spectrum of geologic process. Our concept of the importance of impact

Rathbun, Julie A.

3

Illinois State Geological Survey  

NSDL National Science Digital Library

The Illinois State Geological Survey (ISGS) homepage provides information on geologic mapping, earthquakes, fossils, groundwater, wetlands, glacial geology, bedrock geology, and Lake Michigan geology. Educational materials include field trip guides, short publications on Illinois geology for students and teachers, online tours, single-page maps, and a geologic column. Other materials include databases and collections of GIS data, well records, drill cores, and mining information; a bibliography of Illinois geology; online maps and data; and information on water and land use, resource development, and geologic hazards.

4

Maryland Geological Survey  

NSDL National Science Digital Library

The Maryland Geological Survey (MGS) homepage contains information from MGS programs on hydrogeology, hydrology, coastal and estuarine geology, environmental geology and mineral resources; an online guide to Maryland geology; and information on oyster habitat restoration projects. There are also maps, data, information on MGS publications, MGS news, and online educational resources.

5

Colorado Geological Survey  

NSDL National Science Digital Library

The Colorado Geological Survey (CGS) is an agency of state government within the Department of Natural Resources whose mission is to help reduce the impact of geologic hazards on the citizens of Colorado, to promote the responsible economic development of mineral and mineral fuel resources, to provide geologic insight into water resources, and to provide geologic advice and information to a variety of constituencies. This site contains extensive information about Colorado geology such as maps, a geologic time scale for the state, program information, and state field trip information. This site hosts the Avalanche Information Center which contains avalanche forecasting and education center details. Publications report on geologic hazards, land use, environmental geology, mineral resources, oil, gas, coal, geologic mapping and earthquake information for the state. There are online editions of RockTalk, which is a quarterly newsletter published by the Colorado Geological Survey dealing with all aspects of geology throughout the state of Colorado. Links are provided for more resources.

6

Geological Survey research 1976  

USGS Publications Warehouse

This U.S. Geological Survey activities report includes a summary of recent (1976 fiscal year) scientific and economic results accompanied by a list of geologic and hydrologic investigations in progress and a report on the status of topographic mapping. The summary of results includes: (1) Mineral resources, Water resources, (2) Engineering geology and hydrology, (3) Regional geology, (4) Principles and processes, (5) Laboratory and field methods, (6) Topographic surveys and mapping, (7) Management of resources on public lands, (8) Land information and analysis, and (9) Investigations in other countries. Also included are lists of cooperating agencies and Geological Survey offices. (Woodard-USGS)

Geological Survey (U.S.)

1976-01-01

7

Geological Survey research 1978  

USGS Publications Warehouse

This U.S. Geological Survey activities report includes a summary of 1978 fiscal year scientific and economic results accompanied by a list of geologic and hydrologic investigations in progress and a report on the status of topographic mapping. The summary of results includes: (1) Mineral and water resources, (2) Engineering geology and hydrology, (3) Regional geology, (4) Principles and processes, (5) Laboratory and field methods, (6) Topographic surveys and mapping, (7) Management of resources on public lands, (8) Land information and analysis, and (9) Investigations in other countries. Also included are lists of cooperating agencies and Geological Survey offices. (Woodard-USGS)

1978-01-01

8

REMOTE SENSING GEOLOGICAL SURVEY  

E-print Network

/Enhanced Thematic Mapper) Imagery Collection Examples of sensors used in CPRM geologic projects Geological Survey for ground water in crystalline terrain 3(VIS)4(NIR)5(SWIR) Moji and Pardo Rivers Basin ­ São Paulo State 3 and Reflection Radiometer) Imagery Collection in CPRM Examples of sensors used in the CPRM geologic projects #12

9

Utah Geological Survey  

NSDL National Science Digital Library

This is the homepage of the Utah Geological Survey. Materials available here include news articles and information on geologic hazards; information on places of geological interest; and popular geology topics such as earthquakes, rocks and minerals, fossils, economic resources, groundwater resources, and others. Educational resources include teaching kits, the 'Teacher's Corner' column in the survey's newsletter, and a series of 'Glad You Asked' articles on state geological topics. There is also an extensive list of free K-12 educational materials, as well as a set of curriculum materials such as activity packets, slide shows, and teachers' handbooks, which are available to order.

10

Arizona Geological Survey  

NSDL National Science Digital Library

This is the homepage of the Arizona Geological Survey. Information accessible here includes maps, information on oil, gas, and minerals in the state, back issues of the survey's newsletter, and a list of resources for public education in the state. These resources include information centers for Arizona geology and Earth Science, the survey's geology library and bibliographic database, a repository of rock cuttings and cores, and a contact for earth science education who will assist teacher groups in introducing local geology to their classes.

11

Geological Survey research 1981  

USGS Publications Warehouse

This U.S. Geological Survey activities report includes a summary of 1981 fiscal year scientific and economic results accompanied by a list of geologic, hydrologic, and cartographic investigations in progress. The summary of results includes: (1) Mineral, (2) Water resources, (3) Engineering geology and hydrology, (4) Regional geology, (5) Principles and processes, (6) Laboratory and field methods, (7) Topographic surveys and mapping, (8) Management of resources on public lands, (9) Land information and analysis, and (10) Investigations in other countries. Also included are lists of investigations in progress. (USGS)

1982-01-01

12

Kansas Geological Survey  

NSDL National Science Digital Library

The mission of the Kansas Geological Survey, operated by the University of Kansas in connection with its research and service program, is to conduct geological studies and research and to collect, correlate, preserve, and disseminate information leading to a better understanding of the geology of Kansas, with special emphasis on natural resources of economic value, water quality and quantity, and geologic hazards. The website includes information about the High Plains and Ogallala aquifers, the Upper Arkansas corridor, the Dakota aquifer, county and state geologic maps, an online bibliography of Kansas geology, publications, a photo archive, a digital petroleum atlas, a petroleum primer for the state, gravity and magnetic maps, Hugoton project information, and details about the Hutchinson Kansas natural gas fires. The educational resources section contains a mineral information page for the state, and GeoKansas, which provides information on state geology for schools.

13

Louisiana Geological Survey  

NSDL National Science Digital Library

This is the homepage of the Louisiana Geological Survey (LGS). The site includes general information about LGS and its various offices, as well as an overview of the Basin Research Energy Section, the oil, gas, and coal research section of LGS. The publications and data page features a catalog and ordering information for documents on mineral resources, fossils, water resources, geological bulletins and maps, and many others, as well as a selection of downloadable maps, including 30 x 60 minute geologic quadrangles, a generalized geologic map of the state with accompanying text, and an online map viewer of the state with selectable layers (geology, water bodies, cultural features, and Landsat imagery). There is also an online listing of well logs, grouped by parish, online listings of core samples, grouped by state, and downloadable public information documents on a variety of geologic topics.

14

North Dakota Geological Survey  

NSDL National Science Digital Library

This is the homepage of the North Dakota Geological Survey. Site materials include information on the state's oil, gas and coal resources, maps, publications, and regulations. The paleontology page features educational articles, information on fossil collecting, articles about fossil exhibits, and information on the state fossil collection. The state GIS hub creates and distributes digital spatial data that conforms to national mapping standards. The teaching tools page includes illustrations and descriptions of rocks and minerals found in the state, as well as information on meteorites and newsletter articles about teaching North Dakota geology. There are also links to landslide maps, surficial geology maps, and links to other survey publications such as reports, bulletins, field studies, other geological and topographic maps, and information on groundwater resources.

15

Indiana Geological Survey  

NSDL National Science Digital Library

This is the homepage of the Indiana Geological Survey (IGS). Site materials include information on Earth science issues such as groundwater, mapping, coal and mineral resources, oil and gas, and seismic hazards. There is also information on the geologic time scale and stratigraphic record, rocks and minerals, fossils (including nautiloids of the Ordovician period in Indiana), caves and karst topography in Indiana, and glacial geology. The Geographic Information Ssytems (GIS) and mapping section includes a GIS atlas for the state, an online map viewer, links to the Indiana coal mine information system, petroleum database management system, and a download page where users can access GIS datasets for the state.

16

California Geological Survey: Geologic Maps  

NSDL National Science Digital Library

This index provides access to a selection of geologic maps of California, as well as an overview of geologic and other mapping activities in the state. The index, which can be accessed by clicking on an interactive map of the state, contains lists of selected geologic maps in California prepared by the Regional Geologic Mapping Project (RGMP). The RGMP staff monitors the literature and collects references that contain geologic mapping that may be useful for future compilations. In addition, the site has information about Caltrans Highway Corridor Mapping, The Mineral Resources and Mineral Hazards Mapping Program, North Coast Watersheds Assessment Program, The Timber Harvesting Plan Enforcement Program, and The Seismic Hazards Mapping Program. A set of links is provided to other sources of geologic maps and map information.

17

Geological Survey research, 1975  

USGS Publications Warehouse

'Geological Survey Research 1975 ' is the 16th annual synopsis of the results of U.S. Geological Survey investigations. These studies are largely directed toward the development of knowledge that will assist the Nation to use and conserve the land and its physical resources wisely. They are wide ranging in scope and deal with almost every facet of solid-earth science and fact finding. Many of the studies are continuations of investigations that have been in progress for several years. But others reflect the increased attention being given to problems that have assumed greater importance in recent years--problems relating to mineral fuels and mineral resources, water quality, environmental impact of mineral resources, land-use analysis, earthquake hazards reduction, subsidence, and the applications of LANDSAT data, to cite a few examples. (Woodard-USGS)

1975-01-01

18

Development of a 3-D geological model towards natural hazards mitigation, St. Lawrence River Valley, Eastern Canada  

Microsoft Academic Search

As part of the Canadian Government's main goals to ensure safe and strong communities for its citizens, the Geological Survey of Canada has recently undertaken the development of a 3-D geological model and a seamless surficial geology map of the St. Lawrence River valley in Eastern Canada. This paper summarizes the initial phase of this project, which consists of gathering,

RJEAN COUTURE; DOMINIQUE GAUVREAU; J. ROBERT BLANGER

19

Wyoming State Geological Survey  

NSDL National Science Digital Library

This agency's mission is to study, examine, and seek an understanding of the geology, mineral resources, and physical features of the State; to prepare, publish, and distribute reports and maps of Wyoming's geology, mineral resources, and physical features; and to provide information, advice, and services related to the geology, mineral resources, and physical features of the State. This site contains details and reports about metals in Wyoming, earthquakes and other hazards, coal, industrial minerals, uranium, oil and gas. The field trip section contains details about various areas to visit with students and gives a general geologic description. There is also a searchable bibliography with publications about Wyoming geology. Links are provided for additional resources.

20

Geological Survey Research 1966, Chapter B  

USGS Publications Warehouse

This collection of 43 short papers is the first published chapter of 'Geological Survey Research 1966.' The papers report on scientific and economic results of current work by members of the Conservation, Geologic, Topographic, and Water Resources Divisions of the U.S. Geological Survey. Chapter A, to be published later in the year, will present a summary of significant results of work done during fiscal year 1966, together with lists of investigations in progress, reports published, cooperating agencies, and Geological Survey offices. 'Geological Survey Research 1966' is the seventh volume of the annual series Geological Survey Research. The six volumes already published are listed below, with their series designations. Geological Survey Research 1960-Prof. Paper 400 Geological Survey Research 1961-Prof. Paper 424 Geological Survey Research 1962-Prof. Paper 450 Geological Survey Research 1963-Prof. Paper 475 Geological Survey Research 1964-Prof. Paper 501 Geological Survey Research 1965-Prof. Paper 525

1966-01-01

21

An Interactive Map Viewer for the Urban Geology of Ottawa (Canada): an Example of Web Publishing  

Microsoft Academic Search

Developed by the Terrain Sciences Division (TSD) of the Geological Survey of Canada (GSC), an interactive map viewer, called GEOSERV (www.geoserv.org), is now available on the Internet. The purpose of this viewer is to provide engineers, planners, decision makers, and the general public with the geoscience information required for sound regional planning in densely populated areas, such as Canada's national

D. Giroux; R. Blanger

2003-01-01

22

U.S. Geological Survey  

NASA Technical Reports Server (NTRS)

The Hydrologic Instrumentation Facility (HIF) at Stennis Space Center is a unique high-tech facility that provides hydrologic instrumentation support to the U. S. Geological Survey and other federal agencies worldwide. The HIF has the responsibility for warehousing, testing, evaluating, designing, repairing, and calibrating numerous pieces of hydrologic instrumentation, which is used in studying water on the surface, in the soil, and in the atmosphere of the Earth.

1996-01-01

23

U.S. Department of the Interior May 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior May 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Gold Commodity Specialist U.S. Geological Survey 989 National Center,000 116,000 319 13,400 2013, January: Bolivia -- 1,480 -- 1,480 1,980 -- -- Canada -- (5) 8,810 8,810 455

24

U.S. Department of the Interior January 2014 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior January 2014 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Gold Commodity Specialist U.S. Geological Survey 989 National Center 2 October: Bolivia -- 928 17 945 246 -- -- Canada 49 3,530 5,100 8,680 479 1 -- Chile -- 713 -- 713

25

U.S. Department of the Interior October 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior October 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Gold Commodity Specialist U.S. Geological Survey 989 National Center,280 July: Bolivia -- 412 370 782 212 -- -- Canada 4 (5) 6,050 6,050 306 -- -- Chile -- 170 -- 170 84

26

U.S. Department of the Interior July 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior July 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Gold Commodity Specialist U.S. Geological Survey 989 National Center 16,100 5,020 21,100 225,000 3,520 222 March: Bolivia -- 375 183 558 665 -- -- Canada 5 12 2,620 2

27

U.S. Department of the Interior February 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior February 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Gold Commodity Specialist U.S. Geological Survey 989 National Center,600 -- -- -- Bolivia -- 1,020 68 1,090 1,880 -- -- Canada -- 24 5,780 5,800 540 -- -- Chile -- 459 427 886 5

28

U.S. Department of the Interior December 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior December 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Gold Commodity Specialist U.S. Geological Survey 989 National Center: Argentina -- 106 146 252 -- -- -- Bolivia -- 527 156 683 82 -- -- Brazil -- -- 142 142 -- -- -- Canada 97

29

U.S. Department of the Interior July 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior July 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Gold Commodity Specialist U.S. Geological Survey 989 National Center: Bolivia -- 926 132 1,060 324 -- -- Canada 44 (5) 4,080 4,120 455 (5) -- Chile -- 201 -- 201 3

30

OECD Economic Surveys: Canada 2012  

ERIC Educational Resources Information Center

Canada weathered the global economic crisis well, mainly reflecting sustained growth in domestic pending, and the economy is continuing to grow despite the persistence of international turbulence, most recently stemming from the euro zone sovereign debt crisis. In Canada's case, several factors are acting in its favour. Federal fiscal plans are

OECD Publishing (NJ3), 2012

2012-01-01

31

References on Ball Clay U.S. Geological Survey  

E-print Network

: Robert L. Virta James R. Herring U.S. Geological Survey U.S. Geological Survey 983 National Center BoxReferences on Ball Clay U.S. Geological Survey: Clay and Shale. U.S. Geological Survey (U.S. Bureau Quadrangle, Graves County, Kentucky: U.S. Geological Survey Geologic Quadrangle GQ-0457, Scale 1

32

References on Kaolin U.S. Geological Survey  

E-print Network

: Robert L. Virta James R. Herring U.S. Geological Survey U.S. Geological Survey 983 National Center BoxReferences on Kaolin U.S. Geological Survey: Clay and Shale. U.S. Geological Survey (U.S. Bureau: U.S. Geological Survey Open File Report 79-526, 41 p. Cofer, H. E., Jr., Wright, N. A., Carey, M. A

33

Efficient Geological Modelling of Large AEM Surveys  

NASA Astrophysics Data System (ADS)

Combining geological expert knowledge with geophysical observations into a final 3D geological model is, in most cases, not a straight forward process. It typically involves many types of data and requires both an understanding of the data and the geological target. When dealing with very large areas, such as modelling of large AEM surveys, the manual task for the geologist to correctly evaluate and properly utilise all the data available in the survey area, becomes overwhelming. In the ERGO project (Efficient High-Resolution Geological Modelling) we address these issues and propose a new modelling methodology enabling fast and consistent modelling of very large areas. The vision of the project is to build a user friendly expert system that enables the combination of very large amounts of geological and geophysical data with geological expert knowledge. This is done in an "auto-pilot" type functionality, named Smart Interpretation, designed to aid the geologist in the interpretation process. The core of the expert system is a statistical model that describes the relation between data and geological interpretation made by a geological expert. This facilitates fast and consistent modelling of very large areas. It will enable the construction of models with high resolution as the system will "learn" the geology of an area directly from interpretations made by a geological expert, and instantly apply it to all hard data in the survey area, ensuring the utilisation of all the data available in the geological model. Another feature is that the statistical model the system creates for one area can be used in another area with similar data and geology. This feature can be useful as an aid to an untrained geologist to build a geological model, guided by the experienced geologist way of interpretation, as quantified by the expert system in the core statistical model. In this project presentation we provide some examples of the problems we are aiming to address in the project, and show some preliminary results.

Bach, Torben; Martlev Pallesen, Tom; Jrgensen, Flemming; Lundh Gulbrandsen, Mats; Mejer Hansen, Thomas

2014-05-01

34

Mineral Resources, Geological Structure and Landform Surveys  

NASA Technical Reports Server (NTRS)

Significant results are presented of ERTS-1 investigations of landform surveys, mineral resources, and geological structures. The report covers four areas: (1) mapping investigations; (2) dynamic surface processes and landforms; (3) structural elements; and (4) mineral deposits.

Short, M. N.

1973-01-01

35

Geological Survey Research 1966, Chapter A  

USGS Publications Warehouse

'Geological Survey Research 1966' is the seventh annual review of the econamic and scientific work of the U.S. Geological Survey. As in previous years the purpose of the volume is to make available promptly to the public the highlights of Survey investigations. This year the volume consists of 4 chapters (A through D) of Professional Paper 550. Chapter A contains a summary of significant results, and the remaining chapters are made up of collections of short technical papers. Many of the results summarized in chapter A are discussed in greater detail in the short papers or in reports listed in 'Publications in Fiscal Year 1966,' beginning on page A265. The tables of contents for chapters B through D are listed on pages A259-A264. Numerous Federal, State, county, and municipal agencies listed on pages A211-A215 cooperated financially with the Geological Survey during fiscal 1966 and have contributed significantly to the results reported here. They are identified where appropriate in the short technical papers that have appeared in Geological Survey Research and in papers published cooperatively, but generally are not identified in the brief statements in chapter A. Many individuals on the staff of the Geological Survey have contributed to 'Geological Survey Research 1966.' Reference is made to only a few. Frank W. Trainer, Water Resources Division, was responsible for organizing and assembling chapter A and for critical review of papers in chapters B-D, assisted by Louis Pavlides, Geologic Division. Marston S. Chase, Publications Division, was in charge of production aspects of the series, assisted by Jesse R. Upperco in technical editing, and William H. Elliott and James R. Hamilton in planning and preparing illustrations. The volume for next year, 'Geological Survey Research 1967,' will be published as chapters af Professional Paper 5715. Previous volumes are listed below, with their series designations. Gealagical Survey Research 1960-Prof. Paper 400 Gealagical Survey Research 1961-Prof. Paper 424 Gealagical Survey Research 1962-Prof. Paper 450 Gealagical Survey Research 1963-Prof. Paper 475 Gealagical Survey Research 1964-Prof. Paper 501 Gealagical Survey Research 1965-Prof. Paper 525

1966-01-01

36

Results of magnetic HGI and radiometric surveys in W. Canada  

SciTech Connect

This article presents four case histories in which ground-based magnetic horizontal gradient intensity (HGI) and radiometric surveys were used in Western Canada for cost-effective geochemical exploration for hydrocarbons. The authors has developed these two surface exploration techniques from published studies and adapted them for use on the prairies the past 7 years. These surveys are used in conjunction with the usual geologic and seismic studies for: (1) evaluating prospects and land; (2) verifying seismic anomalies and inexpensively locating areas for conducting expensive 3D seismic surveys. Occasionally, as in two of the case histories discussed, these surveys were used successfully as stand-alone exploration methods where seismic exploration is not effective. The HGI and radiometric surveys measure, by geophysical methods, those effects associated with geochemical alterations due to vertical microseepage of hydrocarbons. The total cost, including permitting, data acquisition, data processing, and interpretation of the combination HGI and radiometric surveys is about 15% the total cost of a 3D seismic survey. Because of this, the author finds them an attractive and rapid survey adjunct to traditional exploration. They substantially reduce finding costs and significantly raise the probability of financial success.

LeSchack, L.A. [Topaz Energy Exploration Ltd., Calgary, Alberta (Canada)

1997-05-19

37

GEOLOGICAL SURVEY OF CANADA OPEN FILE 7462  

E-print Network

Green Zone with chlorite and illite, middle Red Zone dominated by hematite and kaolinite, and a discontinuous Bleached Zone of kaolin-group minerals and illite right at the unconformity. Preliminary data

38

GEOLOGICAL SURVEY OF CANADA OPEN FILE 7037  

E-print Network

Sediment Quality Guidelines and Probable Effects Levels for the Protection of Aquatic Life. Concentrations Effects Levels in lakes located west of the City of Yellowknife. These lakes occur on granitoid bedrock the City of Yellowknife, Northwest Territories J.M. Galloway, H. Sanei, R.T. Patterson, T. Mosstajiri, T

Patterson, Timothy

39

Alaska Division of Geological & Geophysical Surveys  

NSDL National Science Digital Library

The mission of the Alaska Division of Geological & Geophysical Surveys is "to determine the potential of Alaskan land for production of metals, minerals, fuels, and geothermal resources." The homepage features a "Headlines" area that includes mining reports, links to press releases, and a fascinating interactive map of quaternary faults and folds that will be of great interest to geologists. Moving on, the Sections area contains links to specific department projects, including work on engineering geology, energy resources, and volcanology. Visitors won't want to miss the Geologic Materials Center area. Here they can learn about the Division's work cataloging, storing, and studying key metrics that tell the story of Alaska's geological resources. Finally, the Publications area contains links to all of the organization's written works, including those from the Mineral Industry Research Laboratory at the University of Alaska at Fairbanks and a number of crucial reports from the U.S. Bureau of Mines. [KMG

40

Kentucky Geological Survey: Earth Science Education Network  

NSDL National Science Digital Library

This website contains educational resources for K-12 classrooms provided by the Kentucky Geological Survey (KGS). The purpose of this site is to provide educational Earth Science resources from around the globe using the internet. Earth science links, classroom activities, demonstrations, and a listserv for teachers are provided.

41

U.S. Geological Survey: Coastal and Marine Geology Program  

NSDL National Science Digital Library

Geologists, meteorologists, disaster specialists and others will find much to engage their attention on this website. Created by the United States Geological Survey, this site provides succinct overviews of a range of topics from the National Coastal Program Plan to El Nino, erosion, and sea-level change. Teachers should click on the drop down Content Type menu to access the Educational Materials area. Here they will find over 100 resources that highlight ocean mapping projects, core geology work, and ocean acidification. Visitors may also browse through these resources looking for movies, maps, data sets, photographs, and more. Additionally, visitors can learn about the program's field centers, located in St. Petersburg, Woods Hole, and Menlo Park.

2012-02-28

42

Wisconsin Geological and Natural History Survey  

NSDL National Science Digital Library

The Wisconsin Geological and Natural History Survey, as part of the University of Wisconsin-Extension, is "an interdisciplinary organization that conducts natural resources surveys and research to produce information used for decision making, problem solving, planning, management, development, and education". The site offers downloadable online publications such as annual groundwater level summaries and understanding Wisconsin township, range, and section land descriptions. It also contains lists of other publications and various maps of Wisconsin, all of which can be ordered by mail. Information on the history of the survey and an interesting section that includes pictures and descriptions of karst (limestone) development and features is also available.

2001-01-01

43

Abstract, Joint Annual Meeting of the Geological Association of Canada and Mineralogical Association of Canada, St John's, Newfoundland, May 2012  

E-print Network

Abstract, Joint Annual Meeting of the Geological Association of Canada and Mineralogical SANDSTONES OVERLYING THE CONCEALED PHOENIX URANIUM DEPOSIT, ATHABASCA BASIN, CANADA M. Power1 , K. Hattori1's Phoenix uranium deposit, is situated near the southeastern rim of the Athabasca Basin in northern

44

Geologic Assessment of Undiscovered Oil and Gas Resources of the West Greenland-East Canada Province  

USGS Publications Warehouse

The U.S. Geological Survey (USGS) recently assessed the potential for undiscovered oil and gas resources of the West Greenland-East Canada Province as part of the USGS Circum-Arctic Resource Appraisal program. The province lies in the offshore area between western Greenland and eastern Canada and includes Baffin Bay, Davis Strait, Lancaster Sound, and Nares Strait west of and including part of Kane Basin. A series of major tectonic events led to the formation of several distinct structural domains that are the geologic basis for defining five assessment units (AU) in the province, all of which are within the Mesozoic-Cenozoic Composite Total Petroleum System (TPS). Potential petroleum source rocks within the TPS include strata of Ordovician, Early and Late Cretaceous, and Paleogene ages. The five AUs defined for this study-the Eurekan Structures AU, Northwest Greenland Rifted Margin AU, Northeast Canada Rifted Margin AU, Baffin Bay Basin AU, and the Greater Ungava Fault Zone AU-encompass the entire province and were assessed for undiscovered, technically recoverable resources.

Schenk, Christopher J.

2010-01-01

45

A survey of telehealth coordinators in Canada.  

PubMed

Telehealth coordinators practising in Canada were invited to respond to an online survey and participate in a telephone interview. For the present study, the definition of 'telehealth' was limited to the use of videoconferencing. The coordinators were recruited with the assistance of the Ontario Telemedicine Network (OTN) and the Canadian Telehealth Forum (CTF). The response rate to the online survey from the OTN cohort was 4% (n = 13) and from the CTF cohort was 36% (n = 34). Of the 47 people who completed the survey, 16 also participated in a telephone interview. Most respondents were female; their mean age was 40 years. Most telehealth coordinators had some form of post-secondary education. Most, 66% (n = 31) coordinated both clinical and educational videoconferences. About half of the telehealth coordinators (55%, n = 26) indicated that their job was dedicated solely to telehealth, although 32% (n = 15) reported that their jobs involved responsibilities outside telehealth. About half of the respondents worked full-time (51%, n = 24). Most respondents either strongly agreed or agreed with the statement that 'If a telehealth coordinator's role involves patient care then that individual should be a member of a regulated health profession'. The need for organizations to more clearly define the role, better recognize and support telehealth coordinators and develop mechanisms for continuing professional education and certification were recurrent themes in the interviews. PMID:22604279

Lynch, Jay; Gay, Shirley

2012-06-01

46

ANALYSIS OF AERIAL CIRCLING SURVEYS FOR CANADA GOOSE BREEDING POPULATIONS  

E-print Network

ANALYSIS OF AERIAL CIRCLING SURVEYS FOR CANADA GOOSE BREEDING POPULATIONS THOMAS C. T ACIIA, RAYMO 1978 Made in United States of ArncricCl #12;ANALYSIS OF AERIAL CIRCLING SURVEYS FOR CANADA GOOSE and their associated flights. (2) w{'ck-to-w{'ek vari- ations in visihility liu-tors such as water le\\"(,ls and \\'{'gt

47

US Geological Survey Planetary GIS Web Server  

NSDL National Science Digital Library

The US Geological Survey, who maintains the Planetary GIS Web Server Analyzable Database, has a mission "to produce a Web-based, user-friendly interface aimed at the planetary research community that will support and integrate powerful Geographic Information Systems (GIS) graphical, statistical, and spatial relational tools for analyses of planetary datasets." Visitors will find online maps, data from the Mars Exploration Rover Project, global GIS data, and GIS tutorials. The datasets include vector and raster GIS data that covers everything from geologic age, faults, streams, springs, and oil and gas fields, to elevation and climate data. Researchers involved in GIS and astrology related pursuits will appreciate the unique offerings of this governmental site.

2000-01-01

48

New York State Geological Survey crystalline rock project. Progress report  

SciTech Connect

Presented is a preliminary geologic map of the West-Central Adirondack Region, based on mapping by members of the New York State Geological Survey and participants from several universities during the 1984 field season. The area mapped comprises portions of the West Canada Lakes, Old Forge, McKeever, Number Four, Big Moose and Raquette Lake 15 minute quadrangles. The geology of the area is dominated by two major groups of hornblende-granulite facies rocks: (a) a supracrustal sequence locally showing internal stratigraphy, including quartzofeldspathic leucogneiss, kinzigite, marble, calcsilicate granulite and amphibolite, and (b) granitic and charnockitic gneisses of both plutonic and supracrustal origin, which are widespread and often occur as elliptical domes and lenses, as well as being interstratified with the metasedimentary sequence. Clear intrusive relationships are few. In addition to these rocks, minor intrusions of meta-anorthosite and metagabbro are locally present. At least three phases of folding are present. The first is expressed by regional foliation development. The second generation is tight to isoclinal and overturned with axial trends ranging from east to northeast. The third generation is open folds with north to northwest axial trends. Good correlation exists between photogeology, aeromagnetics, and field observations.

Not Available

1985-03-01

49

The United States Geological Survey in Alaska; accomplishments during 1982  

USGS Publications Warehouse

This circular contains short topical and summary articles about the results of 1982 geologic studies on a wide range of subjects of economic and scientific interest. Included are lists of references cited for each article and a compilation of reports about Alaska written by members of the U.S. Geological Survey and published by the Geological Survey and other organizations.

Reed, Katherine M., (Edited By); Bartsch-Winkler, Susan

1984-01-01

50

Mineral resources, geologic structure, and landform surveys  

NASA Technical Reports Server (NTRS)

The use of ERTS-1 imagery for mineral resources, geologic structure, and landform surveys is discussed. Four categories of ERTS imagery application are defined and explained. The types of information obtained by the various multispectral band scanners are analyzed. Samples of land use maps and tectoning and metallogenic models are developed. It is stated that the most striking features visible on ERTS imagery are regional lineaments, or linear patterns in the topography, which reflect major fracture zones extending upward from the basement of the earth.

Lattman, L. H.

1973-01-01

51

The United States Geological Survey in Alaska; accomplishments during 1983  

USGS Publications Warehouse

This circular contains short reports about many of the geologic studies carried out in Alaska by the U.S. Geological Survey and cooperating agencies during 1983. The topics cover a wide range in scientific and economic interest.

Bartsch-Winkler, S., (Edited By); Reed, K.M.

1985-01-01

52

The United States Geological Survey in Alaska; accomplishments during 1984  

USGS Publications Warehouse

This circular contains short reports about many of the geologic studies carried out in Alaska by the U.S. Geological Survey and cooperating agencies during 1984. The topics cover a wide range in scientific and economic interest.

Bartsch-Winkler, S., (Edited By)

1985-01-01

53

Front cover: Photographs by Cathy Munday, U.S. Geological Survey. 1. Mud Slough at Highway 140.  

E-print Network

.............................................................................................................. 10 U.S. Geological Survey Methods..................................................................................................................................... 18 U.S. Geological Survey Methods

54

State geological surveys: Their growing national role in policy  

USGS Publications Warehouse

State geological surveys vary in organizational structure, but are political powers in the field of geology by virtue of their intimate knowledge of and involvement in legislative and political processes. Origins of state geological surveys lie in the recognition of society that settlement and prosperity depended on access to a variety of natural resources, resources that are most familiar to geologists. As the surveys adapt to modern societal pressures, making geology serve the public has become the new mission for many state geological surveys. Geologic mapping was the foundation of most early surveys, and the state surveys have brought mapping back into the public realm to meet today's challenges of growing population density, living environment desires, and resource access.

Gerhard, L.C.

2000-01-01

55

Geological Setting and Petroleum Potential of the Paleozoic Hudson Platform, Northern Canada  

NASA Astrophysics Data System (ADS)

The Hudson Platform covers an area of 600,000 km2 and represents one of the largest Paleozoic sedimentary basins in Canada. The Hudson Platform contains the large Hudson Bay Basin and smaller Moose River Basin. The Hudson Bay and Moose River basins are surrounded and underlain by Precambrian igneous and metamorphic rocks of the Canadian Shield. The Hudson Platform contains Ordovician to Cretaceous sedimentary strata, with a maximum known thickness of about 2500 m in Hudson Bay. The lower Paleozoic succession includes Late Ordovician to Early Devonian shallow marine carbonates and thin mudstones, deposited during widespread early Paleozoic marine inundation of the Canadian Shield, and Early to Late Devonian marine carbonates, evaporates, and mudstones deposited in saucer-shaped, isolated basin depocentres. There is no record of late Paleozoic sedimentation in the region, perhaps related to cratonic uplift accompanying the Alleghenian Orogeny. Lower Paleozoic strata are unconformably overlain by thin, erosional remnants of Middle Jurassic and Early Cretaceous nonmarine sandstones, mudstones and lignite seams (Moose River Basin) and Early Cretaceous marine sandstones and mudstones (Hudson Bay Basin). The Hudson Platform is currently considered a frontier prospect for hydrocarbon exploration. However, the long- held view that the region is underlain by a thin sedimentary succession with no appreciable hydrocarbon source rocks or reservoir intervals is erroneous. Geological and geophysical data indicate the Hudson Bay Basin contains many prospective petroleum reservoir and trap types, potentially including hydrothermal dolomite. Recent studies indicate Upper Ordovician oil shales are widespread and may have generated hydrocarbons in deeper parts of the Hudson Bay Basin. New high resolution bathymetric surveys in northern Hudson Bay have led to the recognition of circular sea-floor depressions similar to fluid or gas-escape pockmarks. A modern re-evaluation of the petroleum systems and energy resource potential of the Hudson Platform is the focus of a new Geological Survey of Canada research initiative.

Dietrich, J.; Hamblin, T.; Lavoie, D.; Duchesne, M.; Lajeunesse, P.; Zhang, Z.

2009-05-01

56

U. S. Geological Survey Volcano Hazards Program  

NSDL National Science Digital Library

A comprehensive overview of the U.S. Geological Survey's Volcano Hazards Program and current volcanic activity in the United States. The Volcano Hazards Program monitors volcanoes and collects the best possible scientific information on volcanoes in the United States and elsewhere to reduce the risk from volcanic activity. Site includes links to the Program's four volcano observatories in Alaska, the Cascades (Washington State) , Hawaii, and Long Valley (California). Other links include information on volcano hazards: types, effects, locations and historical eruptions, information on reducing volcanic risks, volcano monitoring, emergency planning, and warning schemes. Other resources available are a photoglossary, volcano fact sheets and videos, an educator's page, and updates and weekly reports on worldwide, U.S., and Russian volcano activity.

57

INVESTIGATION OF SCALE EFFECTS IN HARD ROCKS Richard Simon, Dept of civil, geological & mining engng cole Polytechnique, Montral, Qubec, Canada  

E-print Network

INVESTIGATION OF SCALE EFFECTS IN HARD ROCKS Richard Simon, Dept of civil, geological & mining engng ­ ?cole Polytechnique, Montréal, Québec, Canada Desheng Deng, Dept of civil, geological & mining & mining engng ­ ?cole Polytechnique, Montréal, Québec, Canada Li Li, Dept of civil, geological & mining

Aubertin, Michel

58

USGS Coastal and Marine Geology Survey Data in Google Earth  

Microsoft Academic Search

The U.S. Geological Survey (USGS) Coastal and Marine Geology (CMG) program has a rich data catalog of geologic field activities and metadata called InfoBank, which has been a standard tool for researchers within and outside of the agency. Along with traditional web maps, the data are now accessible in Google Earth, which greatly expands the possible user audience. The Google

C. Reiss; C. Steele; A. Ma; J. Chin

2006-01-01

59

Geologic studies in Alaska by the U.S. Geological Survey during 1985  

USGS Publications Warehouse

This circular contains short reports about many of the geologic studies carried out in Alaska by the U.S. Geological Survey and cooperating agencies in 1985. The topics cover a wide range in scientific and economic interest. Separate bibliographic listings of published reports are included. These listings are: (1) data releases and folio components derived from the Alaska Mineral Resource Assessment Program, (2) reports on Alaska released in U.S. Geological Survey publications in 1985, and (3) reports about Alaska by U.S. Geological Survey authors in various scientific journals in 1985.

Bartsch-Winkler, S., (Edited By); Reed, K.M.

1986-01-01

60

Wild Bird Influenza Survey, Canada, 2005  

PubMed Central

Of 4,268 wild ducks sampled in Canada in 2005, real-time reverse transcriptasePCR detected influenza A matrix protein (M1) gene sequence in 37% and H5 gene sequence in 5%. Mallards accounted for 61% of samples, 73% of M1-positive ducks, and 90% of H5-positive ducks. Ducks hatched in 2005 accounted for 80% of the sample. PMID:18258085

Bastien, Nathalie; Booth, Timothy F.; Bowes, Victoria; Buck, Peter A.; Breault, Andre; Caswell, Dale; Daoust, Pierre-Yves; Davies, J. Chris; Elahi, Seyyed Mehdy; Fortin, Madeleine; Kibenge, Fred; King, Robin; Li, Yan; North, Norman; Ojkic, Davor; Pasick, John; Pryor, Sydney Paul; Robinson, John; Rodrigue, Jean; Whitney, Hugh; Zimmer, Patrick; Leighton, Frederick A.

2008-01-01

61

Onshore Quaternary geological surveys in the 21st centurya perspective from the British Geological Survey  

Microsoft Academic Search

At the turn of the century the British Geological Survey has embarked on a major programme to construct a 3-dimensional geological model of the UK. The reassessment of methodologies used to investigate Quaternary deposits and processes forms an important part of this programme. Surveys of user requirements indicate that the collation of new data and the generation of new output

Andrew A McMillan

2002-01-01

62

Using deep-probing EM studies as an aid to area selection of diamond provinces Alan G. Jones*, Continental Geoscience Division, Geological Survey of Canada, 615 Booth St., Ottawa, On-  

E-print Network

Kaapvaal and Siberian cratons. North America's first commercial diamond mine, BHP Billiton Diamonds' EkatiUsing deep-probing EM studies as an aid to area selection of diamond provinces Alan G. Jones, Canada (ajones@nrcan.gc.ca) Summary Over the last decade significant exploration for diamonds has

Jones, Alan G.

63

CANADA-SOUTHERN AFRICA MIGRATION SURVEY INFORMATION What is SAMP?  

E-print Network

1 CANADA-SOUTHERN AFRICA MIGRATION SURVEY INFORMATION What is SAMP? SAMP is the Southern African in that country. Which countries form part of `Southern Africa'? Angola, Botswana, Democratic Republic of Congo, Swaziland, United Republic of Tanzania, Zambia, Zimbabwe Is any research being done in Southern Africa? Yes

Abolmaesumi, Purang

64

IYPE in Canada  

Microsoft Academic Search

The Canadian National Committee picked five of the ten IYPE themes for emphasis in Canada - Water, Hazards, Energy, Resources and Environment. They are summarized in the acronym WHERE - WHERE on Earth, WHERE in Canada. Our committee raised funds from industry, with some generous support from The Geological Survey of Canada. Funds were used for publishing ``Four Billion Years

J. Boyd; G. Nowlan

2009-01-01

65

Recent US Geological Survey Publications On Water Resources in Alaska  

NSDL National Science Digital Library

The United States Geological Survey has made available publications on Water Resources in Alaska. Although the actual reports need to be ordered, abstracts of papers on Alaska hydrology and glaciology are available at the Website.

66

Review of the United States Geological Survey Volcano Hazards Program  

E-print Network

Review of the United States Geological Survey Volcano Hazards Program Authors and Review Panel.................................................................................................................. 6 1.1 The Volcano Hazards Program Mission and Significance......................................................................................................... 12 3.1 Volcano Hazard Assessments

Torgersen, Christian

67

Social determinants of health in Canadas immigrant population: results from the National Population Health Survey  

Microsoft Academic Search

As part of the Metropolis project a large-scale investigation of immigration and integration, including well-being of immigrants in a number of areas of social life in this paper we investigate the social determinants of health in Canadas immigrant population using Canadas National Population Health Survey (NPHS). Specifically, we examine differences in health status and health care utilization between

James R. Dunn; Isabel Dyck

2000-01-01

68

Geological Storage of CO2 from Power Niels Peter Christensen, Geological Survey of Denmark and  

E-print Network

. There is also mounting evidence that as atmospheric CO2 levels rise, our oceans will acidify in responseGeological Storage of CO2 from Power Generation Niels Peter Christensen, Geological Survey significant CO2 emission reduction in the near to medium term. When fully deployed, CCS in Europe alone

69

The United States Geological Survey in Alaska; organization and status of programs in 1976  

USGS Publications Warehouse

This report of the activities of the U.S. Geological Survey in Alaska is organized in four parts (1) services and responsibilities of the U.S. Geological Survey; (2) organization of the U.S. Geological Survey; 13) current U.S. Geological Survey activities; and (4) cooperative projects with Federal, State, and local agencies.

Edited by Cobb, Edward Huntington

1976-01-01

70

Stability Zone of Natural Gas Hydrates in a Permafrost-Bearing Region of the Beaufort-Mackenzie Basin: Study of a Feasible Energy Source (Geological Survey of Canada Contribution No.1999275)  

SciTech Connect

Analysis of geological and geophysical data from 150 wells in the Beaufort-Mackenzie region(study area between 68 deg. 30'-70 deg. 00'N and 131 deg. -39 deg. W) led to reinterpretation of the depth of methane hydrate stability and construction of the first contour maps displaying thickness of hydrate stability zones as well as hydrate stability zone thicknesses below permafrost. Calculations were based on construction of temperature-depth profiles incorporating regional heat-flow values, temperature at the base of ice-bearing permafrost, and models relating thermal conductivity with depth. Data analysis indicates the presence and extent of the methane hydrate stability zone is related mainly to the history of permafrost development and less so by the relatively small regional variations of temperature gradients. Analysis of well logs and other indicators in conjunction with knowledge of the hydrate stability zone allows reevaluation of the location of possible gas hydrate occurrences. Log analysis indicates that in the onshore and shallow sea area of the Beaufort-Mackenzie Basin, methane hydrate occurs in 27 wells. Fifteen of these locations coincides with underlying conventional hydrocarbon occurrences. Previous analyses place some of the hydrate occurrences at greater depths than proposed for the methane hydrate stability zone described in this study. Interpretation of geological cross sections reveals that hydrates are related mainly to sandy deltaic and delta-plain deposits in Iperk, Kugmallit, and Reindeer sequences although additional hydrate picks have been inferred in other sequences, such as Richards. Overlying permafrost may act as seal for hydrate accumulations; however, the thickness of permafrost and its related hydrate stability zone fluctuated during geological time. It is interpreted that only in the last tens of thousand of years (i.e., Sangamonian to Holocene), conditions for hydrates changed from nonstable to stable. During Early and Late Wisconsinan and Holocene time, conditions were favorable for generation and trapping of hydrates. However, previously during Sangamonian time,less favorable conditions existed for hydrate stability. Gas release from hydrates may have occurred during times when hydrate stability was non existent because of permafrost melting episodes. It is interpreted that entrapment of gas in hydrate molecular structures is related to the existence of conventional structural traps as well as less permeable sediments such as the Mackenzie Bay Formation, which act as seal.

Majorowicz, J. A., E-mail: majorowi@freenet.edmonton.ab.ca; Hannigan, P. K., E-mail: phanniga@nrcan.gc.ca

2000-03-15

71

Curiosity rover surveys Martian atmosphere and geology  

NASA Astrophysics Data System (ADS)

Three months after its dramatic landing on the surface of Mars, NASA's Mars Science Laboratory (MSL), known as Curiosity, is beginning to produce a variety of initial results, scientists reported at the Geological Society of America meeting in Charlotte, N. C., on 5 November. Curiosity landed on 6 August 2012 in Gale Crater, an impact crater 155 kilometers in diameter. During the next 2 years, the mission will characterize the geologic setting and search for signs of past habitable conditions. Curiosity project scientist John Grotzinger of the California Institute of Technology (Caltech) noted that Curiosity's instruments have begun sampling the Martian atmosphere. On 2 November, NASA announced that the mission's first atmospheric measurements had not detected any clear evidence of methane in the Martian atmosphere.

Balcerak, Ernie

2012-11-01

72

HLY0602: An integrated geophysical and geological study of the western Canada Basin  

NASA Astrophysics Data System (ADS)

The USCGC Healy cruise, HLY0602, departed Barrow on 19 July 2006 and ended prematurely on the 22nd of August in Nome, Alaska. HLY0602 was an integrated geophysical and geological study of the western Canada Basin including Northwind Ridge, Chukchi Cap and the Mendeleev Ridge. The IBCAO chart of Arctic bathymetry (Jakobsson, et al., 2000) gives the impression that there is comprehensive bathymetric coverage of the western Canada Basin. While in general, the IBCAO coverage is accurate, there are a number of places where multibeam data indicate significant discrepancies. For instance, the large north-south trough on the eastern margin of Chukchi Cap at 163W appears on the IBCAO map to have a possible seamount on the eastern edge of the trough at 77.9N. We surveyed that region and found an extremely flat-floored trough with a depth of 2708 5 m with no sign of a seamount within 10 km of where it is shown on the IBCAO map. On Chukchi Cap there is an apparent ~ 900 m deep trough in the center that is in fact no deeper than ~ 700 m. Multibeam bathymetric surveying of Mendeleev Ridge confirmed the numerous pockmarks found by HLY0504 with even greater concentrations of the pockmarks found to the south along Mendeleev Ridge. A number of major slump features were found on the northern margin of Arlis Plateau at the southern end of Mendeleev Ridge. If the pockmarks are associated with high gas content, then the level of organic rich sediments may be similar to those found on the Lomonosov Ridge by IODP drilling (Backman et al., 2006). Backman, J., Moran, K., McInroy, D.B., Mayer, L.A., and the Expedition 302 Scientists, 2006. Proc. IODP, 302: Edinburgh (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.302.2006 Jakobsson, M., Cherkis, N.Z., Woodward, J., Coakley, B., Macnab, R., 2000. A new grid of Arctic bathymetry: a significant resorce for scientists and mapmakers. EOS Transactions 81(9), 89, 93, 96.

Lawver, L.; Davis, M.; van Avendonk, H.; Hornbach, M.; Vermeesch, P.; Henkart, M.; Henkart, P.

2006-12-01

73

United States Geological Survey, Earthquake Hazards Program: Earthquake Research  

NSDL National Science Digital Library

This site describes the research activities of the Earthquake Hazards Program (EHP) of the United States Geological Survey (USGS). The activities include: borehole geophysics and rock mechanics, crustal deformation, earthquake information, earthquake geology and paleoseismology, hazards, seismology and earth structure, and strong motion seismology, site response, and ground motion. Other links include: earthquake activity, earthquake facts and education, earthquake products, hazards and preparedness, regional websites, and seismic networks.

74

The U.S. Geological Survey's gravity program in California  

Microsoft Academic Search

Since the 1963 gravity symposium, the U.S. Geological Survey has entered into a cooperative program with the California Division of Mines and Geology, the Army Map Service, and several universities for the purpose of completing a 5-mgal Bouguer gravity map of the entire State of California at a scale of 1:250,000 by 1970. The areal division of responsibility within the

Howard W. Oliver

1969-01-01

75

Investigating Atmospheric Mercury with the U.S. Geological Survey Mobile Mercury Laboratory  

USGS Publications Warehouse

Atmospheric mercury is thought to be an important source of mercury present in fish, resulting in numerous local, statewide, tribal, and province-wide fish consumption advisories in the United States and Canada (U.S. Environmental Protection Agency, 2007a). To understand how mercury occurs in the atmosphere and its potential to be transferred from the atmosphere to the biosphere, the U.S. Geological Survey (USGS) has been investigating sources and forms of atmospheric mercury, especially in locations where the amount of mercury deposited from precipitation is above average.

Kolker, Allan

2007-01-01

76

Mineral resources, geological structure, and landform surveys  

NASA Technical Reports Server (NTRS)

Diagnostic ERTS imagery has been used to pinpoint surface conditions associated with known mining districts. These include enhancements which depict hitherto unrecognized surface alteration and allow analysis of ore-controlling fractures distribution in a regional context. ERTS has likewise provided observational data containing previously unrecognized surface anomalies in large oil-producing basins which correlate closely with known oil fields. These observational data offer promise of providing new and powerful techniques for oil exploration, especially if further work using more sophisticated enhancement-processing proves capable of emphasizing the anomalies. ERTS is showing a better-than-anticipated potential for producing accurate small-scale (large-area) geologic maps, often containing details that were previously not recorded on similar regional maps. The maps produced from ERTS imagery can be prepared more effectively than previously possible, mainly because of the synoptic, multispectral, and repetitive character of ERTS data. ERTS has also provided extensive information on possible geologic hazards. Many new fractures have been identified in several regions of the Pacific Coast seismic belt that have histories of recent earthquakes. This has obvious implications for engineering projects such as dams, aqueducts, and transportation routes. In the mid-continent area, ERTS data have been used to predict zones of rooffall danger in a working coal mine from newly discovered lineations (probably fractures) used as indicators of hazards.

Short, N. M.

1974-01-01

77

Christopher U.S. Geological Survey  

E-print Network

; Hydraulic modeling; Computer programming (C/C++, Fortran, Perl), Field survey; Geographic information systems (GIS); Product-development management; Manufacturing engineering EDUCATION Ph.D. (2006) Hydrology removal. · Researching the sediment transport of asbestos fibers in flowing water. Hydrologist U

78

The British Geological Survey and the petroleum industry  

SciTech Connect

The British Geological Survey is the UK`s national centre for earth science information with a parallel remit to operate internationally. The Survey`s work covers the full geoscience spectrum in energy, mineral and groundwater resources and associated implications for land use, geological hazards and environmental impact. Much of the work is conducted in collaboration with industry and academia, including joint funding opportunities. Activities relating directly to hydrocarbons include basin analysis, offshore geoscience mapping, hazard assessment, fracture characterization, biostratigraphy, sedimentology, seismology, geomagnetism and frontier data acquisition techniques, offshore. The BGS poster presentation illustrates the value of the collaborative approach through consortia support for regional offshore surveys, geotechnical hazard assessments and state-of-the-art R & D into multicomponent seismic imaging techniques, among others.

Chesher, J.A. [Geological Survey, Edinburgh (United Kingdom)

1995-08-01

79

Stigma in Canada: Results From a Rapid Response Survey  

PubMed Central

Objective: Our paper presents findings from the first population survey of stigma in Canada using a new measure of stigma. Empirical objectives are to provide a descriptive profile of Canadians expectations that people will devalue and discriminate against someone with depression, and to explore the relation between experiences of being stigmatized in the year prior to the survey among people having been treated for a mental illness with a selected number of sociodemographic and mental healthrelated variables. Method: Data were collected by Statistics Canada using a rapid response format on a representative sample of Canadians (n = 10 389) during May and June of 2010. Public expectations of stigma and personal experiences of stigma in the subgroup receiving treatment for a mental illness were measured. Results: Over one-half of the sample endorsed 1 or more of the devaluation discrimination items, indicating that they believed Canadians would stigmatize someone with depression. The item most frequently endorsed concerned employers not considering an application from someone who has had depression. Over one-third of people who had received treatment in the year prior to the survey reported discrimination in 1 or more life domains. Experiences of discrimination were strongly associated with perceptions that Canadians would devalue someone with depression, younger age (12 to 15 years), and self-reported poor general mental health. Conclusions: The Mental Health Experiences Module reflects an important partnership between 2 national organizations that will help Canada fulfill its monitoring obligations under the United Nations Convention on the Rights of Persons with Disabilities and provide a legacy to researchers and policy-makers who are interested in monitoring changes in stigma over time.

Stuart, Heather; Patten, Scott B; Koller, Michelle; Modgill, Geeta; Liinamaa, Tiina

2014-01-01

80

A Survey of Geologic Resources. Chapter 11  

NASA Technical Reports Server (NTRS)

This chapter focuses on the resources available from the Moon itself: regolith, geologically concentrated materials, and lunar physical features that will enable habitation and generation of power on the surface. This chapter briefly covers the formation of the Moon and thus the formation of the crust of the Moon, as well as the evolution of the regolith. The characteristics of the regolith are provided in some detail, including its mineralogy and lithology. The location of high concentrations of specific minerals or rocks is noted. Other ideal locations for in situ resource utilization technology and lunar habitation are presented. This chapter is intended to be a brief review of current knowledge, and to serve as a foundational source for further study. Each concept presented here has a wealth of literature associated with it; the reader is therefore directed to that literature with each discussion. With great interest in possible manned lunar landings and continued study of the Moon by multiple satellites, the available information changes regularly.

Edmonson, Jennifer; Rickman, Doug

2012-01-01

81

Geology and quaternary environments of the first preglacial palaeolithic sites found in Alberta, Canada  

NASA Astrophysics Data System (ADS)

A pebble-tool industry, including two chronologically different stone artifact assemblages reminiscent of the Eurasian Palaeolithic, has been recorded in Late Pleistocene sections at two locations in the Bow River valley, southwestern Alberta. Authenticity and provenance of the deeply buried archaeological record is evidenced by culture-diagnostic percussion-flaked artifacts incorporated in preglacial fluvial gravels and overlying glacial diamictons and by identical textural patterns on stone tools found in and eroded from the exposures. Geological context suggests a fluctuating braided river setting during the earlier occupation. Discarded ( lower series) quartzite and hard carbonate rock artifacts, subglacially entrained into the Cordilleran Bow Valley till, document distortion of the earlier site (Silver Springs) by a valley glacier emerging from the Rocky Mountain ice-lobe. Following the valley deglaciation, a later occupation episode is manifested by a formally analogous flaked lithic assemblage excavated in situ on top of the till at a nearby site (Varsity Estates). This more recent occupation surface was subsequently buried under 24 m of glaciolacustrine sediments after submergence of the river valley by a proglacial lake (Glacial Lake Calgary) dammed by the Laurentide ice advance into the eastern Calgary area, implying a minimum early Late Wisconsinan age (ca. >21,000 BP) for the lithic industry. The presence of the later ( upper series) artifact assemblage and the associated palynological data do not support the view that envisages an extremely cold, inhospitable glacial environment on the eastern slopes of the Canadian Rocky Mountains throughout the Late Wisconsinan. Their stratigraphic position also indicates temporal asynchroneity between Cordilleran and Laurentide ice during the last glacial maximum in the Bow River valley, the area of presumed coalescence of the two ice-masses. Although a more rapid response of the western mountain glacier to climatic change is evident, the apparent absence of pedogenic alteration of the till surface and the fresh appearance of the excavated stone artifacts suggest that a short time span separated the two glacial events. The archaeological record provides evidence of an earlier Palaeo-American peopling of western interior Canada long before the emergence of the Final Pleistocene Palaeoindian cultures, characterized by elaborate bifacial stone projectile-point flaking technologies traditionally regarded as the earliest cultural manifestations in North America. Silver Springs is the first early site on the continent found below glacial deposits. Realization that other American Palaeolithic sites, potentially of considerable antiquity, should be recognized in similar geological settings, and introduction of adequate geoarchaeological site-survey techniques, have crucial relevance for elucidation of the earliest New World prehistory.

Chlachula, Ji?

82

U. S. Department of the Interior U. S. Geological Survey  

E-print Network

-trace-element data on selected and potentially minable coal beds and zones of the Fort Union Formation (Paleocenei U. S. Department of the Interior U. S. Geological Survey National Coal Resource Assessment Non-Proprietary Data: Location, Stratigraphy, and Coal Quality for Selected Tertiary Coal in the Northern Rocky

83

REDUCING THE RISK FROM VOLCANO HAZARDS UNITED STATES GEOLOGICAL SURVEY  

E-print Network

REDUCING THE RISK FROM VOLCANO HAZARDS UNITED STATES GEOLOGICAL SURVEY VolcanicAsh--Danger toAircraft intheNorthPacific The world's busy air traffic corridors pass over hundreds of volcanoes ca- pable and millions of dollars of cargo over volcanoes each day. Volcanic ash can be a serious hazard to aviation even

Torgersen, Christian

84

DENISE M. AKOB U.S. Geological Survey  

E-print Network

DENISE M. AKOB U.S. Geological Survey National Research Program (Water) 430 National Center Reston, National Research Program (Water), Microbiology and Molecular Ecology Laboratory. 2012-current of Eukaryotic Microbiology, published online ahead of print June 27, 2013, doi: 10.1111/jeu.12054. 3. Gray, S. M

85

References on Bentonite U.S. Geological Survey  

E-print Network

descriptive model of sedimentary bentonite; deposit subtype; calcium bentonite: in Additional descriptive of Mines prior to 1996), Minerals Yearbook, annual. Hosterman, J.W., 1984, Ball clay and bentonite deposits mineral deposits, Orris, G. J., ed., U.S. Geological Survey Open File Report 98-505, p. 18-20. Hosterman

86

A preliminary geochemical map for arsenic in surficial materials of Canada and the United States  

Microsoft Academic Search

Over the past 30 a, regional and national solid-phase geochemical surveys have been conducted by the United States Geological Survey and the Geological Survey of Canada. In the present paper the authors have examined the distribution of As in stream-sediment and soil samples of the US and Canada in terms of geologic and anthropogenic components. The results of the compilations

Andrew E Grosz; Jeffrey N Grossman; Robert Garrett; Peter Friske; David B Smith; Arthur G Darnley; Eric Vowinkel

2004-01-01

87

Canada-France Redshift Survey - X. The quasar sample  

NASA Astrophysics Data System (ADS)

Six objects with broad emission lines and redshifts from 0.48 to 2.07 were discovered among 736 extragalactic objects in the Canada-France Redshift Survey (CFRS). Although the luminosities of half of the objects are such that they are in the Seyfert regime (M_B<~-23), all would be designated as quasars in traditional surveys. Since the only selection criterion was that 17.5<=I_AB<=22.5, or approximately B<23 (assuming a continuum power-law slope alpha=-0.5), these quasars represent an unbiased, flux-limited sample. Although uncertain, the implied surface density, 200^-120-80 deg^-2, is the highest yet measured, and is in good agreement with extrapolations from other faint surveys and the evolving luminosity function models of Boyle. The distributions of the continuum properties, emission-line strengths, etc. of the quasars do not differ significantly from those of quasars selected by other means, and therefore they would have been detected in most traditional surveys. Three of the quasars may be associated with clusters or large structures of galaxies at z<~1.

Schade, David; Crampton, David; Hammer, F.; Le Fevre, O.; Lilly, S. J.

1996-01-01

88

The U.S. Geological Survey in Alaska, 1979 programs  

USGS Publications Warehouse

This circular describes the 1979 programs of the U.S. Geological Survey in Alaska. The mission of the Geological Survey is to identify the Nation 's land, water, energy, and mineral resources; to classify federally-owned mineral lands and water-power sites; to resolve the exploration and development of energy and natural resources on Federal and Indian lands; and to explore and appraise the petroleum potential of the National Petroleum Reserve in Alaska. Alaska is at once the largest, the least populated, the least explored, and the least developed State in the Nation. More than half of the Nation 's 600 million acres of Outer Continental Shelf lies off Alaska 's coast, and nearly half of the remaining 762 million acres of Federal land are within its borders. Its resources of all kinds present an opportunity to demonstrate how the needs of both conservation and development can be met for the benefit of the American people. (Kosco-USGS)

Reed, Katherine M., (Edited By); Technical assistance by Gilmore, Robert F.; Harris, Linda-Lee; Tennison, Lisa D.

1979-01-01

89

Demographic survey of veterinarians employed in western Canada  

PubMed Central

The objective of this study was to generate demographic data on veterinarians working in western Canada. A sample of 551 veterinarians was randomly selected from a population of 2474 veterinarians employed in western Canada, 425 (77.1%) of whom responded to the survey. The respondents were evenly split between males (53.1%) and females (46.9%). More than half (58.0%) of the private practitioners practised exclusively on companion animals (small animals and horses), while 2.9% devoted 100% of their time to food animals. There were 351 respondents who had had ? 2 employers since graduation; 80% of those who had begun their careers in companion animal (CA) practice had remained in this type of practice, while 54.3% of those who had begun their careers in mixed animal practice had switched to CA practice. Analyses of wage and workload data from 85 full-time veterinary employees showed that CA practitioners worked the fewest hours/week (47.0), had the least number of evenings on-call/month (3.7), and earned the highest hourly wage ($35.79) as compared with non-CA practitioners. PMID:19721782

Jelinski, Murray D.; Campbell, John R.; Naylor, Jonathan M.; Lawson, Karen L.; Derkzen, Dena

2009-01-01

90

Demographic survey of veterinarians employed in western Canada.  

PubMed

The objective of this study was to generate demographic data on veterinarians working in western Canada. A sample of 551 veterinarians was randomly selected from a population of 2474 veterinarians employed in western Canada, 425 (77.1%) of whom responded to the survey. The respondents were evenly split between males (53.1%) and females (46.9%). More than half (58.0%) of the private practitioners practised exclusively on companion animals (small animals and horses), while 2.9% devoted 100% of their time to food animals. There were 351 respondents who had had > or = 2 employers since graduation; 80% of those who had begun their careers in companion animal (CA) practice had remained in this type of practice, while 54.3% of those who had begun their careers in mixed animal practice had switched to CA practice. Analyses of wage and workload data from 85 full-time veterinary employees showed that CA practitioners worked the fewest hours/week (47.0), had the least number of evenings on-call/month (3.7), and earned the highest hourly wage (35.79 dollars) as compared with non-CA practitioners. PMID:19721782

Jelinski, Murray D; Campbell, John R; Naylor, Jonathan M; Lawson, Karen L; Derkzen, Dena

2009-06-01

91

77 FR 11565 - Agency Information Collection: Comment Request AGENCY: United States Geological Survey (USGS...  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF THE INTERIOR U.S. Geological Survey [GX12GC009PLSG0] Agency Information...Request AGENCY: United States Geological Survey (USGS), Interior ACTION: Notice of...Clearance Officer, U.S. Geological Survey, 12201 Sunrise Valley Drive, MS...

2012-02-27

92

76 FR 13207 - Announcement of the U.S. Geological Survey Science Strategy Planning Feedback Process  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF THE INTERIOR U.S. Geological Survey [USGS-GX11AA0000A1300] Announcement of the U.S. Geological Survey Science Strategy Planning Feedback Process AGENCY: U.S. Geological Survey, Interior. ACTION: Notice of Feedback...

2011-03-10

93

77 FR 34062 - Announcement of the U.S. Geological Survey Science Strategy Planning Feedback Process  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF THE INTERIOR U.S. Geological Survey [USGS-GX11AA0000A1300] Announcement of the U.S. Geological Survey Science Strategy Planning Feedback Process AGENCY: U.S. Geological Survey, Interior. ACTION: Notice of Feedback...

2012-06-08

94

77 FR 43110 - Announcement of the U.S. Geological Survey Science Strategy Planning Feedback Process  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF THE INTERIOR U.S. Geological Survey [USGS-GX11AA0000A1300] Announcement of the U.S. Geological Survey Science Strategy Planning Feedback Process AGENCY: U.S. Geological Survey, Interior. ACTION: Notice of feedback...

2012-07-23

95

50 CFR 37.45 - Exploration by the U.S. Geological Survey.  

Code of Federal Regulations, 2010 CFR

... Exploration by the U.S. Geological Survey. 37.45 Section 37.45 Wildlife... Exploration by the U.S. Geological Survey. Notwithstanding the requirement...shall be submitted, the U.S. Geological Survey may at any time apply for a...

2010-10-01

96

Digital photogrammetry at the U.S. Geological Survey  

USGS Publications Warehouse

The U.S. Geological Survey is converting its primary map production and revision operations to use digital photogrammetric techniques. The primary source of data for these operations is the digital orthophoto quadrangle derived from National Aerial Photography Program images. These digital orthophotos are used on workstations that permit comparison of existing vector and raster data with the orthophoto and interactive collection and revision of the vector data.

Greve, Clifford W.

1995-01-01

97

U.S. Geological Survey Business Partner Program  

USGS Publications Warehouse

The Business Partner Program is composed of a network of private sector organizations that distribute U.S. Geological Survey (USGS) products. By engaging the private sector, State and local government, and academic and nonprofit organizations in product dissemination, the USGS expects to increase the availability of its products to end users, locate customer service closer to the user, and provide cost savings to the Federal Government.

Geological Survey (U.S.)

1999-01-01

98

Illinois State Geological Survey Circular 578 69 Chapter 13: U.S. Geological Survey  

E-print Network

- nology. Everything that shapes the Earth or affects its functions does so in 3-D space: water flowing, and human society. Until now, USGS map products have been generated and distributed primarily as 2-D maps. Examples of geological mapping in 3-D include characteriza- tion of the subsurface for resource assessments

99

The Corossol structure: A possible impact crater on the seafloor of the northwestern Gulf of St. Lawrence, Eastern Canada  

E-print Network

de geographie, Universite Laval, Quebec City, Quebec G1V 0A6, Canada 2 Canada Research Chair City, Quebec G1K 7P4, Canada 4 Natural Resources Canada, Geological Survey of Canada, Quebec City, Rimouski, Quebec G5L 3A1, Canada 3 Departement de geologie et de genie geologique, Universite Laval, Quebec

100

Rheological and geological constraints on the earthquake distribution in the Charlevoix Seismic Zone, Quebec, Canada  

NASA Astrophysics Data System (ADS)

Located an the St. Lawrence River some 100 km downstream from Quebec City, the Charlevoix Seismic Zone (CSZ) is the most active seismic zone of eastern Canada with 5 historical earthquakes in the magnitude 6 to 7 range and continuous microearthquake activity. Between October 1977 and December 1997, some 1500 earthquakes with magnitudes between --1.0 and 5.0 were recorded by a local seismograph network. Epicentres define a 30 by 85 km ellipse with the long axis parallel to the river, with 99% of hypocentres shallower than 25 km depth (D99%). Earthquakes are not distributed uniformly across the seismic zone, but concentrate in groups separated by less active areas. On the basis of the heat conduction equation and Grenvillian surface heat flow, the temperature at D99% has been estimated to be between 215 and 355C. These temperatures and the inferred quartz-depleted mid- and lower-crustal compositions imply a brittle-ductile transition deeper than 25 km. The quartz-depleted mid- to lower crust is supported by the high P-velocities revealed by seismic refraction surveys. This depth may represent the passage from velocity weakening to velocity strengthening if the onset of flow in hydrated feldspars occurs at temperatures in the 300--350C range. With an assumed maximum crustal stress difference of about 200 MPa, fault reactivation at mid-crustal depth can occur with a low friction coefficient and/or with a high pore fluid pressure. Remote sensing, magnetic, gravimetric and seismic reflection data are used to define the positions of geological faults. Most regional normal faults correspond to lineaments or geophysical trends generally parallel to the St. Lawrence River. Most regional faults bound active volumes while one correlates with earthquake hypocentres, including some magnitude >4 events. The orientations of the local stress and of the reactivated faults vary across the CSZ. The comparison of some 20 focal mechanisms with earthquake groups and multiplets suggest reactivated faults with various orientations, not necessarily parallel to the regional paleo-rift faults. Most microearthquakes appear to occur in highly fractured volumes, partly related to the impact structure. No surface rupture is found on the seismic reflection lines acquired on the St. Lawrence River. Using local earthquake data, a pseudo-2D layered velocity model is proposed. The main upper crustal velocity perturbations are imaged. From Vp/Vs ratio information, the CSZ velocity structure differs from that of the neighbouring Laurentides Park region, where upper crustal basic rocks are found. Even with the addition of all local stress contributors, the CSZ is not subject to substantially higher stress difference levels than the rest of Eastern Canada. Consequently, the anomalous CSZ earthquake activity must be due to inherent crustal weakness and/or high pore fluid pressure. Although the presence of a gouge may weaken some faults, the existence of pervasive high pore-fluid pressure coupled with a high degree of fracturing is the favoured explanation for the weak crust that gives rise to earthquake activity. A qualitative model is proposed where some rift faults act as conduits to crustal fluids under pressure, triggering earthquakes on these faults and in neighbouring fractured volumes. (Abstract shortened by UMI.)

Lamontagne, Maurice

101

Canada's Deep Geological Repository for Used Nuclear Fuel - Geo-scientific Site Evaluation Process - 13117  

SciTech Connect

The Nuclear Waste Management Organization (NWMO) is responsible for implementing Adaptive Phased Management (APM), the approach selected by the Government of Canada for long-term management of used nuclear fuel generated by Canadian nuclear reactors. The ultimate objective of APM is the centralized containment and isolation of Canada's used nuclear fuel in a Deep Geological Repository in a suitable rock formation at a depth of approximately 500 meters (m) (1,640 feet [ft]). In May 2010, the NWMO published a nine-step site selection process that serves as the road map to decision-making on the location for the deep geological repository. The safety and appropriateness of any potential site will be assessed against a number of factors, both technical and social in nature. The selected site will be one that can be demonstrated to be able to safely contain and isolate used nuclear fuel, protecting humans and the environment over the very long term. The geo-scientific suitability of potential candidate sites will be assessed in a stepwise manner following a progressive and thorough site evaluation process that addresses a series of geo-scientific factors revolving around five safety functions. The geo-scientific site evaluation process includes: Initial Screenings; Preliminary Assessments; and Detailed Site Evaluations. As of November 2012, 22 communities have entered the site selection process (three in northern Saskatchewan and 18 in northwestern and southwestern Ontario). (authors)

Blyth, Alec; Ben Belfadhel, Mahrez; Hirschorn, Sarah; Hamilton, Duncan; McKelvie, Jennifer [Nuclear Waste Management Organization, 22 St. Clair Avenue East, Toronto, Ontario M4T 2S3 (Canada)] [Nuclear Waste Management Organization, 22 St. Clair Avenue East, Toronto, Ontario M4T 2S3 (Canada)

2013-07-01

102

A brief history of the U.S. Geological Survey  

USGS Publications Warehouse

Established by an Act of Congress in 1879 and charged with responsibility for "classification of the public lands, and examination of the geological structure, mineral resources, and products of the national domain," the U. S. Department of the Interior's Geological Survey has been the Nation's principal source of information about its physical resources the configuration and character of the land surface, the composition and structure of the underlying rocks, and the quality, extent, and distribution of water and mineral resources. Although primarily a research and fact-finding agency, it has responsibility also for the classification of Federal mineral lands and waterpower sites, and since 1926 it has been responsible for the supervision of oil and mining operations authorized under leases on Federal land. From the outset, the Survey has been concerned with critical land and resource problems. Often referred to as the Mother of Bureaus, many of its activities led to the formation of new organizations where a management or developmental function evolved. These included the Reclamation Service (1902), the Bureau of Mines (1910), the Federal Power Commission (1920), and the Grazing Service (1934, since combined with other functions as the Bureau of Land Management). Mrs. Rabbitt's summary of the Survey's history in the following pages brings out well the development of these diverse activities and the Survey's past contributions to national needs related to land and resources.

Rabbitt, Mary C.

1975-01-01

103

Digital Field Mapping with the British Geological Survey  

NASA Astrophysics Data System (ADS)

The BGSSIGMA project was initiated in 2001 in response to a major stakeholder review of onshore mapping within the British Geological Survey (BGS). That review proposed a significant change for BGS with the recommendation that digital methods should be implemented for field mapping and data compilation. The BGSSIGMA project (System for Integrated Geoscience MApping) is an integrated workflow for geoscientific surveying and visualisation using digital methods for geological data visualisation, recording and interpretation, in both 2D and 3D. The project has defined and documented an underpinning framework of best practice for survey and information management, best practice that has then informed the design brief and specification for a toolkit to support this new methodology. The project has now delivered BGSSIGMA2012. BGSSIGMA2012 is a integrated toolkit which enables assembly and interrogation/visualisation of existing geological information; capture of, and integration with, new data and geological interpretations; and delivery of 3D digital products and services. From its early days as a system which used PocketGIS run on Husky Fex21 hardware, to the present day system which runs on ruggedized tablet PCs with integrated GPS units, the system has evolved into a complete digital mapping and compilation system. BGSSIGMA2012 uses a highly customised version of ESRI's ArcGIS 10 and 10.1 with a fully relational Access 2007/2010 geodatabase. BGSSIGMA2012 is the third external release of our award-winning digital field mapping toolkit. The first free external release of the award-winning digital field mapping toolkit was in 2009, with the third version (BGS-SIGMAmobile2012 v1.01) released on our website (http://www.bgs.ac.uk/research/sigma/home.html) in 2013. The BGSSIGMAmobile toolkit formed the major part of the first two releases but this new version integrates the BGSSIGMAdesktop functionality that BGS routinely uses to transform our field data into corporate standard geological models and derivative map outputs. BGSSIGMA2012 is the default toolkit within BGS for bedrock and superficial geological mapping and other data acquisition projects across the UK, both onshore and offshore. It is used in mapping projects in Africa, the Middle East and the USA, and has been taken to Japan as part of the Tohoku tsunami damage assessment project. It is also successfully being used worldwide by other geological surveys e.g. Norway and Tanzania; by universities including Leicester, Keele and Kyoto, and by organisations such as Vale Mining in Brazil and the Montana Bureau of Mines and Geology. It is used globally, with over 2000 licenses downloaded worldwide to date and in use on all seven continents. Development of the system is still ongoing as a result of both user feedback and the changing face of technology. Investigations into the development of a BGSSIGMA smartphone app are currently taking place alongside system developments such as a new and more streamlined data entry system.

Leslie, Graham; Smith, Nichola; Jordan, Colm

2014-05-01

104

Geological constraints on the emplacement of the Snap Lake kimberlite dyke, NW Territories, Arctic Canada  

NASA Astrophysics Data System (ADS)

The Snap Lake kimberlite dyke, Northwest Territories, Canada, is a complex segmented ore-body. Detailed geological mapping was undertaken with a view of improving the productivity and efficiency of the mining operation. The relationship between the igneous geology of the kimberlite and complex structural features (e.g. ramps and steps) were investigated, to improve predictability of the dyke geometry. Geological mapping and analysis have established that the dyke is a multi-phase intrusion with four different magmatic lithofacies. In particular, olivine-rich and olivine-poor varieties of hypabyssal kimberlite have been identified. Key observations are that olivine-rich (phlogopite-poor) lithofacies has a strong tendency to be located where the dyke is thickest and that there is a good correlation between dyke thickness, olivine crystal size and crystal content. Accordingly the olivine-poor (phlogopite-rich) lithofacies tends to be most abundant where the dyke is thinnest. Empirical observations based on diamond size distributions recorded in three sets of closely spaced bulk samples, suggest that the diamond distributions might be controlled by the proportion of olivine-rich kimberlite in the sample. These relationships potentially have major economic implications for exploration and mining at other diamondiferous intrusions. Complex structural features are associated with changes in dyke thickness, and therefore parameters such as crystal and lithic size and content may allow better prediction of dyke complexity at a mining scale.

Gernon, T. M.; Sparks, S. J.; Field, M.; Ogilvie-Harris, R. C.

2009-05-01

105

The U.S. Geological Survey in Alaska 1980 programs  

USGS Publications Warehouse

This circular describes the 1980 programs of the U.S. Geological Survey in Alaska. A brief description of the Alaskan operations of each major division of the Survey is followed by project descriptions arranged by geographic regions in which the work takes place. The mission of the Geological Survey is to identify the Nation 's land, water, energy, and mineral resources; to classify federally-owned mineral lands and waterpower sites; to resolve the exploration and development of energy and natural resources on Federal and Indian lands; and to explore and appraise the petroleum potential of the National Petroleum Reserve in Alaska. Alaska is at once the largest, the least populated, the least explored, and the least developed State in the Nation. More than half of the Nation 's 600 million acres of Outer Continental Shelf lies off Alaska 's coast. The land area of Alaska contains 375 million acres, 16 percent of the onshore land of the Nation. Its resources of all kinds present an opportunity to demonstrate how the needs of both conservation and development can be met for the benefit of the American people. (USGS)

Reed, Katherine M., (Edited By); Technical assistance by Gilmore, Robert F.; Harris, Linda-Lee; Tennison, Lisa D.

1980-01-01

106

U.S. GEOLOGICAL SURVEY--REDUCING THE RISK FROM VOLCANO HAZARDS U.S. Geological Survey's Alert-Notification System for Volcanic Activity  

E-print Network

U.S. GEOLOGICAL SURVEY--REDUCING THE RISK FROM VOLCANO HAZARDS U.S. Geological Survey's Alert, reprinted 2014 The Need for a National Volcano Alert System Under the Stafford Act (Public Law 93 of potential volcanic disasters. The USGS, through its five volcano observatories, determines the alert levels

Torgersen, Christian

107

Geophysical and Geologic Training of the Afghan Geological Survey, May, 2008  

NASA Astrophysics Data System (ADS)

Afghanistan lies within the Alpine-Himalayan orogeny, and consists of four primary tectonic units: (1) the North Afghan Platform, part of the greater Kazakhstan craton that includes Turkmenistan and Uzbekistan; (2) the mountainous Hindu Kush-Pamirs in the northeast; (3) the transpressional plate boundary at the Chaman fault near the border with Pakistan; and (4) the southern accreted terranes located south of the east-west oriented Herat fault. The diverse geology of Afghanistan affords the country abundant natural resources, as well as many natural hazards. In order to assist in the identification of these resources and to map hazardous faults, a multi-agency consortium including the Afghan Ministry of Mines and Industry, the USGS and the US Navel Research Lab conducted a detailed airborne geophysical survey of the western half of Afghanistan during 2007. Over 110,000 km of data were collected, including aeromagnetic, gravity, hyperspectral imagery, synthetic aperture radar and photogrammetric data. These data provide remarkable images of the surficial and sub-surface structure of the country. Armed with these new, high quality data, USGS trainers conducted an in-depth training course at the offices of the Afghan Geological Survey (AGS) during May, 2008. Eighty staff members of the AGS attended the four-day course which covered the following topics: (1) the geology and tectonics of Afghanistan; (2) a synthesis of modern plate tectonic processes; (3) use of geophysical and geological data to identify natural resources and hazardous faults. Particular emphasis was placed on oil and gas, mineral, coal and water resources. Earthquake and landslide hazards in Afghanistan were also discussed in detail. The building of scientific and technical capabilities at the AGS is a high priority because the development of their natural resources will have a positive impact on economic growth in Afghanistan. Future courses will benefit from hands-on training in methods of geophysical data interpretation.

Mooney, W. D.; Bohannon, R.; Abraham, J.; Medlin, J.

2008-12-01

108

Earth History at the Century Mark of the U.S. Geological Survey  

Microsoft Academic Search

Earth history involves all aspects of geological and biological evolution, especially paleontology and stratigraphy. Early paleontological exploration of the western United States by and before the U.S. Geological Survey featured the dramatic discoveries and rivalries of the great vertebrate paleontologists Leidy, Cope, Marsh, and Osborn. Invertebrate paleontology and paleobotany in the U.S. Geological Survey blossomed with emphasis on practical missions.

George Gaylord Simpson

1979-01-01

109

Energy Resources Program of the U.S. Geological Survey  

USGS Publications Warehouse

Our Nation faces the simultaneous challenges of increasing demand for energy, declining domestic production from existing oil and gas fields, and increasing expectations for environmental protection. The Energy Information Administration (2000) forecasts that worldwide energy consumption will increase 32 percent between 1999 and 2020 because of growth of the world economy. Forecasts indicate that in the same time period, U.S. natural gas consumption will increase 62 percent, petroleum consumption will increase 33 percent, and coal consumption will increase 22 percent. The U.S. Geological Survey provides the objective scientific information our society needs for sound decisions regarding land management, environmental quality, and economic, energy, and strategic policy.

Weedman, Suzanne

2001-01-01

110

Water Testing and Analysis by the United States Geological Survey  

NSDL National Science Digital Library

This activity enables students to meet and interact with practicing scientists, to see scientific equipment being used by professionals, and to participate in a local data gathering and analysis exercise. It also should provide the student with some information on the attributes of clean or potable water. Each student will collect a water sample and bring it to class to be tested by a visiting United States Geological Survey (USGS) scientist. They will then fill out data sheets and answer questions based on this data.

111

Appraising U.S. Geological Survey science records  

USGS Publications Warehouse

The U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center has legislative charters to preserve and make accessible land remote sensing records important to the United States. This essay explains the appraisal process developed by EROS to ensure the science records it holds and those offered to it align with those charters. The justifications behind the questions employed to weed and to complement the EROS archive are explained along with the literature reviewed supporting their inclusion. Appraisal results are listed by individual collection and include the recommendations accepted by EROS management. Reprinted by permission of the publisher.

Faundeen, John L.

2010-01-01

112

Chapter 50: Geology and tectonic development of the Amerasia and Canada Basins, Arctic Ocean  

USGS Publications Warehouse

Amerasia Basin is the product of two phases of counterclockwise rotational opening about a pole in the lower Mackenzie Valley of NW Canada. Phase 1 opening brought ocean-continent transition crust (serpentinized peridotite?) to near the seafloor of the proto-Amerasia Basin, created detachment on the Eskimo Lakes Fault Zone of the Canadian Arctic margin and thinned the continental crust between the fault zone and the proto-Amerasia Basin to the west, beginning about 195 Ma and ending prior to perhaps about 160 Ma. The symmetry of the proto-Amerasia Basin was disrupted by clockwise rotation of the Chukchi Microcontinent into the basin from an original position along the Eurasia margin about a pole near 72??N, 165 Wabout 145.5-140 Ma. Phase 2 opening enlarged the proto-Amerasia Basin by intrusion of mid-ocean ridge basalt along its axis between about 131 and 127.5 Ma. Following intrusion of the Phase 2 crust an oceanic volcanic plateau, the Alpha-Mendeleev Ridge LIP (large igneous province), was extruded over the northern Amerasia Basin from about 127 to 89-75 Ma. Emplacement of the LIP halved the area of the Amerasia Basin, and the area lying south of the LIP became the Canada Basin. ?? 2011 The Geological Society of London.

Grantz, A.; Hart, P. E.; Childers, V. A.

2011-01-01

113

U.S. Geological Survey Water Science Strategy  

USGS Publications Warehouse

This fact sheet describes the Water Science Strategy, presented in detail in Circular 1383-G, "U.S. Geological Survey Water Science Strategy--Observing, Understanding, Predicting, and Delivering Water Science to the Nation." This fact sheet looks at the relevant issues facing society and describes the strategy built around observing, understanding, predicting, and delivering water science for the next 5 to 10 years by building new capabilities, tools, and delivery systems to meet the Nations water-resource needs. This fact sheet presents the vision of water science for the U.S. Geological Survey and the societal issues that are influenced by, and in turn influence, the water resources of the Nation. The fact sheet describes the five goals of the Water Science Strategy. Nine priority actions also are presented, which combine and elevate the numerous specific strategic actions contained within Circular 1383-G. The fact sheet concludes with a discussion of the intended outcomes of the Water Science Strategy.

Evenson, Eric J.; Orndorff, Randall C.

2013-01-01

114

Malpractice in pediatric radiology: A survey in the United States and Canada  

Microsoft Academic Search

A survey of the chairmen of pediatric radiology departments in children's hospitals in Canada and the United States was undertaken to gain data on the subject of malpractice in pediatric radiology. Sixty-two members of the Society of Chairmen of Radiology in Children's Hospitals (SCORCH) were surveyed. Forty-two surveys (65%) were returned for analysis. Malpractice premiums paid per pediatric radiologist per

S. A. Royal; G. A. Cloud; W. M. Atchison

1994-01-01

115

Using an Internet Questionnaire to Characterize Bat Survey Efforts in the United States and Canada  

Microsoft Academic Search

Standardized survey methods are important for obtaining reliable information on wildlife populations. As a precursor to creating a regional bat-survey (Chiroptera) protocol, we distributed a questionnaire via e-mail to biologists responsible for conducting bat surveys in the United States and Canada. We received 415 responses from 45 states and 7 Canadian provinces or territories. Most of the responses were from

THEODORE J. WELLER; WILLIAM J. ZIELINSKI

2006-01-01

116

U.S. Department of the Interior November 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior November 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Gold Commodity Specialist U.S. Geological Survey 989 National Center,400 2013: July 4 16,700 9,570 26,300 5,370 49 5 August: Bolivia -- 477 288 764 265 -- -- Brazil -- 5 154

117

U.S. Department of the Interior March 2014 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior March 2014 U.S. Geological Survey pa Mineral Industry Surveys For information, contact: Amy Tolcin, Tin Commodity Specialist (Acting) U.S. Geological Survey 989 National Center in the comparable period of 2012. Peru, Bolivia, Indonesia, and Malaysia were, in descending order, the leading

118

U.S. Department of the Interior September 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior September 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Silver Commodity Specialist (acting) U.S. Geological Survey 989 85 78 -- -- -- -- -- -- 85 78 Belgium 1,510 1,060 -- -- -- -- -- -- 1,510 1,060 Bolivia -- -- 11

119

U.S. Department of the Interior March 2014 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior March 2014 U.S. Geological Survey Mineral Industry Surveys For information, contact: Florence C. Katrivanos, Silver Commodity Specialist U.S. Geological Survey 989 National -- -- 377 296 -- -- -- -- 377 296 Barbados -- -- 12 5 -- -- -- -- 12 5 Bolivia -- -- 8,080 5

120

U.S. Department of the Interior April 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior April 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Gold Commodity Specialist U.S. Geological Survey 989 National Center 22,500 10,700 33,300 7,880 19 195 December: Australia -- -- 475 475 1 -- -- Bolivia -- 1,300 -- 1

121

U.S. Department of the Interior March 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior March 2013 U.S. Geological Survey pa Mineral Industry Surveys For information, contact: James F. Carlin, Jr., Tin Commodity Specialist U.S. Geological Survey 989 National in 2012 were 36,900 t, an increase of 8% compared with those for 2011. Peru, Indonesia, Bolivia

122

U.S. Department of the Interior December 2012 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior December 2012 U.S. Geological Survey pa Mineral Industry Surveys For information, contact: James F. Carlin, Jr., Tin Commodity Specialist U.S. Geological Survey 989 National that in the comparable period of 2011. Peru, Indonesia, Bolivia, and Malaysia, in descending order, were the leading

123

U.S. Department of the Interior August 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior August 2013 U.S. Geological Survey pa Mineral Industry Surveys For information, contact: James F. Carlin, Jr., Tin Commodity Specialist U.S. Geological Survey 989 National, in descending order, Peru, Bolivia, Indonesia, and Thailand. The Platts Metals Week average composite price

124

U.S. Department of the Interior February 2014 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior February 2014 U.S. Geological Survey pa Mineral Industry Surveys For information, contact: Amy Tolcin, Tin Commodity Specialist (Acting) U.S. Geological Survey 989 National Center in the comparable period of 2012. Peru, Bolivia, Indonesia, and Malaysia were, in descending order, the leading

125

U.S. Department of the Interior April 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior April 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Silver Commodity Specialist (acting) U.S. Geological Survey 989,010 1,000 Belgium 115 125 -- -- -- -- -- -- 115 125 Bolivia -- -- 7,470 7,940 -- -- -- -- 7,470 7

126

U.S. Department of the Interior January 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior January 2013 U.S. Geological Survey pa Mineral Industry Surveys For information, contact: James F. Carlin, Jr., Tin Commodity Specialist U.S. Geological Survey 989 National that in the comparable period of 2011. Peru, Indonesia, Bolivia, and Malaysia, in descending order, were the leading

127

U.S. Department of the Interior June 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior June 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Silver Commodity Specialist (acting) U.S. Geological Survey 989,210 1,060 Australia 1,690 1,020 -- -- -- -- -- -- 1,690 1,020 Bolivia -- -- 16,000 15,400 -- -- -- -- 16

128

U.S. Department of the Interior February 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior February 2013 U.S. Geological Survey pa Mineral Industry Surveys For information, contact: James F. Carlin, Jr., Tin Commodity Specialist U.S. Geological Survey 989 National that in the comparable period of 2011. Peru, Indonesia, Bolivia, and Malaysia, in descending order, were the leading

129

U.S. Department of the Interior May 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior May 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Silver Commodity Specialist (acting) U.S. Geological Survey 989,000 407,000 97,100 134,000 7,110 2,320 -- -- 521,000 544,000 February: Bolivia -- -- 7,640 7

130

U.S. Department of the Interior August 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior August 2013 U.S. Geological Survey pa Mineral Industry Surveys For information, contact: James F. Carlin, Jr., Tin Commodity Specialist U.S. Geological Survey 989 National months of 2013 were, in descending order, Peru, Bolivia, Indonesia, and Thailand. The Platts Metals Week

131

U.S. Department of the Interior May 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior May 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Silver Commodity Specialist (acting) U.S. Geological Survey 989: Argentina -- -- 303 275 -- -- -- -- 303 275 Barbados -- -- 6 4 -- -- -- -- 6 4 Bolivia -- -- 12,700 12

132

U.S. Department of the Interior July 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior July 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Silver Commodity Specialist (acting) U.S. Geological Survey 989,850 Barbados 5 3 -- -- -- -- -- -- 5 3 Belgium 1,880 1,790 -- -- -- -- -- -- 1,880 1,790 Bolivia -- -- 7,850 7

133

Delivery mechanisms of 3D geological models - a perspective from the British Geological Survey  

NASA Astrophysics Data System (ADS)

The past decade has seen the British Geological Survey (BGS) construct over one hundred 3D geological models using software such as GOCAD, GSI3D, EarthVision and Petrel across the United Kingdom and overseas. These models have been produced for different purposes and at different scales and resolutions in the shallow and deep subsurface. Alongside the construction of these models, the BGS and its collaborators have developed several options for disseminating these 3D geological models to external partners and the public. Initially, the standard formats for disseminating these 3D geological models by the BGS comprised of 2D images of cross-sections, GIS raster data and specialised visualisation software such as the LithoFrame Viewer. The LithoFrame Viewer is a thick-client software that allows the user to explore the 3D geometries of the geological units using a 3D interface, and generate synthetic cross-sections and boreholes on the fly. Despite the increased functionality of the LithoFrame Viewer over the other formats, the most popular data formats distributed remained 2D images of cross-sections, CAD based formats (e.g. DWG and DXF) and GIS raster data of surfaces and thicknesses, as these were the types of data that the external partners were most used too. Since 2009 software for delivering 3D geological models has advanced and types of data available have increased. Feature Manipulation Engine (FME) has been used to increase the number of outputs from 3D geological models. These include: 3D PDFs (Adobe Acrobat) KMZ/KML (GoogleEarth) 3D shapefiles (ESRI) Alongside these later outputs, the BGS has developed other software such as GroundhogTM and Geovisionary (in collaboration with Virtalis). Groundhog is fully a web based application that allows the user to generate synthetic cross-sections, boreholes and horizontal slices from 3D geological models on the fly. Geovisionary provides some of the most advanced visualisation of 3D geological models in the world with its ability to stream high resolution national and world scale datasets seamlessly. All of these tools have some technological and visualisation limitations and not one delivery mechanism is suitable for all. The idea from the BGS when it comes to model delivery mechanisms is to offer as many different 3D data formats and delivery options as possible to cover all user requirements. Most importantly, it is about giving the user what they want and engaging with them to encourage the use of the advanced functionality of some of this software so that a deeper understanding about the subsurface is gained. Sometimes this solution might be a high-tech solution via mobile devices, but at other times a print-out of a contour plot might be what is required. In the end it is the consumer that has to be satisfied with the product they are receiving.

Terrington, Ricky; Myers, Antony; Wood, Ben; Arora, Baneet

2013-04-01

134

Watersheds for U.S Geological Survey National Stream Quality Accounting Network (NASQAN) sampling sites 1996-2000  

USGS Publications Warehouse

A digital representation of the watersheds of 43 sites on large river systems sampled by the National Stream Quality Accounting Network (NASQAN) of the U. S. Geological Survey (USGS) in 2000 was created primarily from 1:250,000 hydrologic units(HUCs) in the United States. Watershed information from Canada and Mexico was incorporated to complete the areas draining to the sampling sites from outside the United States. The sampled rivers are in one of four major river systems: the Mississippi, the Colorado, the Rio Grande, or the Columbia.

2004-01-01

135

Water resources publications of the U.S. Geological Survey for Tennessee, 1987-1993  

USGS Publications Warehouse

This report presents an updated bibliography of water-resources related reports authored or co-authored by personnel of the U.S. Geological Survey, Water Resources Division, Tennessee District The bibliography lists 102 reports published by the U.S. Geological Survey during the period 1987 through 1993. Articles, papers, and abstracts published by non-U.S. Geological Survey sources for this same period also are listed. The report augments a previous bibliography for the years 1906-1987.

Baker, Eva G.; Oldson, Barbara B.

1994-01-01

136

National Geothermal Data System: State Geological Survey Contributions to Date  

NASA Astrophysics Data System (ADS)

In collaboration with the Association of American State Geologists the Arizona Geological Survey is leading the effort to bring legacy geothermal data to the U.S. Department of Energy's National Geothermal Data System (NGDS). NGDS is a national, sustainable, distributed, interoperable network of data and service (application) providers entering its final stages of development. Once completed the geothermal industry, the public, and policy makers will have access to consistent and reliable data, which in turn, reduces the amount of staff time devoted to finding, retrieving, integrating, and verifying information. With easier access to information, the high cost and risk of geothermal power projects (especially exploration drilling) is reduced. This presentation focuses on the scientific and data integration methodology as well as State Geological Survey contributions to date. The NGDS is built using the U.S. Geoscience Information Network (USGIN) data integration framework to promote interoperability across the Earth sciences community and with other emerging data integration and networking efforts. Core to the USGIN concept is that of data provenance; by allowing data providers to maintain and house their data. After concluding the second year of the project, we have nearly 800 datasets representing over 2 million data points from the state geological surveys. A new AASG specific search catalog based on popular internet search formats enables end users to more easily find and identify geothermal resources in a specific region. Sixteen states, including a consortium of Great Basin states, have initiated new field data collection for submission to the NGDS. The new field data includes data from at least 21 newly drilled thermal gradient holes in previously unexplored areas. Most of the datasets provided to the NGDS are being portrayed as Open Geospatial Consortium (OGC) Web Map Services (WMS) and Web Feature Services (WFS), meaning that the data is compatible with a variety of visualization software. Web services are ideal for the NGDS data for a number of reasons including that they preserve data ownership in that they are read only and new services can be deployed to meet new requirements without modifying existing applications.

Patten, K.; Allison, M. L.; Richard, S. M.; Clark, R.; Love, D.; Coleman, C.; Caudill, C.; Matti, J.; Musil, L.; Day, J.; Chen, G.

2012-12-01

137

The United States Geological Survey in Alaska; organization and status of programs in 1977  

USGS Publications Warehouse

United States Geological Survey projects in Alaska include a wide range of topics of economic and scientific interest. Studies in 1976 include economic geology, regional geology, stratigraphy, environmental geology, engineering geology, hydrology, and marine geology. Discussions of the findings or, in some instances, narratives of the course of the investigations are grouped in eight subdivisions corresponding to the six major onshore geographic regions, the offshore projects, and projects that are statewide in scope. Locations of the study areas are shown. In addition, many reports and maps covering various aspects of the geology and mineral and water resources of the State were published. These publications are listed. (Woodard-USGS)

Edited by Blean, Kathleen M.

1977-01-01

138

43 CFR 3836.14 - What other requirements must geological, geochemical, or geophysical surveys meet to qualify as...  

Code of Federal Regulations, 2011 CFR

...geological, geochemical, or geophysical surveys meet to qualify as assessment work...geological, geochemical, or geophysical surveys meet to qualify as assessment work? (a) Qualified experts must conduct the surveys and verify the results in a...

2011-10-01

139

Geotherm: the U.S. geological survey geothermal information system  

USGS Publications Warehouse

GEOTHERM is a comprehensive system of public databases and software used to store, locate, and evaluate information on the geology, geochemistry, and hydrology of geothermal systems. Three main databases address the general characteristics of geothermal wells and fields, and the chemical properties of geothermal fluids; the last database is currently the most active. System tasks are divided into four areas: (1) data acquisition and entry, involving data entry via word processors and magnetic tape; (2) quality assurance, including the criteria and standards handbook and front-end data-screening programs; (3) operation, involving database backups and information extraction; and (4) user assistance, preparation of such items as application programs, and a quarterly newsletter. The principal task of GEOTHERM is to provide information and research support for the conduct of national geothermal-resource assessments. The principal users of GEOTHERM are those involved with the Geothermal Research Program of the U.S. Geological Survey. Information in the system is available to the public on request. ?? 1983.

Bliss, J.D.; Rapport, A.

1983-01-01

140

Groundwater technical procedures of the U.S. Geological Survey  

USGS Publications Warehouse

A series of groundwater technical procedures documents (GWPDs) has been released by the U.S. Geological Survey, Water-Resources Discipline, for general use by the public. These technical procedures were written in response to the need for standardized technical procedures of many aspects of groundwater science, including site and measuring-point establishment, measurement of water levels, and measurement of well discharge. The techniques are described in the GWPDs in concise language and are accompanied by necessary figures and tables derived from cited manuals, reports, and other documents. Because a goal of this series of procedures is to remain current with the state of the science, and because procedures change over time, this report is released in an online format only. As new procedures are developed and released, they will be linked to this document.

Cunningham, William L.; Schalk, Charles W.

2011-01-01

141

A SURVEY OF THE URANIUM INDUSTRY IN CANADA  

Microsoft Academic Search

Canadian uranium production in 1957 and 1958, ore reserves, world ; production and reserves, mining and milling methods, costs, refining, uses, ; prices, and markets are discussed. Also included is a brief outime of thorium in ; Canada. (W.L.H.);

1959-01-01

142

3D geological property modelling at TNO - Geological Survey of the Netherlands  

NASA Astrophysics Data System (ADS)

The Geological Survey of the Netherlands (GSN) defines digital geological models as predictions of both geometry and properties of the subsurface. In contrast to singular observations in boreholes and the projected information of traditional maps, models provide continuous representations of the subsurface built with all geological expertise available. The GSN systematically produces 3D models of the upper 500 m of the Netherlands. To date, we build and maintain two different types of nation-wide models: (1) layer-based models in which the subsurface is represented as a series of tops and bases of geological or hydrogeological units, and (2) voxel models in which the subsurface is subdivided in a regular grid of voxels. The models are quantitative and user-oriented, i.e. they are applicable for non-geologists in their own area of expertise. They are also stochastic in nature, which implies that model uncertainty can be quantified. GeoTOP is the latest generation of Dutch subsurface models at TNO - Geological Survey of the Netherlands. GeoTOP schematises the shallow subsurface in millions of voxels of 100 by 100 by 0.5 m up to a depth of 30-50 m, which is the main zone of current subsurface activity. The model provides estimates of lithostratigraphy and lithology (including grain-size classes), as well as physical and chemical parameters, such as hydraulic conductivity and chemical element concentrations. Modelling is performed per province using all available digital borehole descriptions, components of the layer-based DGM model and a context of geological maps created during the last few decades (e.g. 1:50,000 map sheets and channel belt mapping). An important component of the GeoTOP model workflow is that all digital borehole descriptions are stratigraphically interpreted using automated procedures. These procedures deliver a set of uniformly and consistently interpreted boreholes that are used in the subsequent modelling stages. GeoTOP provides a base for answering subsurface-related questions about, amongst others, groundwater management and infrastructural issues. Current applications include: Modelling groundwater flow, using the architecture and sediment composition of glacially deformed sediments to assign hydraulic parameters. Modelling solute transport, using the distribution of lithology and sand grain-size classes to assign hydraulic parameters. Forecasting long-term (up to 200 y) land subsidence in the western part of the country, using the distribution of soft sediments (peat and clay) to model subsidence rates. Constructing risk maps for surface water-groundwater interaction in a river-deepening project, based on the architecture and sediment composition of fluvial channel belts. Our models are disseminated free-of-charge through the DINO web portal (www.dinoloket.nl) in a number of ways, including in an on-line map viewer with the option to create vertical cross-sections through the models, and as a series of downloadable GIS products. In co-operation with INSIGHT Geologische Softwaresysteme GmbH, the freely downloadable Subsurface Viewer was recently added to the portal, allowing users to download and visualise the layer-based models as well as GeoTOP on their desktop computers.

Maljers, Denise; Schokker, Jeroen; Stafleu, Jan; Gunnink, Jan L.

2013-04-01

143

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

in Portland, follows U.S. Interstate Highway 84 (1-84) east through the Columbia River gorge, ascends HoodU.S. Department of the Interior U.S. Geological Survey Geologic History of Mount Hood Volcano to geographicfeatures andfield-trip stops (diamonds). #12;GEOLOGIC HISTORY OF MOUNT HOOD VOLCANO, OREGON-A FIELD

144

The U.S. Geological Survey in Alaska; 1981 programs  

USGS Publications Warehouse

This Circular describes the 1981 programs and projects of the U.S. Geological Survey in Alaska. A brief description of the Alaskan operations of each office and division of the Survey is followed by project descriptions arranged by geographic regions in which the work takes place. The largest program at present is related to oil and gas exploration, but programs also include mineral appraisal, water-resource studies, volcanic and seismic programs, topographic mapping, glaciological and geohazard studies, and many other activities. Alaska is the largest and the least populated, least explored, and least developed of the Nation 's States. The land area contains 375 million acres and comprises 16 percent of the onshore land and more than half of the Outer Continental Shelf of the Nation. After Native and State of Alaska land selections of 44 million acres have been made, approximately 60 percent, 225 million acres, of Alaska land will remain under Federal jurisdiction. Federal lands in Alaska then will comprise approximately 30 percent of all onshore land in the Nation 's public domain. (USGS)

Reed, Katherine M., (Edited By); Gilmore, Robert F.; Harris, Linda-Lee; Tennison, Lisa D.

1981-01-01

145

Aerial surveys vs hunting statistics to monitor deer density: the example of Anticosti Island, Quebec, Canada  

E-print Network

Aerial surveys vs hunting statistics to monitor deer density: the example of Anticosti Island, Que., Co^te´, S.D., Gingras, A., Potvin, F. & Huot, J. 2007: Aerial surveys vs hunting statistics- tion densities are required. This is especially true on Anticosti Island, Que´bec, Canada, where sport

Laval, Université

146

Survey of Public Perceptions of Prion Disease Risks in Canada: What Does the Public Care About?  

Microsoft Academic Search

A national public survey on public perceptions of prion disease risk in Canada was conducted from October to December 2007. The survey aimed at documenting the public's perceptions of prion diseases, within the broader context of food safety, in establishing parameters of risk acceptability. It also documented the public's perceptions of prion diseases in delineating social values and ethics that

L. Lemyre; S. Gibson; M. P. L. Markon; J. E. C. Lee; I. Brazeau; A. Carroll; P. Boutette; D. Krewski

2009-01-01

147

U.S. Geological Survey New Hampshire-Vermont Water Science Center  

E-print Network

U.S. Geological Survey New Hampshire-Vermont Water Science Center Strategic Science Plan, 2007-2012 This Strategic Science Plan (henceforth the Science Plan) identifies water- resource related management problems, and to the Nation. The Science Plan will provide direction for the U.S. Geological Survey (USGS) New Hampshire

148

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

sustainability and higher pumping costs. The U.S. Geological Survey's (USGS) Groundwater Resources Program has of groundwater pumping on surface water was by the well-known USGS hydrologist C.V. Theis. In a paper publishedU.S. Department of the Interior U.S. Geological Survey Circular 1376 Groundwater Resources Program

149

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

to carry out its mission of describing and understanding the water re- sources of the Nation, it must have that are the backbone of the programs carried out across the Nation in the many district and field offices of the USGS in the NATIONAL RESEARCH PROGRAM #12;U.S. Geological Survey Circular 1195 The U.S. Geological Survey National

150

U.S. GEOLOGICAL SURVEY--MINERALS INFORMATION--1997 1 By James F. Carlin, Jr.  

E-print Network

U.S. GEOLOGICAL SURVEY--MINERALS INFORMATION--1997 1 TIN By James F. Carlin, Jr. In 1997, there was no domestic mine production of tin. Of the for tin were developed by the U.S. Geological Survey from a primary%), and Bolivia (7%). World tin reserves, estimated to be 8 million metric tons, were considered to be adequate

151

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

: U.S. Geological Survey Circular 1293, 21 p. Library of Congress Cataloging-in-Publication Data but is not limited to those who are involved in ground-water science. The report is intended to encourage U by U.S. Geological Survey and Department of the Interior management to formulate long-term ground

152

Activities and services of the U.S. Geological Survey, Denver area, Colorado  

USGS Publications Warehouse

This booklet is a summary of the activities and services of the United States Geological Survey, written for people who have visited or plan to visit one or more of its offices in the Denver area as well as to provide general information about the Geological Survey and its work. Sources of additional information are listed on pages 42-43.

U.S. Geological Survey

1969-01-01

153

In Bangladesh, approximately 3040 million people (British Geological Survey 2001) have  

E-print Network

In Bangladesh, approximately 30­40 million people (British Geological Survey 2001) have been; Schoolmeester and White 1980). In addition to elevated As concentrations in Bangladesh groundwater, the British Geological Survey (2001) has reported that many of the existing wells in Bangladesh also have man- ganese

van Geen, Alexander

154

The United States Geological Survey in Alaska; organization and status of programs in 1978  

USGS Publications Warehouse

United States Geological Survey projects in Alaska study a wide range of topics of economic and scientific interest. Work done in 1977 includes contributions to economic geology, regional geology, stratigraphy, engineering geology, hydrology, and marine geology. Many maps and reports covering various aspects of the geology and mineral and water resources of the State were published. In addition, the published 1:1,000,000-scale map of the State has been revised in two areas. A bibliography containing 263 reports on Alaska published in 1977 is included. (Woodard-USGS)

Edited by Johnson, Kathleen M.

1978-01-01

155

Stratigraphic nomenclature in reports of the U.S. Geological Survey  

USGS Publications Warehouse

The Geologic Names Committee of the United States Geological Survey was first organized on February 17, 1899, " ... to consider all names of geologic formations or other divisions of rock classifications with a view to determining whether they comply with the rules of nomenclature adopted for the Survey publications and to recommend such action as may be advisable in any individual case to secure unity of nomenclature under the rules."

Cohee, George V.

1974-01-01

156

Privatisation Of Education In Canada: A Survey Of Trends  

ERIC Educational Resources Information Center

The construct of "neo-liberalism" well defines privatisation within a global convergence of educational policy discourses and practices. This study analyses initiatives for and processes of privatisation in Canadian education from K--12 to post-secondary levels. In considering how privatisation is affecting public education systems in Canada, the

Davidson-Harden, Adam; Majhanovich, Suzanne

2004-01-01

157

Analysis of the U.S. geological survey streamgaging network  

USGS Publications Warehouse

This paper summarizes the results from the first 3 years of a 5-year cost-effectiveness study of the U.S. Geological Survey streamgaging network. The objective of the study is to define and document the most cost-effective means of furnishing streamflow information. In the first step of this study, data uses were identified for 3,493 continuous-record stations currently being operated in 32 States. In the second step, evaluation of alternative methods of providing streamflow information, flow-routing models, and regression models were developed for estimating daily flows at 251 stations of the 3,493 stations analyzed. In the third step of the analysis, relationships were developed between the accuracy of the streamflow records and the operating budget. The weighted standard error for all stations, with current operating procedures, was 19.9 percent. By altering field activities, as determined by the analyses, this could be reduced to 17.8 percent. The existing streamgaging networks in four Districts were further analyzed to determine the impacts that satellite telemetry would have on the cost effectiveness. Satellite telemetry was not found to be cost effective on the basis of hydrologic data collection alone, given present cost of equipment and operation.This paper summarizes the results from the first 3 years of a 5-year cost-effectiveness study of the U. S. Geological Survey streamgaging network. The objective of the study is to define and document the most cost-effective means of furnishing streamflow information. In the first step of this study, data uses were identified for 3,493 continuous-record stations currently being operated in 32 States. In the second step, evaluation of alternative methods of providing streamflow information, flow-routing models, and regression models were developed for estimating daily flows at 251 stations of the 3, 493 stations analyzed. In the third step of the analysis, relationships were developed between the accuracy of the streamflow records and the operating budget. The weighted standard error for all stations, with current operating procedures, was 19. 9 percent. By altering field activities, as determined by the analyses, this could be reduced to 17. 8 percent. Additional study results are discussed.

Scott, A.G.

1987-01-01

158

ECOSYSTEM-BASED MANAGEMENT IN CANADA: TRENDS FROM A NATIONAL SURVEY AND RELEVANCE TO PROTECTED AREAS  

Microsoft Academic Search

SUMMARY We conducted a nation-wide survey to assess the state of ecosystem-based management (EBM) in Canada. Detailed interviews were completed with at least 10 individuals in each region of Canada, representing government, industry, non-government environmental, and municipal agencies. Some significant results include: 1) EBM lacks explicit definitions in most jurisdictions; 2) explicit adoption of EBM terminology in policy and legislation

Michael S. Quinn; Jannette C. Theberge

159

Implementation of geographic-information-system technology for use in coal geology investigations at the Ohio Department of Natural Resources, Division of Geological Survey  

Microsoft Academic Search

Geographic information system technology is being used by the Ohio Division of Geological Survey to link project-specific databases to avoid unnecessary duplication of effort and equipment. Descriptive geologic data from measured sections, drill holes, and geochemical analyses are being computerized in cooperation with the U.S. Geological Survey National Coal Resource Data System. Line and area data, including coal croplines, surface

A. G. Axon; D. L. Crowell

1996-01-01

160

The West Virginia Geological and Economic Survey (WVGES)  

NSDL National Science Digital Library

This site includes materials on geology, coal and petroleum resources, industrial minerals, geologic hazards, ground water, topographic and geologic maps, education, and earth science. Teacher education materials include rock camps and telecourses. Special features include popular geology pages and frequently-asked-questions about geology and resources; updates about new museum specimens, flood and landslide information for homeowners, documents on mountaintop removal mining materials, and coal resource and mapping project information. Consultations, maps, publications, selected database items, and copies of documents are available at modest cost.

161

U.S. Department of the Interior January 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior January 2013 U.S. Geological Survey Mineral Industry Surveys For information, contact: Micheal W. George, Gold Commodity Specialist U.S. Geological Survey 989 National Center,100 455 44,700 2012: September 2 18,900 7,730 26,600 6,200 17 105 October: Bolivia -- 1,150 84 1,240 2

162

U.S. Department of the Interior June 2013 U.S. Geological Survey  

E-print Network

U.S. Department of the Interior June 2013 U.S. Geological Survey pa Mineral Industry Surveys For information, contact: James F. Carlin, Jr., Tin Commodity Specialist U.S. Geological Survey 989 National Bolivia 5,100 121 1,070 2,570 Brazil 2,930 51 416 843 China 174 489 59 548 Indonesia 6,180 395 777 1

163

Survey of bisphenol A in bottled water products in Canada  

Microsoft Academic Search

A method based on isotope dilution headspace solid-phase microextraction and gas chromatography\\/mass spectrometry was used to assess levels of bisphenol A (BPA) in 56 samples of bottled water products sold in Canada. Levels of BPA in samples of all 51 non-polycarbonate (PC) bottled water products were lower than the method detection limit (0.50 g l). Levels of BPA in most

Xu-Liang Cao; Jeannette Corriveau

2008-01-01

164

1-D/3-D geologic model of the Western Canada Sedimentary Basin  

USGS Publications Warehouse

The 3-D geologic model of the Western Canada Sedimentary Basin comprises 18 stacked intervals from the base of the Devonian Woodbend Group and age equivalent formations to ground surface; it includes an estimated thickness of eroded sediments based on 1-D burial history reconstructions for 33 wells across the study area. Each interval for the construction of the 3-D model was chosen on the basis of whether it is primarily composed of petroleum system elements of reservoir, hydrocarbon source, seal, overburden, or underburden strata, as well as the quality and areal distribution of well and other data. Preliminary results of the modeling support the following interpretations. Long-distance migration of hydrocarbons east of the Rocky Mountains is indicated by oil and gas accumulations in areas within which source rocks are thermally immature for oil and (or) gas. Petroleum systems in the basin are segmented by the northeast-trending Sweetgrass Arch; hydrocarbons west of the arch were from source rocks lying near or beneath the Rocky Mountains, whereas oil and gas east of the arch were sourced from the Williston Basin. Hydrocarbon generation and migration are primarily due to increased burial associated with the Laramide Orogeny. Hydrocarbon sources and migration were also influenced by the Lower Cretaceous sub-Mannville unconformity. In the Peace River Arch area of northern Alberta, Jurassic and older formations exhibit high-angle truncations against the unconformity. Potential Paleozoic though Mesozoic hydrocarbon source rocks are in contact with overlying Mannville Group reservoir facies. In contrast, in Saskatchewan and southern Alberta the contacts are parallel to sub-parallel, with the result that hydrocarbon source rocks are separated from the Mannville Group by seal-forming strata within the Jurassic. Vertical and lateral movement of hydrocarbons along the faults in the Rocky Mountains deformed belt probably also resulted in mixing of oil and gas from numerous source rocks in Alberta.

Higley, D. K.; Henry, M.; Roberts, L. N. R.; Steinshouer, D. W.

2005-01-01

165

New approach to geologic estimates of oil and gas resources by U. S. Geological Survey  

Microsoft Academic Search

Geologic interpretation and evaluation of potentially petroliferous areas provide the basis for oil and gas resource assessment. Geologic factors considered to be critical to the oil and gas resource appraisal methods used in this study include area, thickness, and age range of potential strata; character, volume, and age of producing and prospective reservoir beds; source beds, seals, and organic maturity;

G. L. Dolton; R. B. Powers; E. G. Sable

1976-01-01

166

Serologic Survey for Viral and Bacterial Infections in Western Populations of Canada Lynx (Lynx canadensis)  

Microsoft Academic Search

A serologic survey for exposure to pathogens in Canada lynx (Lynx canadensis )i n western North America was conducted. Sam- ples from 215 lynx from six study areas were tested for antibodies to feline parvovirus (FPV), feline coronavirus, canine distemper virus, fe- line calicivirus, feline herpesvirus, Yersinia pes- tis, and Francisella tularensis. A subset of sam- ples was tested for

Roman Biek; Randall L. Zarnke; Colin Gillin; Margaret Wild; John R. Squires; Mary Poss

2002-01-01

167

Ethnicity and citizenship attitudes in Canada: Analyses of a 1991 national survey  

Microsoft Academic Search

The purpose of this article was to examine the citizenship attitudes of Canadians, specifically as these attitudes may vary by ethnic origin. Citizenship attitudes were operationalized in terms of having a Canadian (as opposed to a provincial or ethnic) identity and having a positive attachment to Canada. Results from a national survey with 3325 respondents conducted in 1991 by Angus

Rudolf Kalin

1995-01-01

168

Privatisation Of Education In Canada: A Survey Of Trends  

NASA Astrophysics Data System (ADS)

The construct of `neo-liberalism' well defines privatisation within a global convergence of educational policy discourses and practices. This study analyses initiatives for and processes of privatisation in Canadian education from K-12 to post-secondary levels. In considering how privatisation is affecting public education systems in Canada, the authors focus on the commodification and marketisation of education. They also examine issues of equity and the viability of universally accessible and publicly funded education systems. Finally, the study highlights two main interrelated trends: the intrusion of market discourse into education at all levels on one hand and on the other a growing tension between contrasting conceptions of education as a tradable commodity and as a social right.

Davidson-Harden, Adam; Majhanovich, Suzanne

2004-07-01

169

U.S. Geological Survey Artificial Recharge Workshop Proceedings, April 2-4, 2002,  

E-print Network

Overview of Hydrologic Studies of Artificial Recharge in the U. S. Geological Survey by E.P. Weeks 5 by Jennifer Roberts Rogers 54 Fate And Transport of Bacterial, Viral, and Protozoan Pathogens During ASR

170

U.S. Geological Survey Near Real-Time Dst Index  

USGS Publications Warehouse

The operational version of the United States Geological Survey one-minute Dst index (a global geomagnetic disturbance-intensity index for scientific studies and definition of space-weather effects) uses either four- or three-station input (including Honolulu, Hawaii; San Juan, Puerto Rico; Hermanus, South Africa; and Kakioka, Japan; or Honolulu, San Juan and Guam) and a method based on the U.S. Geological Survey definitive Dst index, in which Dst is more rigorously calculated. The method uses a combination of time-domain techniques and frequency-space filtering to produce the disturbance time series at an individual observatory. The operational output is compared to the U.S. Geological Survey one-minute Dst index (definitive version) and to the Kyoto (Japan) Final Dst to show that the U.S. Geological Survey operational output matches both definitive indices well.

Gannon, J.L.; Love, J.J.; Friberg, P.A.; Stewart, D.C.; Lisowski, S.W.

2011-01-01

171

U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY  

E-print Network

U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY Sediment Distribution on a Stream........................................... 12 2. Sample sites offshore northernmost California................................................................................... 13 3. East-west distribution of nonopaque heavy minerals

172

Integrated analysis of remote sensing products from basic geological surveys. [Brazil  

NASA Technical Reports Server (NTRS)

Recent advances in remote sensing led to the development of several techniques to obtain image information. These techniques as effective tools in geological maping are analyzed. A strategy for optimizing the images in basic geological surveying is presented. It embraces as integrated analysis of spatial, spectral, and temporal data through photoptic (color additive viewer) and computer processing at different scales, allowing large areas survey in a fast, precise, and low cost manner.

Dasilvafagundesfilho, E. (principal investigator)

1984-01-01

173

Geological assessing of urban environments with a systematic mapping survey: The 1:5000 urban geological map of Catalonia  

NASA Astrophysics Data System (ADS)

The ground features of urban areas and the geologic processes that operate on them are, in general, strongly altered from their natural original condition as a result of anthropogenic activities. Assessing the stability of the ground, the flooding areas, and, the health risk as a consequence of soil pollution, are, among others, fundamental topics of urban areas that require a better understanding. The development of systematic urban geological mapping projects provides valuable resources to address these issues. Since 2007, the Institut Geologic de Catalunya (IGC) runs an urban geological mapping project, to provide accurate geologic information of county capitals and towns of more than 10000 inhabitants of Catalonia. The urban zones of 131 towns will be surveyed for this project, totalizing an area of about 2200 km2 to be mapped in 15 years. According to the 2008 census, the 82 % of the population of Catalonia (7.242.458 inhabitants) lives in the areas to be mapped in this project. The mapping project integrates in a GIS environment the following subjects: - Data from pre-existing geotechnical reports, historical geological and topographical maps and, from historical aerial photographs. - Data from available borehole databases. - Geological characterization of outcrops inside the urban network and neighbouring areas. - Geological, chemical and physical characterisation of representative rocks, sediments and soils. - Ortophotographs (0.5 m pixel size) and digital elevation models (5 meter grid size) made from historical aerial photographs, to depict land use changes, artificial deposits and geomorphological elements that are either hidden or destroyed by urban sprawl. - Detailed geological mapping of quaternary sediments, subsurface bedrock and artificial deposits. - Data from subsurface prospection in areas with insufficient or confuse data. - 3D modelling of the main geological surfaces such as the top of the pre-quaternary basement. All the gathered data is harmonised and stored it in a database. The analysis of the database allows to compile and print the 1:5000 scale urban geological map according to the 1:5000 topographic grid of Catalonia. The map is composed by a principal map, geologic cross sections and several complementary maps, charts and tables. Regardless of the geological map units, the principal map also includes the main artificial deposits (such as infilled river valleys and road embankments), very recent or current superficial deposits, contours of outcropping areas, structural data and other relevant information gathered in stations, sampling points, boreholes indicating the thickness of artificial deposits and the depth of the pre-quaternary basement, contour lines of the top of the pre-quaternary basement surface and, water level data. The complementary maps and charts may change depending on the gathered data, the geological features of the area and the urban typology. However, the most representative complementary maps that includes the printed urban map are the quaternary subsurface bedrock map and the isopach map of thickness of quaternary and anthropogenic deposits. The map also includes charts and tables of relevant physical and chemical parameters of the geological materials, harmonised downhole lithological columns from selected boreholes, and, photographs and figures illustrating the geology of the mapped area and how urbanisation has changed the natural environment. The object of this systematic urban mapping survey is to provide a robust database to be used in targeted studies related to urban planning, geoengineering works, soil pollution and other important environmental issues that society should deal in the future.

Vil, Miquel; Pi, Roser; Cirs, Jordi; de Paz, Ana; Berstegui, Xavier

2010-05-01

174

Beowulf Distributed Processing and the United States Geological Survey  

USGS Publications Warehouse

Introduction In recent years, the United States Geological Survey's (USGS) National Mapping Discipline (NMD) has expanded its scientific and research activities. Work is being conducted in areas such as emergency response research, scientific visualization, urban prediction, and other simulation activities. Custom-produced digital data have become essential for these types of activities. High-resolution, remotely sensed datasets are also seeing increased use. Unfortunately, the NMD is also finding that it lacks the resources required to perform some of these activities. Many of these projects require large amounts of computer processing resources. Complex urban-prediction simulations, for example, involve large amounts of processor-intensive calculations on large amounts of input data. This project was undertaken to learn and understand the concepts of distributed processing. Experience was needed in developing these types of applications. The idea was that this type of technology could significantly aid the needs of the NMD scientific and research programs. Porting a numerically intensive application currently being used by an NMD science program to run in a distributed fashion would demonstrate the usefulness of this technology. There are several benefits that this type of technology can bring to the USGS's research programs. Projects can be performed that were previously impossible due to a lack of computing resources. Other projects can be performed on a larger scale than previously possible. For example, distributed processing can enable urban dynamics research to perform simulations on larger areas without making huge sacrifices in resolution. The processing can also be done in a more reasonable amount of time than with traditional single-threaded methods (a scaled version of Chester County, Pennsylvania, took about fifty days to finish its first calibration phase with a single-threaded program). This paper has several goals regarding distributed processing technology. It will describe the benefits of the technology. Real data about a distributed application will be presented as an example of the benefits that this technology can bring to USGS scientific programs. Finally, some of the issues with distributed processing that relate to USGS work will be discussed.

Maddox, Brian G.

2002-01-01

175

A survey of hospital pharmacy research in Canada.  

PubMed

During the past two years, the CSHP Research Committee was given the tasks of evaluating the present status of hospital pharmacy research and developing positive recommendations for future action. In order to determine the specific needs and interests of Canadian hospital pharmacists, a survey of the CSHP membership was conducted in April of 1987. Two hundred and twenty-two members (13.1%) responded to the survey. Fifty-six percent (124) of the respondents had completed one or more research projects and 30 percent (66) served as supervisors of at least one research study. Clinical drug studies, particularly DUR and pharmacokinetic projects, were the focus of most of the present research efforts. In addition to DUR and pharmacokinetics, the most popular "wish to do" research topics included pharmaceutics, cost benefit/analysis and other pharmacy practice research topics. The survey respondents indicated a strong desire for CSHP to sponsor research similar to the Workload Measurement Study. The Canadian Society of Hospital Pharmacists was also requested to provide educational programs and other methods of information dissemination for training in the field of research methodology. PMID:10290644

Steeves, R; Blackburn, J

1988-10-01

176

U.S. Geological Survey Open-File Report 02328 Geological Survey of Canada Open File 4350  

E-print Network

2002 THE CASCADIA SUBDUCTION ZONE AND RELATED SUBDUCTION SYSTEMS Seismic Structure, Intraslab;#12;The Cascadia Subduction Zone and Related Subduction Systems-- Seismic Structure, Intraslab Earthquakes;The Cascadia Subduction Zone and Related Subduction Systems | iii Preface The following report

Goldfinger, Chris

177

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

of Remote-Sensing Information-- Application to Agricultural Production and Maintaining Groundwater Quality-Sensing Information--Application to Agricultural Production and Maintaining Groundwater Quality By William M. Forney Survey Marcia K. McNutt, Director U.S. Geological Survey, Reston, Virginia: 2012 For an overview of USGS

Fleskes, Joe

178

NASA Earth Resources Survey Symposium. Volume 1-B: Geology, Information Systems and Services  

NASA Technical Reports Server (NTRS)

A symposium was conducted on the practical applications of earth resources survey technology including utilization and results of data from programs involving LANDSAT, the Skylab earth resources experiment package, and aircraft. Topics discussed include geological structure, landform surveys, energy and extractive resources, and information systems and services.

1975-01-01

179

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

In partnership with the NAWQA Program, we collected a significant amount of groundwater-quality data that neither Munday, U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program Groundwater Studies: Principal Aquifer Surveys The NAWQA Program In 1991, the U.S. Congress established the National Water

Torgersen, Christian

180

DEPARTMENT OF THE INTERIOR U. S. GEOLOGICAL SURVEY  

E-print Network

COUNTIES, VIRGINIA BY L. SCOTT EATON, B.A. MORGAN, AND J. L. BLAIR OPEN-FILE REPORT 01-92 2001 This report, AND PAGE COUNTIES, VIRGINIA L. Scott Eaton, Benjamin A. Morgan, and J. Luke Blair INTRODUCTION The surficial geology of the upper Rapidan River basin and adjacent areas in Madison and Greene Counties

Eaton, L. Scott

181

Magnetic survey of topsoils in Windsor Essex County, Canada  

NASA Astrophysics Data System (ADS)

Windsor-Essex County is a major cross-border truck and transportation route, with significant localized industrialization as well as rural and farming areas. Magnetic property measurements (in-field and laboratory susceptibility, frequency-dependent susceptibility, hysteresis properties, thermomagnetic and thermosusceptibility curves, anhysteretic and isothermal magnetizations) were made in order to determine the potential for using such variables to distinguish between natural and anthropogenic pollutants. In-field magnetic susceptibility measured on 324 soil sampling sites on a 0.5-2 km grid spacing through Windsor-Essex County ranged from 3.7 10 - 6 to 305.2 10 - 6 SI (average 36.2 35.8 10 - 6 SI), and showed that high magnetic susceptibility values were obtained on soil sampling sites in and around the cities/towns of Windsor, Harrow, Olinda and Oakland and near the beaches of Point Pelee National Park (PPNP) and Deerbrook, whereas lower susceptibility values were observed in near the towns of Lakeshore and Essex. On this grid spacing, Highway 401 (the major truck route) did not show anomalous susceptibility values; however, closer (1-3 m) sampling on other roads did show anomalously high values, suggesting that the coarser grid spacing may have missed anomalies. Laboratory measurements indicated that the dominant magnetic mineral in the Windsor-Essex County soils is magnetite; however, the grain size is variable. Pseudo-single domain (PSD)-multidomain (MD) magnetite is generally found on beaches and in PPNP, whereas single domain (SD)-PSD magnetite has been found near the City of Windsor and other towns. While certain correlations exist between some anthropogenic activities and the measured magnetic susceptibility and magnetic property values, no overall correlation can be made. A variety of geologic and anthropogenic factors must be considered when interpreting the origin of the magnetic signal in a particular area.

Shi, Ruiping; Cioppa, Maria T.

2006-12-01

182

The Educational Attainment of Second Generation Immigrants in Canada: Analysis based on the General Social Survey  

Microsoft Academic Search

Using data from the 2001 General Social Survey, this study focused on differences in educational attainment between the children of immigrants to Canada, referred to as second-generation immigrants, and similarly-aged children of Canadian-born parents. Two definitions of second-generation immigrants were introduced. The first considered a Canadian resident with at least one immigrant parent to be a second-generation immigrant, while the

Miroslav Kucera

2008-01-01

183

Risk factors for hypertension as measured by the Canada Health Survey.  

PubMed

This paper examines the association between hypertension and demographic, genetic, personal, and socio-economic risk factors. Logistic regression models were fitted to data from the 1978-79 Canada Health Survey. The analysis showed that age, sex, genetic history, and body mass index were important factors in predicting high blood pressure. For males, blood cholesterol and exercise were other contributing factors; for females, hypertension also had significant associations with marital status, geographical region, and economic family income. PMID:8011962

Tomiak, M; Gentleman, J F

1993-01-01

184

The geology of kimberlite pipes of the Ekati property, Northwest Territories, Canada  

Microsoft Academic Search

This paper reviews key characteristics of kimberlites on the Ekati property, NWT, Canada. To date 150 kimberlites have been discovered on the property, five of which are mined for diamonds. The kimberlites intrude Archean basement of the central Slave craton. Numerous Proterozoic diabase dykes intrude the area. The Precambrian rocks are overlain by Quaternary glacial sediments. No Phanerozoic rocks are

Tom Nowicki; Barbara Crawford; Darren Dyck; Jon Carlson; Ross McElroy; Peter Oshust; Herb Helmstaedt

2004-01-01

185

Integration of 3D geological modeling and gravity surveys for geothermal prospection in an Alpine region  

NASA Astrophysics Data System (ADS)

Thermal sources are common manifestations of geothermal energy resources in Alpine regions. The up-flow of the fluid is well-known to be often linked to cross-cutting fault zones providing a significant volume of fractures. Since conventional exploration methods are challenging in such areas of high topography and complicated logistics, 3D geological modeling based on structural investigation becomes a useful tool for assessing the overall geology of the investigated sites. Geological modeling alone is, however, less effective if not integrated with deep subsurface investigations that could provide a first order information on geological boundaries and an imaging of geological structures. With this aim, in the present paper the combined use of 3D geological modeling and gravity surveys for geothermal prospection of a hydrothermal area in the western Alps was carried out on two sites located in the Argentera Massif (NW Italy). The geothermal activity of the area is revealed by thermal anomalies with surface evidences, such as hot springs, at temperatures up to 70 C. Integration of gravity measurements and 3D modeling investigates the potential of this approach in the context of geothermal exploration in Alpine regions where a very complex geological and structural setting is expected. The approach used in the present work is based on the comparison between the observed gravity and the gravity effect of the 3D geological models, in order to enhance local effects related to the geothermal system. It is shown that a correct integration of 3D modeling and detailed geophysical survey could allow a better characterization of geological structures involved in geothermal fluids circulation. Particularly, gravity inversions have successfully delineated the continuity in depth of low density structures, such as faults and fractured bands observed at the surface, and have been of great help in improving the overall geological model.

Guglielmetti, L.; Comina, C.; Abdelfettah, Y.; Schill, E.; Mandrone, G.

2013-11-01

186

U.S. Geological Survey: Science in Your State  

NSDL National Science Digital Library

This portal provides access to a variety of scientific reference materials for the 50 states and some territories in the U.S. For each state, there is a section of real-time data that includes current stream flow conditions, drought and flood watches, ground water data, and current natural hazards information. A facts section provides basic geographic and demographic information such as land area, highest and lowest points, population, capital, and others. There is also a selection of links to maps and tools, and additional information on each state's geology, ecology, natural resources, and natural hazards.

187

Quaternary geologic map of the Ottawa 4 degrees x 6 degrees quadrangle, United States and Canada  

USGS Publications Warehouse

The Quaternary Geologic Map of the Ottawa 4 degree x 6 degree Quadrangle was mapped as part of the Quaternary Geologic Atlas of the United States. The atlas was begun as an effort to depict the areal distribution of surficial geologic deposits and other materials that accumulated or formed during the past 2+ million years, the period that includes all activities of the human species. These materials are at the surface of the earth. They make up the 'ground' on which we walk, the 'dirt' in which we dig foundations, and the 'soil' in which we grow crops. Most of our human activity is related in one way or another to these surface materials that are referred to collectively by many geologists as regolith, the mantle of fragmental and generally unconsolidated material that overlies the bedrock foundation of the continent. The maps were compiled at 1:1,000,000 scale.

Fullerton, David S.; Gadd, N. R., (compiler); Veillette, J.J.; Wagner, P.W.; Chapman, W.F.

1993-01-01

188

Quaternary geologic map of the Boston 4 degrees x 6 degrees quadrangle, United States and Canada  

USGS Publications Warehouse

The Quaternary Geologic Map of the Boston 4 deg x 6 deg Quadrangle was mapped as part of the Quaternary Geologic Atlas of the United States. The atlas was begun as an effort to depict the areal distribution of surficial geologic deposits and other materials that accumulated or formed during the past 2+ million years, the period that includes all activities of the human species. These materials are at the surface of the earth. They make up the 'ground' on which we walk, the 'dirt' in which we dig foundations, and the 'soil' in which we grow crops. Most of our human activity is related in one way or another to these surface materials that are referred to collectively by many geologists as regolith, the mantle of fragmental and generally unconsolidated material that overlies the bedrock foundation of the continent. The maps were compiled at 1:1,000,000 scale.

State compilations by Hartshorn, Joseph H.; Thompson, W. B.; Chapman, W. F.; Black, R. F.; Richmond, Gerald Martin; Grant, D. R.; Fullerton, David S.; edited and integrated by Richmond, Gerald Martin; Fullerton, David S.

1991-01-01

189

Support by the U.S. Geological Survey for adjudications, compacts, and treaties  

USGS Publications Warehouse

The U.S. Geological Survey supports interstate compacts, treaties, and court decrees by providing hydrologic data and analysis needed in their administration and by providing Federal representation on compact commissions. As part of this program, in fiscal year 1982 the Geological Survey operated 171 streamflow stations, 3 sediment stations, and 13 water-quality stations, and conducted ground-water studies at a cost of $1,014,000. Funding for Federal representation to i0 interstate compacts is presently budgeted at $56,000.

Condes de la Torre, Alberto

1982-01-01

190

Mapping surficial geology and assessment of permafrost conditions under the Iqaluit airport, Nunavut, Canada  

NASA Astrophysics Data System (ADS)

Formerly, characterization of permafrost conditions was minimal before the construction of infrastructures. It was assumed that the permafrost would forever remain a solid substrate. Before global warming, transportation infrastructures were not designed, especially in terms of materials and dimensions, to withstand without damage an increased input of heat in the soil. Iqaluit airport, the hub of the eastern Canadian Arctic, is currently affected by thawing permafrost. In fact, the runway, taxiways and apron are affected by differential settlements resulting from the presence of localized ice-rich soils. This study uses a GIS approach that makes up for the absence of appropriate characterization before the construction of the airport during WWII and in the 1950s. Mapping of surficial geology, hydrography and landforms indicative of the presence of ground ice (e.g. tundra polygons) was produced by interpreting aerial photographs dating back from the initial phases of construction (1948) and photographs taken at intervals since then, to the most recent high-resolution satellite images. Subsequent map analysis shows that the original terrain conditions prevailing before the construction of the airport have a significant impact on the current stability of the infrastructure. Data integration allowed us to summarize the main problems affecting the Iqaluit airport which are: 1) Differential settlements associated with pre-construction drainage network 2) Cracking due to thermal contraction, 3) Linear depressions associated with ice wedge degradation and 4) Sink holes. Most of the sectors affected by differential settlements and instabilities are perfectly coincident with the original streams and lakes network that has been filled to increase the size of the runway, taxiways and the apron. In addition, the runway is affected by intense frost cracking. Similarities with nearby natural terrain suggest that the network pattern of the cracks follows pre-existing ice wedges in the natural terrain. Analysis of ground penetrating radar profiles indeed shows parabolic reflectors typical of ice wedges under the larger runway cracks. Temperature data acquired with five thermistor cables in the runway, in a taxiway, in the apron and in nearby natural terrain shows that the thickness of the active layer varies between 90 centimeters for sectors covered with vegetation and more than 2 meters below paved surfaces which means that the thaw depth has now reached down into the original natural terrain under the infrastructure, thus causing settlements due to melting ice wedges. Sink holes are mostly localised on the edges of the northern part of the runway. Processes responsible for these holes possibly are seepage of water into the base course and the subgrade, melting of bodies of ice or soil compaction problems. This established context of permafrost is now used for planning a detailed investigation program in preparation for the restoration of the airport and its adaptation to climate change. The program will include drilling, more geophysical surveys, thermal monitoring and numerical simulations.

Mathon-Dufour, V.; Allard, M.; Leblanc, A.; L'Hrault, E.; Oldenborger, G. A.; Sladen, W. E.

2012-12-01

191

U. S. GEOLOGICAL SURVEY'S NATIONAL REAL-TIME HYDROLOGIC INFORMATION SYSTEM USING GOES SATELLITE TECHNOLOGY.  

USGS Publications Warehouse

The U. S. Geological Survey maintains the basic hydrologic data collection system for the United States. The Survey is upgrading the collection system with electronic communications technologies that acquire, telemeter, process, and disseminate hydrologic data in near real-time. These technologies include satellite communications via the Geostationary Operational Environmental Satellite, Data Collection Platforms in operation at over 1400 Survey gaging stations, Direct-Readout Ground Stations at nine Survey District Offices and a network of powerful minicomputers that allows data to be processed and disseminate quickly.

Shope, William G., Jr.

1987-01-01

192

Quaternary geology and geomorphology of the Dinosaur Provincial Park area and surrounding plains, Alberta, Canada: the identification of former glacial lobes, drainage diversions and meltwater flood tracks  

Microsoft Academic Search

The Quaternary geology and geomorphology of the lower Red Deer River drainage basin, centred on the Dinosaur Provincial Park badlands, provides information on pre-Late Wisconsinan drainage patterns and the dynamics of former lobes of the Laurentide Ice Sheet in western Canada. Patterns of deglaciation, proglacial lake evolution and spillway incision are also reconstructed based upon the distribution of surface materials

David J. A Evans

2000-01-01

193

Summary of the geologic mapping program by the Division of Geological and Geophysical Surveys (DGGS) in McGrath Quadrangle, Alaska  

Microsoft Academic Search

From 1977-84, DGGS completed 1:63,360-scale geologic mapping of the McGrath quadrangle in western Alaska. Rock units in the study area range in age from lower Paleozoic to recent. The geologic history of this region has integrated stratigraphy, igneous activity, and mineral resources. The DGGS efforts have resulted in the release of eight geologic maps and an extensive geochemistry survey of

T. K. Bundtzen; W. G. Gilbert; J. T. Kline; D. N. Solie

1985-01-01

194

The role of the U.S. Geological Survey in the lithium industry  

USGS Publications Warehouse

The U.S. Geological Survey has responsibility in the U.S. Department of the Interior to assess the nation's energy and mineral resources. The evaluation of reserves and resources of a commodity such as lithium should be a continuing process in the light of advancing technology and ever-growing knowledge of its geologic occurrence and geochemical behavior. Although reserves of lithium vary with market demand because of the investment required to find, develop, and appraise an ore body, total resources are a function of the geologic occurrence and geochemical behavior of lithium. By studying known deposits and publishing data on their origin and occurrence, the U.S. Geological Survey can aid in the discovery of new deposits and improve the resource base. Resource data are used both by the government and the private sector. Government funding for research on energy-related technologies such as electric vehicle batteries and fusion power requires assurance that there will be enough lithium available in time for commercialization. Questions of availability for all mineral commodities must be answered by the U.S. Geological Survey so that intelligent decisions can be made. ?? 1978.

Vine, J.D.

1978-01-01

195

Survey of nine surface mines in North America. [Nine different mines in USA and Canada  

SciTech Connect

This report presents the information gathered by three mining engineers in a 1980 survey of nine surface mines in the United States and Canada. The mines visited included seven coal mines, one copper mine, and one tar sands mine selected as representative of present state of the art in open pit, strip, and terrace pit mining. The purpose of the survey was to investigate mining methods, equipment requirements, operating costs, reclamation procedures and costs, and other aspects of current surface mining practices in order to acquire basic data for a study comparing conventional and terrace pit mining methods, particularly in deeper overburdens. The survey was conducted as part of a project under DOE Contract No. DE-AC01-79ET10023 titled The Development of Optimal Terrace Pit Coal Mining Systems.

Hayes, L.G.; Brackett, R.D.; Floyd, F.D.

1981-01-01

196

U.S. GEOLOGICAL SURVEY--MINERALS INFORMATION--1996 1 RARE EARTHS  

E-print Network

U.S. GEOLOGICAL SURVEY--MINERALS INFORMATION--1996 1 RARE EARTHS By James B. Hedrick The rare on that range in crustal abundance from cerium, the 25th most September 23, 1996. All stocks of rare earths contained 455 metric tons (501 short per million. The rare earths were discovered in 1787 by tons

197

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

. Nelson (U.S. Geological Survey, Golden, CO) and C. Wayne Wright (National Aeronautics and Space detection and ranging (LiDAR), is an innovative mapping technology that precisely measures the time it takes with an onboard global positioning system (GPS) and inertial measurement unit (IMU) to map the elevation

198

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

blocks and other containers of low-level radioactive waste were dumped on the continental shelf and slopeU.S. Department of the Interior U.S. Geological Survey Detection of Barrels that contain Low-level Radioactive Waste in Farallon Island Radioactive Waste Dumpsite Using Side-scan Sonar and Underwater

199

U.S. Geological Survey Aids Federal Agencies in ObtainingCommercial Satellite and Aerial Imagery  

USGS Publications Warehouse

The U.S. Geological Survey (USGS) is a leading U.S. Federal civil agency in the implementation of the civil aspects of the Commercial Remote Sensing Space Policy (CRSSP). The USGS is responsible for collecting inter-agency near-term requirements, establishing an operational infrastructure, and supporting the policy and other Federal agencies.

Geological Survey (U.S.)

2005-01-01

200

U.S. Department of Interior U.S. Geological Survey  

E-print Network

U.S. Department of Interior U.S. Geological Survey Benthic Flux of Dissolved Nickel into the Water-89 #12;Benthic Flux of Dissolved Nickel into the Water Column of South San Francisco Bay By Brent R;Benthic Flux of Dissolved Nickel into the Water Column of South San Francisco Bay by Brent R

201

U.S. Department of Interior U.S. Geological Survey  

E-print Network

. Krabbenhoft, Water Resources Investigations Report 02-4138 and Mae S. Gustin #12;Flux of Dissolved Forms ------------------------------------------------------------ 20 3 #12;Flux of Dissolved Forms of Mercury Across the Sediment-water Interface in Lahontan ReservoirU.S. Department of Interior U.S. Geological Survey Flux of Dissolved Forms of Mercury Across

202

US Geological Survey Core Science Metadata Clearinghouse PRINCIPAL INVESTIGATOR: Giriprakash Palanisamy  

E-print Network

important research in natural resources, much of which relates to climate change science. With over 98--important factors to accurate climate change research. NOTABLE ACHIEVEMENTS USGS Core Science Metadata ClearinghouseUS Geological Survey Core Science Metadata Clearinghouse PRINCIPAL INVESTIGATOR: Giriprakash

203

Estimated Use of Water in the United States in 1975. Geological Survey Circular 765.  

ERIC Educational Resources Information Center

The United States Geological Survey has compiled data on water use in this country every fifth year since 1950. This document is the most recent of this series and presents data on water withdrawn for use in the United States in 1975. In the introduction, recent and present water use studies are discussed along with a description of the

Murray, C. Richard; Reeves, E. Bodette

204

EVALUATION OF THE U.S. GEOLOGICAL SURVEY LABORATORY, ATLANTA, GEORGIA  

EPA Science Inventory

An on-site evaluation was made of the capabilities of the U.S. Geological Survey Laboratory at Atlanta, Georgia. Particular emphasis was placed on determining their ability to meet the monitoring requirements connected with their contractual efforts with the U.S. Environmental Pr...

205

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

the report and to the computer program. Users can check for updates on the Internet at http://water.usgs.gov/software/lists/groundwaterU.S. Department of the Interior U.S. Geological Survey Techniques and Methods 3­B9 Groundwater By Paul M. Barlow and Allen F. Moench Groundwater Resources Program Techniques and Methods 3­B9 U

206

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

was developed by the U.S. Geological Survey (USGS) in cooperation with the Middle Pecos Groundwater Conservation in cooperation with the Middle Pecos Groundwater Conservation District, Pecos County, City of Fort Stockton Model for the Hydrogeologic Framework, Geochemistry, and Groundwater-Flow System of the Edwards

207

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

in this report was supported by the U.S. Geological Survey (USGS) Groundwater Resources Program. The authors�5047 Groundwater Resources Program Hydrogeologic Framework of the Uppermost Principal Aquifer Systems, Gary D. LeCain, Derek W. Ryter, Roy Sando, and Andrew J. Long Groundwater Resources Program Scientific

208

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

U.S. Department of the Interior U.S. Geological Survey A Product of the Groundwater Resources Locally Refined Grids Chapter 34 of Book 6, Modeling Techniques, Section A, Groundwater Parent segment 1 2 Locally Refined Grids By Steffen W. Mehl and Mary C. Hill A Product of the Groundwater Resources Program

209

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

systematic ways. Assessing Potential Ground-Water Supplies To assist water-resources man- agement in areasU.S. Department of the Interior U.S. Geological Survey November 2008 Ground Water About half the Nation and nearly all the rural population obtain drinking water from ground-water sources. As develop

210

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

U.S. Department of the Interior U.S. Geological Survey China's Rare-Earth Industry By Pui-Kwan Tse on the USGS--the Federal source for science about the Earth, its natural and living resources, natural hazards information products, visit http://store.usgs.gov Suggested citation: Tse, Pui-Kwan, 2011, China's rare-earth

Torgersen, Christian

211

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

U.S. Geological Survey, Reston, Virginia 2013 For product and ordering information: World Wide Web, and the environment: World Wide Web: http://www.usgs.gov Telephone: 1-888-ASK-USGS Suggested citation: Wood, N (Science Application for Risk Reduction) Tsunami Scenario Stephanie Ross and Lucile Jones, Editors

212

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

Oil and Gas Commission, Duke University, Faulkner County, Shirley Community Development Corporation-production facility in the Fayetteville Shale area, north-central Arkansas. Bottom, Freshwater pond and distribution Corporation, and the University of Arkansas at Fayetteville, and the U.S. Geological Survey Groundwater

Jackson, Robert B.

213

EVALUATION OF THE U.S. GEOLOGICAL SURVEY LABORATORY, DENVER, COLORADO  

EPA Science Inventory

An onsite evaluation was made of the capabilities of the U.S. Geological Survey Laboratory at Denver, Colorado. Particular emphasis was placed on determining their ability to meet the monitoring requirements connected with their contractual efforts with the U.S. Environmental Pro...

214

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

and depressions that nearly intersect the water table near the western edge of the dune field. The interdunalU.S. Department of the Interior U.S. Geological Survey Fact Sheet 2004­3051 July 2004 Ground-Water generally is the same as the rate of sand transport southwestward by water; together, the two mechanisms

215

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

. To date, beach-specific predictive models have been developed for Huntington and Edge- water beachesU.S. Department of the Interior U.S. Geological Survey November 2008 Water Quality and Ecology THE OHIO WATER MICROBIOLOGY LABORATORY The USGS Ohio Water Microbiol- ogy Laboratory (OWML) is a state

216

Overview of the Water, Energy, Biogeochemical Budgets Program of the U.S. Geological Survey  

Microsoft Academic Search

Small watershed studies serve as an important mechanism to understand changes in a broad range of hydrologic environments at a scale where multiple processes can be understood. The U. S. Geological Survey's (USGS) Water, Energy, and Biogeochemical Budgets (WEBB) program was designed to understand processes in small watersheds located in geographically diverse environments that represent a range of hydrologic, ecologic,

Mary Jo Baedecker

217

Operation of U.S. Geological Survey unmanned digital magnetic observatories  

Microsoft Academic Search

The precision and continuity of data recorded by unmanned digital magnetic observatories depend on the type of data acquisition equipment used and operating procedures employed. Three generations of observatory systems used by the U.S. Geological Survey are described. A table listing the frequency of component failures in the current observatory system has been compiled for a 54-month period of operation.

Lanny R. Wilson

1990-01-01

218

Information and informatics in a geological survey - the good, the bad and the ugly  

Microsoft Academic Search

It is apparent that the most successful geological surveys (as measured by the only true Key Performance Indicator - their effectiveness in serving their societies) have recognised that, while their core business is making maps and models and doing scientific research to underpin that, the commodity they actually deal in is data and information and knowledge. They know that in

I. Jackson

2008-01-01

219

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

restless calderas. When an eruption does break out in the Long Valley area, its impact will depend Valley area indicates that future eruptions will occur. Geologists studying the Long Valley Caldera have U.S. GEOLOGICAL SURVEY--REDUCING THE RISK FROM VOLCANO HAZARDS L GUS S ong Valley Caldera

Torgersen, Christian

220

List of current and planned projects of the trace elements program, U.S. Geological Survey  

USGS Publications Warehouse

This summary lists the Geological Survey's current and future investigations of uranium and other elements of related interest. The titles of the investigations are grouped under the headings listed in the table of contents. Entries in each category are listed alphabetically, according to author or project leader, and numbered consecutively.

Vickers, Rollin C., (compiler)

1951-01-01

221

he U.S. Geological Survey's (USGS) National Water-Quality Assess-  

E-print Network

T he U.S. Geological Survey's (USGS) National Water-Quality Assess- ment (NAWQA) Program collected not contain any VOCs, this assessment is a first step in better under- standing the state of water quality of the wells (Figure 2). 32/ March 2003 Water Well Journal water quality/ NGWA.org Volatile Organic Compounds

222

UNITED STATES STREAMFLOW DATA FROM US GEOLOGICAL SURVEY STREAM-GAGING STATIONS  

EPA Science Inventory

The U.S. Geological Survey (USGS) stream-gaging program provides streamflow data for a variety of purposes that range from current needs, such as flood forecasting, to future or long-term needs, such as detection of changes in streamflow due to human activities or global warming....

223

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

enacted by Congress in 1977, the U.S. Geological Survey (USGS) has responsibility for the Federal effort, and � Assessing building safety immedi- ately following a damaging quake. Although progress has been limited depicts the distribution, by county, of estimated long-term average annual earthquake losses as a fraction

224

U.S. Department of the Interior September 2013 U.S. Geological Survey  

E-print Network

materials and was expected to begin producing zinc in the fourth quarter of 2013 and lead-silver concentrate For information, contact: Amy C. Tolcin, Zinc Commodity Specialist U.S. Geological Survey 989 National Center://minerals.usgs.gov/minerals ZINC IN JUNE 2013 Domestic mine production (recoverable) of zinc in June 2013 was 61,000 metric tons (t

225

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

Water Quality Assessment (NAWQA) Program, developed by the U.S. Geological Survey (USGS-management practices. Information collected and interpreted as part of NAWQA will add to the scientific basis for water-management decisions and policy formulation (Leahy and others, 1990). The NAWQA Program is organized into 59 study

226

Maps published of Antarctica by the U.S. Geological Survey  

USGS Publications Warehouse

The Geological Survey in cooperation with the National Science Foundation prepares and publishes topographic maps of selected areas of Antarctica needed to support the U.S. Antarctic Research Program (USARP) efforts. These maps are prepared from aerial photography flown by U.S. Navy Air Development Squadron Six (VXE-6) in accordance with USGS specifications.

1977-01-01

227

Map prepared by U.S. Geological Survey National Earthquake Information Center  

E-print Network

Map prepared by U.S. Geological Survey National Earthquake Information Center 14 January 2010 Version 3 Map not approved for release by Director USGS EARTHQUAKE SUMMARY MAPU.S. DEPARTMENT (unpublished earthquake catalog) (Engdahl, 2003) Global Seismic Hazard Assessment Program PLATE TECTONICS

Abbott Jr., Richard N.

228

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

of Luzon in the Philippines, shaking and squeezing the Earth's crust beneath the vol- cano. At MountCataclysmic1991EruptionofMountPinatubo,Philippines U.S. GEOLOGICAL SURVEY--REDUCING THE RISK FROM VOLCANO HAZARDS out to form a lava dome but did not cause an explosive eruption. However, on June 12 (Philippine

Torgersen, Christian

229

The British Geological Survey's Lexicon of Named Rock Units as Online and Linked Data  

NASA Astrophysics Data System (ADS)

The British Geological Survey's Lexicon of Named Rock Units provides freely accessible definitions and supplementary information about geological units of Great Britain, Northern Ireland, and their associated continental shelf. It is an online database that can be searched at www.bgs.ac.uk/Lexicon/. It has existed since 1990 (under different names) but the database and user interface have recently been completely redesigned to improve their semantic capabilities and suitability for describing different styles of geology. The data are also now freely available as linked data from data.bgs.ac.uk/. The Lexicon of Named Rock Units serves two purposes. First, it is a dictionary, defining and constraining the geological units that are referenced in the Survey's data sets, workflows, products and services. These can include printed and digital geological maps at a variety of scales, reports, books and memoirs, and 3- and 4-dimensional geological models. All geological units referenced in any of these must first be present and defined, at least to a basic level of completeness, in the Lexicon database. Only then do they become available for use. The second purpose of the Lexicon is as a repository of knowledge about the geology of the UK and its continental shelf, providing authoritative descriptions written and checked by BGS geoscientists. Geological units are assigned to one of four themes: bedrock, superficial, mass movement and artificial. They are further assigned to one of nine classes: lithostratigraphical, lithodemic intrusive, lithodemic tectono-metamorphic, lithodemic mixed, litho-morpho-genetic, man-made, age-based, composite, and miscellaneous. The combination of theme and class controls the fields that are available to describe each geological unit, so that appropriate fields are offered for each, whether it is a Precambrian tectono-metamorphic complex, a Devonian sandstone formation, or a Devensian river terrace deposit. Information that may be recorded about each unit includes its rank, parentage, previous and alternative names and usage, geochronological age, lithology, environment of deposition / mode of origin, thickness, boundaries, type and reference localities and sections, geographical distribution, associated landforms, and literature references. BGS geoscientists use a web-based 'sandbox' system to write and revise definitions. The Lexicon currently stores information on approximately 13,400 geological units that BGS considers to be 'current', with cross references to some 6,000 other names that are considered to be obsolete or alternative names. The entries span the entire preserved geological history of the UK from Archaean to Recent, onshore and offshore.

McCormick, T.

2012-12-01

230

37 NEW T-TYPE BROWN DWARFS IN THE CANADA-FRANCE BROWN DWARFS SURVEY  

SciTech Connect

The Canada-France Brown Dwarfs Survey is an i'- and z'-band survey realized with MegaCam at the Canada-France-Hawaii Telescope that covers a surface area of 780 deg{sup 2}. Image analysis is now completed while J-band follow-up campaigns are {approx}90% done. The survey identified about 70 T dwarf candidates, of which 43 now have near-infrared spectra obtained with NIRI and GNIRS at Gemini and ISAAC at the Very Large Telescope. Six of these were previously published and we present here the 37 new discoveries, all T dwarfs. They range from T0 to T8.5 with four being of type T7 or later. Both newly identified T8 dwarfs are possibly high log (g) massive brown dwarfs of thin disk age. One T4.5 dwarf shows signs of sub-metallicity. We present proper motions and near-infrared photometry, and discuss about the most peculiar/interesting objects in some details.

Albert, Loic [Canada-France-Hawaii Telescope Corporation, 65-1238 Mamalahoa Highway, Kamuela, HI 96743 (United States); Artigau, Etienne [Departement de physique and Observatoire du mont Megantic, Universite de Montreal, C.P. 6128, Succursale Centre-Ville, Montreal, QC, H3C 3J7 (Canada); Delorme, Philippe [School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS (United Kingdom); Reyle, Celine [Observatoire de Besancon, Universite de Franche-Comte, Institut Utinam, UMR CNRS 6213, BP1615, 25010 Besan con Cedex (France); Forveille, Thierry; Delfosse, Xavier [UJF-Grenoble 1/CNRS-INSU, Institut de Planetologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble, F-38041 (France); Willott, Chris J., E-mail: albert@cfht.hawaii.edu [Herzberg Institute of Astrophysics, National Research Council, 5071 West Saanich Road, Victoria, BC V9E 2E7 (Canada)

2011-06-15

231

AFFILIATIONS: MCCABE AND HAY--U.S. Geological Survey, Denver, Colorado; CLARK--National Institute for Water and  

E-print Network

AFFILIATIONS: MCCABE AND HAY--U.S. Geological Survey, Denver, Colorado; CLARK--National Institute.S. Geological Survey, Denver Federal Center, 412, Denver, CO 80225 E-mail: gmccabe@usgs.gov The abstract form 7 September 2006 ©2007 American Meteorological Society Severity of rain on snow depends

232

U.S.Geological Survey Grant No. 01HQGR0018 EARTHQUAKE POTENTIAL OF MAJOR FAULTS OFFSHORE SOUTHERN CALIFORNIA  

E-print Network

U.S.Geological Survey Grant No. 01HQGR0018 EARTHQUAKE POTENTIAL OF MAJOR FAULTS OFFSHORE SOUTHERN;U.S.Geological Survey Grant No. 01HQGR0018 EARTHQUAKE POTENTIAL OF MAJOR FAULTS OFFSHORE SOUTHERN Major active faults offshore southern California are poorly known with respect to slip-rates and seismic

Goldfinger, Chris

233

Patrick G. R. Jodice U.S. Geological Survey South Carolina Cooperative Fish and Wildlife Research Unit  

E-print Network

Patrick G. R. Jodice U.S. Geological Survey South Carolina Cooperative Fish and Wildlife Research-June 2004), U.S. Geological Survey, South Carolina Cooperative Fish and Wildlife Research Unit, Clemson and Wildlife Service, Portland, Oregon 1999-2001: Post-doctoral Research Associate, Oregon Cooperative Fish

Jodice, Patrick

234

Engineering geology of a mudslide at Bracebridge Inlet, Bathurst Island, Northwest Territories, Canada  

E-print Network

this transportation mechanism and the resultant snowpack formed on the lee side of the anticline. The snowpack begins melting in the short summertime, supplying large quantities of water to the slope. Data from the snowline survey indicates that the snow line... this transportation mechanism and the resultant snowpack formed on the lee side of the anticline. The snowpack begins melting in the short summertime, supplying large quantities of water to the slope. Data from the snowline survey indicates that the snow line...

Mayer, Terry Ann

2012-06-07

235

Summary of the geologic mapping program by the Division of Geological and Geophysical Surveys (DGGS) in McGrath Quadrangle, Alaska  

SciTech Connect

From 1977-84, DGGS completed 1:63,360-scale geologic mapping of the McGrath quadrangle in western Alaska. Rock units in the study area range in age from lower Paleozoic to recent. The geologic history of this region has integrated stratigraphy, igneous activity, and mineral resources. The DGGS efforts have resulted in the release of eight geologic maps and an extensive geochemistry survey of the entire quadrangle. A comprehensive summary of the geology and mineral resources of the entire quadrangle is in process. The poster session will also summarize university graduate studies of mineral deposits, igneous petrology, and stratigraphy.

Bundtzen, T.K.; Gilbert, W.G.; Kline, J.T.; Solie, D.N.

1985-04-01

236

Airborne magnetic survey for geological purposes in the USSR and Russian Federation  

NASA Astrophysics Data System (ADS)

In 1991 it was 55 years since the application of airborne magnetic surveys on USSR territory, and 52 years since its practical usage at geological institutes. It is possible to outline three periods of such a survey. (1) 1936-55. In this period the magnetic field vertical component was measured with the use of an induction magnetometer developed by A.A. Logachev. The main features of this simple instrument is a half-ring collector, a type of suspension, a compensation mode of measuring with a semi-automatic analog recording, and so forth, and a special system of tuning enabling one to receive a root mean square error of the survey in the range of 50-200 nT. With the use of this magnetometer, the territory of 2,000,000 km2 was surveyed, a number of deposits were discovered ( Krasnokamensk iron-ore deposit in South Siberia in 1943 included), geological maps were refined, and in the period of 1948-49 the first survey in the Arctic (for geological zonation) was conducted.

Glebovsky, Yu. S.; Mishin, Alexey A.

1993-11-01

237

Magnetic HGI, radiometric surveys prove cost-effective in W. Canada  

SciTech Connect

The Rumsey Leduc reef (Late Devonian) in Central Alberta is an after-the-fact case history that illustrates the congruence of horizontal gradient intensity and seismic anomalies. The Rumsey reef is situated on the Feen-Big Valley Shoal near Stettler, Alberta. The geology of that shoal was described by Andrichuk. Andrichuk observed that at least 30 m of secondary dolomites indicative of subsequent Leduc reef formation can be seen underlying the Erskine, Stettler, Fenn, and Big Valley Leduc reef fields on the shoal. They further suggested that because this dolomitic trend extends about 7 miles southwest of Big Valley field, that area to the southwest may well contain productive reef buildups as yet undiscovered (in 1958). The Rumsey reef, discovered in that are in 1982, is the most significant new productive Leduc build-up discovered on the shoal since 1958. Subsequent to the Rumsey discovery, Gulf conducted a 3D seismic survey to determine the full extent of the reef. In 1994 Gulf participated in a joint project with the author to share and make public the 3D survey in exchange for the author`s HGI and DRAD survey of the same area. Gulf provided the 3D survey only after the author presented his survey results. The paper discusses results from these surveys as well as survey costs.

LeSchack, L.A. [Topaz Energy Exploration Ltd., Calgary, Alberta (Canada)

1997-05-26

238

Geochemical Variability and Process Recognition from Soils in the Maritime Provinces, Canada  

Microsoft Academic Search

A soil geochemical survey was undertaken in the maritime provinces of Canada. The survey was designed to reveal the variability of the near surface geochemistry that is associated with underlying bedrock geology, effects of weathering, meteoric water infiltration, groundwater and anthropogenic activities. Soil samples collected from the O, A, B and C horizons from the Maritime Provinces of Canada were

E. C. Grunsky

2009-01-01

239

CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey - imaging data and catalogue products  

NASA Astrophysics Data System (ADS)

We present data products from the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS). CFHTLenS is based on the Wide component of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS). It encompasses 154 deg2 of deep, optical, high-quality, sub-arcsecond imaging data in the five optical filters u*g'r'i'z'. The scientific aims of the CFHTLenS team are weak gravitational lensing studies supported by photometric redshift estimates for the galaxies. This paper presents our data processing of the complete CFHTLenS data set. We were able to obtain a data set with very good image quality and high-quality astrometric and photometric calibration. Our external astrometric accuracy is between 60 and 70 mas with respect to Sloan Digital Sky Survey (SDSS) data, and the internal alignment in all filters is around 30 mas. Our average photometric calibration shows a dispersion of the order of 0.01-0.03 mag for g'r'i'z' and about 0.04 mag for u* with respect to SDSS sources down to iSDSS ? 21. We demonstrate in accompanying papers that our data meet necessary requirements to fully exploit the survey for weak gravitational lensing analyses in connection with photometric redshift studies. In the spirit of the CFHTLS, all our data products are released to the astronomical community via the Canadian Astronomy Data Centre at http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/community/CFHTLens/query.html. We give a description and how-to manuals of the public products which include image pixel data, source catalogues with photometric redshift estimates and all relevant quantities to perform weak lensing studies.

Erben, T.; Hildebrandt, H.; Miller, L.; van Waerbeke, L.; Heymans, C.; Hoekstra, H.; Kitching, T. D.; Mellier, Y.; Benjamin, J.; Blake, C.; Bonnett, C.; Cordes, O.; Coupon, J.; Fu, L.; Gavazzi, R.; Gillis, B.; Grocutt, E.; Gwyn, S. D. J.; Holhjem, K.; Hudson, M. J.; Kilbinger, M.; Kuijken, K.; Milkeraitis, M.; Rowe, B. T. P.; Schrabback, T.; Semboloni, E.; Simon, P.; Smit, M.; Toader, O.; Vafaei, S.; van Uitert, E.; Velander, M.

2013-08-01

240

CFHTLenS: The Canada-France-Hawaii Telescope Lensing Survey - Imaging Data and Catalogue Products  

E-print Network

We present data products from the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS). CFHTLenS is based on the Wide component of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS). It encompasses 154 deg^2 of deep, optical, high-quality, sub-arcsecond imaging data in the five optical filters u^*g'r'i'z'. The article presents our data processing of the complete CFHTLenS data set. We were able to obtain a data set with very good image quality and high-quality astrometric and photometric calibration. Our external astrometric accuracy is between 60-70 mas with respect to SDSS data and the internal alignment in all filters is around 30 mas. Our average photometric calibration shows a dispersion on the order of 0.01 to 0.03 mag for g'r'i'z' and about 0.04 mag for u^* with respect to SDSS sources down to i <= 21. In the spirit of the CFHTLS all our data products are released to the astronomical community via the Canadian Astronomy Data Centre. We give a description and how-to manuals of the public pr...

Erben, T; Miller, L; van Waerbeke, L; Heymans, C; Hoekstra, H; Kitching, T D; Mellier, Y; Benjamin, J; Blake, C; Bonnett, C; Cordes, O; Coupon, J; Fu, L; Gavazzi, R; Gillis, B; Grocutt, E; Gwyn, S D J; Holhjem, K; Hudson, M J; Kilbinger, M; Kuijken, K; Milkeraitis, M; Rowe, B T P; Schrabback, T; Semboloni, E; Simon, P; Smit, M; Toader, O; Vafaei, S; van Uitert, E; Velander, M

2012-01-01

241

US GEOLOGICAL SURVEY'S NATIONAL SYSTEM FOR PROCESSING AND DISTRIBUTION OF NEAR REAL-TIME HYDROLOGICAL DATA.  

USGS Publications Warehouse

The US Geological Survey is utilizing a national network of more than 1000 satellite data-collection stations, four satellite-relay direct-readout ground stations, and more than 50 computers linked together in a private telecommunications network to acquire, process, and distribute hydrological data in near real-time. The four Survey offices operating a satellite direct-readout ground station provide near real-time hydrological data to computers located in other Survey offices through the Survey's Distributed Information System. The computerized distribution system permits automated data processing and distribution to be carried out in a timely manner under the control and operation of the Survey office responsible for the data-collection stations and for the dissemination of hydrological information to the water-data users.

Shope, Jr. , William, G.

1987-01-01

242

Natural Resources Canada: Earth Sciences  

NSDL National Science Digital Library

The Natural Resources Canada agency has created a wonderful set of resources for curious visitors seeking to learn more about the earth sciences. The agency's formal scientific research work involves divisions such as the Canada Centre for Remote Sensing, the Geodetic Survey Division, the Geological Survey of Canada, and the National Air Photo Library. On the homepage, visitors can use the Earth Sciences Resources area to find data, maps, and tools for their own research or personal edification. The site's primary materials are divided into sections that include Climate Change, Energy and Minerals, Geography and Boundaries, Groundwater, and Natural Hazards. The Geography and Boundaries area is a real find, as it provides access to the impressive Atlas of Canada, which includes 393 interactive maps and over 1,000 referenced and archived maps on all aspects of Canadian geography. Visitors should check out the Products and Services area to learn more about the maps and image services offered here.

2011-04-03

243

The Geology, Geochemistry and Alteration of the Westwood Au-Zn-Cu Deposit, Abitibi Subprovince, Canada  

NASA Astrophysics Data System (ADS)

The Westwood Au-Zn-Cu deposit, one of the latest major discoveries made in the Abitibi Subprovince, is hosted by the Bousquet Formation of the Archean Blake River Group, Abitibi Subprovince. The Bousquet Formation forms a south-facing, steeply dipping homoclinal volcanic sequence. Three mineralized corridors from the north to the south have been defined to date: 1) the Zone 2 Extension Corridor, 2) the North Corridor, and 3) the Westwood-Warrenmac Corridor. The Zone 2 Extension consists of auriferous quartz and sulphide veins. The North Corridor mineralization consists of various amounts of auriferous disseminated pyrite and sulphide veins. The Westwood-Warrenmac Corridor comprises semi-massive to massive sulphide lenses on a specific stratigraphic horizon. The Westwood deposit is interpreted, on a preliminary basis, to represent the transition between syngenetic vein systems (Zone 2 Extension) and subseafloor (North Corridor) and seafloor volcanogenic massive sulphide-style gold-rich mineralization (Westwood-Warrenmac). Careful inspection of drill core cross-cutting the mineralized sequence, and detailed geochemical analysis show that deposit-scale geology is dominated by coherent to volcaniclastic mafic to intermediate and tholeiitic to transitional flows towards the north (Bousquet Formation lower member), and by coherent and volcaniclastic intermediate to felsic, and transitional to calc-alkaline flows in the southern portion (Bousquet Formation upper member). The Zone 2 Extension ore zones occur in the lower Bousquet Formation and are hosted by mafic to intermediate units. The North Corridor ore zones are hosted by basalt and andesite. The Westwood-Warrenmac ore zone occurs most often in rhyodacitic to rhyolitic rocks of the upper Bousquet Formation. Depletion in Na, Ca, Mg, and Mn occur approaching peak metal and gold concentration, whereas enrichment in Fe is observed. This correlates to the increased concentration of sulphide minerals associated with the ore zones. There is relatively little change in Si, although an apparent enrichment may be present in some intervals. These major element trends reflect the abundances of alteration minerals such as garnet, biotite, chlorite, and sericite. The Westwood study contributes to better geological and geochemical exploration models for gold-rich VMS systems in Archean greenstone belts.

Wright-Holfeld, A.; Mercier-Langevin, P.; Dub, B.

2009-05-01

244

West Virginia Geological Survey's role in siting fluidized bed combustion facilities  

USGS Publications Warehouse

A project is presented which demonstrates the role of geology in planning and siting a fluidized bed combustion facility. Whenever a project includes natural resource utilization, cooperation between geologists and design engineers will provide an input that could and should save costs, similar to the one stated in our initial premise. Regardless of whether cost reductions stem from a better knowledge of fuel and sorbent availabilities, or a better understanding of the local hydrology, susceptibility to mine-subsidence, or other geologic hazards, the geological survey has a vital role in planning. Input to planning could help the fluidized-bed developer and design-engineer solve some economic questions and stretch the financial resources at their disposal.

Smith, C.J.; King, H.M.; Ashton, K.C.; Kirstein, D.S.; McColloch, G.H.

1989-01-01

245

The geology and emplacement history of the Pigeon kimberlite, EKATI Diamond Mine, Northwest Territories, Canada  

NASA Astrophysics Data System (ADS)

The Pigeon kimberlite is located approximately 6 km to the northwest of the Koala cluster of the EKATI Diamond Mine, and is presently one of ten kimberlite occurrences in the EKATI resource development plan. It was emplaced along a regional lithological contact between syn-Yellowknife Supergroup granitoid rocks and Yellowknife Supergroup metasedimentary rocks that were covered by a now eroded veneer of poorly consolidated muddy sediments. Detailed age dating has not been undertaken, however the emplacement age is inferred from sedimentary xenoliths present within the pipe to range between 45-75 Ma. Pigeon is a small kimberlite body, estimated to be approximately 3.5 ha at surface, consisting of a steep-sided pipe that can be separated into four main geological domains that are characterized by contrasting textures, different diamond characteristics and unique mineral abundance and compositional signatures. The uppermost portion of the body consists of mud-rich resedimented volcaniclastic kimberlite that was formed by the deposition of extra crater deposits by debris flow type processes into an open diatreme. Texturally complex kimberlite is present within the lower portion of the kimberlite and includes rocks that display a range of features consistent with coherent (magmatic) and less common volcaniclastic (fragmental) rocks. This texturally complex zone is interpreted to represent a clastogenic deposit formed by a low energy eruption within an open diatreme.

Crawford, Barbara; Hetman, Casey; Nowicki, Tom; Baumgartner, Mike; Harrison, Sara

2009-11-01

246

THE CANADA-FRANCE-HAWAII TELESCOPE LEGACY SURVEY: STACKED IMAGES AND CATALOGS  

SciTech Connect

This paper describes the image stacks and catalogs of the Canada-France-Hawaii Telescope Legacy Survey produced using the MegaPipe data pipeline at the Canadian Astronomy Data Centre. The Legacy Survey is divided into two parts. The Deep Survey consists of four fields each of 1 deg{sup 2}, with magnitude limits (50% completeness for point sources) of u = 27.5, g = 27.9, r = 27.7, i = 27.4, and z = 26.2. It contains 1.6 Multiplication-Sign 10{sup 6} sources. The Wide Survey consists of 150 deg{sup 2} split over four fields, with magnitude limits of u = 26.0, g = 26.5, r = 25.9, i = 25.7, and z = 24.6. It contains 3 Multiplication-Sign 10{sup 7} sources. This paper describes the calibration, image stacking, and catalog generation process. The images and catalogs are available on the web through several interfaces: normal image and text file catalog downloads, a 'Google Sky' interface, an image cutout service, and a catalog database query service.

Gwyn, Stephen D. J., E-mail: Stephen.Gwyn@nrc-cnrc.gc.ca [Canadian Astronomy Data Centre, Herzberg Institute of Astrophysics, 5071 West Saanich Road, Victoria, British Columbia, V9E 2E7 (Canada)

2012-02-15

247

The Energy Lands Program of the U.S. Geological Survey, fiscal year 1976  

USGS Publications Warehouse

The Energy Lands Program of the U.S. Geological Survey comprises several projects that conduct basic and interpretive earth-science investigations into the environmental aspects of energy-resource recovery, transmission, and conversion. More than half the coal reserves of the United States occur west of the Mississippi River; therefore, the program concentrates mostly on coal-producing regions in the Western interior. Additional studies involve the oil-shale region in Colorado, Wyoming, and Utah, and coal-related work in Alaska and Appalachia. The work is done both by USGS personnel and under USGS grants and contracts through the Energy Lands Program to universities, State Geological Surveys, and private individuals. Maps and reports characterizing many aspects of environmental earth science are being prepared for areas of Alaska, Montana, North Dakota, Wyoming, Utah, Colorado, New Mexico, Arizona, Oklahoma, Kansas, and Texas. Types of studies underway include bedrock, surficial, and interpretive geology; engineering geology, geochemistry of surface materials and plants; climatic conditions as they influence rehabilitation potential of mined lands; and feasibility of surface vs. underground mining. The purpose common to all investigations in the Energy Lands Program is to provide timely earth-science information for use by managers, policy-makers, engineers, scientists, planners, and others, in order to contribute to an environmentally sound, orderly, and safe development of the energy resources of the Nation.

Compiled by Maberry, John O.

1978-01-01

248

U.S. Geological Survey (USGS) Western Region: Alaska Coastal and Ocean Science  

USGS Publications Warehouse

The U.S. Geological Survey (USGS), a bureau of the Department of the Interior (DOI), is the Nation's largest water, earth, and biological science and mapping agency. The bureau's science strategy 'Facing Tomorrow's Challenges - U.S. Geological Survey Science in the Decade 2007-2017' describes the USGS vision for its science in six integrated areas of societal concern: Understanding Ecosystems and Predicting Ecosystem Change; Climate Variability and Change; Energy and Minerals; Hazards, Risk, and Resilience; Environment and Wildlife in Human Health; and Water Census of the United States. USGS has three Regions that encompass nine geographic Areas. This fact sheet describes examples of USGS science conducted in coastal, nearshore terrestrial, and ocean environments in the Alaska Area.

Holland-Bartels, Leslie

2009-01-01

249

Health-Based Screening Levels to Evaluate U.S. Geological Survey Ground water Quality Data  

Microsoft Academic Search

Federal and state drinking-water standards and guidelines do not exist for many contaminants analyzed by the U.S. Geological Survey's National Water-Quality Assessment Program, limiting the ability to evaluate the potential human-health relevance of water-quality findings. Health-based screening levels (HBSLs) were developed collaboratively to supplement existing drinking-water standards and guidelines as part of a six-year, multi-agency pilot study. The pilot study

Patricia L. Toccalino; Julia E. Norman

2006-01-01

250

Identification codes for organizations listed in computerized data systems of the U.S. Geological Survey  

USGS Publications Warehouse

Codes for the unique identification of public and private organizations listed in computerized data systems are presented. These codes are used by the U.S. Geological Survey 's National Water Data Exchange (NAWDEX), National Water Data Storage and Retrieval System (WATSTORE), National Cartographic Information Center (NCIC), and Office of Water Data Coordination (OWDC). The format structure of the codes is discussed and instructions are given for requesting new books. (Author 's abstract)

Blackwell, C.D.

1988-01-01

251

Identification codes for organizations listed in computerized data systems of the U.S. Geological Survey  

USGS Publications Warehouse

This report contains codes for the identification of public and private organizations listed in computerized data systems. These codes are used by the U.S. Geological Survey 's National Water Data Exchange (NAWDEX), National Water Data Storage and Retrieval System (WATSTORE), and National Cartographic Information Center (NCIC). The format structure of the codes is discussed and instructions are given for requesting new codes. (Woodard-USGS)

Edwards, Melvin D.; Drilleau, Margery O.

1976-01-01

252

Identification codes for organizations listed in computerized data systems of the U.S. Geological Survey  

USGS Publications Warehouse

This report contains codes for the identification of public and private organizations listed in computerized data systems. These codes are used by the U.S. Geological Survey 's National Water Data Exchange (NAWDEX), National Water Data Storage and Retrieval System (WATSTORE), National Cartographic Information Center (NCIC), and Office of Water Data Coordination (OWDC). The format structure of the codes is discussed and instructions are given for requesting new codes. (USGS)

Edwards, Melvin D.; Myers, Beverly M.

1981-01-01

253

Identification codes for organizations listed in computerized data systems of the U.S. Geological Survey  

USGS Publications Warehouse

This report contains codes for the identification of public and private organizations listed in computerized data systems. These codes are used by the U.S. Geological Survey 's National Water Data Exchange (NAWDEX), National Water Data Storage and Retrieval System (WATSTORE), National Cartographic Information Center (NCIC), and Office of Water Data Coordination (OWDC). The format structure of the codes is discussed and instructions are given for requesting new codes. (Woodard-USGS)

Edwards, Melvin D.; Myers, Beverly M.

1979-01-01

254

Identification codes for organizations listed in computerized data systems of the U.S. Geological Survey  

USGS Publications Warehouse

This report contains codes for the identification of public and private organizations listed in computerized data systems. These codes are used by the U.S. Geological Survey 's National Water Data Exchange (NAWDEX), National Water Data Storage and Retrieval System (WATSTORE), National Cartographic Information Center (NCIC), Office of Water Data Coordination (OWDC). The format structure of the codes is discussed and instructions are given for requesting new codes. (USGS)

Edwards, Melvin D.; Josefson, Beverly M.

1982-01-01

255

Identification codes for organizations listed in computerized data systems of the U.S. Geological Survey  

USGS Publications Warehouse

This report contains codes for the identification of public and private organizations listed in computerized data systems. These codes are used by the U.S. Geological Survey 's National Water Data Exchange (NAWDEX), National Water Data Storage and Retrieval System (WATSTORE), National Cartographic Information Center (NCIC), and Office of Water Data Coordination (OWDC). The format structure of the codes is discussed and instructions are given for requesting new codes. (Woodard-USGS)

Edwards, Melvin D.; Drilleau, Margery O.

1978-01-01

256

U.S. Geological Survey Menlo Park campus; self-guided tour  

USGS Publications Warehouse

The U.S. Geological Survey (USGS), established by an act of Congress in 1879, is the Nation's largest natural science and civilian mapping agency. The USGS works in cooperation with more than 2,000 organizations across the country to provide reliable, impartial scientific information. This information is used to minimize the loss of life and property from natural disasters, safeguard the Nation's natural resources, and enhance quality of life through careful monitoring of water, biological, energy, and mineral resources.

Colvard, Elizabeth M.; Tongue, Mara G.; Gordon, Leslie C.

2007-01-01

257

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

(see References Cited section) and data stored in the U.S. Geological Survey's National Water from Smoot, 1988; Nyman, 1989) 300 to 499 500 to 699 700 to 899 900 to 1,199 Line of section (see fig-Area Conic projection North American Datum of 1983 10 KILOMETERS 0 0 2 4 6 8 2 4 6 8 10 MILES TEXAS ARKANSAS

Torgersen, Christian

258

Past, present, and future of water data delivery from the U.S. Geological Survey  

USGS Publications Warehouse

We present an overview of national water databases managed by the U.S. Geological Survey, including surface-water, groundwater, water-quality, and water-use data. These are readily accessible to users through web interfaces and data services. Multiple perspectives of data are provided, including search and retrieval of real-time data and historical data, on-demand current conditions and alert services, data compilations, spatial representations, analytical products, and availability of data across multiple agencies.

Hirsch, Robert M.; Fisher, Gary T.

2014-01-01

259

Cost Effectiveness of the US Geological Survey's Stream-gaging Program in New York  

Microsoft Academic Search

The U.S. Geological Survey conducted a 5-year nationwide analysis to define and document the most cost effective means of obtaining streamflow data. This report describes the stream gaging network in New York and documents the cost effectiveness of its operation; it also identifies data uses and funding sources for the 174 continuous-record stream gages currently operated (1983). Those gages as

Stephen W. Wolcott; William B. Gannon; William H. Johnston

1986-01-01

260

Hf isotope compositions of U.S. Geological Survey reference materials  

Microsoft Academic Search

A systematic multi-isotopic and trace element characterization of U.S. Geological Survey reference materials has been carried out at the Pacific Centre for Isotopic and Geochemical Research, University of British Columbia. Values of 176Hf\\/177Hf are recommended for the following reference materials (mean 2 SD): G-2: 0.282523 6; G-3: 0.282518 1; GSP-2: 0.281949 8; RGM-1: 0.283017 13; STM-1:

Dominique Weis; Bruno Kieffer; Diane Hanano; Ins Nobre Silva; Jane Barling; Wilma Pretorius; Claude Maerschalk; Nadine Mattielli

2007-01-01

261

Hf isotope compositions of U.S. Geological Survey reference materials  

Microsoft Academic Search

A systematic multi-isotopic and trace element characterization of U.S. Geological Survey reference materials has been carried out at the Pacific Centre for Isotopic and Geochemical Research, University of British Columbia. Values of 176Hf\\/177Hf are recommended for the following reference materials (mean +\\/-2 SD): G-2: 0.282523 +\\/- 6; G-3: 0.282518 +\\/- 1; GSP-2: 0.281949 +\\/- 8; RGM-1: 0.283017 +\\/- 13; STM-1:

Dominique Weis; Bruno Kieffer; Diane Hanano; Ins Nobre Silva; Jane Barling; Wilma Pretorius; Claude Maerschalk; Nadine Mattielli

2007-01-01

262

Compilation of field methods used in geochemical prospecting by the U.S. Geological Survey  

USGS Publications Warehouse

The field methods described in this report are those currently used in geochemical prospecting by the U. S. Geological Survey. Some have been published, others are being processed for publication, while others are still being investigated. The purpose in compiling these methods is to make them readily available in convenient form. The methods have not been thoroughly tested and none is wholly satisfactory. Research is being continued.

Lakin, Hubert William; Ward, Frederick Norville; Almond, Hy

1952-01-01

263

White House Proposes 4% Increase to U.S. Geological Survey Budget  

NASA Astrophysics Data System (ADS)

Although funding for the U.S. Geological Survey (USGS) pales compared with that for NASA, the U.S. National Science Foundation, and other U.S. federal science agencies, the overall percent increase for USGS for fiscal year (FY) 2015 would be bigger than for those other agencies if Congress goes along with the budget that the White House proposed on 4 March.

Showstack, Randy

2014-04-01

264

Towards the Automated Map Factory: Early Automation at the U.S. Geological Survey  

Microsoft Academic Search

This paper is concerned with changes in map work at the U.S. Geological Survey during the period from 1950 to 1974. At the start of this period, mapmaking at USGS was dominated by manual techniques organized to conform to twentieth-century advances in photogrammetry, drafting techniques, materials, and industrial organization. During the 1950s and 1960s, technologies that had been developed in

Patrick H. McHaffie

2002-01-01

265

The U.S. Geological Survey Earthquake Hazards Program Website: Summary of Recent and Ongoing Developments  

Microsoft Academic Search

The U.S. Geological Survey (USGS) Earthquake Hazards Program (EHP) website (http:\\/\\/earthquake.usgs.gov\\/) focuses on 1) earthquake reporting for informed decisions after an earthquake, 2) hazards information for informed decisions and planning before an earthquake, and 3) the basics of earthquake science to help the users of the information understand what is presented. The majority of website visitors are looking for information

L. A. Wald; M. Zirbes; S. Robert; D. Wald; B. Presgrace; P. Earle; S. Schwarz; S. Haefner; K. Haller; S. Rhea

2003-01-01

266

Cooperative activities of the U.S. Geological Survey with Historically Black Colleges and Universities, fiscal years 1983-90  

USGS Publications Warehouse

The U.S. Department of the Interior, U.S. Geological Survey, has been involved in numerous cooperative activities with Historically Black Colleges and Universities. Assistance agreements, which include both grants and cooperative agreements, have fostered many educational research and development activities. These activities have included site visits, employment opportunities, curriculum development, seminars, and research projects. The activities are consistent with the Geological Survey's mission of conducting earth-science research and dissemination of the results. The cooperative have benefitted the Historically Black Colleges and Universities, their students, and the Geological Survey.

edited by Hall, A. E.; Scott, J. C.

1991-01-01

267

U.S. Geological Survey national computer technology meeting; program and abstracts, New Orleans, Louisiana, April 10-15, 1994  

USGS Publications Warehouse

This report contains some of the abstracts of papers that were presented at the National Computer Technology Meeting that was held in April 1994. This meeting was sponsored by the Water Resources Division of the U.S. Geological Survey, and was attended by more than 200 technical and managerial personnel representing all the Divisions of the U.S. Geological Survey. Computer-related information from all Divisions of the U.S. Geological Survey are discussed in this compilation of abstracts. Some of the topics addressed are data transfer, data-base management, hydrologic applications, national water information systems, and geographic information systems applications and techniques.

Balthrop, B. H., (compiler); Baker, E.G.

1994-01-01

268

Metrics Survey of Industry-Sponsored Clinical Trials in Canada and Comparator Jurisdictions between 2005 and 2010  

PubMed Central

Industry-sponsored clinical trials play a key role in the development of therapies. This survey suggests that between 2005 and 2010, research-based pharmaceutical firms worldwide initiated fewer trials and recruited fewer subjects annually. In contrast, at the country level, the clinical trial activity of such firms increased in emerging countries and in Japan. Canada's trend in the number of new trials followed that of the global industry, but the trend in new sites and newly recruited subjects fell below the global rate. Informal comparisons point to potential issues for Canada in such areas as site capacity, cost per subject and time to first subject-in. When compared to certain Western European countries and the United States, Canada remained well positioned on a number of metrics. Nonetheless, Canada faces mounting challenges from both traditional locations and emerging countries and may require coordinated efforts to remain a place of choice to conduct trials. PMID:23968618

Leclerc, Jean-Marie; Laberge, Normand; Marion, Jean

2012-01-01

269

Geology  

NSDL National Science Digital Library

With three levels to choose from on each page - beginner, intermediate or advanced - this site provides information on the many different kinds of geological exploration. The elements that make up minerals and the different ways minerals are developed, The special characteristics of minerals, like physical properties, is explained. Earths tectonic plates, the reasons they move, and the effects of the shifting are also given. Also featured is fossils and how they are developed and are found, as well as why fossils are useful tools for scientists.

Bergman, Jennifer

2009-08-03

270

High resolution integrated geological and geophysical surveys for the detection of cavities in coastal karst areas  

NASA Astrophysics Data System (ADS)

Surface or shallow karst constitute a significant problem for many coastal urbanized areas where soluble rocks crop out. This presentation illustrates the advantages of integrating geological and geomorphological methods with geophysical for the detection of cavities in a coastal environment. Direct geological and topographic surveys and indirect with Ground-penetrating radar (GPR), seismic refraction tomography, and electrical resistivity tomography (ERT) surveys have been conducted in the southern Salento peninsula (Italy) in order to map subsurface karstic features. The study was conducted in Santa Maria di Leuca (Lecce) where an important construction (ex Colonia Scarciglia) is located. The carbonatic nature of the rocks means they are affected by karst phenomena, forming such features as sinkholes, collapsed dolines and caverns, as a result of chemical leaching of carbonates by percolating water. Difficulties take the form of the risk of collapse or damage to the construction . By using three geophysical methods and careful processing for the geophysical data, and by modeling these data with geological and topographic information from within the cave, accurate interpretations have been achieved. The constraints on the interpreted geologic models are better when combining the geological and geophysical methods than when using only one of the methods, despite the general limitations of two-dimensional 2D profiling. ERT and seismic methods can complement GPR for accurately delineating a shallow cave section. Conversely, GPR method can be complementary in determining and verifying the presence of off-line features and numerous areas of small cavities and fractures, which may be difficult to resolve in ERT and seismic data. Nevertheless the use of more Integrated geophysical methods could be expensive, therefore with the aim to reduce the geophysical methods 3D ERT models have been realized: this technique applied in karstic areas characterized by the presence of conductive rocks is demonstrated to be appropriate and to give results to high resolution.

Margiotta, S.; Negri, S.; Mazzone, F.

2012-04-01

271

Serologic survey for viral and bacterial infections in western populations of Canada lynx (Lynx canadensis).  

PubMed

A serologic survey for exposure to pathogens in Canada lynx (Lynx canadensis) in western North America was conducted. Samples from 215 lynx from six study areas were tested for antibodies to feline parvovirus (FPV), feline coronavirus, canine distemper virus, feline calicivirus, feline herpesvirus, Yersinia pestis, and Francisella tularensis. A subset of samples was tested for feline immunodeficiency virus; all were negative. For all other pathogens, evidence for exposure was found in at least one location. Serologic evidence for FPV was found in all six areas but was more common in southern populations. Also, more males than females showed evidence of exposure to FPV. Overall, prevalences were low and did not exceed 8% for any of the pathogens tested. This suggests that free-ranging lynx rarely encounter common feline pathogens. PMID:12528455

Biek, Roman; Zarnke, Randall L; Gillin, Colin; Wild, Margaret; Squires, John R; Poss, Mary

2002-10-01

272

Residents' exposure to aboriginal health issues. Survey of family medicine programs in Canada.  

PubMed Central

OBJECTIVE: To determine whether Canadian family medicine residency programs currently have objectives, staff, and clinical experiences for adequately exposing residents to aboriginal health issues. DESIGN: A one-page questionnaire was developed to survey the details of teaching about and exposure to aboriginal health issues. SETTING: Family medicine programs in Canada. PARTICIPANTS: All Canadian family medicine program directors in the 18 programs (16 at universities and two satellite programs) were surveyed between October 1997 and March 1998. MAIN OUTCOME MEASURES: Whether programs had teaching objectives for exposing residents to aboriginal health issues, whether they had resource people available, what elective and core experiences in aboriginal health were offered, and what types of experiences were available. RESULTS: Response rate was 100%. No programs had formal, written curriculum objectives for residency training in aboriginal health issues, although some were considering them. Some programs, however, had objectives for specific weekend or day sessions. No programs had a strategy for encouraging enrollment of residents of aboriginal origin. Eleven programs had at least one resource person with experience in aboriginal health issues, and 12 had access to community-based aboriginal groups. Core experiences were all weekend seminars or retreats. Elective experiences in aboriginal health were available in 16 programs, and 11 programs were active on reserves. CONCLUSIONS: Many Canadian family medicine programs give residents some exposure to aboriginal health issues, but most need more expertise and direction on these issues. Some programs have unique approaches to teaching aboriginal health care that could be shared. Formalized objectives derived in collaboration with other family medicine programs and aboriginal groups could substantially improve the quality of education in aboriginal health care in Canada. PMID:10065306

Redwood-Campbell, L.; MacDonald, W. A.; Moore, K.

1999-01-01

273

Uranium research in the United States by the U. S. geological survey and its application to finding ore deposits  

Microsoft Academic Search

The Branch of Uranium and Thorium Resources is within the U.S. Geological Survey's Geologic Division and is the main uranium research element in the Department of Interior. The Uranium and Thorium Branch currently maintains 66 uranium research projects, each of which is headed by an experienced uranium geologist, geochemist, geophysicist, or chemist. Present program activities are: uranium geochemistry and mineralogy

1978-01-01

274

The Handling of Hazard Data on a National Scale: A Case Study from the British Geological Survey  

Microsoft Academic Search

This paper reviews how hazard data and geological map data have been combined by the British Geological Survey (BGS) to produce a set of GIS-based national-scale hazard susceptibility maps for the UK. This work has been carried out over the last 9 years and as such reflects the combined outputs of a large number of researchers at BGS. The paper

Katherine R. Royse

2011-01-01

275

VOL. 14, NO. 8 A PUBLICATION OF THE GEOLOGICAL SOCIETY OF AMERICA AUGUST 2004 Surveying Volcanic Arcs with Satellite Radar  

E-print Network

VOL. 14, NO. 8 A PUBLICATION OF THE GEOLOGICAL SOCIETY OF AMERICA AUGUST 2004 Inside: Surveying, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California results from Kamchatka. In the central Andes, en- compassing parts of Peru, Bolivia, Chile, and Argentina

Pritchard, Matthew

276

GED Candidates in Canada. A Report on the 1992 Canadian Candidate Survey. A GED Profile Research Report.  

ERIC Educational Resources Information Center

From September 1991 to June 1992, the General Educational Development (GED) Testing Service conducted a national survey of adults who took the GED Tests in Canada. The purpose of the study was to describe background characteristics, experiences, attitudes, and expectations of adults who took the GED Test. Findings indicated that the average age of

Baldwin, Janet; Qi, Sen

277

Bibliography of U.S. Geological Survey reports on the water resources of Florida, 1886-1986  

USGS Publications Warehouse

The U.S. Geological Survey has released a listing of its report on water resources in Florida for the period 1886-1984. Most of the reports contained in the listing were prepared by the U.S. Geological Survey in cooperation with numerous public agencies in Florida. The compilation has a full bibliographic list of reports arranged alphabetically by senior author. In addition, the reports are indexed by geographic areas and by subject. (USGS)

Claiborne, Maude; Embry, T. L.; Hoy, N. D.; Weldon, D. H.; Wilson, T. D.

1987-01-01

278

Preliminary geology, mineral chemistry and diamond results from the C29/30 Candle Lake volcanic complex, Saskatchewan, Canada  

NASA Astrophysics Data System (ADS)

The C29/30 kimberlite is one of two diamondiferous kimberlites in the Candle Lake cluster located in east-central Saskatchewan, Canada, approximately 70 km from the Fort la Corne kimberlite field. The kimberlites are hosted by a Cretaceous sequence of marine mudstone and shale of the Lower Colorado Group, and underlying siltstone and sandstone of the Mannville Group. This sequence overlies Paleozoic carbonates that were deposited over the Proterozoic crystalline basement. Based on the country rock stratigraphy and morphology of the body, C29/30 is inferred to be Cretaceous in age. The elongated kimberlite body has a lateral extent of approximately 2 km with the long axis oriented in a south-east to north-west direction and an estimated surface expression of 75.3 ha. The investigation of 47 drill cores suggests that this body is a single volcanic complex dominated by a single phase of volcaniclastic kimberlite that is characterised by absent to rare phlogopite within the groundmass of preserved juvenile clasts. Minor amounts of at least one other phase of kimberlite containing conspicuous groundmass phlogopite have also been documented. The subsurface shape of C29/30 is complex and is interpreted to result from a combination of explosive volcanic activity that formed two craters from separate feeder vents. The formation of the elongated trough is poorly understood. It may have formed by a fissure style eruption, or erosive processes related to the mass flow of material away from one of the craters or possible the collapse of an eruption column. The C29/30 kimberlite is similar to bodies of the Fort la Corne kimberlite field with respect to country rock setting, pipe morphology and the dominant textural varieties present. This contribution presents a preliminary geological model of C29/30 based on data obtained from the drilling programmes completed in 2006, 2007 and 2008.

Verigeanu, D.; Hetman, C. M.; Jellicoe, B.; Baumgartner, M. C.

2009-11-01

279

Climate variation and its effects on our land and water : Part C, Geological Survey climate plan  

USGS Publications Warehouse

To better coordinate information being generated by the U.S. Geological Survey, a workshop was convened near Denver, Colo., on December 7-9, 1976, to exchange ideas about research that is oriented toward climate, climate variation, and the effects of climate on the Nation 's land and water resources. This is the first circular of a three-part report resulting from that workshop. Hydrologic records provide information to the earth scientist about the responses of ground water, surface water, and glaciers to climatic change; geologic sequences provide evidence of earth-surface water, and glaciers to climatic change; geologic sequences provide evidence of earth-surface responses to climatic change; biological records yield information about the effects of climatic change on the Earth 's biota; archeological records tell us where and how man was able to live under changing climatic conditions; and historical records allow the specific effects of short-term changes in climate to be accurately documented. The interrelation between present and past geologic environments, various methods of study , and the span of time over which the results can be applied are shown in a table. (Woodard-USGS)

edited by Howard, Keith A.; Smith, George I.

1978-01-01

280

Seismic Refraction - Wide-angle Reflection Survey of the Coast Mountains Batholith, British Columbia, Canada  

NASA Astrophysics Data System (ADS)

In July 2009, a controlled-source seismic survey was conducted across the Coast Mountains Batholith of British Columbia, western Canada. This survey is a part of BATHOLITHS, a joint American-Canadian, interdisciplinary project to study the Jurassic-Eocene Coast Mountains Batholith and investigate the processes that generate continental crust. Crust of andesitic composition is formed in continental arcs by the distillation of more basaltic rocks originally derived from mafic mantle melts, a process which should leave behind an ultramafic residue. This residue may remain hidden beneath the geophysical Moho or may delaminate and sink into the mantle during either subduction or later arc collapse. For BATHOLITHS, 16 explosive shots along a 400-km east-west line were recorded by vertical-component seismometers at a 200-m spacing onshore and 500-m spacing along fjord shorelines and by 3-component seismometers at a 2-km spacing. Two additional shots and 104 seismometers located 150 to 250 km offline will be used to constrain along-strike variation. Refraction and wide-angle reflection data from this experiment will allow us to determine crustal thickness and velocity structure and major structural features of the crust and upper mantle. Preliminary results show that the crust is 30-38 km thick with no major root under the batholith and mountains. A strong mid-crustal reflector is observed under the batholith. Analysis is continuing and further preliminary results will be presented.

Oakley, D. O.; Kuhn, M. E.; Stephenson, A. L.; Wang, K.; Spence, G.; Hole, J. A.; Miller, K. C.; Harder, S. H.; Kaip, G. M.; Clowes, R. M.; Hammer, P. T.

2009-12-01

281

The interoperability skill of the Geographic Portal of the ISPRA - Geological Survey of Italy  

NASA Astrophysics Data System (ADS)

The Geographic Portal of Geological Survey of Italy (ISPRA) available at http://serviziogeologico.apat.it/Portal was planning according to standard criteria of the INSPIRE directive. ArcIMS services and at the same time WMS and WFS services had been realized to satisfy the different clients. For each database and web-services the metadata had been wrote in agreement with the ISO 19115. The management architecture of the portal allow it to encode the clients input and output requests both in ArcXML and in GML language. The web-applications and web-services had been realized for each database owner of Land Protection and Georesources Department concerning the geological map at the scale 1:50.000 (CARG Project) and 1:100.000, the IFFI landslide inventory, the boreholes due Law 464/84, the large-scale geological map and all the raster format maps. The portal thus far published is at the experimental stage but through the development of a new graphical interface achieves the final version. The WMS and WFS services including metadata will be re-designed. The validity of the methodology and the applied standards allow to look ahead to the growing developments. In addition to this it must be borne in mind that the capacity of the new geological standard language (GeoSciML), which is already incorporated in the web-services deployed, will be allow a better display and query of the geological data according to the interoperability. The characteristics of the geological data demand for the cartographic mapping specific libraries of symbols not yet available in a WMS service. This is an other aspect regards the standards of the geological informations. Therefore at the moment were carried out: - a library of geological symbols to be used for printing, with a sketch of system colors and a library for displaying data on video, which almost completely solves the problems of the coverage point and area data (also directed) but that still introduces problems for the linear data (solutions: ArcIMS services from Arcmap projects or a specific SLD implementation for WMS services); - an update of "Guidelines for the supply of geological data" in a short time will be published; - the Geological Survey of Italy is officially involved in the IUGS-CGI working group for the processing and experimentation on the new GeoSciML language with the WMS/WFS services. The availability of geographic informations occurs through the metadata that can be distributed online so that search engines can find them through specialized research. The collected metadata in catalogs are structured in a standard (ISO 19135). The catalogs are a common' interface to locate, view and query data and metadata services, web services and other resources. Then, while working in a growing sector of the environmental knowledgement the focus is to collect the participation of other subjects that contribute to the enrichment of the informative content available, so as to be able to arrive to a real portal of national interest especially in case of disaster management.

Pia Congi, Maria; Campo, Valentina; Cipolloni, Carlo; Delogu, Daniela; Ventura, Renato; Battaglini, Loredana

2010-05-01

282

Contaminants and drinking-water sources in 2001; recent findings of the U. S. Geological Survey  

USGS Publications Warehouse

As the Nation's principal earth-science agency, the U.S. Geological Survey (USGS) studies numerous issues related to contamination of drinking-water sources. The work includes monitoring to determine the spatial and temporal distribution of contaminants; research to determine sources, transport, transformations, and fate of contaminants, and assessments of vulnerability. Much of the work is conducted in cooperation with the U.S. Environmental Protection Agency and other Federal, State, Tribal, and local governments, to help provide a scientific basis for resource management and regulation. Examples of recent results are presented for two broad categories of drinking-water projects: occurrence studies, and source-water assessments.

Patterson, G.G.; Focazio, M.J.

2000-01-01

283

Surface Water Quality-Assurance Plan for the Alabama District of the U. S. Geological Survey  

USGS Publications Warehouse

The U.S. Geological Survey, Water Resources Division, has a policy that requires each District office to prepare a Surface Water Quality-Assurance Plan. The plan for each District describes the policies and procedures that ensure high quality in the collection, processing, analysis, computer storage, and publication of surface-water data. The Alabama District Surface Water Quality-Assurance Plan documents the standards, policies, and procedures used by the District for activities related to the collection, processing, storage, analysis, and publication of surface-water data.

Hedgecock, T. Scott; Pearman, J. Leroy; Stricklin, Victor E.

2002-01-01

284

The stream-gaging program of the U.S. Geological Survey  

USGS Publications Warehouse

The U.S. Geological Survey stream-gaging program provides streamflow data for a variety of purposes. The uses of streamflow data are described, and the growth of the stream-gaging program is related to legislation and the need to manage the Nation's water resources more effectively. A brief description is provided of the data-collection processes, computation of streamflow records, dissemination of data, and the nationwide evaluations of the stream-gaging program. Finally, the challenges for maintaining a viable stream-gaging program are described.

Wahl, Kenneth L.; Thomas, Wilbert O.; Hirsch, Robert M.

1995-01-01

285

Methods for Adjusting U.S. Geological Survey Rural Regression Peak Discharges in an Urban Setting  

USGS Publications Warehouse

A study was conducted of 78 U.S. Geological Survey gaged streams that have been subjected to varying degrees of urbanization over the last three decades. Flood-frequency analysis coupled with nonlinear regression techniques were used to generate a set of equations for converting peak discharge estimates determined from rural regression equations to a set of peak discharge estimates that represent known urbanization. Specifically, urban regression equations for the 2-, 5-, 10-, 25-, 50-, 100-, and 500-year return periods were calibrated as a function of the corresponding rural peak discharge and the percentage of impervious area in a watershed. The results of this study indicate that two sets of equations, one set based on imperviousness and one set based on population density, performed well. Both sets of equations are dependent on rural peak discharges, a measure of development (average percentage of imperviousness or average population density), and a measure of homogeneity of development within a watershed. Average imperviousness was readily determined by using geographic information system methods and commonly available land-cover data. Similarly, average population density was easily determined from census data. Thus, a key advantage to the equations developed in this study is that they do not require field measurements of watershed characteristics as did the U.S. Geological Survey urban equations developed in an earlier investigation. During this study, the U.S. Geological Survey PeakFQ program was used as an integral tool in the calibration of all equations. The scarcity of historical land-use data, however, made exclusive use of flow records necessary for the 30-year period from 1970 to 2000. Such relatively short-duration streamflow time series required a nonstandard treatment of the historical data function of the PeakFQ program in comparison to published guidelines. Thus, the approach used during this investigation does not fully comply with the guidelines set forth in U.S. Geological Survey Bulletin 17B, and modifications may be needed before it can be applied in practice.

Moglen, Glenn E.; Shivers, Dorianne E.

2006-01-01

286

Preliminary results from permanent GPS array by the Geological Survey of Japan in conjunction with groundwater-level observations  

Microsoft Academic Search

A regional continuous Global Positioning System (GPS) array, consisting of uniform antenna type, has been established by the Geological Survey of Japan (GSJ) mainly around the Kansai district. Geodetic results for 2.5 years data are as follows. In comparison with the solutions obtained from the Geographical Survey Institute (GSI) continuous GPS array which employs different type of antenna from the

Ryu Ohtani; Naoji Koizumi; Norio Matsumoto; Eikichi Tsukuda

2000-01-01

287

A Survey of the Utility of Satellite Magnetometer Data for Application to Solid-earth Geophysical and Geological Studies  

NASA Technical Reports Server (NTRS)

A survey of potential users of low altitude satellite magnetic measurements for solid-earth and geological studies was conducted. The principal objectives of this survey were to: document the utility and application of the data and resultant products obtained from such a satellite mission, and establish a users committee for the proposed low altitude vector magnetometer satellite.

1975-01-01

288

Bibliography of Regional Aquifer-System Analysis Program of the US Geological Survey, 1978-96  

USGS Publications Warehouse

The Regional Aquifer-System Analysis (RASA) Program of the U.S. Geological Survey was initiated in 1978 and was completed in 1995. The purpose of this program was to define the regional geohydrology and establish a framework of background information on geology, hydrology, and geochemistry of the Nation's important aquifer systems. This information is critically needed to develop an understanding of the Nation's major ground-water flow systems and to support better management of ground-water resources. Twenty-five of the Nation's major aquifer systems were studied under this program. Starting in 1988, the program devoted part of its resources to compilation of a National Ground Water Atlas that presets a comprehensive summary of the Nation's major ground-water resources. The atlas, which is designed in a graphical format supported by descriptive text, serves as a basic reference for the location, geography, geology, and hydrologic characteristics of the major aquifers in the Nation. This bibliography lists 1,105 reports that result from various studies of the program. The list of reports for each study follows a brief description of that study.

Sun, Ren Jen; Weeks, John B.; Grubb, Hayes F.

1997-01-01

289

Investigations and research in Nevada by the Water Resources Division, U.S. Geological Survey, 1982  

USGS Publications Warehouse

The Water Resources Division, U.S. Geological Survey, is charged with (1) maintaining a hydrologic network in Nevada that provides information on the status of the State 's water resources and (2) engaging in technical water-resources investigations that have a high degree of transferability. To meet these broad objectives, 26 projects were active during fiscal year 1982, in cooperation with 36 Federal, State, and local agencies. Total funds were $3,319,455, of which State and local cooperative funding amounted to $741,500 and Federal funding (comprised of Geological Survey Federal and cooperative program plus funds from six other Federal agencies) amounted to $2,577,955 for the fiscal year. Projects other than continuing programs for collection of hydrologic data included the following topics of study: geothermal resources, areal ground-water resources and ground-water modeling, waste disposal , paleohydrology, acid mine drainage, the unsaturated zone, stream and reservoir sedimentation, river-quality modeling, flood hazards, and remote sensing in hydrology. In total, 26 reports and symposium abstracts were published or in press during fiscal year 1982. (USGS)

Katzer, Terry; Moosburner, Otto; Nichols, W.D.

1984-01-01

290

Resources for Teaching About Evolution from the U.S. Geological Survey  

NASA Astrophysics Data System (ADS)

As a scientific research agency, the U.S. Geological Survey (USGS) is in an ideal position to provide scientific information and resources to educators. The USGS is not a curriculum developer, nor an expert in pedagogy, yet the USGS does have a wealth of scientific information on subjects such as fossils, geologic time, biological resources and plate tectonics that naturally come in to play in the teaching of evolution. Among USGS resources are the general interest pamphlets Geologic Time, Dinosaurs: Facts And Fiction, Our Changing Continent, and Fossils Rocks, and Time, and its accompanying poster, Fossils Through Time. In addition to printed versions, the pamphlets are available at no cost on the Internet at http://pubs.usgs.gov/gip/. The popular booklet, This Dynamic Earth: The Story of Plate Tectonics, available at http://pubs.usgs.gov/publications/text/dynamic.html, touches on evolution-related subjects such as Alfred Wegener's use of fossils to develop his theory of continental drift, "polar" dinosaur fossils found in Australia, marine fossils in the rocks of the Himalayas, and the use of fossil ages to determine rates of plate motions. Paleontological research at the USGS is highlighted on the Internet at http://geology.er.usgs.gov/paleo/. The web site includes links to technical publications, profiles of scientists, a geologic time scale, a glossary, information on important fossil groups, and a list of non-USGS references on fossils: all very useful to educators. A wealth of biological information and data can be found in the National Biological Information Infrastructure (NBII), a multi-agency collaborative program led by the USGS. In addition to data on the Nation's biological resources, the NBII web site http://www.nbii.gov/ includes a section on systematics and scientific names (helpful for illustrating the evolutionary relationships among living organisms), and links to non-USGS curriculum materials. A fact sheet, Unveiling the NBII as a Teaching Resource, is available at http://www.nbii.gov/about/pubs/factsheet/pdf/education.pdf. Evolution is a key theme in the scope of many USGS research activities. From the evolution of living organisms, to the evolution of geological materials and landforms, the USGS is a rich source of current, accurate, and relevant scientific information for teachers in today's classroom.

Gordon, L. C.

2001-12-01

291

Earth history at the century mark of the U.S. Geological Survey*  

PubMed Central

Earth history involves all aspects of geological and biological evolution, especially paleontology and stratigraphy. Early paleontological exploration of the western United States by and before the U.S. Geological Survey featured the dramatic discoveries and rivalries of the great vertebrate paleontologists Leidy, Cope, Marsh, and Osborn. Invertebrate paleontology and paleobotany in the U.S. Geological Survey blossomed with emphasis on practical missions. The most illuminating and useful earth history, nevertheless, emerges where there is a high degree of interaction with academic scholars. Despite a good knowledge of its broad features, the drama of earth history remains obscure in detail. Whereas it speaks conclusively for the reality of organic evolution, it is less conclusive about mechanisms and many important transitions. Current investigations, however, especially in pre-Phanerozoic, mammalian, and human paleontology, promise improved insights. New techniques in collecting, sample preparation, and research are revealing previously unknown kinds of fossils and exquisite details of preservation. Plate tectonic theory provides a new framework for historical geography and biogeography. Emerging techniques in geochronologymatching paleopolarity sequences, for examplepromise to resolve old problems of the synchroneity or heterochroneity of different biotal provinces. As it splits into subfields, the teaching and practice of paleontology expand to cover all of them. The fossils themselves, however, remain the basic objective evidence. All hypotheses about them must answer to this court of appeal. But nature rarely responds in an either-or way. The most probable hypotheses are those that have repeatedly confronted objective reality and survived all opportunity for disproof. PMID:16592705

Simpson, George Gaylord

1979-01-01

292

Suggestions to authors of papers submitted for publication by the United States Geological Survey with directions to typists  

USGS Publications Warehouse

The present edition, like the others, is intended primarily for Geological Survey authors or prospective authors: it is not the manual of wider scope that Mr. Wood had planned, and it contains none of his new material. If authors outside the Survey shall continue to find the suggestions useful, that will be a byproduct that testifies to the quality of the Survey's standards, which were established early in its history.

Wood, George McLane, (Edited By); Lane, Bernard H.

1935-01-01

293

Four quasars above redshift 6 discovered by the Canada-France High-z Quasar Survey  

E-print Network

The Canada-France High-z Quasar Survey (CFHQS) is an optical survey designed to locate quasars during the epoch of reionization. In this paper we present the discovery of the first four CFHQS quasars at redshift greater than 6, including the most distant known quasar, CFHQS J2329-0301 at z=6.43. We describe the observational method used to identify the quasars and present optical, infrared, and millimeter photometry and optical and near-infrared spectroscopy. We investigate the dust properties of these quasars finding an unusual dust extinction curve for one quasar and a high far-infrared luminosity due to dust emission for another. The mean millimeter continuum flux for CFHQS quasars is substantially lower than that for SDSS quasars at the same redshift, likely due to a correlation with quasar UV luminosity. For two quasars with sufficiently high signal-to-noise optical spectra, we use the spectra to investigate the ionization state of hydrogen at z>5. For CFHQS J1509-1749 at z=6.12, we find significant evolution (beyond a simple extrapolation of lower redshift data) in the Gunn-Peterson optical depth at z>5.4. The line-of-sight to this quasar has one of the highest known optical depths at z~5.8. An analysis of the sizes of the highly-ionized near-zones in the spectra of two quasars at z=6.12 and z=6.43 suggest the IGM surrounding these quasars was substantially ionized before these quasars turned on. Together, these observations point towards an extended reionization process, but we caution that cosmic variance is still a major limitation in z>6 quasar observations.

Chris J. Willott; Philippe Delorme; Alain Omont; Jacqueline Bergeron; Xavier Delfosse; Thierry Forveille; Loic Albert; Celine Reyle; Gary J. Hill; Michael Gully-Santiago; Phillip Vinten; David Crampton; John B. Hutchings; David Schade; Luc Simard; Marcin Sawicki; Alexandre Beelen; Pierre Cox

2007-06-06

294

The Canada-France Deep Fields Survey. III. Photometric Redshift Distribution to IAB = 24  

NASA Astrophysics Data System (ADS)

We compute accurate redshift distributions to IAB=24 and RAB=24.5 using photometric redshifts estimated from six-band UBVRIZ photometry in the Canada-France Deep Fields Photometric Redshift Survey (CFDF-PRS). Our photometric redshift algorithm is calibrated using hundreds of CFRS spectroscopic redshifts in the same fields. The dispersion in redshift is ?/(1+z)<~0.04 to the CFRS depth of IAB=22.5, rising to ?/(1+z)<~0.06 at our nominal magnitude and redshift limits of IAB=24 and z<=1.3, respectively. We describe a new method to compute N(z) that incorporates the full redshift likelihood functions in a Bayesian iterative analysis, and we demonstrate in extensive Monte Carlo simulations that it is superior to distributions calculated using simple maximum likelihood redshifts. The field-to-field differences in the redshift distributions, while not unexpected theoretically, are substantial even on 30' scales. We provide IAB and RAB redshift distributions, median redshifts, and parameterized fits of our results in various magnitude ranges, accounting for both random and systematic errors in the analysis.

Brodwin, M.; Lilly, S. J.; Porciani, C.; McCracken, H. J.; Le Fvre, O.; Foucaud, S.; Crampton, D.; Mellier, Y.

2006-01-01

295

Information and informatics in a geological survey - the good, the bad and the ugly  

NASA Astrophysics Data System (ADS)

It is apparent that the most successful geological surveys (as measured by the only true Key Performance Indicator - their effectiveness in serving their societies) have recognised that, while their core business is making maps and models and doing scientific research to underpin that, the commodity they actually deal in is data and information and knowledge. They know that in a digital world the better they organise the data and information and knowledge, the more successful they will be. In our future world, where e-science will surely dominate, some are already sub-titling themselves as information or knowledge exchange organisations. There seems an unarguable correlation between surveys which organise their information well and those that run their projects well, their agility in responding to government agendas or national emergencies, and flexibility in delivering products their diverse users want. Look deeper and you can see the pivotal role of best practice information management and the tangible benefits a responsible approach to acquiring, storing and delivering information brings. But even in these (most successful) surveys the people leading information management will tell you that it was a gargantuan battle to get the resources to achieve this success and that, even with the downstream fruits of the investment in professional information management and informatics now obvious, it is a continuing struggle to maintain a decent level of funding for these tasks. It is not hard to see why; the struggle is innately one-sided; geoscientists are born and/or trained to be curious, to be independent and to innovate. If the choice is between more research and survey, or a professional approach to information/informatics and the adjudicators are geoscientists, it is not difficult to pick the winner. So what does lie behind a successful approach to information in a geological survey organisation? First, recognise that poor information management cannot just be cured by investing in hardware and software; it is the geoscience data content (its availability, quality and consistency) that is in greater need of investment. Second, to achieve the full synergies and benefits information management and informatics must be planned into all domains of the Survey and all project phases - acquisition, processing, analysis, dissemination and storage. Adequate investment in front office applications and services to communicate and deliver geoscience to all our stakeholders (eg virtualisation and visualisation) is essential. Without it back office work, however, worthy, is of limited value. Finally, the widely accepted truth is that the real challenge in introducing professional information management and informatics is not technical or scientific, but cultural and managerial. Unless you can sensitively and positively change the work patterns and culture of Survey geoscientists a sustainable outcome will remain beyond reach. Of course to change the work pattern and culture of the geoscientists you must first ensure that the most senior management of the organisation embrace the change wholeheartedly; now there's a challenge! Using examples and experience from the evolution on information management and informatics in the British Geological Survey over the last decade this presentation will explore the issues above.

Jackson, I.

2008-12-01

296

Hydrologic and geologic aspects of waste management and disposal; a bibliography of publications by U.S. Geological Survey authors, 1950-81  

USGS Publications Warehouse

References to more than 550 reports, articles, and maps are listed alphabetically by author and are indexed by subject. The subject index includes geographic-area terms. Citations from 69 series are included; series are listed separately. The publications listed report the results of U.S. Geological Survey research and field projects throughout the Nation concerning earth-science aspects of waste management and disposal. They include organic, inorganic, and radioactive wastes and related topics such as mathematical models of solute transport. Most of the references are to (1) Geological Survey report series such as Water-Supply Papers, Professional Papers, Bulletins, Circulars, Water-Resources Investigations, and Open-File Reports, (2) technical journals of professional organizations, or (3) reports by other Federal and State agencies.

Handman, Elinor H.

1983-01-01

297

U.S. Geological Survey National Computer Technology Meeting; Program and abstracts, May 7-11, 1990  

USGS Publications Warehouse

Computer-related information from all Divisions of the U.S. Geological Survey are discussed in this compilation of abstracts. Some of the topics addressed are system administration; distributed information systems and data bases, both current (1990) and proposed; hydrologic applications; national water information systems; geographic information systems applications and techniques. The report contains some of the abstracts that were presented at the National Computer Technology Meeting that was held in May 1990. The meeting was sponsored by the Water Resources Division and was attended by more than 200 technical and managerial personnel representing all the Divisions of the U.S. Geological Survey. (USGS)

Balthrop, B. H., (compiler); Baker, E.G.

1990-01-01

298

U.S. Department of the Interior August 2013 U.S. Geological Survey  

E-print Network

28, Capstone Mining Corp. (Vancouver, British Columbia, Canada) announced that it had agreed Territory, Canada. Concentrate production was restarted by BHP Billiton at the Pinto Valley Mine in December Valley copper mine: Vancouver, British Columbia, Canada, Capstone Mining Corp. news release, April 28

299

National Research Program of the Water Resources Division, U.S. Geological Survey: Fiscal Year 1988  

USGS Publications Warehouse

The National Research Program (NRP) of the US Geological Survey 's Water Resources Division (WRD) had its beginnings in the late 1950 's when ' core research ' was added as a line item to the Congressional budget. Since that time, the NRP has grown to encompass a broad spectrum of scientific investigations. The sciences of hydrology, mathematics, chemistry, physics, ecology, biology, geology, and engineering are used to gain a fundamental understanding of the processes that affect the availability, movement, and quality of the Nation 's water resources. The NRP is located principally in Reston, VA, Denver, CO, and Menlo Park , CA. The NRP is subdivided into six disciplines as follows: (1) Ecology; (2) Geomorphology and Sediment Transport; (3) Groundwater Chemistry; (4) Groundwater Hydrology; (5) Surface Water Chemistry; and (6) Surface Water Hydrology. The report provides current information about the NRP on an annual basis. Organized by the six research disciplines, the volume contains a summary of the problem, objective, approach, and progress for each project that was active during fiscal year 1988.

Compiled by Friedman, Linda C.; Donato, Christine N.

1989-01-01

300

Illinois State Geological Survey Evaluation of CO2 Capture Options from Ethanol Plants  

SciTech Connect

The Illinois State Geological Survey and the Midwest Geological Sequestration Consortium are conducting CO{sub 2} sequestration and enhanced oil recovery testing at six different sites in the Illinois Basin. The capital and operating costs for equipment to capture and liquefy CO{sub 2} from ethanol plants in the Illinois area were evaluated so that ethanol plants could be considered as an alternate source for CO{sub 2} in the event that successful enhanced oil recovery tests create the need for additional sources of CO{sub 2} in the area. Estimated equipment and operating costs needed to capture and liquefy 68 metric tonnes/day (75 tons/day) and 272 tonnes/day (300 tons/day) of CO{sub 2} for truck delivery from an ethanol plant are provided. Estimated costs are provided for food/beverage grade CO{sub 2} and also for less purified CO{sub 2} suitable for enhanced oil recovery or sequestration. The report includes preliminary plant and equipment designs and estimates major capital and operating costs for each of the recovery options. Availability of used equipment was assessed.

Robert Finley

2006-09-30

301

U.S. Geological Survey Science for the Wyoming Landscape Conservation Initiative-2009 Annual Report  

USGS Publications Warehouse

This is the second report produced by the U.S. Geological Survey (USGS) for the Wyoming Landscape Conservation Initiative (WLCI) to detail annual work activities. The first report described work activities for 2007 and 2008; this report covers work activities conducted in 2009. Important differences between the two reports are that (1) this report does not lump all the Effectiveness Monitoring activities together as last year's report did, which will allow WLCI partners and other readers to fully appreciate the scope and accomplishments of those activities, and (2) this report does not include a comprehensive appendix of the background details for each work activity. In 2009, there were 29 ongoing or completed activities, and there were 5 new work activities conducted under the 5 original major multi-disciplinary science and technical assistance activities: (1) Baseline Synthesis; (2) Targeted Monitoring and Research; (3) Data and Information Management; (4) Integration and Coordination; and (5) Decisionmaking and Evaluation. New work included (1) developing a soil-quality index, (2) developing methods for assessing levels of and relationships between mercury and soil organic matter, and (3) ascertaining element source, mobility, and fate. Additionally, (4) remotely sensed imagery was used to assess vegetation as an indicator of soil condition and geology, and (5) an Integrated Assessment (IA) was initiated to synthesize what has been learned about WLCI systems to date, and to develop associated decision tools, maps, and a comprehensive report.

Bowen, Z. H.; Aldridge, C. L.; Anderson, P. J.; Assal, T. J.; Biewick, L. R. H.; Blecker, S. W.; Bristol, S.; Carr, N. B.; Chalfoun, A. D.; Chong, G. W.; Diffendorfer, J. E.; Fedy, B. C.; Garman, S. L.; Germaine, S.; Grauch, R. I.; Holloway, J.; Homer, C.; Kauffman, M. J.; Keinath, D.; Latysh, N.; Manier, D.; McDougal, R. R.; Melcher, C. P.; Miller, K. A.; Montag, J.; Nutt, C. J.; Potter, C. J.; Sawyer, H.; Schell, S.; Shafer, S. L.; Smith, D. B.; Stillings, L. L.; Tuttle, M.; Wilson, A. B.

2010-01-01

302

The national coal-resources data system of the U.S. geological survey  

USGS Publications Warehouse

The National Coal Resources Data System (NCRDS) was designed by the U.S. Geological Survey (USGS) to meet the increasing demands for rapid retrieval of information on coal location, quantity, quality, and accessibility. An interactive conversational query system devised by the USGS retrieves information from the data bank through a standard computer terminal. The system is being developed in two phases. Phase I, which currently is available on a limited basis, contains published areal resource and chemical data. The primary objective of this phase is to retrieve, calculate, and tabulate coal-resource data by area on a local, regional, or national scale. Factors available for retrieval include: state, county, quadrangle, township, coal field, coal bed, formation, geologic age, source and reliability of data, and coal-bed rank, thickness, overburden, and tonnage, or any combinations of variables. In addition, the chemical data items include individual values for proximate and ultimate analyses, BTU value, and several other physical and chemical tests. Information will be validated and deleted or updated as needed. Phase II is being developed to store, retrieve, and manipulate basic point source coal data (e.g., field observations, drill-hole logs), including geodetic location; bed thickness; depth of burial; moisture; ash; sulfur; major-, minor-, and trace-element content; heat value; and characteristics of overburden, roof rocks, and floor rocks. The computer system may be used to generate interactively structure-contour or isoline maps of the physical and chemical characteristics of a coal bed or to calculate coal resources. ?? 1976.

Carter, M.D.

1976-01-01

303

Recent developments in uranium exploration using the U.S. geological survey's mobile helium detector  

USGS Publications Warehouse

A mobile mass spectrometer to measure He concentrations has been developed by the U.S. Geological Survey. This instrument has been tested in areas of known uranium deposits, and He anomalies have been found in both soil gas and water. A gas sample is collected in a hypodermic syringe, injected into the spectrometer, and analyzed for He. Over 100 analyses a day can be performed with a sensitivity of 10 parts per billion (ppb). One detailed study conducted in Weld County, Colorado, shows that values for He in soil gas can be contoured to outline an anomalous area and that the anomaly is displaced from the deposit in the direction of groundwater flow. Other studies include the Schwartzwalder uranium mine, Jefferson County, Colorado, where He anomalies may be related to geologic structure; near Ambrosia Lake, New Mexico, where the location of He anomalies are related to groundwater movement; and tests for diurnal effects showing only slight variations probably related to soil-moisture content. ?? 1979.

Reimer, G.M.; Denton, E.H.; Friedman, I.; Otton, J.K.

1979-01-01

304

Preliminary geologic investigation of the Apollo 17 landing site. [orbital and lunar surface geological surveys during Apollo 17 flight  

NASA Technical Reports Server (NTRS)

A geological investigation of the Apollo 17 lunar landing site was conducted. The Taurus-Littrow valley is interpreted as a deep graben formed by structural adjustment of lunar crustal material to the Serenitatis impact. Materials of the valley fill were sampled at many stations. Ejecta around many craters on the valley floor consist of basalt, showing that the graben was partly filled by lava flows. The geological objectives of the Apollo 17 mission are divided into orbital and lunar surface data collection. The data obtained for both types of investigation are presented in tables, photographs, and drawings.

Muehlberger, W. R.; Batson, R. M.; Cernan, E. A.; Freeman, V. L.; Hait, M. H.; Holt, H. E.; Howard, K. A.; Jackson, E. D.; Larson, K. B.; Reed, V. S.

1973-01-01

305

U.S. Geological Survey Activities Related to American Indians and Alaska Natives - Fiscal Year 2006  

USGS Publications Warehouse

In the late 1800s, John Wesley Powell, the second director of the U.S. Geological Survey (USGS), followed his interest in the tribes of the Great Basin and Colorado Plateau and studied their cultures, languages, and surroundings. From that early time, the USGS has recognized the importance of Native knowledge and living in harmony with nature as complements to the USGS mission to better understand the Earth. Combining traditional ecological knowledge with empirical studies allows the USGS and Native American governments, organizations, and people to increase their mutual understanding and respect for this land. The USGS is the earth and natural science bureau within the U.S. Department of the Interior (DOI). The USGS does not have regulatory or land management responsibilities.

Marcus, Susan M.

2008-01-01

306

The United States Geological Survey: A vision for the 21st century  

USGS Publications Warehouse

Leadership in Earth science for sustained global health, welfare, and prosperity. We envision a U.S. Geological Survey that is a global leader in relevant, innovative, and interdisciplinary Earth science. We shall conduct collaborative, impartial, multi-scale scientific investigations into the Earth's systems and conditions through a spectrum of basic to applied research on the environment, hazards, resources, and information management, all in support of present and future societal needs. We envision an organization that serves the public by sharing Earthscience data and information and by promoting its dissemination, understanding, and application. We shall be a flexible organization that values its employees and works in concert with them for attainment of both institutional and individual goals.

1993-01-01

307

United States Geological Survey fire science--Fire danger monitoring and forecasting  

USGS Publications Warehouse

Each day, the U.S. Geological Survey produces 7-day forecasts for all Federal lands of the distributions of number of ignitions, number of fires above a given size, and conditional probabilities of fires growing larger than a specified size. The large fire probability map is an estimate of the likelihood that ignitions will become large fires. The large fire forecast map is a probability estimate of the number of fires on federal lands exceeding 100 acres in the forthcoming week. The ignition forecast map is a probability estimate of the number of fires on Federal land greater than 1 acre in the forthcoming week. The extreme event forecast is the probability estimate of the number of fires on Federal land that may exceed 5,000 acres in the forthcoming week.

Eidenshink, Jeff C.; Howard, Stephen M.

2012-01-01

308

A statistical summary of data from the U.S. Geological Survey's national water quality networks  

USGS Publications Warehouse

The U.S. Geological Survey Operates two nationwide networks to monitor water quality, the National Hydrologic Bench-Mark Network and the National Stream Quality Accounting Network (NASQAN). The Bench-Mark network is composed of 51 stations in small drainage basins which are as close as possible to their natural state, with no human influence and little likelihood of future development. Stations in the NASQAN program are located to monitor flow from accounting units (subregional drainage basins) which collectively encompass the entire land surface of the nation. Data collected at both networks include streamflow, concentrations of major inorganic constituents, nutrients, and trace metals. The goals of the two water quality sampling programs include the determination of mean constituent concentrations and transport rates as well as the analysis of long-term trends in those variables. This report presents a station-by-station statistical summary of data from the two networks for the period 1974 through 1981. (Author 's abstract)

Smith, R. A.; Alexander, R. B.

1983-01-01

309

Stream-Network navigation in the U.S. geological survey streamStats web application  

USGS Publications Warehouse

StreamStats is a U.S. Geological Survey Webbased geographic information systems application developed as a tool for water-resources planning and management, engineering design, and other applications. The primary functionality of StreamStats allows users to obtain drainage-basin boundaries, basin characteristics, and streamflow statistics for gaged and ungaged sites. Recently, tools that allow stream-network navigation were added to StreamStats. These tools allow users to select any point along a stream and locate activities upstream and downstream from the selected point, such as streamgaging stations, dams, and point-source discharges, and obtain information about such activities. Users also can obtain stream-reach addresses and estimates of streamflow statistics for the selected points.

Ries, K. G.; Steeves, P. A.; Guthrie, J. D.; Rea, A. H.; Stewart, D. W.

2009-01-01

310

Geology of the Byrd Glacier Discontinuity (Ross Orogen): New survey data from the Britannia Range, Antarctica  

USGS Publications Warehouse

Field activities in the Britannia Range (Transantarctic Mountains, Antarctica) highlighted new geological features around the so-called Byrd Glacier discontinuity. Recent field surveys revealed the occurrence of significant amounts of medium- to high-grade metamorphic rocks, intruded by abundant coarse-grained porphyritic granitoids. Most of the granitoids are deformed, with foliation parallel to the regional foliation in the metamorphics. Two main episodes of deformation are observed. Tight to isoclinal folds and penetrative axial plane foliation are related to the D1 phase, open folds to the D2. The main foliation (D1) trends nearly E-W in agreement with the trend in the southern portion of the Byrd Glacier. In most outcrops, granitic dykes are folded and stretched by the D2 deformation, which shows similar characteristics with the D2 deformation south of the Byrd Glacier. This suggests the occurrence in the Ross orogen of an orogen-normal structure south and north of the Byrd Glacier.

Carosi, R.; Giacomini, F.; Talarico, F.; Stump, E.

2007-01-01

311

Summary of U.S. Geological Survey on-line instantaneous fluvial sediment and ancillary data  

USGS Publications Warehouse

Instantaneous fluvial sediment data, in addition to other instantaneous water-quality and ancillary data collected by the U.S. Geological Survey (USGS), are available on-line through the National Water Information System World Wide Web (NWISWeb) water-quality data base at http://waterdata.usgs.gov/nwis/qwdata. The NWISWeb water-quality data base was populated and is periodically refreshed from electronic files maintained by individual USGS District offices across the United States and Puerto Rico. It represents the single largest repository of USGS electronic instantaneous-value suspended-sediment, bedload, and bed-material data. These Web pages provide a summary of fluvial-sediment data by State, and by USGS station number retrieved from the then-under-construction NWISWeb data base on January 13, 2000. The meta data can be accessed by following the links at the bottom of this Web page.

Turcios, Lisa M.; Gray, John R.; Ledford, Annette L.

2000-01-01

312

U.S. Geological Survey Combined Well-Bore Flow and Depth-Dependent Water Sampler  

USGS Publications Warehouse

The U.S. Geological Survey has developed a combined well-bore flow and depth-dependent sample collection tool. It is suitable for use in existing production wells having limited access and clearances as small as 1 inch. The combination of well-bore flow and depth-dependent water-quality data is especially effective in assessing changes in aquifer properties and water quality with depth. These are direct measures of changes in well yield and ground-water quality with depth under actual operating conditions. Combinations of other geophysical tools capable of making these measurements, such as vertical-axis current meters used with wire-line samplers, are commercially available but these tools are large and can not easily enter existing production wells.

Izbicki, John A.; Christensen, Allen H.; Hanson, Randall T.; Martin, Peter; Crawford, Steven M.; Smith, Gregory A.

1999-01-01

313

U.S. Geological Survey Methodology Development for Ecological Carbon Assessment and Monitoring  

USGS Publications Warehouse

Ecological carbon sequestration refers to transfer and storage of atmospheric carbon in vegetation, soils, and aquatic environments to help offset the net increase from carbon emissions. Understanding capacities, associated opportunities, and risks of vegetated ecosystems to sequester carbon provides science information to support formulation of policies governing climate change mitigation, adaptation, and land-management strategies. Section 712 of the Energy Independence and Security Act (EISA) of 2007 mandates the Department of the Interior to develop a methodology and assess the capacity of our nation's ecosystems for ecological carbon sequestration and greenhouse gas (GHG) flux mitigation. The U.S. Geological Survey (USGS) LandCarbon Project is responding to the Department of Interior's request to develop a methodology that meets specific EISA requirements.

Zhu, Zhiliang; Stackpoole, S. M.

2009-01-01

314

Landsat Image Map Production Methods at the U. S. Geological Survey  

USGS Publications Warehouse

To maintain consistently high quality in satellite image map production, the U. S. Geological Survey (USGS) has developed standard procedures for the photographic and digital production of Landsat image mosaics, and for lithographic printing of multispectral imagery. This paper gives a brief review of the photographic, digital, and lithographic procedures currently in use for producing image maps from Landsat data. It is shown that consistency in the printing of image maps is achieved by standardizing the materials and procedures that affect the image detail and color balance of the final product. Densitometric standards are established by printing control targets using the pressplates, inks, pre-press proofs, and paper to be used for printing.

Kidwell, R.D.; Binnie, D.R.; Martin, S.

1987-01-01

315

Description of the U.S. Geological Survey Geo Data Portal data integration framework  

USGS Publications Warehouse

The U.S. Geological Survey has developed an open-standard data integration framework for working efficiently and effectively with large collections of climate and other geoscience data. A web interface accesses catalog datasets to find data services. Data resources can then be rendered for mapping and dataset metadata are derived directly from these web services. Algorithm configuration and information needed to retrieve data for processing are passed to a server where all large-volume data access and manipulation takes place. The data integration strategy described here was implemented by leveraging existing free and open source software. Details of the software used are omitted; rather, emphasis is placed on how open-standard web services and data encodings can be used in an architecture that integrates common geographic and atmospheric data.

Blodgett, David L.; Booth, Nathaniel L.; Kunicki, Thomas C.; Walker, Jordan I.; Lucido, Jessica M.

2012-01-01

316

Food consumption patterns in the Waterloo Region, Ontario, Canada: a cross-sectional telephone survey  

PubMed Central

Background The demographics and lifestyles of Canadians are changing, thereby influencing food choices and food preparation in the home. Although different dietary practices are associated with increased risk of foodborne illness, our ability to evaluate food consumption trends and assess risks associated with foodborne illness is limited by lack of data on current eating habits and consumer food safety practices. The objective of this study was to describe, for the first time, the food consumption patterns in a Canadian-based population from a food safety perspective, in order to establish baseline data on actual food intake of individuals. Method A cross-sectional telephone survey of 2,332 randomly selected residents of Waterloo Region, Ontario, Canada (C-EnterNet pilot site) was conducted between November 2005 and March 2006. Food intake was assessed using a 7-day dietary recall method. Results Certain food items were consumed more than others among the same food groups, and consumption of many food items varied by gender and age. Specific foods considered high-risk for the transmission of certain enteric pathogens were significantly more likely to be consumed by males (i.e. unpasteurized juice, bean sprouts, and undercooked meat) and elderly individuals (i.e. undercooked eggs). The majority of households prepared and consumed most meals at home, allocating an average of 44 minutes to prepare a meal. Conclusion Baseline data on actual food intake is useful to public health professionals and food safety risk assessors for developing communication messages to consumers and in foodborne outbreak investigations. PMID:18950509

Nesbitt, Andrea; Majowicz, Shannon; Finley, Rita; Pollari, Frank; Pintar, Katarina; Marshall, Barbara; Cook, Angela; Sargeant, Jan; Wilson, Jeff; Ribble, Carl; Knowles, Lewinda

2008-01-01

317

IYPE in Canada  

NASA Astrophysics Data System (ADS)

The Canadian National Committee picked five of the ten IYPE themes for emphasis in Canada - Water, Hazards, Energy, Resources and Environment. They are summarized in the acronym WHERE - WHERE on Earth, WHERE in Canada. Our committee raised funds from industry, with some generous support from The Geological Survey of Canada. Funds were used for publishing Four Billion Years and Counting, a book on Canadian geology designed for the general public. It will be useful to educators who can download many of the illustrations and images for classroom support. Recognizing the looming shortage of Geoscientists, we designed a new careers website to help attract young people to the Earth sciences. It can be seen on our website, www.EarthsciencesCanada.com. The website will be updated regularly. The WHERE Challenge was a national contest for children aged 10 to 14. They were asked to select an object, often something from their household, identify at least one non-renewable resource used to make the object, and submit an entry describing the object, the resources within it, and WHERE they came from. We received entries from more than 1000 students Some of the winning entries are posted on our website. We developed a partnership with Parks Canada called Egoists, which is a series of pamphlets on iconic views within the parks explaining the Earth science behind the views. We also supported the celebration of the 100th anniversary of the discovery of the Burgess Shale by providing funding for the publication of a field guide. At the end of the year all programs will transfer to the Canadian Federation of Earth Sciences. The WHERE Challenge will be repeated in 2010. It, plus our book and careers website will continue our outreach activities.

Boyd, J.; Nowlan, G.

2009-12-01

318

Geological assessing of urban environments with a systematic mapping survey: The 1:5000 urban geological map of Catalonia  

Microsoft Academic Search

The ground features of urban areas and the geologic processes that operate on them are, in general, strongly altered from their natural original condition as a result of anthropogenic activities. Assessing the stability of the ground, the flooding areas, and, the health risk as a consequence of soil pollution, are, among others, fundamental topics of urban areas that require a

Miquel Vil; Roser Pi; Jordi Cirs; Ana de Paz; Xavier Berstegui

2010-01-01

319

U.S. Geological Survey National Earthquake Hazards Reduction Program DIGITAL COMPILATION OF THRUST AND REVERSE FAULT DATA FOR THE NORTHERN CALIFORNIA MAP DATABASE: COLLABORATIVE RESEARCH WITH WILLIAM LETTIS & ASSOCIATES, INC., AND THE U.S. GEOLOGICAL SURVEY  

Microsoft Academic Search

This study presents a new digital map compilation of Quaternary thrust faults and folds in the eastern San Francisco Bay region. The work described herein is part of a collaborative effort between private and academic geologists and U.S. Geological Survey (USGS) to construct a Quaternary fault map and database for the San Francisco Bay area, with a target publication date

Jeff Unruh; Sean Sundermann

320

New U.S. Geological Survey Method for the Assessment of Reserve Growth  

USGS Publications Warehouse

Reserve growth is defined as the estimated increases in quantities of crude oil, natural gas, and natural gas liquids that have the potential to be added to remaining reserves in discovered accumulations through extension, revision, improved recovery efficiency, and additions of new pools or reservoirs. A new U.S. Geological Survey method was developed to assess the reserve-growth potential of technically recoverable crude oil and natural gas to be added to reserves under proven technology currently in practice within the trend or play, or which reasonably can be extrapolated from geologically similar trends or plays. This method currently is in use to assess potential additions to reserves in discovered fields of the United States. The new approach involves (1) individual analysis of selected large accumulations that contribute most to reserve growth, and (2) conventional statistical modeling of reserve growth in remaining accumulations. This report will focus on the individual accumulation analysis. In the past, the U.S. Geological Survey estimated reserve growth by statistical methods using historical recoverable-quantity data. Those statistical methods were based on growth rates averaged by the number of years since accumulation discovery. Accumulations in mature petroleum provinces with volumetrically significant reserve growth, however, bias statistical models of the data; therefore, accumulations with significant reserve growth are best analyzed separately from those with less significant reserve growth. Large (greater than 500 million barrels) and older (with respect to year of discovery) oil accumulations increase in size at greater rates late in their development history in contrast to more recently discovered accumulations that achieve most growth early in their development history. Such differences greatly affect the statistical methods commonly used to forecast reserve growth. The individual accumulation-analysis method involves estimating the in-place petroleum quantity and its uncertainty, as well as the estimated (forecasted) recoverability and its respective uncertainty. These variables are assigned probabilistic distributions and are combined statistically to provide probabilistic estimates of ultimate recoverable quantities. Cumulative production and remaining reserves are then subtracted from the estimated ultimate recoverable quantities to provide potential reserve growth. In practice, results of the two methods are aggregated to various scales, the highest of which includes an entire country or the world total. The aggregated results are reported along with the statistically appropriate uncertainties.

Klett, Timothy R.; Attanasi, Emil D.; Charpentier, Ronald R.; Cook, Troy A.; Freeman, Philip A.; Gautier, Donald L.; Le, Phuong A.; Ryder, Robert T.; Schenk, Christopher J.; Tennyson, Marilyn E.; Verma, Mahendra K.

2011-01-01

321

New Studies Initiated by the U.S. Geological Survey Effects of Nutrient Enrichment on Stream Ecosystems  

Microsoft Academic Search

In 2001, the U.S. Geological Surveys National Water-Quality Assessment (NAWQA) Program began an intensive study of nutrient enrichmentelevated concentrations of nitrogen and phosphorus in streams in five agricultural basins across the Nation (see map, p. 2). This study is providing nationally consistent and comparable data and analyses of nutrient conditions, including how these conditions vary as a result of natural

Mark D. Munn; Pixie A. Hamilton

2003-01-01

322

Eighth Annual Report of the United States Geological Survey to the Secretary of the Interior, 1886-1887: Part 1  

USGS Publications Warehouse

The Geological Survey was organized, with Mr. Clarence King as Director, in March, 1879. In March, 1881, Mr. King resigned and the present Director was appointed. From its organization to the present time the Survey has steadily grown as Congress has enlarged its functions and increased its appropriations. During this time the scientific organization has gradually developed to the condition set forth in the last annual report. It seems advisable now to describe fully the business organization and methods of the Survey, which has heretofore been done only in part. Under the act of July 7, 1884, a joint commission was created to consider the organization of certain scientific bureaus. In the volume of testimony prepared by that commission the business operations of the Geological Survey were in part set forth; but this partial presentation was unsystematic, the facts recorded being elicited in irregular order by interrogatories arising in the course of a long investigation. It is designed here to make a more thorough exposition oi the subject. The business system of the Geological Survey is subordinate to the scientific organization and its character is dependent thereon. The development of the divisions of the Survey whose function is the transaction of business has therefore followed the development of the purely scientific divisions, and overy modification of plan for the scientific work may carry with it some modification of the business organization.

Powell, J. W.

1889-01-01

323

U.S. Geological Survey probabilistic methodology for oil and gas resource appraisal of the United States  

USGS Publications Warehouse

Probabilistic methodology used by the U.S. Geological Survey is described for estimating the quantity of undiscovered recoverable conventional resources of oil and gas in the United States. A judgmental probability distribution of the "quantity of resource" and its properties is determined for a geologic province or basin. From this distribution, point and interval estimates of the quantity of undiscovered resource are obtained. Distributions and their properties are established for each of the following resources: (1) oil and nonassociated gas from estimates of the probability of the resource being present and the conditional probability distribution of the quantity of resource given that the resource is present, (2) associated-dissolved gas from its corresponding oil distribution, (3) total gas, (4) oil and total gas in two or more provinces. Computer graphics routines are illustrated with examples from the U.S. Geological Survey Circular 860. ?? 1984 Plenum Publishing Corporation.

Crovelli, R.A.

1984-01-01

324

The US Agency for International Development--Los Alamos National Laboratory--US Geological Survey Central American Geothermal Resources Program  

Microsoft Academic Search

Interdisciplinary field teams for this energy assistance program consisted of staff from Los Alamos, the US Geological Survey, the country of the study, and consultants; this provided the wide range of expertise necessary for geothermal resource evaluation. The program was successful largely because of the field teams dedication to their goals of verifying new geothermal resources and of sharing exploration

G. Heiken; S. Goff; K. Janik

1992-01-01

325

Impacts to Coastal Beaches and BarriersU.S. Department of the Interior U.S. Geological Survey  

E-print Network

The Nation's coast is fringed by beaches, dunes, barrier islands, wetlands, and bluffs. These natural coastalImpacts to Coastal Beaches and BarriersU.S. Department of the Interior U.S. Geological Survey Fact Sheet 2013­3090 October 2013 Start with Science to Build Safer Communities Hurricane Sandy Science Plan--Coastal

Fleskes, Joe

326

U.S. GEOLOGICAL SURVEY --REDUCING RISK FROM VOLCANO HAZARDS Glacier Peak --History and Hazards of a Cascade Volcano  

E-print Network

U.S. GEOLOGICAL SURVEY -- REDUCING RISK FROM VOLCANO HAZARDS Glacier Peak -- History and Hazards of a Cascade Volcano Glacier Peak lies in Washington State's North Cascade Mountains, in the heart-capped volcanoes of Washington State have long been recognized by Native Americans in their language and legends

Torgersen, Christian

327

U.S. GEOLOGICAL SURVEY--REDUCING THE RISK FROM VOLCANO HAZARDS Since about 1700, when written records began  

E-print Network

U.S. GEOLOGICAL SURVEY--REDUCING THE RISK FROM VOLCANO HAZARDS Since about 1700, when written records began to be kept for Alaska, more than 230 eruptions have been reported from volcanoes there. Most Peninsula, and Cook Inlet. In 1988, the Alaska Volcano Observa- tory (AVO)--a cooperative effort of the U

Torgersen, Christian

328

3.2.3 Thermocouple Psychrometry BRIAN J. ANDRASKI, U.S. Geological Survey, Carson City, Nevada  

E-print Network

3.2.3 Thermocouple Psychrometry BRIAN J. ANDRASKI, U.S. Geological Survey, Carson City, Nevada BRIDGET R. SCANLON, University of Texas, Austin, Texas 3.2.3.1 Principles Thermocouple psychrometry. Thermocouple psychrometry is often used as a collective term for both psy- chrometric (wet-bulb temperature

Scanlon, Bridget R.

329

Overview of Rare Earth Element Investigations in Acid Waters of U. S. Geological Survey Abandoned Mine Lands Watersheds  

Microsoft Academic Search

The geochemistry of rare earth element (REE) variations in acid waters is being studied as part of the U. S. Geological Survey Abandoned Mine Lands Initiative in two pilot watersheds, upper Animas, Colorado and Boulder, Montana. The following objectives are under investigation: (1) comparison of acid mine waters and naturally acidic springs, (2) determination of whether the dominant control on

Philip L. Verplanck; D. Kirk Nordstrom; Howard E. Taylor

330

Steps toward Grid-based geological survey: Suggestions for a systems framework of models, ontologies, and workflows  

Microsoft Academic Search

Consideration of an explicit systems framework for geological survey information is timely, to assist in developing and maintaining an integrated and coherent view of regional geoscience in a Grid-based context. A framework based on a solid Earth systems model is tentatively proposed in this paper. The developing advanced infrastructure of information and communications technology, the so-called Grid, points to more

T. V. Loudon; J. L. Laxton

2007-01-01

331

U.S. Geological Survey Natural Hazards Science Strategy--Promoting the Safety, Security, and Economic Well-Being  

E-print Network

, Michael L. Plunkett, Craig S. Weaver, Anne Wein, and Suzanne C. Perry Circular 1383­F U.S. Department.G., Plunkett, M.L., Weaver, C.S., Wein, Anne, and Perry, S.C., 2012, U.S. Geological Survey natural hazards

Torgersen, Christian

332

A quality-assurance plan for district ground-water activities of the U.S. Geological Survey  

USGS Publications Warehouse

As the Nation's principal earth-science information agency, the U.S. Geological Survey (USGS) is depended upon to collect data of the highest quality. This document provides the framework for collecting, analyzing and reporting ground-water data that are quality assured and quality controlled.

Brunett, J. O.; Barber, N. L.; Burns, A. W.; Fogelman, R. P.; Gillies, D. C.; Lidwin, R. A.; Mack, T. J.

1997-01-01

333

SIX MORE QUASARS AT REDSHIFT 6 DISCOVERED BY THE CANADA-FRANCE HIGH-z QUASAR SURVEY  

SciTech Connect

We present imaging and spectroscopic observations for six quasars at z {>=} 5.9 discovered by the Canada-France High-z Quasar Survey (CFHQS). The CFHQS contains subsurveys with a range of flux and area combinations to sample a wide range of quasar luminosities at z {approx} 6. The new quasars have luminosities 10-75 times lower than the most luminous Sloan Digital Sky Survey quasars at this redshift. The least luminous quasar, CFHQS J0216-0455 at z = 6.01, has absolute magnitude M {sub 1450} = -22.21, well below the likely break in the luminosity function. This quasar is not detected in a deep XMM-Newton survey showing that optical selection is still a very efficient tool for finding high-redshift quasars.

Willott, Chris J.; Crampton, David; Hutchings, John B.; Schade, David [Herzberg Institute of Astrophysics, National Research Council, 5071 West Saanich Rd., Victoria, BC V9E 2E7 (Canada); Delorme, Philippe; Delfosse, Xavier; Forveille, Thierry [Laboratoire d'Astrophysique, Observatoire de Grenoble, Universite J. Fourier, BP 53, F-38041 Grenoble, Cedex 9 (France); Reyle, Celine [Institut Utinam, Observatoire de Besancon, Universite de Franche-Comte, BP1615, 25010 Besancon Cedex (France); Albert, Loic [Canada-France-Hawaii Telescope Corporation, 65-1238 Mamalahoa Highway, Kamuela, HI 96743 (United States); Bergeron, Jacqueline; Omont, Alain [Institut d'Astrophysique de Paris, CNRS and Universite Pierre et Marie Curie, 98bis Boulevard Arago, F-75014 Paris (France); McLure, Ross J. [Scottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ (United Kingdom)], E-mail: chris.willott@nrc.ca

2009-03-15

334

U.S. Geological Survey Field Leach Test for Assessing Water Reactivity and Leaching Potential of Mine Wastes, Soils, and Other Geologic and Environmental Materials  

USGS Publications Warehouse

The U. S. Geological Survey (USGS) has developed a fast (5-minute), effective, simple, and cost-effective leach test that can be used to simulate the reactions that occur when materials are leached by water. The USGS Field Leach Test has been used to predict, assess, and characterize the geochemical interactions between water and a broad variety of geologic and environmental matrices. Examples of some of the samples leached include metal mine wastes, various types of dusts, biosolids (processed sewage sludge), flood and wetland sediments, volcanic ash, forest-fire burned soils, and many other diverse matrices. The Field Leach Test has been an integral part of these investigations and has demonstrated its value as a geochemical characterization tool. It has enabled investigators to identify which constituents are water reactive, soluble, mobilized, and made bioaccessible because of leaching by water, and to understand potential impacts of these interactions on the surrounding environment.

Hageman, Philip L.

2007-01-01

335

Science strategy for Core Science Systems in the U.S. Geological Survey, 2013-2023  

USGS Publications Warehouse

Core Science Systems is a new mission of the U.S. Geological Survey (USGS) that grew out of the 2007 Science Strategy, "Facing Tomorrow's Challenges: U.S. Geological Survey Science in the Decade 2007-2017." This report describes the vision for this USGS mission and outlines a strategy for Core Science Systems to facilitate integrated characterization and understanding of the complex earth system. The vision and suggested actions are bold and far-reaching, describing a conceptual model and framework to enhance the ability of USGS to bring its core strengths to bear on pressing societal problems through data integration and scientific synthesis across the breadth of science. The context of this report is inspired by a direction set forth in the 2007 Science Strategy. Specifically, ecosystem-based approaches provide the underpinnings for essentially all science themes that define the USGS. Every point on earth falls within a specific ecosystem where data, other information assets, and the expertise of USGS and its many partners can be employed to quantitatively understand how that ecosystem functions and how it responds to natural and anthropogenic disturbances. Every benefit society obtains from the planet - food, water, raw materials to build infrastructure, homes and automobiles, fuel to heat homes and cities, and many others, are derived from or effect ecosystems. The vision for Core Science Systems builds on core strengths of the USGS in characterizing and understanding complex earth and biological systems through research, modeling, mapping, and the production of high quality data on the nation's natural resource infrastructure. Together, these research activities provide a foundation for ecosystem-based approaches through geologic mapping, topographic mapping, and biodiversity mapping. The vision describes a framework founded on these core mapping strengths that makes it easier for USGS scientists to discover critical information, share and publish results, and identify potential collaborations that transcend all USGS missions. The framework is designed to improve the efficiency of scientific work within USGS by establishing a means to preserve and recall data for future applications, organizing existing scientific knowledge and data to facilitate new use of older information, and establishing a future workflow that naturally integrates new data, applications, and other science products to make it easier and more efficient to conduct interdisciplinary research over time. Given the increasing need for integrated data and interdisciplinary approaches to solve modern problems, leadership by the Core Science Systems mission will facilitate problem solving by all USGS missions in ways not formerly possible. The report lays out a strategy to achieve this vision through three goals with accompanying objectives and actions. The first goal builds on and enhances the strengths of the Core Science Systems mission in characterizing and understanding the earth system from the geologic framework to the topographic characteristics of the land surface and biodiversity across the nation. The second goal enhances and develops new strengths in computer and information science to make it easier for USGS scientists to discover data and models, share and publish results, and discover connections between scientific information and knowledge. The third goal brings additional focus to research and development methods to address complex issues affecting society that require integration of knowledge and new methods for synthesizing scientific information. Collectively, the report lays out a strategy to create a seamless connection between all USGS activities to accelerate and make USGS science more efficient by fully integrating disciplinary expertise within a new and evolving science paradigm for a changing world in the 21st century.

Bristol, R. Sky; Euliss, Ned H.; Booth, Nathaniel L.; Burkardt, Nina; Diffendorfer, Jay E.; Gesch, Dean B.; McCallum, Brian E.; Miller, David M.; Morman, Suzette A.; Poore, Barbara S.; Signell, Richard P.; Viger, Roland J.

2012-01-01

336

Quaternary geologic map of the Hudson River 4 degree x 6 degree quadrangle, United States and Canada  

USGS Publications Warehouse

The Quaternary Geologic Map of the Hudson River 4? x 6? Quadrangle was mapped as part of the Quaternary Geologic Atlas of the United States. The atlas was begun as an effort to depict the areal distribution of surficial geologic deposits and other materials that accumulated or formed during the past 2+ million years, the period that includes all activities of the human species. These materials are at the surface of the earth. They make up the 'ground' on which we walk, the 'dirt' in which we dig foundations, and the 'soil' in which we grow crops. Most of our human activity is related in one way or another to these surface materials that are referred to collectively by many geologists as regolith, the mantle of fragmental and generally unconsolidated material that overlies the bedrock foundation of the continent. The maps were compiled at 1:1,000,000 scale.

State and province compilations by Fullerton, David S.; Sevon, William D.; Muller, Ernest H.; Judson, Sheldon; Black, Robert F.; Wagner, Phillip W.; Hartshorn, Joseph H.; Chapman, William F.; Cowan, William D.; edited and integrated by Fullerton, David S.

1992-01-01

337

Bibliography of Water-Resources Investigations reports published by the U.S. Geological Survey from 1971 through 1982  

USGS Publications Warehouse

This report contains a cross-referenced listing of 971 Water-Resources Investigations reports (WRIR's) published by the U.S. Geological Survey from 1971 through 1982. The reports are listed by WRIR number. Most requests for WRIR 's generally are by WRIR number; however, the Survey 's annual catalog, ' Publications of the U.S. Geological Survey (year), ' indexes WRIR 's under the National Technical Information Service number, with the WRIR appearing only at the end of the citation within the index. Additionally, a few WRIR 's have been listed in the index without any reference to their WRIR number; and some WRIR 's appeared only in the discontinued Water Resources Investigations folder series. This report lists WRIR 's in sequential order to assist the readership in locating a particular publication. (USGS)

Edmonds, Sharon A.

1989-01-01

338

Aerial surveys of Greater White-fronted Geese, Canada Geese, and Tundra Swans on the mainland of the Inuvialuit Settlement Region, Western Canadian Arctic, 1989-1993  

Microsoft Academic Search

From 1989 to 1993, we carried out helicopter tran- sect surveys to determine the numbers, distribution, and productivity of Greater White-fronted Geese Anser albifrons, Canada Geese Branta canadensis, and Tundra Swans Cygnus columbianus on the mainland of the Inuvialuit Settlement Region of the Western Canadian Arctic. The estimated size of the adult populations in the 26 605-km 2 survey area

James E. Hines; Myra O. Wiebe Robertson; Maureen F. Kay; Susan E. Westover

339

Aquifer descriptions from the U.S. Geological Survey Regional Aquifer-System Analysis Program, 1978-1993  

USGS Publications Warehouse

The Regional Aquifer-System Analysis Program of the U.S. Geological Survey began in 1978. The overall purpose of this program is to define the geologic, hydrologic, and geochemical framework of the Nation's most important aquifers and aquifer systems. This report summarizes the aquifer or aquifer system name, geographic area, rock units, equivalent names, lithology, thickness, hydrologic characteristics, water quality, water use, and references for 157 aquifers in 23 areas of the United States. A .zip file containing the aquifer data and data search programs (in compressed ASCII format) is included in the report.

Davidson, Claire B.; Doherty, Helen

1994-01-01

340

Quality-assurance plan for groundwater activities, U.S. Geological Survey, Washington Water Science Center  

USGS Publications Warehouse

This report documents the standard procedures, policies, and field methods used by the U.S. Geological Surveys (USGS) Washington Water Science Center staff for activities related to the collection, processing, analysis, storage, and publication of groundwater data. This groundwater quality-assurance plan changes through time to accommodate new methods and requirements developed by the Washington Water Science Center and the USGS Office of Groundwater. The plan is based largely on requirements and guidelines provided by the USGS Office of Groundwater, or the USGS Water Mission Area. Regular updates to this plan represent an integral part of the quality-assurance process. Because numerous policy memoranda have been issued by the Office of Groundwater since the previous groundwater quality assurance plan was written, this report is a substantial revision of the previous report, supplants it, and contains significant additional policies not covered in the previous report. This updated plan includes information related to the organization and responsibilities of USGS Washington Water Science Center staff, training, safety, project proposal development, project review procedures, data collection activities, data processing activities, report review procedures, and archiving of field data and interpretative information pertaining to groundwater flow models, borehole aquifer tests, and aquifer tests. Important updates from the previous groundwater quality assurance plan include: (1) procedures for documenting and archiving of groundwater flow models; (2) revisions to procedures and policies for the creation of sites in the Groundwater Site Inventory database; (3) adoption of new water-level forms to be used within the USGS Washington Water Science Center; (4) procedures for future creation of borehole geophysics, surface geophysics, and aquifer-test archives; and (5) use of the USGS Multi Optional Network Key Entry System software for entry of routine water-level data collected as part of long-term water-level monitoring networks.

Kozar, Mark D.; Kahle, Sue C.

2013-01-01

341

An evaluation of the U.S. Geological Survey World Petroleum Assessment 2000  

USGS Publications Warehouse

This study compares the additions to conventional crude oil and natural gas reserves as reported from January 1996 to December 2003 with the estimated undiscovered and reserve-growth volumes assessed in the U.S. Geological Survey World Petroleum Assessment 2000, which used data current through 1995. Approximately 28% of the estimated additions to oil reserves by reserve growth and approximately 11% of the estimated undiscovered oil volumes were realized in the 8 yr since the assessment (27% of the time frame for the assessment). Slightly more than half of the estimated additions to gas reserves by reserve growth and approximately 10% of the estimated undiscovered gas volumes were realized. Between 1995 and 2003, growth of oil reserves in previously discovered fields exceeded new-field discoveries as a source of global additions to reserves of conventional oil by a ratio of 3:1. The greatest amount of reserve growth for crude oil occurred in the Middle East and North Africa, whereas the greatest contribution from new-field discoveries occurred in sub-Saharan Africa. The greatest amount of reserve growth for natural gas occurred in the Middle East and North Africa, whereas the greatest contribution from new-field discoveries occurred in the Asia Pacific region. On an energy-equivalent basis, volumes of new gas-field discoveries exceeded new oil-field discoveries. Copyright ?? 2005. The American Association of Petroleum Geologists. All rights reserved.

Klett, T.R.; Gautier, D.L.; Ahlbrandt, T.S.

2005-01-01

342

Sudbury project (University of Muenster-Ontario Geological Survey): Summary of results - an updated impact model  

NASA Astrophysics Data System (ADS)

In 1984 the Ontario Geological Survey initiated a research project on the Sudbury structure (SS) in cooperation with the University of Muenster. The project included field mapping (1984-1989) and petrographic, chemical, and isotope analyses of the major stratigraphic units of the SS. Four diploma theses and four doctoral theses were performed during the project (1984-1992). Specific results of the various investigations are reported. Selected areas of the SS were mapped and sampled: Footwall rocks; Footwall breccia and parts of the sublayer and lower section of the Sudbury Igneous Complex (SIC); Onaping Formation and the upper section of the SIC; and Sudbury breccia and adjacent Footwall rocks along extended profiles up to 55 km from the SIC. All these stratigraphic units of the SS were studied in substantial detail by previous workers. The most important characteristic of the previous research is that it was based either on a volcanic model or on a mixed volcanic-impact model for the origin of the SS. The present project was clearly directed toward a test of the impact origin of the SS without invoking an endogenic component. In general, our results confirm the most widely accepted stratigraphic division of the SS. However, our interpretation of some of the major stratigraphic units is different from most views expressed. The stratigraphy of the SS and its new interpretation is given as a basis for discussion.

Avermann, M.; Bischoff, L.; Brockmeyer, P.; Buhl, D.; Deutsch, A.; Dressler, B. O.; Lakomy, R.; Mueller-Mohr, V.; Stoeffler, D.

1992-12-01

343

Assessing Gaps in the U.S. Geological Survey Streamgage Network  

NASA Astrophysics Data System (ADS)

Streamgages are widely used for a variety of purposes ranging from operational support of water management facilities to flood monitoring to scientific analysis of streamflow and ecological processes. The U.S. Geological Survey (USGS) operates the largest streamgage network in the U.S., with nearly 8,000 continuous-record streamgages currently in operation. This study assesses the spatial and temporal extent of the network, with particular attention to the applicability of the network for estimating streamflows and streamflow statistics at ungaged locations. There are clear regional differences in the availability of streamgage information and in the transferability of that information to ungaged locations. In particular, arid and semi-arid regions tend to have the poorest network coverage, and the high interannual variability in streamflow in these regions leads to large uncertainty in streamflow statistics calculated at gaged locations using short records. USGS streamgages are also particularly sparse in Alaska and Hawaii. Hydrologic information can be transferred from streamgages to nearby ungaged locations if there is sufficient similarity between the gaged watersheds and the ungaged watersheds. The correlation between streamflow records at existing streamgages was used to assess the transferability of streamflow information. The highest correlations were found in mountainous areas of the U.S., while the lowest correlations were found in the central U.S. and coastal areas of the southeastern U.S.

Kiang, J.; Archfield, S. A.; Stewart, D.; Eng, K.

2013-12-01

344

Water resources program of the U.S. Geological Survey related to agriculture in Louisiana  

USGS Publications Warehouse

Surveillance activities of the U.S. Geological Survey Louisiana District include long-term, hydrologic-data-collection sites that serve a current-purpose, management function and (or) that furnish a data base for interpretative studies. The proposed program for 1982 includes a network of 69 surface-water data sites (continuous gaging stations), 250 flood-data sites (crest-stage stations), 679 ground-water wells (water-level observation and water-quality monitor wells), and 138 water-quality sites. The geographic distribution of the data sites is shown in the report. Interpretive studies have objectives that are oriented toward a particular geographic area , to a particular set of hydrologic phenomena, or to obtain information for use in solving specific problems. Current studies of interest to agriculture include the following: (1) Flood hydraulics and hydrology, (2) Low-flow or base-flow of streams in Louisiana, (3) Hydrologic studies in southwestern Louisiana, (4) Hydrologic impacts of surface mining in northern Louisiana, (5) Sparta aquifer study, and (6) Limnology of freshwater lakes. A network of partial record sites is also maintained to monitor specific flows. Peak stages (crest stage) are only recorded at sites where flood information is of interest. At other sites, only the low-flow or base-flow recession is obtained for use in determining relations between ground water and surface water, to assess water supply, and for effluent studies. (USGS)

Huntzinger, T.L.

1982-01-01

345

Cost effectiveness of the US Geological Survey's stream-gaging program in New York  

USGS Publications Warehouse

The U.S. Geological Survey conducted a 5-year nationwide analysis to define and document the most cost effective means of obtaining streamflow data. This report describes the stream gaging network in New York and documents the cost effectiveness of its operation; it also identifies data uses and funding sources for the 174 continuous-record stream gages currently operated (1983). Those gages as well as 189 crest-stage, stage-only, and groundwater gages are operated with a budget of $1.068 million. One gaging station was identified as having insufficient reason for continuous operation and was converted to a crest-stage gage. Current operation of the 363-station program requires a budget of $1.068 million/yr. The average standard error of estimation of continuous streamflow data is 13.4%. Results indicate that this degree of accuracy could be maintained with a budget of approximately $1.006 million if the gaging resources were redistributed among the gages. The average standard error for 174 stations was calculated for five hypothetical budgets. A minimum budget of $970,000 would be needed to operated the 363-gage program; a budget less than this does not permit proper servicing and maintenance of the gages and recorders. Under the restrictions of a minimum budget, the average standard error would be 16.0%. The maximum budget analyzed was $1.2 million, which would decrease the average standard error to 9.4%. (Author 's abstract)

Wolcott, S.W.; Gannon, W.B.; Johnston, W.H.

1986-01-01

346

Performance Audit of the U.S. Geological Survey, Energy Resource Program Inorganic Geochemistry Laboratory  

USGS Publications Warehouse

A performance audit of the U.S. Geological Survey (USGS), Energy Resource Program (ERP) Inorganic Geochemistry Laboratory (IGL) was conducted between August, 2003 and October, 2005. The goals were to ensure that a high level of analytical performance was maintained and identify any areas that could be enhanced. The audit was subdivided into three phases. Phase 1 was a preliminary assessment of current performance based on recent performance on CANSPEX samples. IGL performance was also compared to laboratories world-wide with similar scope. Phase 2 consisted of the implementation of the recommended changes made in Phase 1. Phase 3 of the audit consisted of a reassessment effort to evaluate the effectiveness of the recommendations made in the Phase 1 and an on-site audit of the laboratory facilities. Phases 1 and 3 required summary reports that are included in Appendices A and B of this report. The audit found that the IGL was one of the top two laboratories compared for trace element analyses. Several recommendations to enhance performance on major and minor elemental parameters were made and implemented. Demonstrated performance improvements as a result of the recommended changes were documented. Several initiatives to sustain the performance improvements gained from the audit have been implemented.

Luppens, James A.; Janke, Louis G.; McCord, Jamey D.; Bullock, John H.; Brazeau, Lisa; Affronter, Ronald H.

2007-01-01

347

A method for mapping corn using the US Geological Survey 1992 National Land Cover Dataset  

USGS Publications Warehouse

Long-term exposure to elevated nitrate levels in community drinking water supplies has been associated with an elevated risk of several cancers including non-Hodgkin's lymphoma, colon cancer, and bladder cancer. To estimate human exposure to nitrate, specific crop type information is needed as fertilizer application rates vary widely by crop type. Corn requires the highest application of nitrogen fertilizer of crops grown in the Midwest US. We developed a method to refine the US Geological Survey National Land Cover Dataset (NLCD) (including map and original Landsat images) to distinguish corn from other crops. Overall average agreement between the resulting corn and other row crops class and ground reference data was 0.79 kappa coefficient with individual Landsat images ranging from 0.46 to 0.93 kappa. The highest accuracies occurred in Regions where corn was the single dominant crop (greater than 80.0%) and the crop vegetation conditions at the time of image acquisition were optimum for separation of corn from all other crops. Factors that resulted in lower accuracies included the accuracy of the NLCD map, accuracy of corn areal estimates, crop mixture, crop condition at the time of Landsat overpass, and Landsat scene anomalies. ?? 2006 Elsevier B.V. All rights reserved.

Maxwell, S.K.; Nuckols, J.R.; Ward, M.H.

2006-01-01

348

A summary of the U.S. Geological Survey National Water-Quality Assessment program  

USGS Publications Warehouse

Beginning in 1986, the Congress appropriated funds for the U.S. Geological Survey to test and refine concepts for a National Water Quality Assessment Program. At present, the program is in a pilot phase with field studies occurring in seven areas around the Nation. In 1990, a committee of the National Academy of Sciences will complete an evaluation of the design and potential utility of the program. A decision about moving to full-scale implementation will be made upon completion of this evaluation. The program is intended to address a wide range of national water quality issues that include chemical contamination, acidification, eutrophication, salinity, sedimentation, and sanitary quality. The goals of the program are to: (1) provide nationally consistent descriptions of current water quality conditions for a large part of the Nation 's water resources; (2) define long-term trends (or lack of trends) in water quality; and (3) identify and describe the relations of both current conditions and trends in water quality to natural and human factors. This information will be provided to water managers, policy makers, and the public to provide an improved scientific basis for evaluating the effectiveness of water quality management programs and for predicting the likely effects of contemplated changes in land- and water-management practices. (USGS)

Hirsch, R. M.; Alley, W. M.; Wilber, W. G.

1988-01-01

349

Operation of U.S. Geological Survey unmanned digital magnetic observatories  

USGS Publications Warehouse

The precision and continuity of data recorded by unmanned digital magnetic observatories depend on the type of data acquisition equipment used and operating procedures employed. Three generations of observatory systems used by the U.S. Geological Survey are described. A table listing the frequency of component failures in the current observatory system has been compiled for a 54-month period of operation. The cause of component failure was generally mechanical or due to lightning. The average percentage data loss per month for 13 observatories operating a combined total of 637 months was 9%. Frequency distributions of data loss intervals show the highest frequency of occurrence to be intervals of less than 1 h. Installation of the third generation system will begin in 1988. The configuration of the third generation observatory system will eliminate most of the mechanical problems, and its components should be less susceptible to lightning. A quasi-absolute coil-proton system will be added to obtain baseline control for component variation data twice daily. Observatory data, diagnostics, and magnetic activity indices will be collected at 12-min intervals via satellite at Golden, Colorado. An improvement in the quality and continuity of data obtained with the new system is expected. ?? 1990.

Wilson, L.R.

1990-01-01

350

Price current-meter standard rating development by the U.S. geological survey  

USGS Publications Warehouse

The U.S. Geological Survey has developed new standard rating tables for use with Price type AA and pygmy current meters, which are employed to measure streamflow velocity. Current-meter calibration data, consisting of the rates of rotation of meters at several different constant water velocities, have shown that the original rating tables are no longer representative of the average responsiveness of newly purchased meters or meters in the field. The new rating tables are based on linear regression equations that are weighted to reflect the population mix of current meters in the field and weighted inversely to the variability of the data at each calibration velocity. For calibration velocities of 0.3 m/s and faster, at which most streamflow measurements are made, the new AA-rating predicts the true velocities within 1.5% and the new pygmy-meter rating within 2.0% for more than 95% of the meters. At calibration velocities, the new AA-meter rating is up to 1.4% different from the original rating, and the new pygmy-meter rating is up to 1.6% different.

Hubbard, E.F.; Schwarz, G.E.; Thibodeaux, K.G.; Turcios, L.M.

2001-01-01

351

Sudbury project (University of Muenster-Ontario Geological Survey): Summary of results - an updated impact model  

NASA Technical Reports Server (NTRS)

In 1984 the Ontario Geological Survey initiated a research project on the Sudbury structure (SS) in cooperation with the University of Muenster. The project included field mapping (1984-1989) and petrographic, chemical, and isotope analyses of the major stratigraphic units of the SS. Four diploma theses and four doctoral theses were performed during the project (1984-1992). Specific results of the various investigations are reported. Selected areas of the SS were mapped and sampled: Footwall rocks; Footwall breccia and parts of the sublayer and lower section of the Sudbury Igneous Complex (SIC); Onaping Formation and the upper section of the SIC; and Sudbury breccia and adjacent Footwall rocks along extended profiles up to 55 km from the SIC. All these stratigraphic units of the SS were studied in substantial detail by previous workers. The most important characteristic of the previous research is that it was based either on a volcanic model or on a mixed volcanic-impact model for the origin of the SS. The present project was clearly directed toward a test of the impact origin of the SS without invoking an endogenic component. In general, our results confirm the most widely accepted stratigraphic division of the SS. However, our interpretation of some of the major stratigraphic units is different from most views expressed. The stratigraphy of the SS and its new interpretation is given as a basis for discussion.

Avermann, M.; Bischoff, L.; Brockmeyer, P.; Buhl, D.; Deutsch, A.; Dressler, B. O.; Lakomy, R.; Mueller-Mohr, V.; Stoeffler, D.

1992-01-01

352

Preliminary summary of the 1976 Atlantic Margin Coring Project of the U.S. Geological Survey  

USGS Publications Warehouse

The U.S. Geological Survey Atlantic Margin Coring Project, 1976, a 60-day expedition to obtain core samples by drilling beneath the floor of the Continental Shelf and Slope of the eastern United States, was carried out in July, August, and September 1976 aboard D/V GLOMAR CONCEPTION. The coring penetrated as much as 310 meters below the sea floor at 19 sites along the continental margin from Georgia to Georges Bank off New England in water depths ranging from 20 to 300 meters; 1,020 meters of material were recovered in 380 cores, ranging in age from Late Cretaceous to Holocene. One of the major findings was the discovery of relatively fresh water (salinities less than 3 parts per thousand) extending beneath the Continental Shelf as much as 60 nautical miles seaward from the New Jersey coast. Water of about 1 part per thousand salinity was found beneath the shelf more than 7 nautical miles off Ocean City, Maryland and Barnegat Inlet, New Jersey. Analyses for light hydrocarbons in the cores show the highest concentrations (as much as 412,000 ppm) at sites in water depth greater than 200 meters (the shelf-slope break), principally in Pleistocene sediments, although methane concentrations greater than 400,000 ppm also were found in Miocene sediments at one site near the shelf edge. (Woodard-USGS)

Hathaway, John Cummins; Schlee, J. J.; Poag, C. W.; Valentine, P. C.; Weed, E. G. A.; Bothner, M. H.; Kohout, F. A.; Manheim, F. T.; Schloam, R.; Miller, R. E.; Schultz, D. M.

1976-01-01

353

Evaluation of stream chemistry trends in US Geological Survey reference watersheds, 1970-2010.  

PubMed

The Hydrologic Benchmark Network (HBN) is a long-term monitoring program established by the US Geological Survey in the 1960s to track changes in the streamflow and stream chemistry in undeveloped watersheds across the USA. Trends in stream chemistry were tested at 15 HBN stations over two periods (1970-2010 and 1990-2010) using the parametric Load Estimator (LOADEST) model and the nonparametric seasonal Kendall test. Trends in annual streamflow and precipitation chemistry also were tested to help identify likely drivers of changes in stream chemistry. At stations in the northeastern USA, there were significant declines in stream sulfate, which were consistent with declines in sulfate deposition resulting from the reductions in SO? emissions mandated under the Clean Air Act Amendments. Sulfate declines in stream water were smaller than declines in deposition suggesting sulfate may be accumulating in watershed soils and thereby delaying the stream response to improvements in deposition. Trends in stream chemistry at stations in other part of the country generally were attributed to climate variability or land disturbance. Despite declines in sulfate deposition, increasing stream sulfate was observed at several stations and appeared to be linked to periods of drought or declining streamflow. Falling water tables might have enhanced oxidation of organic matter in wetlands or pyrite in mineralized bedrock thereby increasing sulfate export in surface water. Increasing sulfate and nitrate at a station in the western USA were attributed to release of soluble salts and nutrients from soils following a large wildfire in the watershed. PMID:23715732

Mast, M Alisa

2013-11-01

354

Analytical methods of the U.S. Geological Survey's New York District Water-Analysis Laboratory  

USGS Publications Warehouse

The New York District of the U.S. Geological Survey (USGS) in Troy, N.Y., operates a water-analysis laboratory for USGS watershed-research projects in the Northeast that require analyses of precipitation and of dilute surface water and soil water for major ions; it also provides analyses of certain chemical constituents in soils and soil gas samples. This report presents the methods for chemical analyses of water samples, soil-water samples, and soil-gas samples collected in wateshed-research projects. The introduction describes the general materials and technicques for eachmethod and explains the USGS quality-assurance program and data-management procedures; it also explains the use of cross reference to the three most commonly used methods manuals for analysis of dilute waters. The body of the report describes the analytical procedures for (1) solution analysis, (2) soil analysis, and (3) soil-gas analysis. The methods are presented in alphabetical order by constituent. The method for each constituent is preceded by (1) reference codes for pertinent sections of the three manuals mentioned above, (2) a list of the method's applications, and (3) a summary of the procedure. The methods section for each constitutent contains the following categories: instrumentation and equipment, sample preservation and storage, reagents and standards, analytical procedures, quality control, maintenance, interferences, safety considerations, and references. Sufficient information is presented for each method to allow the resulting data to be appropriately used in environmental samples.

Lawrence, Gregory B.; Lincoln, Tricia A.; Horan-Ross, Debra A.; Olson, Mark L.; Waldron, Laura A.

1995-01-01

355

U.S. Geological Survey Would Fare Well in Proposed Federal Budget  

NASA Astrophysics Data System (ADS)

The U.S. Geological Survey (USGS) is among the U.S. federal science agencies that would see significant funding increases if Congress approves the Obama administration's proposed budget for fiscal year (FY) 2011. The FY 2011 budget request would provide USGS with $1.13 billion, an increase of $21.6 million, or 1.9%, above the FY 2010 enacted level. In a time of budget austerity, to have the budget for a science agency like the USGS actually be at a level above 2010and 2010 was a pretty good budget year for the USGSis indeed a very good sign, USGS director Marcia McNutt said at a 1 February budget briefing. What we are seeing in the USGS budget is the reflection from both the president and the secretary [of the Department of the Interior, of which USGS is part] of their commitment that the problems that the nation is facing right now are problems to which science can help us find an answer, she said.

Showstack, Randy

2010-02-01

356

Survey of bottled drinking water sold in Canada. Part 2. Selected volatile organic compounds  

Microsoft Academic Search

Selected volatile organic compound (VOC) contaminants were determined in 182 samples of retail bottled waters purchased in Canada. Samples included spring water (86) packaged in containers of polyethylene or in smaller containers of transparent plastic or glass, mineral water (61) packaged only in transparent plastic or glass, and miscellaneous bottled waters (35). Analyses were performed by 3 laboratories, each using

B. D. Page; H. B. S. Conacher; J. Salminen

1993-01-01

357

Outside Government Science, Not a Single Tiny Bone to Cheer Us Up! The Geological Survey of Portugal (18571908), The Involvement of Common Men, and the Reaction of Civil Society to Geological Research  

Microsoft Academic Search

This paper focuses on the role played by the Geological Survey of Portugal in the emergence and consolidation of geology as a government science in the nineteenth century, within a general policy of control over territory. The period under consideration covers the directorates of its first leaders, Pereira da Costa (18091888) and the military engineers Carlos Ribeiro (18131882), and Nery

Ana Carneiro

2005-01-01

358

Factors Influencing Membership of U.S. Fish and Wildlife Service and U.S. Geological Survey Biologists in the American Fisheries Society  

Microsoft Academic Search

Membership in scientific societies is an avenue biologists may use to enhance their professional capabilities. We studied factors influencing federal biologists' membership in scientific societies, including the American Fisheries Society. We conducted an Internet survey of 3,755 U.S. Fish and Wildlife Service and 932 U.S. Geological Survey professionals. A greater proportion of U.S. Geological Survey biologists (90.2%) than U.S. Fish

T. Bruce Lauber; Eric J. Taylor; Barbara A. Knuth

2009-01-01

359

Opportunities and Needs for Mobile-Computing Technology to Support U.S. Geological Survey Fieldwork  

USGS Publications Warehouse

To assess the opportunities and needs for mobile-computing technology at the U.S. Geological Survey (USGS), we conducted an internal, Internet-based survey of bureau scientists whose research includes fieldwork. In summer 2005, 144 survey participants answered 65 questions about fieldwork activities and conditions, technology to support field research, and postfieldwork data processing and analysis. Results suggest that some types of mobile-computing technology are already commonplace, such as digital cameras and Global Positioning System (GPS) receivers, whereas others are not, such as personal digital assistants (PDAs) and tablet-based personal computers (tablet PCs). The potential for PDA use in the USGS is high: 97 percent of respondents record field observations (primarily environmental conditions and water-quality data), and 87 percent take field samples (primarily water-quality data, water samples, and sediment/soil samples). The potential for tablet PC use in the USGS is also high: 59 percent of respondents map environmental features in the field, primarily by sketching in field notebooks, on aerial photographs, or on topographic-map sheets. Results also suggest that efficient mobile-computing-technology solutions could benefit many USGS scientists because most respondents spend at least 1 week per year in the field, conduct field sessions that are least 1 week in duration, have field crews of one to three people, and typically travel on foot about 1 mi from their field vehicles. By allowing researchers to enter data directly into digital databases while in the field, mobile-computing technology could also minimize postfieldwork data processing: 93 percent of respondents enter collected field data into their office computers, and more than 50 percent spend at least 1 week per year on postfieldwork data processing. Reducing postfieldwork data processing could free up additional time for researchers and result in cost savings for the bureau. Generally, respondents support greater use of mobile-computing technology at the USGS and are interested in training opportunities and further discussions related to data archiving, access to additional digital data types, and technology development.

Wood, Nathan J.; Halsing, David L.

2006-01-01

360

Sudbury project (University of Muenster-Ontario Geological Survey): Field studies 1984-1989 - summary of results  

NASA Technical Reports Server (NTRS)

In cooperation between the Ontario Geological Survey and the Institute of Geology and Institute of Planetology, geological, petrological, and geochemical studies were carried out on impact-related phenomena of the Sudbury structure during the last decade. The main results of the field studies are briefly reviewed. Footwall rocks, sublayer, and lower sections of the Sudbury Igneous Complex (SIC) were mainly mapped and sampled in the northern (Levack Township) and western (Trillabelle and Sultana Properties) parts of the north range. Within these mapping areas Sudbury Breccias (SB) and Footwall Breccias (FB) were studied; SB were also investigated along extended profiles beyond the north and south ranges up to 55 km from the SIC. The Onaping Formation (OF) and the upper section of the SIC were studied both in the north range (Morgan and Dowling Townships) and in the southern east range (Capreol and McLennan Townships).

Bischoff, L.; Dressler, B. O.; Avermann, M. E.; Brockmeyer, P.; Lakomy, R.; Mueller-Mohr, V.

1992-01-01

361

Triassic gas potential seen high in Western Canada plains region  

SciTech Connect

This article summarizes results of a recently completed study -- Geological Survey of Canada Bulletin 483 -- of conventional gas resources contained in Triassic strata of the plains portion of the Western Canada basin. The report includes a detailed geological play analysis and numerical assessment of undiscovered gas potential in Part 1, by Bird et al. of the GSC, and an economic analysis, Part 2, by Waghmare et al. of the Energy Sector of Natural Resources Canada in Ottawa. This bulletin on the appraisal of the natural gas potential is part of a series of reports resulting from a comprehensive assessment by GSC of Western Canada gas resources. The Western Canada gas assessment project was divided into seven major play groups on the basis of geological criteria, following major stratigraphic units or structural/tectonic provinces. Each group has a distinct set of geological factors which control size, distribution, and type of hydrocarbon play or reservoir. The major play groups are: the Devonian, Carboniferous-Permian, Triassic, Jurassic to Lower Cretaceous (Mannville), Middle Cretaceous Colorado Group, Upper Cretaceous-Tertiary, and Rocky Mountain foreland belt. About 5% of the discovered in-place gas reserves in the interior plains of Western Canada basin is contained in Triassic rocks. Two-thirds of the discovered in-place gas reserves of the Triassic are contained in the Interior Plains, with the remaining third in Rocky Mountain foreland belt of the Cordilleran Orogen.

Bird, T.D.; Barclay, J.E.; Campbell, R.I.; Lee, P.J. (Geological Survey of Canada, Calgary, Alberta (Canada))

1994-12-05

362

U.S. Geological Survey Science for the Wyoming Landscape Conservation Initiative - 2008 Annual Report  

USGS Publications Warehouse

The Wyoming Landscape Conservation Initiative (WLCI) was launched in 2007 in response to concerns about threats to the State's world class wildlife resources, especially the threat posed by rapidly increasing energy development in southwest Wyoming. The overriding purpose of the WLCI is to assess and enhance aquatic and terrestrial habitats at a landscape scale, while facilitating responsible energy and other types of development. The WLCI includes partners from Federal, State, and local agencies, with participation from public and private entities, industry, and landowners. As a principal WLCI partner, the U.S. Geological Survey (USGS) provides multidisciplinary scientific and technical support to inform decisionmaking in the WLCI. To address WLCI management needs, USGS has designed and implemented five integrated work activities: (1) Baseline Synthesis, (2) Targeted Monitoring and Research, (3) Integration and Coordination, (4) Data and Information Management, and (5) Decisionmaking and Evaluation. Ongoing information management of data and products acquired or generated through the integrated work activities will ensure that crucial scientific information is available to partners and stakeholders in a readily accessible and useable format for decisionmaking and evaluation. Significant progress towards WLCI goals has been achieved in many Science and Technical Assistance tasks of the work activities. Available data were identified, acquired, compiled, and integrated into a comprehensive database for use by WLCI partners and to support USGS science activities. A Web-based platform for sharing these data and products has been developed and is already in use. Numerous map products have been completed and made available to WLCI partners, and other products are in progress. Initial conceptual, habitat, and climate change models have been developed or refined. Monitoring designs for terrestrial and aquatic indicators have been completed, pilot data have been collected for terrestrial indicators, and evaluations of alternative monitoring designs are underway. Initial models and map products have been developed for assessing vegetation, surface disturbance, oil and gas resources, mineral resources, surficial geology, invasive species, aspen treatments, ungulate migration corridors, greater sage-grouse (Centrocercus urophasianus), pygmy rabbits (Brachylagus idahoensis), and songbirds, and data were collected or compiled to validate and refine the models. Coordination and collaboration among partners has led to the production of several documents addressing WLCI objectives, strategies, and guiding principles, and has facilitated implementation of on-the-ground habitat treatments.

Bowen, Zachary H.; Aldridge, Cameron L.; Anderson, Patrick J.; Assal, Timothy J.; Baer, Lori Anne; Bristol, Sky; Carr, Natasha B.; Chong, Geneva W.; Diffendorfer, Jay E.; Fedy, Bradley C.; Garman, Steven L.; Germaine, Stephen; Grauch, Richard I.; Homer, Collin; Manier, Daniel J.; Kauffman, Matthew J.; Latysh, Natalie; Melcher, Cynthia P.; Miller, Kirk A.; Montag, Jessica; Nutt, Constance J.; Potter, Christopher; Sawyer, Hall; Smith, David B.; Sweat, Michael J.; Wilson, Anna B.

2009-01-01

363

A preliminary global geologic map of Vesta based on Dawn Survey orbit data  

NASA Astrophysics Data System (ADS)

NASA's Dawn spacecraft arrived at the asteroid 4Vesta on July 15, 2011, and is now collecting imaging, spectroscopic, and elemental abundance data during its one-year orbital mission. As part of the geological analysis of the surface, we have utilized images and data from the Survey orbital sequence to produce a global map of Vesta's surface. Unit boundaries and feature characteristics were determined primarily from morphologic analysis of image data; projected Framing Camera (FC) images were used as the base map. Spectral information from FC and VIR are used to refine unit contacts and to separate compositional distinctions from differences arising from illumination or other factors. Those units that could be discerned both in morphology and in the color data were interpreted as geologically distinct units. Vesta's surface is highly-cratered; differences in color and albedo are possible indicators of varying thicknesses and areal extents of crater ejecta. The most prominent candidate impact feature dominates the south pole. This feature consists of a depression roughly circular in shape, with a central hill that is characterized by smoother texture and lower albedo distinctive from the lower-lying surrounding terrain. A complex network of deep troughs and ridges cuts through the floor of the feature. Many of these troughs trend north-south, while others appear circumferential to the hill and are truncated by or terminate at orthogonal ridges/grooves. Detailed mapping of these features will provide information on their orientations, possible origin(s), and their relationship, if any, to the central hill. The equator of Vesta is also girdled by a wide set of flat-floored troughs. Their orientation implies that their formation is related to the south polar structure. Several regions on Vesta have a concentration of craters displaying low-albedo interiors or exteriors. These craters may have an exogenic origin, or may be the result of excavation of a thin sub-surface layer. Low-albedo regions also appear to have been uncovered by mass wasting around some topographic highs. If this dark material is endogenic in origin, this suggests that Vesta has both vertical and lateral stratigraphic heterogeneity. Current imaging also reveals dark materials and smooth regions that may be candidate locations/sites for volcanic activity. Further study at greater spatial and spectral resolution is required to unequivocally identify the character and origin of these features. The authors gratefully acknowledge the support of the Dawn Operations, Instruments, and Science Teams.

Yingst, R.; Williams, D. A.; Garry, W. B.; Mest, S. C.; Petro, N. E.; Buczkowski, D.; Schenk, P.; Jaumann, R.; Pieters, C. M.; Roatsch, T.; Preusker, F.; Nathues, A.; LeCorre, L.; Reddy, V.; Russell, C. T.; Raymond, C. A.; DeSanctis, C.; Ammannito, E.; Filacchione, G.

2011-12-01

364

U.S. Geological Survey DLG-3 and Bureau of the Census TIGER data. Development and GIS applications  

USGS Publications Warehouse

The U.S. Geological Survey has been actively developing digital cartographic and geographic data and standards since the early 1970's. One product is Digital Line Graph data, which offer a consistently accurate source of base category geographic information. The Bureau of the Census has combined their Dual Independent Map Encoding data with the Geological Survey's 1:100,000-scale Digital Line Graph data to prepare for the 1990 decennial census. The resulting Topologically Integrated Geographic Encoding and Referencing data offer a wealth of information. A major area of research using these data is in transportation analysis. The attributes associated with Digital Line Graphs can be used to determine the average travel times along each segment. Geographic information system functions can then be used to optimize routes through the network and to generate street name lists. Additional aspects of the subject are discussed.

Batten, Lawrence G.

1990-01-01

365

Public perceptions of climate change as a human health risk: surveys of the United States, Canada and Malta.  

PubMed

We used data from nationally representative surveys conducted in the United States, Canada and Malta between 2008 and 2009 to answer three questions: Does the public believe that climate change poses human health risks, and if so, are they seen as current or future risks? Whose health does the public think will be harmed? In what specific ways does the public believe climate change will harm human health? When asked directly about the potential impacts of climate change on health and well-being, a majority of people in all three nations said that it poses significant risks; moreover, about one third of Americans, one half of Canadians, and two-thirds of Maltese said that people are already being harmed. About a third or more of people in the United States and Canada saw themselves (United States, 32%; Canada, 67%), their family (United States, 35%; Canada, 46%), and people in their community (United States, 39%; Canada, 76%) as being vulnerable to at least moderate harm from climate change. About one third of Maltese (31%) said they were most concerned about the risk to themselves and their families. Many Canadians said that the elderly (45%) and children (33%) are at heightened risk of harm, while Americans were more likely to see people in developing countries as being at risk than people in their own nation. When prompted, large numbers of Canadians and Maltese said that climate change can cause respiratory problems (78-91%), heat-related problems (75-84%), cancer (61-90%), and infectious diseases (49-62%). Canadians also named sunburn (79%) and injuries from extreme weather events (73%), and Maltese cited allergies (84%). However, climate change appears to lack salience as a health issue in all three countries: relatively few people answered open-ended questions in a manner that indicated clear top-of-mind associations between climate change and human health risks. We recommend mounting public health communication initiatives that increase the salience of the human health consequences associated with climate change. PMID:20644690

Akerlof, Karen; Debono, Roberto; Berry, Peter; Leiserowitz, Anthony; Roser-Renouf, Connie; Clarke, Kaila-Lea; Rogaeva, Anastasia; Nisbet, Matthew C; Weathers, Melinda R; Maibach, Edward W

2010-06-01

366

Simulation and analysis of 1991 U.S. Geological Survey refraction data from the New Madrid Seismic Zone  

Microsoft Academic Search

Two orthogonal wide-aperture seismic refraction lines were acquired in the New Madrid Seismic Zone by the U.S. Geological Survey in 1991. These N-S and E-W oriented lines cross the Blytheville Arch and adjacent portions of the Reelfoot Rift. Ten shots were fired along the E-W line; eight shots were fired along the N-S line. Iterative numerical modeling, including scattering and

Qingbo Liao; George A. McMechan

1996-01-01

367

DEVELOPMENT OF THE U.S. GEOLOGICAL SURVEY'S PAGER SYSTEM (PROMPT ASSESSMENT OF GLOBAL EARTHQUAKES FOR RESPONSE)  

Microsoft Academic Search

The Prompt Assessment of Global Earthquakes for Response (PAGER) System plays a primary alerting role for global earthquake disasters as part of the U.S. Geological Survey's (USGS) response protocol. We provide an overview of the PAGER system, both of its current capabilities and our ongoing research and development. PAGER monitors the USGS's near real-time U.S. and global earthquake origins and

D. J. Wald; P. S. Earle; T. I. Allen; K. Jaiswal; K. Porter

368

Petrology and hydrothermal mineralogy of U.S. Geological Survey Newberry 2 drill core from Newberry caldera, Oregon  

Microsoft Academic Search

U.S. Geological Survey Newberry 2 was drilled to a depth of 932 m within Newberry caldera. The bottom-hole temperature of 265C is the highest reported temperature of any drill hole in the Cascades region of the United States. The upper part of the stratigraphic section pentrated by Newberry 2 consists of caldera fill below which are increasingly more mafic lavas

Terry E. C. Keith; Keith E. Bargar

1988-01-01

369

Petrology and hydrothermal mineralogy of U. S. Geological Survey Newberry 2 drill core from Newberry caldera, Oregon  

Microsoft Academic Search

U.S. Geological Survey Newberry 2 was drilled to a depth of 932 m within Newberry caldera. The bottom-hole temperature of 265°C is the highest reported temperature of any drill hole in the Cascades region of the United States. The upper part of the stratigraphic section pentrated by Newberry 2 consists of caldera fill below which are increasingly more mafic lavas

Terry E. C. Keith; Keith E. Bargar

1988-01-01

370

Waterborne and on-land electrical surveys to suggest the geological evolution of a glacial lake in NW Italy  

NASA Astrophysics Data System (ADS)

Geophysical surveys on and around the Candia Lake, located NE of Turin (NW Italy), in the internal depression of the Ivrea Morainic Amphitheater (IMA) right frontal sector, are reported in this paper. The surveys were intended to obtain a geophysical characterization of the lakebed, to investigate the interconnection paths between surface water and groundwater and to be used as a first general survey for suggesting the geological processes which lead to the actual morphology. An extensive waterborne continuous vertical electrical sounding (CVES) survey consisting of 15 profiles, with a total length of about 19 km of acquisition, was carried out on the lake surface. The processing of the acquired profiles with a laterally constrained inversion (LCI) approach lead to the reconstruction of the lakebed sediment distribution, down to 10 m depth. Self potential (SP) data recorded on the lake surface have also been analyzed. Moreover, to verify the areal distribution of the deposits, three electrical resistivity tomographies (ERTs) were carried out on land near the northern and southern shores of the lake. The combination of the geophysical survey results with hydrogeological information and geological observations and interpretations allowed the characterization of the submerged deposits, the probable identification of the main areas of groundwater recharge and the preliminary reconstruction of the lake genesis.

Colombero, Chiara; Comina, Cesare; Gianotti, Franco; Sambuelli, Luigi

2014-06-01

371

U.S. Geological Survey Science Strategy for the Wyoming Landscape Conservation Initiative  

USGS Publications Warehouse

Southwest Wyoming's wildlife and habitat resources are increasingly affected by energy and urban/exurban development, climate change, and other key drivers of ecosystem change. To ensure that southwest Wyoming's wildlife populations and habitats persist in the face of development and other changes, a consortium of public resource-management agencies proposed the Wyoming Landscape Conservation Initiative (WLCI), the overall goal of which is to implement conservation actions. As the principal agency charged with conducting WLCI science, the U.S. Geological Survey (USGS) has developed a Science Strategy for the WLCI. Workshops were held for all interested parties to identify and refine the most pressing management needs for achieving WLCI goals. Research approaches for addressing those needs include developing conceptual models for understanding ecosystem function, identifying key drivers of change affecting WLCI ecosystems, and conducting scientific monitoring and experimental studies to better understand ecosystems processes, cumulative effects of change, and effectiveness of habitat treatments. The management needs drive an iterative, three-phase framework developed for structuring and growing WLCI science efforts: Phase I entails synthesizing existing information to assess current conditions, determining what is already known about WLCI ecosystems, and providing a foundation for future work; Phase II entails conducting targeted research and monitoring to address gaps in data and knowledge during Phase I; and Phase III entails integrating new knowledge into WLCI activities and coordinating WLCI partners and collaborators. Throughout all three phases, information is managed and made accessible to interested parties and used to guide and improve management and conservation actions, future habitat treatments, best management practices, and other conservation activities.

Bowen, Zachary H.; Aldridge, Cameron L.; Anderson, Patrick J.; Chong, Geneva W.; Drummond, Mark A.; Homer, Collin; Johnson, Ronald C.; Kauffman, Matthew J.; Knick, Steven T.; Kosovich, John J.; Miller, Kirk A.; Owens, Tom; Shafer, Sarah; Sweat, Michael J.

2009-01-01

372

Health-based screening levels to evaluate U.S. Geological Survey ground water quality data  

USGS Publications Warehouse

Federal and state drinking-water standards and guidelines do not exist for many contaminants analyzed by the U.S. Geological Survey's National Water-Quality Assessment Program, limiting the ability to evaluate the potential human-health relevance of water-quality findings. Health-based screening levels (HBSLs) were developed collaboratively to supplement existing drinking-water standards and guidelines as part of a six-year, multi-agency pilot study. The pilot study focused on ground water samples collected prior to treatment or blending in areas of New Jersey where groundwater is the principal source of drinking water. This article describes how HBSLs were developed and demonstrates the use of HBSLs as a tool for evaluating water-quality data in a human-health context. HBSLs were calculated using standard U.S. Environmental Protection Agency (USEPA) methodologies and toxicity information. New HBSLs were calculated for 12 of 32 contaminants without existing USEPA drinking-water standards or guidelines, increasing the number of unregulated contaminants (those without maximum contaminant levels (MCLs)) with human-health benchmarks. Concentrations of 70 of the 78 detected contaminants with human-health benchmarks were less than MCLs or HBSLs, including all 12 contaminants with new HBSLs, suggesting that most contaminant concentrations were not of potential human-health concern. HBSLs were applied to a state-scale groundwater data set in this study, but HBSLs also may be applied to regional and national evaluations of water-quality data. HBSLs fulfill a critical need for federal, state, and local agencies, water utilities, and others who seek tools for evaluating the occurrence of contaminants without drinking-water standards or guidelines. ?? 2006 Society for Risk Analysis.

Toccalino, P.L.; Norman, J.E.

2006-01-01

373

The Carancas meteorite impact crater, Peru: Geologic surveying and modeling of crater formation and atmospheric passage  

NASA Astrophysics Data System (ADS)

The recent Carancas meteorite impact event caused a worldwide sensation. An H4-5 chondrite struck the Earth south of Lake Titicaca in Peru on September 15, 2007, and formed a crater 14.2 m across. It is the smallest, youngest, and one of two eye-witnessed impact crater events on Earth. The impact violated the hitherto existing view that stony meteorites below a size of 100 m undergo major disruption and deceleration during their passage through the atmosphere and are not capable of producing craters. Fragmentation occurs if the strength of the meteoroid is less than the aerodynamic stresses that occur in flight. The small fragments that result from a breakup rain down at terminal velocity and are not capable of producing impact craters. The Carancas cratering event, however, demonstrates that meter-sized stony meteoroids indeed can survive the atmospheric passage under specific circumstances. We present results of a detailed geologic survey of the crater and its ejecta. To constrain the possible range of impact parameters we carried out numerical models of crater formation with the iSALE hydrocode in two and three dimensions. Depending on the strength properties of the target, the impact energies range between approximately 100-1000 MJ (0.024- 0.24 t TNT). By modeling the atmospheric traverse we demonstrate that low cosmic velocities (12- 14 kms-1) and shallow entry angles (<20) are prerequisites to keep aerodynamic stresses low (<10 MPa) and thus to prevent fragmentation of stony meteoroids with standard strength properties. This scenario results in a strong meteoroid deceleration, a deflection of the trajectory to a steeper impact angle (40-60), and an impact velocity of 350-600 ms-1, which is insufficient to produce a shock wave and significant shock effects in target minerals. Aerodynamic and crater modeling are consistent with field data and our microscopic inspection. However, these data are in conflict with trajectories inferred from the analysis of infrasound signals.

Kenkmann, T.; Artemieva, N. A.; Wnnemann, K.; Poelchau, M. H.; Elbeshausen, D.; Nez Del Prado, H.

2009-08-01

374

THE CANADA-FRANCE ECLIPTIC PLANE SURVEY-L3 DATA RELEASE: THE ORBITAL STRUCTURE OF THE KUIPER BELT  

SciTech Connect

We report the orbital distribution of the trans-Neptunian comets discovered during the first discovery year of the Canada-France Ecliptic Plane Survey (CFEPS). CFEPS is a Kuiper Belt object survey based on observations acquired by the Very Wide component of the Canada-France-Hawaii Telescope Legacy Survey (LS-VW). The first year's detections consist of 73 Kuiper Belt objects, 55 of which have now been tracked for three years or more, providing precise orbits. Although this sample size is small compared to the world-wide inventory, because we have an absolutely calibrated and extremely well-characterized survey (with known pointing history) we are able to de-bias our observed population and make unbiased statements about the intrinsic orbital distribution of the Kuiper Belt. By applying the (publically available) CFEPS Survey Simulator to models of the true orbital distribution and comparing the resulting simulated detections to the actual detections made by the survey, we are able to rule out several hypothesized Kuiper Belt object orbit distributions. We find that the main classical belt's so-called 'cold' component is confined in semimajor axis (a) and eccentricity (e) compared to the more extended 'hot' component; the cold component is confined to lower e and does not stretch all the way out to the 2:1 resonance but rather depletes quickly beyond a = 45 AU. For the cold main classical belt population we find a robust population estimate of N(H{sub g} < 10) = 50 {+-} 5 x 10{sup 3} and find that the hot component of the main classical belt represents {approx}60% of the total population. The inner classical belt (sunward of the 3:2 mean-motion resonance) has a population of roughly 2000 trans-Neptunian objects with absolute magnitudes H{sub g} < 10, and may not share the inclination distribution of the main classical belt. We also find that the plutino population lacks a cold low-inclination component, and so, the population is somewhat larger than recent estimates; our analysis shows a plutino population of N(H{sub g} < 10){approx} 25{sup +25} {sub -12} x 10{sup 3}compared to our estimate of the size of main classical Kuiper Belt population of N(H{sub g} < 10) {approx} (126{sup +50} {sub -46}) x 10{sup 3}.

Kavelaars, J. J.; Jones, R. L.; Murray, I. [Herzberg Institute of Astrophysics, National Research Council of Canada, Victoria, BC V9E 2E7 (Canada); Gladman, B. J.; Petit, J.-M.; Van Laerhoven, C. [Department of Physics and Astronomy, 6224 Agricultural Road, University of British Columbia, Vancouver, BC (Canada); Parker, Joel Wm.; Bieryla, A. [Space Science and Engineering Division, Southwest Research Institute, 1050 Walnut Street, Suite 400, Boulder, CO 80302 (United States); Nicholson, P.; Margot, J. L. [Cornell University, Space Sciences Building, Ithaca, NY 14853 (United States); Rousselot, P.; Mousis, O. [Institut UTINAM, CNRS-UMR 6213, Observatoire de Besancon, BP 1615, 25010 Besancon Cedex (France); Scholl, H. [Observatoire de la Cote d'Azur, BP 4229, Boulevard de l'Observatoire, F-06304 Nice Cedex 4 (France); Marsden, B. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Benavidez, P.; Campo Bagatin, A. [Departamento de Fisica, Ingenieria de Sistemas y Teoria de la Senal, E.P.S.A., Universidad de Alicante, Apartado de Correos 99, Alicante 03080 (Spain); Doressoundiram, A. [LESIA, Observatoire de Paris, 92195 Meudon Principal Cedex (France); Veillet, C. [Canada-France-Hawaii Telescope Corporation, P.O. Box 1597, Kamuela, HI 96743 (United States)

2009-06-15

375

3D/4D modeling, visualization and information frameworks: current US Geological Survey practice and needs  

E-print Network

consist of 2D map/GIS overlays stacked in 3D space that only provide a limited extension of the geological of landscapes and the hydrodynamic simulations of surface waters. Progress needs to be made in visualizing; · Geologic models to define, assess, and bound resources and/or lithologic properties (water, oil, gas

376

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

and Water Resources Management: A Federal Perspective Circular 1331 #12;Climate Change and Water Resources Colorado River in Arizona; Salt-Gila project in Arizona (courtesy Bureau of Reclamation); U.S. Geological.S., Raff, D.A., Turnipseed, D.P., Webb, R.S., and White, K.D., 2009, Climate change and water resources

377

A Regional Guide to Iowa Landforms. Iowa Geological Survey Educational Series 3.  

ERIC Educational Resources Information Center

Presented is a non-technical account of the geological appearance and history of the state of Iowa. Included are Iowa's landscape features, geologic events, and processes that shaped the landscape. Maps and numerous illustrations picture the events and landforms described. Each of the state's seven principal landform regions is discussed in

Prior, Jean Cutler

378

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

of the Coachella Valley, California. Upper left: Global Positioning System equipment collecting three.................................................................................6 Global Positioning System Surveys.....................................................................................................8 Global Positioning System Survey, 1996

Torgersen, Christian

379

Socioeconomic status and health-related quality of life among elderly people: results from the Joint Canada/United States Survey of Health.  

PubMed

The objective of this study was to assess the independent effect of income on health-related quality of life (HRQL) among older adults in Canada and the United States. Data were obtained from the 2002-2003 Joint Canada/United States Survey of Health. The sample consisted of 755 Canadians and 1,151 Americans aged 65 years or older. HRQL was measured with the multidimensional Health Utilities Index Mark 3 (HUI3). The results indicated that in the elderly population, HRQL was significantly associated with household income in the United States but not in Canada, controlling for sociodemographic and health indicators. Various explanations for the positive linear relationship between HRQL and income in the elderly population are discussed, including the roles of access to health care and socioeconomic inequalities in the United States and Canada. PMID:18155337

Huguet, Nathalie; Kaplan, Mark S; Feeny, David

2008-02-01

380

Water survey of Canada: Application for use of ERTS-A for retransmission of water resources data  

NASA Technical Reports Server (NTRS)

The author has identified the following significant results. The fact that water resources data can be retransmitted from remote areas of Canada by polar orbiting spacecraft to users in population centers on a near real time basis reliably, accurately, and at relative low cost continues to be demonstrated. Over 60,000 transmissions from the nine data collection platforms installed at Water Survey of Canada gauging stations have been received. The stage and ice-out data retransmitted via ERTS-1 have been plotted on a chart record produced by a water stage servo-manometer installed on the Albany River. The stage increased smoothly until shortly after noon on May 19, 1974. During this time the indicator showed that the ice surface was intact. The stage then dropped sharply and the indicator read that the ice was out. The erratic chart trace after that was consistent with the assumption that the ice surface had broken up and that some short duration jams of broken ice were occurring.

Halliday, R. A. (principal investigator); Reid, I. A.

1974-01-01

381

Resident research associateships, postdoctoral research awards 1989: opportunities for research at the U.S. Geological Survey, U.S. Department of the Interior  

USGS Publications Warehouse

The scientists of the U.S. Geological Survey are engaged in a wide range of geologic, geophysical, geochemical, hydrologic, and cartographic programs, including the application of computer science to them. These programs offer exciting possibilities for scientific achievement and professional growth to young scientists through participation as Research Associates.

U.S. Geological Survey; U.S. National Research Council

1989-01-01

382

Unpublished letter from US Geological Survey Scientists to the editor of the New York Times Magazine regarding William J. Broads` November 18, 1990 article on Yucca Mountain  

SciTech Connect

This letter documents objections of a group of US Geological Survey Scientists to an article appearing November 18, 1990 in New York Times Magazine. The article was written by William J. Broad and dealt with a hypothesis of Jerry S. Szymanski. The letter addressed areas of concern; including hydrology, geology, tectonics, and the integrity of the scientists and their conclusions. (SM)

Dudley, W.W. Jr.; Buono, A.; Carr, M.D.; Downey, J.S.; Ervin, E.M.; Fox, K.F. Jr.; Gutentag, E.D.; Hayes, L.R.; Jones, B.F.; Luckey, R.R.; Muhs, D.R.; Peterman, Z.E.; Reheis, M.; Spengler, R.W.; Stuckless, J.S.; Taylor, E.M.; Whitney, J.W.; Wilson, W.E.; Winogard, I.J.

1990-11-28

383

THE DISTRIBUTION OF FAINT SATELLITES AROUND CENTRAL GALAXIES IN THE CANADA-FRANCE-HAWAII TELESCOPE LEGACY SURVEY  

SciTech Connect

We investigate the radial number density profile and the abundance distribution of faint satellites around central galaxies in the low-redshift universe using the Canada-France-Hawaii Telescope (CFHT) Legacy Survey. We consider three samples of central galaxies with magnitudes of M {sub r} = -21, -22, and -23 selected from the Sloan Digital Sky Survey group catalog of Yang et al. The satellite distribution around these central galaxies is obtained by cross-correlating these galaxies with the photometric catalog of the CFHT Legacy Survey. The projected radial number density of the satellites obeys a power-law form with the best-fit logarithmic slope of -1.05, independent of both the central galaxy luminosity and the satellite luminosity. The projected cross-correlation function between central and satellite galaxies exhibits a non-monotonic trend with satellite luminosity. It is most pronounced for central galaxies with M {sub r} = -21, where the decreasing trend of clustering amplitude with satellite luminosity is reversed when satellites are fainter than central galaxies by more than 2 mag. A comparison with the satellite luminosity functions in the Milky Way (MW) and M31 shows that the MW/M31 system has about twice as many satellites as around a typical central galaxy of similar luminosity. The implications for theoretical models are briefly discussed.

Jiang, C. Y.; Jing, Y. P.; Li, Cheng [Key Laboratory for Research in Galaxies and Cosmology of Chinese Academy of Sciences, Shanghai Astronomical Observatory, Nandan Road 80, Shanghai 200030 (China)

2012-11-20

384

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

that they were using survey methods that worked equally well for both species. Survey protocols for spotted owls A scientific study has determined that survey methods designed for spotted owls do not always detect barred barred owls. #12;Forest photograph by Tom Spies Highlights of Results Survey methods used to monitor

Fleskes, Joe

385

A national survey of the availability of intensity-modulated radiation therapy and stereotactic radiosurgery in Canada  

PubMed Central

Background The timely and appropriate adoption of new radiation therapy (RT) technologies is a challenge both in terms of providing of optimal patient care and managing health care resources. Relatively little is known regarding the rate at which new RT technologies are adopted in different jurisdictions, and the barriers to implementation of these technologies. Methods Surveys were sent to all radiation oncology department heads in Canada regarding the availability of RT equipment from 2006 to 2010. Data were collected concerning the availability and use of Intensity Modulated Radiation Therapy (IMRT) and stereotactic radiosurgery (SRS), and the obstacles to implementation of these technologies. Results IMRT was available in 37% of responding centers in 2006, increasing to 87% in 2010. In 2010, 72% of centers reported that IMRT was available for all patients who might benefit, and 37% indicated that they used IMRT for "virtually all" head and neck patients. SRS availability increased from 26% in 2006 to 42.5% in 2010. Eighty-two percent of centers reported that patients had access to SRS either directly or by referral. The main barriers for IMRT implementation included the need to train or hire treatment planning staff, whereas barriers to SRS implementation mostly included the need to purchase and/or upgrade existing planning software and equipment. Conclusions The survey showed a growing adoption of IMRT and SRS in Canada, although the latter was available in less than half of responding centers. Barriers to implementation differed for IMRT compared to SRS. Enhancing human resources is an important consideration in the implementation of new RT technologies, due to the multidisciplinary nature of the planning and treatment process. PMID:22309806

2012-01-01

386

Appraisal of the accuracy of U.S. Geological Survey ore reserve estimates for uranium-vanadium deposits on the Colorado Plateau  

USGS Publications Warehouse

The U.S. Geological Survey has made estimates of the reserves of uranium and vanadium in the carnotite deposits explored by Geological Survey drilling on the Colorado Plateau. This report presents an appraisal of the accuracy of the reserve estimates for deposits in the Uravan mineral belt, the causes of inaccuracy, and the significance of the estimates in terms of the total known reserves of the region.

Bush, Alfred Lerner; Stager, Harold Keith

1954-01-01

387

50 CFR 37.45 - Exploration by the U.S. Geological Survey.  

Code of Federal Regulations, 2011 CFR

...Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR (CONTINUED) THE NATIONAL WILDLIFE REFUGE SYSTEM GEOLOGICAL AND GEOPHYSICAL...EXPLORATION OF THE COASTAL PLAIN, ARCTIC NATIONAL WILDLIFE REFUGE, ALASKA General...

2011-10-01

388

50 CFR 37.45 - Exploration by the U.S. Geological Survey.  

Code of Federal Regulations, 2013 CFR

...Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR (CONTINUED) THE NATIONAL WILDLIFE REFUGE SYSTEM GEOLOGICAL AND GEOPHYSICAL...EXPLORATION OF THE COASTAL PLAIN, ARCTIC NATIONAL WILDLIFE REFUGE, ALASKA General...

2013-10-01

389

50 CFR 37.45 - Exploration by the U.S. Geological Survey.  

Code of Federal Regulations, 2012 CFR

...Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR (CONTINUED) THE NATIONAL WILDLIFE REFUGE SYSTEM GEOLOGICAL AND GEOPHYSICAL...EXPLORATION OF THE COASTAL PLAIN, ARCTIC NATIONAL WILDLIFE REFUGE, ALASKA General...

2012-10-01

390

The ultracool-field dwarf luminosity-function and space density from the Canada-France Brown Dwarf Survey  

NASA Astrophysics Data System (ADS)

Context. Thanks to recent and ongoing large scale surveys, hundreds of brown dwarfs have been discovered in the last decade. The Canada-France Brown Dwarf Survey is a wide-field survey for cool brown dwarfs conducted with the MegaCam camera on the Canada-France-Hawaii Telescope. Aims: Our objectives are to find ultracool brown dwarfs and to constrain the field brown-dwarf luminosity function and the mass function from a large and homogeneous sample of L and T dwarfs. Methods: We identify candidates in CFHT/MegaCam i' and z' images and follow them up with pointed near infrared (NIR) imaging on several telescopes. Halfway through our survey we found ~50 T dwarfs and ~170 L or ultra cool M dwarfs drawn from a larger sample of 1400 candidates with typical ultracool dwarfs i'-z' colours, found in 780 square degrees. Results: We have currently completed the NIR follow-up on a large part of the survey for all candidates from mid-L dwarfs down to the latest T dwarfs known with utracool dwarfs' colours. This allows us to draw on a complete and well defined sample of 102 ultracool dwarfs to investigate the luminosity function and space density of field dwarfs. Conclusions: We found the density of late L5 to T0 dwarfs to be 2.0+0.8-0.7 10-3 objects pc-3, the density of T0.5 to T5.5 dwarfs to be 1.4+0.3-0.2 10-3 objects pc-3, and the density of T6 to T8 dwarfs to be 5.3+3.1-2.2 10-3 objects pc-3. We found that these results agree better with a flat substellar mass function. Three latest dwarfs at the boundary between T and Y dwarfs give the high density 8.3+9.0-5.1 10-3 objects pc-3. Although the uncertainties are very large this suggests that many brown dwarfs should be found in this late spectral type range, as expected from the cooling of brown dwarfs, whatever their mass, down to very low temperature. Based on observations obtained with MegaPrime/MegaCam, a joint project of CFHT and CEA/DAPNIA, at the Canada-France-Hawaii Telescope (CFHT), which is operated by the National Research Council (NRC) of Canada, the Institut National des Sciences de l'Univers of the Centre National de la Recherche Scientifique (CNRS) of France, and the University of Hawaii. This work is based in part on data products produced at TERAPIX and the Canadian Astronomy Data Centre as part of the Canada-France-Hawaii Telescope Legacy Survey, a collaborative project of NRC and CNRS. Based on observations made with the ESO New Technology Telescope at the La Silla Observatory. Based on observations obtained at the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (United States), the Science and Technology Facilities Council (United Kingdom), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), CNPq (Brazil) and CONICET (Argentina). Based on observations with the Kitt Peak National Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc. (AURA) under cooperative agreement with the National Science Foundation. Based on observations made with the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. Based on observations made at The McDonald Observatory of the University of Texas at Austin.Tables 3, 5 and 8 are only available in electronic form at http://www.aanda.org

Reyl, C.; Delorme, P.; Willott, C. J.; Albert, L.; Delfosse, X.; Forveille, T.; Artigau, E.; Malo, L.; Hill, G. J.; Doyon, R.

2010-11-01

391

U.S. Geological Survey Emerging Applications of Unmanned Aircraft Systems  

NASA Astrophysics Data System (ADS)

In anticipation of transforming the research methods and resource management techniques employed across the Department of the Interior, the U.S. Geological Survey (USGS) Unmanned Aircraft Systems (UAS) Project Office is conducting missions using small UAS- sUAS platforms (<20 lbs.). The USGS is dedicated to expanding the use of sUAS technology in support of scientific, resource and land management missions. UAS technology is currently being used by USGS and our partners to monitor environmental conditions, analyze the impacts of climate change, respond to natural hazards, understand landscape change rates and consequences, conduct wildlife inventories and support related land management and law enforcement missions. Our ultimate goal is to support informed decision making by creating the opportunity, via UAS technology, to gain access to an increased level of persistent monitoring of earth surface processes (forest health conditions, wildfires, earthquake zones, invasive species, etc.) in areas that have been logistically difficult, cost prohibitive or technically impossible to obtain consistent, reliable, timely information. USGS is teaming with the Department of the Interior Aviation Management Directorate to ensure the safe and cost effective adoption of UAS technology. While the USGS is concentrating on operating sUAS, the immense value of increased flight time and more robust sensor capabilities available on larger platforms cannot be ignored. We are partnering with several groups including the Department of Homeland Security, National Aeronautics and Space Administration, Department of Defense, and National Oceanic and Atmospheric Administration for access to data collected from their fleet of high altitude, long endurance (HALE) UAS. The HALE systems include state of the art sensors including Electro-Optical, Thermal Infrared and Synthetic Aperture Radar (SAR). The data being collected by High Altitude, Long Endurance (HALE) systems is can be routinely shared in near real time at several DOI- USGS locations. Analysis tools are becoming available that can produce a robust set of products including a geo-referenced base for value added investigations. Much like the use of global positioning systems, unmanned aircraft systems have the potential of enabling us to be better stewards of the land. We are actively working to develop applications of the traditional full motion video capabilities and are engaged in developing additional sensor capabilities for sUAS including- magnetometers, temperature, radio telemetry, chemical and biological gas detection, and gimbal mounted "photogrammetric" cameras.

Hutt, M. E.

2012-12-01

392

A telephone survey of eel fishermen regarding external lesions and mortalities of American eels ( Anguilla rostrata) from Lake Ontario and the St. Lawrence River basin, Canada  

Microsoft Academic Search

Signs of decreasing landings and recruitment have been observed during the last decade in American eels (Anguilla rostrata) from the St. Lawrence River basin, Canada. A study was undertaken to examine whether important manifestational diseases among commercial catches could be associated with these declines. During this survey, 56 fishermen from Lakes Ontario, Saint-Franois and Saint-Pierre, the Richelieu River, the Qubec

Lucie Dutil; Denise Blanger; Catherine M Couillard

1997-01-01

393

Using volunteers to monitor the effects of acid precipitation on Common Loon ( Gavia immer ) reproduction in Canada: The Canadian Lakes Loon Survey  

Microsoft Academic Search

The Common Loon (Gavia immer) is a conspicuous and popular aquatic bird that inhabits large lakes (generally >10 ha) on Precambrian Shield across Canada. Because it relies on fish, it is a key bioindicator species linking acid precipitation to higher trophic levels in aquatic food chains. The Canadian Lakes Loon Survey (CLLS), a monitoring program involving volunteers, was initiated in

D. K. Mcnicol; M. L. Mallory; H. S. Vogel

1995-01-01

394

Mich. Geological & Biological Survey, Publ. 1; Biological Series 1. THE BIRDS OF SCHOOL GIRLS' GLEN REGION  

E-print Network

Merganser American Scaup Duck Lesser Scaup Duck Canada Goose American Bittern Great Blue Heron Black-crowned Night Heron American Woodcock Spotted Sandpiper Killdeer Bob-white Mourning Dove Marsh Hawk Sharp-breasted Warbler #12;Black-poll Warbler Blackburnian Warbler Black-throated Green Warbler Kirtland Warbler Pine

Shyy, Wei

395

163 years of refinement: the British Geological Survey sample registration scheme  

NASA Astrophysics Data System (ADS)

The British Geological Survey manages the largest UK geoscience samples collection, including: - 15,000 onshore boreholes, including over 250 km of drillcore - Vibrocores, gravity cores and grab samples from over 32,000 UK marine sample stations. 640 boreholes - Over 3 million UK fossils, including a "type and stratigraphic" reference collection of 250,000 fossils, 30,000 of which are "type, figured or cited" - Comprehensive microfossil collection, including many borehole samples - 290km of drillcore and 4.5 million cuttings samples from over 8000 UK continental shelf hydrocarbon wells - Over one million mineralogical and petrological samples, including 200,00 thin sections The current registration scheme was introduced in 1848 and is similar to that used by Charles Darwin on the Beagle. Every Survey collector or geologist has been issue with a unique prefix code of one or more letters and these were handwritten on preprinted numbers, arranged in books of 1 - 5,000 and 5,001 to 10,000. Similar labels are now computer printed. Other prefix codes are used for corporate collections, such as borehole samples, thin sections, microfossils, macrofossil sections, museum reference fossils, display quality rock samples and fossil casts. Such numbers infer significant immediate information to the curator, without the need to consult detailed registers. The registration numbers have been recorded in a series of over 1,000 registers, complete with metadata including sample ID, locality, horizon, collector and date. Citations are added as appropriate. Parent-child relationships are noted when re-registering subsubsamples. For example, a borehole sample BDA1001 could have been subsampled for a petrological thin section and off-cut (E14159), a fossil thin section (PF365), micropalynological slides (MPA273), one of which included a new holotype (MPK111), and a figured macrofossil (GSE1314). All main corporate collection now have publically-available online databases, such as PalaeoSaurus (fossils), Britrocks (mineralogy and petrology) and ComBo (combined onshore and offshore boreholes). ComBo links to core images, when available. Similar links are under development for Britrocks and PalaeoSaurus, with the latter also to include HR laser scanned digital models. These databases also link to internal and public GIS systems and to the BGS digital field data capture system. PalaeoSaurus holds an identification/authority/date history for each specimen, as well as recording type status, and figure and citation details. Similar comments can be added to Britrocks and ComBo. For several years, the BGS has provided online web access to the databases, for the discovery of physical samples , including parent-child links and citation information. Regretfully, authors frequently fail to cite sample registration numbers (nineteenth century geologists were sometimes better than their twenty-first century counterparts), or to supply copies of, or links to, the data generated, despite it being a condition of sample access. The need for editors and referees to enforce the inclusion of sample registration numbers, and for authors to lodge copies of papers, reports and data with the sample providers, is more important than yet another new database.

Howe, M. P.

2011-12-01

396

Water-resources activities in Utah by the U.S. Geological Survey, October 1, 1992, to September 30, 1993  

USGS Publications Warehouse

This report contains summaries of the progress of water-resources studies in Utah by the U.S. Geological Survey (USGS), Water Resources Division, Utah District, from October 1, 1992, to September 30, 1993. The program in Utah during this period consisted of 21 projects; a discussion of each project is presented in the main body of the report. The USGS was established by an act of Congress on March 3, 1879, to provide a permanent Federal agency to conduct the systematic and scientific classifi- cation of the public lands, and examination of the geologic structure, mineral resources, and products of national domain. An integral part of that original mission includes publishing and dissemi- nating the earth-science information needed to understand, to plan the use of, and to manage the Nation's energy, land, mineral, and water resources.

Hardy, Ellen E., (compiler); Dragos, Stefanie L.

1995-01-01

397

A drug use survey among clients of harm reduction sites across British Columbia, Canada, 2012  

PubMed Central

Background In British Columbia (BC), understanding of high-risk drug use trends is largely based on survey and cohort study data from two major cities, which may not be representative of persons who use drugs in other regions. Harm reduction stakeholders, representing each of the five geographic health regions in BC, identified a need for data on drug use to inform local and regional harm reduction activities across the province. The aims of this project were to (1) develop a drug use survey that could be feasibly administered at harm reduction (HR) sites across all health regions and (2) assess the data for differences in reported drug use frequencies by region. Methods A pilot survey focusing on current drug use was developed with stakeholders and administered among clients at 28 HR supply distribution sites across the province by existing staff and peers. Data were collated and analysed using univariate and bivariate descriptive statistics to assess differences in reported drug use frequencies by geography. A post-survey evaluation was conducted to assess acceptability and feasibility of the survey process for participating sites. Results Crack cocaine, heroin, and morphine were the most frequently reported drugs with notable regional differences. Polysubstance use was common among respondents (70%) with one region having 81% polysubstance use. Respondents surveyed in or near their region's major centre were more likely to report having used crack cocaine (p?50km from the major centre. Participants accessing services >50km from the regional centre were more likely to have used morphine (p?survey process acceptable, feasible to administer annually, and useful for responding to client needs. Conclusions The survey was a feasible way for harm reduction sites across BC to obtain drug use data from clients who actively use drugs. Drug use frequencies differed substantially by region and community proximity to the regional centre, underlining the need for locally collected data to inform service planning. PMID:24766846

2014-01-01

398

Career and Other Factors Influencing Postsecondary Decisions: Survey of High School Students in Alberta, Canada.  

ERIC Educational Resources Information Center

In a survey of grade 11 students in Alberta (n=1,047), 35% preferred university career paths, 18.5% community college, 21.9% technical institutes/apprenticeship. Many contemplated career choices for more than two years. They had limited knowledge of the work force but were developing positive work habits. Parents and peers were important career

Powlette, Nina M.; Young, Darius R.

1996-01-01

399

Gas geochemistry studies at the gas hydrate occurrence in the permafrost environment of Mallik (NWT, Canada)  

Microsoft Academic Search

We present real-time mud gas monitoring data as well as results of noble gas and isotope investigations from the Mallik 2002 Production Research Well Program, an international research project on Gas Hydrates in the Northwest Territories of Canada. The program participants include 8 partners; The Geological Survey of Canada (GSC), The Japan National Oil Corporation (JNOC), GeoForschungsZentrum Potsdam (GFZ), United

T. Wiersberg; J. Erzinger; M. Zimmer; J. Schicks; E. Dahms

2003-01-01

400

Use of electronic microprocessor-based instrumentation by the U.S. geological survey for hydrologic data collection  

USGS Publications Warehouse

The U.S. Geological Survey is acquiring a new generation of field computers and communications software to support hydrologic data-collection at field locations. The new computer hardware and software mark the beginning of the Survey's transition from the use of electromechanical devices and paper tapes to electronic microprocessor-based instrumentation. Software is being developed for these microprocessors to facilitate the collection, conversion, and entry of data into the Survey's National Water Information System. The new automated data-collection process features several microprocessor-controlled sensors connected to a serial digital multidrop line operated by an electronic data recorder. Data are acquired from the sensors in response to instructions programmed into the data recorder by the user through small portable lap-top or hand-held computers. The portable computers, called personal field computers, also are used to extract data from the electronic recorders for transport by courier to the office computers. The Survey's alternative to manual or courier retrieval is the use of microprocessor-based remote telemetry stations. Plans have been developed to enhance the Survey's use of the Geostationary Operational Environmental Satellite telemetry by replacing the present network of direct-readout ground stations with less expensive units. Plans also provide for computer software that will support other forms of telemetry such as telephone or land-based radio.

Shope, William G., Jr.

1991-01-01

401

Barriers to Rural Induced Abortion Services in Canada: Findings of the British Columbia Abortion Providers Survey (BCAPS)  

PubMed Central

Background Rural induced abortion service has declined in Canada. Factors influencing abortion provision by rural physicians are unknown. This study assessed distribution, practice, and experiences among rural compared to urban abortion providers in the Canadian province of British Columbia (BC). Methods We used mixed methods to assess physicians on the BC registry of abortion providers. In 2011 we distributed a previously-published questionnaire and conducted semi-structured interviews. Results Surveys were returned by 39/46 (85%) of BC abortion providers. Half were family physicians, within both rural and urban cohorts. One-quarter (17/67) of rural hospitals offer abortion service. Medical abortions comprised 14.7% of total reported abortions. The three largest urban areas reported 90% of all abortions, although only 57% of reproductive age women reside in the associated health authority regions. Each rural physician provided on average 76 (SD 52) abortions annually, including 35 (SD 30) medical abortions. Rural physicians provided surgical abortions in operating rooms, often using general anaesthesia, while urban physicians provided the same services primarily in ambulatory settings using local anaesthesia. Rural providers reported health system barriers, particularly relating to operating room logistics. Urban providers reported occasional anonymous harassment and violence. Conclusions Medical abortions represented 15% of all BC abortions, a larger proportion than previously reported (under 4%) for Canada. Rural physicians describe addressable barriers to service provision that may explain the declining accessibility of rural abortion services. Moving rural surgical abortions out of operating rooms and into local ambulatory care settings has the potential to improve care and costs, while reducing logistical challenges facing rural physicians. PMID:23840578

Norman, Wendy V.; Soon, Judith A.; Maughn, Nanamma; Dressler, Jennifer

2013-01-01

402

U.S. Geological Survey Activities Related to American Indians and Alaska Natives: Fiscal Year 2005  

USGS Publications Warehouse

Introduction This report describes the activities that the U.S. Geological Survey (USGS) conducted with American Indian and Alaska Native governments, educational institutions, and individuals during Federal fiscal year (FY) 2005. Most of these USGS activities were collaborations with Tribes, Tribal organizations, or professional societies. Others were conducted cooperatively with the Bureau of Indian Affairs (BIA) or other Federal entities. The USGS is the earth and natural science bureau within the U.S. Department of the Interior (DOI). The USGS does not have regulatory or land management responsibilities. As described in this report, there are many USGS activities that are directly relevant to American Indians, Alaska Natives, and to Native lands. A USGS website, dedicated to making USGS more accessible to American Indians, Alaska Natives, their governments, and institutions, is available at www.usgs.gov/indian. This website includes information on how to contact USGS American Indian/Alaska Native Liaisons, training opportunities, and links to other information resources. This report and previous editions are also available through the website. The USGS realizes that Native knowledge and cultural traditions of living in harmony with nature result in unique Native perspectives that enrich USGS studies. USGS seeks to increase the sensitivity and openness of its scientists to the breadth of Native knowledge, expanding the information on which their research is based. USGS scientific studies include data collection, mapping, natural resource modeling, and research projects. These projects typically last 2 or 3 years, although some are parts of longer-term activities. Some projects are funded cooperatively, with USGS funds matched or supplemented by individual Tribal governments, or by the BIA. These projects may also receive funding from the U.S. Environmental Protection Agency (USEPA), the Indian Health Service (part of the Department of Health and Human Services), or other Federal agencies. The USGS routinely works with its sister bureaus in the Department of the Interior to provide the scientific information and expertise needed to meet the Department's science priorities. Some USGS activities described in this report are conducted as collateral tasks that result from USGS employees identifying and responding to perceived needs. These endeavors are usually prompted by employee interests and frequently involve educational activities. The education is often a reciprocal learning and teaching experience for USGS employees and for Native participants. Through these activities, USGS employees help to fulfill a mission of the USGS - to demonstrate scientific relevance - while helping their fellow citizens. Increasingly, some of the educational activities are becoming parts of formal USGS projects. USGS employees also take initiative in assisting American Indians and Alaska Natives by participating in several organizations that promote awareness of science career opportunities among Native peoples and help build support and communication networks. One such group is the American Indian Science and Engineering Society (AISES). USGS employees join this organization on a voluntary basis, bringing the benefits of this expanded network to the USGS, as many employees do with other professional organizations. The studies briefly described in this report span subsistence issues, wildlife health, water quality, mineral resources, monitoring and modeling to gather information and predict what may happen in the future. Although each project description relates to Native Americans in some way, the projects vary widely, including who conducted the work, the goals and products, the duration of the study, and whether it was local or covered a broad area. Each major organizational unit of the USGS has identified an American Indian/Alaska Native liaison. The USGS has a regional organizational structure, with Western, Central,

Marcus, Susan M.

2007-01-01

403

Quality-assurance data for routine water analysis in the National Water-Quality laboratory of the US Geological Survey for water year 1988  

Microsoft Academic Search

The US Geological Survey maintains a quality assurance program based on the analysis of reference samples for its National Water Quality laboratory located in Denver, Colorado. Reference samples containing selected inorganic, nutrient, and precipitation constituents are prepared at the Survey's Water Quality Services Unit in Ocala, Florida, disguised as routine samples, and sent daily or weekly, as appropriate, to the

Lucey

1989-01-01

404

Utah Geology  

NSDL National Science Digital Library

Utah Geological Survey's Web site, Utah Geology, offers a variety of interesting geological information about the state. Good descriptions, illustrations, and photographs can be accessed on earthquakes and hazards, dinosaurs and fossils, rocks and minerals, oil and energy, and more. For example, the Rocks and Minerals page contains everything from how to stake a mining claim to downloadable summaries of mineral activity in the state. There is quite a bit of information within the site, and anyone interested in geology will find themselves exploring these pages for quite a while.

2001-01-01

405

Work Losses Related to Inflammatory Bowel Disease in Canada: Results From a National Population Health Survey  

Microsoft Academic Search

OBJECTIVE:Few studies have assessed the influence of inflammatory bowel disease (IBD) on work loss or estimated the costs related to work loss. Our analysis reports the employment effects related to IBD as based on the 1998 sample of the Canadian National Population Health Survey (NPHS).METHODS:Our predictive analysis adapts the theory of labor supply to a health context. Respondents between the

Teresa Longobardi; Philip Jacobs; Lieling Wu; Charles N. Bernstein

2003-01-01

406

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

­5294 Geology and Resources of Some World Oil-Shale Deposits #12;Cover. Left: New Paraho Co. experimental oil specimen of Green River oil shale interbedded with gray layers of volcanic tuff from the Mahogany zone. Bottom right: Block diagram of the oil shale resources in the Mahogany zone in about 1,100 square miles

Laughlin, Robert B.

407

Geologic-engineering surveys for the repair and reconstruction of water-development works  

Microsoft Academic Search

in tile foundation, abutments, or in the body of tile structure belong to the second group. Processes resulting from military and terrorist activities, and also sabotage, are also classed with this group. Negative results of the manitbstation of geologic-engineering processes will depend to a large degree on the composition, state, and properties of tile soils and their location (fbmldation bed,

A. A. Kagan; N. F. Krivonogova

2000-01-01

408

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

), Pacific Decadal Oscillation (PDO), and Atlantic Multidecadal Oscillation (AMO). ENSO is a coupled ocean from interannual, multidecadal, and longer geologic-time scales) is a major obstacle to the reliable characterization of global climate change resulting from human activities (Ghil, 2002). Interannual to multidecadal

Torgersen, Christian

409

Water Facts and Figures for Planners and Managers. Geological Survey Circular 601-1.  

ERIC Educational Resources Information Center

This booklet presents the language used in dealing with water. The booklet is intended to provide decision-makers with an adequate base of information to analyze water sources for consumption, recreation, and industry. The first section defines water and its properties, geologic locations, domestic and industrial uses, and patterns of change. The

Feth, J. H.

410

Surficial Geologic Surveys of Gale Crater and Melas Chasma, Mars: Integration of Remote-Sensing Data  

Microsoft Academic Search

Remote-sensing observations of Gale Crater and Melas Chasma are synthesized to better understand the present surface layer in these two scientifically interesting regions. Data sets analyzed include geologic maps, Mars Orbiter Laser Altimeter (MOLA) elevation, Thermal Emission Spectrometer (TES) albedo, TES thermal inertia, MOLA residual pulse width, TES rock abundance, and Viking and Mars Orbiter Camera images. Using these data

Shannon M. Pelkey; Bruce M. Jakosky

2002-01-01

411

NASA SP-484 P. D. Spudis, Chairman, U.S. Geological Survey  

E-print Network

couldn't tell what it was made of, and we had no idea whether it was young or old. To explain any Cataloging-in-Publication Data The Status and future of lunar geoscience. (NASA SP ;484) 1. Lunar geology. I settled and new ones raised. After Apollo, the Moon will never be

Spudis, Paul D.

412

U.S. Department of the Interior U.S. Geological Survey  

E-print Network

moni- tored geologic unrest in Long Valley Caldera and at adjacent Mammoth Mountain, California. After)isshownindarkershadesofgreen. Mammoth Mountain is a young volcano on the southwest rim of Long Valley Caldera, a large volcanic depression in eastern California. The Long Valley area, well known for its superb skiing, hiking, and camping

Torgersen, Christian

413

Evaluation of the U.S. Geological Survey Ground-Water Data-Collection Program in Hawaii, 1992  

USGS Publications Warehouse

In 1992, the U.S. Geological Survey ground-water data-collection program in the State of Hawaii consisted of 188 wells distributed among the islands of Oahu, Kauai, Maui, Molokai, and Hawaii. Water-level and water-quality (temperature, specific conductance, and chloride concentration) data were collected from observation wells, deep monitoring wells that penetrate the zone of transition between freshwater and saltwater, free-flowing wells, and pumped wells. The objective of the program was to collect sufficient spatial and temporal data to define seasonal and long-term changes in ground-water levels and chloride concentrations induced by natural and human-made stresses for different climatic and hydrogeologic settings. Wells needed to meet this objective can be divided into two types of networks: (1) a water-management network to determine the response of ground-water flow systems to human-induced stresses, such as pumpage, and (2) a baseline network to determine the response of ground-water flow systems to natural stresses for different climatic and hydrogeologic settings. Maps showing the distribution and magnitude of pumpage and the distribution of proposed pumped wells are presented to identify areas in need of water-management networks. Wells in the 1992 U.S. Geological Survey ground-water data-collection program were classified as either water-management or baseline network wells. In addition, locations where additional water-management network wells are needed for water-level and water-quality data were identified.

Anthony, Stephen S.

1997-01-01

414

U.S. Geological Survey Water science strategy--observing, understanding, predicting, and delivering water science to the nation  

USGS Publications Warehouse

This report expands the Water Science Strategy that began with the USGS Science Strategy, Facing Tomorrows ChallengesU.S. Geological Survey Science in the Decade 20072017 (U.S. Geological Survey, 2007). This report looks at the relevant issues facing society and develops a strategy built around observing, understanding, predicting, and delivering water science for the next 5 to 10 years by building new capabilities, tools, and delivery systems to meet the Nations water-resource needs. This report begins by presenting the vision of water science for the USGS and the societal issues that are influenced by, and in turn influence, the water resources of our Nation. The essence of the Water Science Strategy is built on the concept of water availability, defined as spatial and temporal distribution of water quantity and quality, as related to human and ecosystem needs, as affected by human and natural influences. The report also describes the core capabilities of the USGS in water sciencethe strengths, partnerships, and science integrity that the USGS has built over its 134-year history. Nine priority actions are presented in the report, which combine and elevate the numerous specific strategic actions listed throughout the report. Priority actions were developed as a means of providing the audience of this report with a list for focused attention, even if resources and time limit the ability of managers to address all of the strategic actions in the report.

Evenson, Eric J.; Orndorff, Randall C.; Blome, Charles D.; Bhlke, John Karl; Hershberger, Paul K.; Langenheim, Victoria E.; McCabe, Gregory J.; Morlock, Scott E.; Reeves, Howard W.; Verdin, James P.; Weyers, Holly S.; Wood, Tamara M.

2013-01-01

415

Survey of Trends in Adult Education and Training in Canada (1985-1995). Report of Canada in Preparation for CONFINTEA V.  

ERIC Educational Resources Information Center

Between 1985 and 1995, the progress of adult education in Canada was largely influenced by the restructuring of the economy and the job market; the changing nature of the state; the media and new information and communication technologies; and social and cultural change. Adult participation in education and training increased from 19 percent in

Beaudet, Gaetan; Senechal, Gilles

416

U.S. GEOLOGICAL SURVEY--MINERALS INFORMATION--1996 1 By Henry E. Hilliard  

E-print Network

was the lode mine production survey of copper, gold, lead, silver, and zinc. Of the 78 silver-producing lode mines to which a survey Alaska.--The Greens Creek silver-zinc-lead-gold mine resumed mining in July, and zinc. Idaho.--Production resumed at the Coeur Mine in May. The Coeur Mine, an underground silver

417

Geologic and Site Survey Setting for JIP Gulf of Mexico Gas Hydrate Drilling  

Microsoft Academic Search

The JIP Gulf of Mexico drilling program targeted two contrasting geologic settings to understand natural gas hydrates: a salt-withdrawal minibasin and a mound\\/seep site, both at mid-slope water depths of about 1300 m. The minibasin site (lease block Keathley Canyon 151) contains a Bottom Simulating Reflection (BSR) that deepens from 260 m below the sea floor near the edge of

D. R. Hutchinson; F. Snyder; P. E. Hart; C. D. Ruppel; J. Pohlman; W. T. Wood; R. B. Coffin; K. M. Edwards

2005-01-01

418

Microbialite Morphologies and Distributions-Geoacoustic Survey with an AUV of Pavilion Lake, British Columbia, Canada  

NASA Astrophysics Data System (ADS)

With advances in lake bottom mapping it has been observed that modern microbialites, much like the ancient stromatolites, thrive in freshwater lake environments. Previously collected data shows that a diverse community of living stromatolites are present within Pavilion Lake (Laval et al., 2000, Lim et al., 2009). An additional comprehensive data set was collected in June-July 2010. By building on the previous dataset it is possible to compare two high-resolution geoacoustic datasets. Using Autonomous Underwater Vehicles (AUVs) as exploration platforms to conduct surveys of the lake bottom, very high-resolution sonar data has been collected. The data collected in June-July 2010 is composed of 125 km of AUV trackline. This length of trackline allowed for survey coverage of nearly the entire lake bottom. The Gavia AUV used for this survey collected bathymetry data collocated with backscatter information. The data has been processed and gridded to 1m, with specific high value areas gridded to a finer 0.5m. The bathymetric data was compiled to create a base map of the floor of Pavilion Lake. Backscatter data was also collected and processed using the same 1m grid resolution. After the backscatter data was processed, it was draped over the bathymetry map of Pavilion Lake. The tools offered within the Fledermaus software package allow for the bathymetry data to be analyzed with respect to slope and rugosity. By analyzing this dense phase measuring bathymetric sonar of the lake bottom, with respect to slope and rugosity, it is possible to map the morphological trends of the stromatolites. Additionally, the ability to compare two datasets allows for erosional changes in the lake bottom to be identified. The bathymetry data allows for the quantitative analysis of bed forms within Pavilion Lake, allowing for a better understanding of microbialite morphologies. The backscatter data is increasingly important to the Pavilion Lake project because of the location and general surroundings of the lake. The lake itself is located in a limestone canyon, which frequently sustains erosional episodes. The backscatter data allows for the differentiation between erosional deposits and microbial mounds. The combination of backscatter and bathymetry allows for a further understanding of bedforms and microbialite growth patterns.

Gutsche, J. R.; Trembanis, A. C.

2010-12-01

419

Increasing childhood trauma in Canada: findings from the National Population Health Survey, 1994/95.  

PubMed

Age-cohort variation in childhood trauma was examined in the present study. The data were taken from the 1994/95 Canadian National Population Health Survey of household residents (n = 15,106). Childhood trauma was measured by a seven-item index (items reflected physical abuse, fearful experiences, hospitalization, being sent away from home, and parental disturbance). Reported prevalence of childhood trauma increased with each successively younger age-cohort (range = 31% to 60%). Females showed a larger change than males, and age differences grew more pronounced as trauma exposure increased. The data suggest that childhood trauma has been on the increase over the last few decades. This is in accord with findings from other studies which showed that depression and social problems have also been on the rise. This suggests that adult psychiatric sequelae of early trauma can be expected to show an increase in future years. PMID:10927848

Thompson, A H; Cui, X

2000-01-01

420

Survey of senior resident training in urologic laparoscopy, robotics and endourology surgery in Canada  

PubMed Central

Introduction: We determined the status of Canadian training during senior residency in laparoscopic, robotic and endourologic surgery. Methods: Fifty-six residents in their final year of urology residency training were surveyed in person in 2007 or 2008. Results: All residents completed the survey. Most residents (85.7%) train at centres performing more than 50 laparoscopic procedures yearly and almost all (96.4%) believe laparoscopic radical nephrectomy is the gold standard. About 82% of residents participated in a laparoscopic partial nephrectomy in 2008, compared to 64.7% in 2007. Of the respondents, 66% have participated in a laparoscopic prostatectomy and 54% believe the procedure has promising potential. Exposure and training in robotic-assisted laparoscopic procedures seem to be increasing as 35.7% of 2008 residents have access to a surgical robot and 7% consider themselves trained in robotic-assisted procedures. Most residents (71.4%) train at centres that perform percutaneous ablation. However, 65% state the procedure is performed solely by radiologists. Percutaneous nephrolithotomy is widely performed (98.2%), but only 37.5% of residents report training in obtaining primary percutaneous renal access. Despite only 12.5% of residents ranking their laparoscopic experience as below average or poor, an increasing proportion of graduating residents are pursuing fellowships in minimally-invasive urology. Conclusion: Laparoscopic nephrectomy is commonly performed and is considered the standard of care by Canadian urology residents. Robotic-assisted surgery is becoming more common but will require continued evaluation by educators who will ultimately define its role in the urological residency training curriculum. Minimally-invasive surgical fellowships remain popular, as Canadian residents do not feel adequately trained in certain advanced procedures. Urologists must strive to learn and adapt to new technologies or risk losing them to other specialties. PMID:20165577

Preston, Mark A.; Blew, Brian D.M.; Breau, Rodney H.; Beiko, Darren; Oake, Stuart J.; Watterson, J.D.

2010-01-01

421

Assessment of undiscovered conventional oil and gas resources of the Western Canada Sedimentary Basin, Canada, 2012  

USGS Publications Warehouse

The U.S. Geological Survey recently completed a geoscience-based assessment of undiscovered oil and gas resources of provinces within the Western Canada Sedimentary Basin. The Western Canada Sedimentary Basin primarily comprises the (1) Alberta Basin Province of Alberta, eastern British Columbia, and the southwestern Northwest Territories; (2) the Williston Basin Province of Saskatchewan, southeastern Alberta, and southern Manitoba; and (3) the Rocky Mountain Deformed Belt Province of western Alberta and eastern British Columbia. This report is part of the U.S. Geological Survey World Petroleum Resources Project assessment of priority geologic provinces of the world. The assessment was based on geoscience elements that define a total petroleum system (TPS) and associated assessment unit(s). These elements include petroleum source rocks (geochemical properties and petroleum generation, migration, and accumulation), reservoir description (reservoir presence, type, and quality), and petroleum traps (trap and seal types, and timing of trap and seal formation relative to petroleum migration). Using this framework, the Elk Point-Woodbend Composite TPS, Exshaw-Fernie-Mannville Composite TPS, and Middle through Upper Cretaceous Composite TPS were defined, and four conventional assessment units within the total petroleum systems were quantitatively assessed for undiscovered resources in the Western Canada Sedimentary Basin.

Higley, Debra

2013-01-01

422

Canadian population risk of radon induced lung cancer: a re-assessment based on the recent cross-Canada radon survey  

PubMed Central

Exposure to indoor radon has been determined to be the second leading cause of lung cancer after tobacco smoking. Canadian population risk of radon induced lung cancer was assessed in 2005 with the radon distribution characteristics determined from a radon survey carried out in the late 1970s in 19 cities. In that survey, a grab sampling method was used to measure radon levels. The observed radon concentration in 14 000 Canadian homes surveyed followed a lognormal distribution with a geometric mean (GM) of 11.2 Bq m3 and a geometric standard deviation (GSD) of 3.9. Based on the information from that survey, it was estimated that ?10 % of lung cancers in Canada resulted from indoor radon exposure. To gain a better understanding of radon concentrations in homes across the country, a national residential radon survey was launched in April 2009. In the recent survey, long-term (3 month or longer) indoor radon measurements were made in roughly 14 000 homes in 121 health regions across Canada. The observed radon concentrations follow, as expected, a lognormal distribution with a GM of 41.9 Bq m3 and a GSD of 2.8. Based on the more accurate radon distribution characteristics obtained from the recent cross-Canada radon survey, a re-assessment of Canadian population risk for radon induced lung cancer was undertaken. The theoretical estimates show that 16 % of lung cancer deaths among Canadians are attributable to indoor radon exposure. These results strongly suggest the ongoing need for the Canadian National Radon Program. In particular, there is a need for a focus on education and awareness by all levels of government, and in partnership with key stakeholders, to encourage Canadians to take action to reduce the risk from indoor radon exposure. PMID:22874897

Chen, J.; Moir, D.; Whyte, J.

2012-01-01

423

Current status of core and advanced adult gastrointestinal endoscopy training in Canada: Survey of existing accredited programs  

PubMed Central

OBJECTIVE: To determine the current status of core and advanced adult gastroenterology training in Canada. METHODS: A survey consisting of 20 questions pertaining to core and advanced endoscopy training was circulated to 14 accredited adult gastroenterology residency program directors. For continuous variables, median and range were analyzed; for categorical variables, percentage and associated 95% CIs were analyzed. RESULTS: All 14 programs responded to the survey. The median number of core trainees was six (range four to 16). The median (range) procedural volumes for gastroscopy, colonoscopy, percutaneous endoscopic gastrostomy and sigmoidoscopy, respectively, were 400 (150 to 1000), 325 (200 to 1500), 15 (zero to 250) and 60 (25 to 300). Eleven of 13 (84.6%) programs used endoscopy simulators in their curriculum. Eight of 14 programs (57%) provided a structured advanced endoscopy training fellowship. The majority (88%) offered training of combined endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic ultrasonography. The median number of positions offered yearly for advanced endoscopy fellowship was one (range one to three). The median (range) procedural volumes for ERCP, endoscopic ultrasonography and endoscopic mucosal resection, respectively, were 325 (200 to 750), 250 (80 to 400) and 20 (10 to 63). None of the current programs offered training in endoscopic submucosal dissection or natural orifice transluminal endoscopic surgery. CONCLUSION: Most accredited adult Canadian gastroenterology programs met the minimal procedural requirements recommended by the Canadian Association of Gastroenterology during core training. However, a more heterogeneous experience has been observed for advanced training. Additional studies would be required to validate and standardize evaluation tools used during gastroenterology curricula. PMID:23712301

Xiong, Xin; Barkun, Alan N; Waschke, Kevin; Martel, Myriam

2013-01-01

424

Treatment of muscle-invasive bladder cancer in Canada: A survey of genitourinary medical oncologists and urologists  

PubMed Central

Introduction: Uptake of neoadjuvant chemotherapy (NC) for muscle invasive bladder cancer (MIBC) has been low despite evidence of a survival benefit. The primary aim of this study was to better understand why the rates are low and determine what factors specifically influence the decision to recommend NC for MIBC. Methods: A 31-question survey was emailed between 2009 and 2011 to medical oncologists belonging to the Canadian Association of Genitourinary Medical Oncologists (CAGMO); and to urologists belonging to the Canadian Urologic Oncology Group (CUOG). We gathered data on practice characteristics, referrals for NC, factors influencing NC use, and chemotherapy regimens offered. Responses were summarized using descriptive statistics. Results: In total, 26/30 (87%) medical oncologists and 25/84 (30%) urologists, who were primarily academic, completed the survey. Most clinicians (medical oncologists 96%, urologists 88%) recommended NC for MIBC, because they considered it to be the standard of care, but most medical oncologists saw ?6 referrals annually. Performance status, presence of comorbidities and renal function were key considerations in offering NC. NC was not offered if performance status ?2 (medical oncologists 38%, urologists 44%), age >80 (medical oncologists 46%, urologists 39%), or glomerular filtration rate ?40 mL/min (medical oncologists 81%, urologists 50%). Conclusions: Most academic clinicians in Canada believe that cisplatin-based combination NC is the standard of care for MIBC and recommend it for patients with adequate performance status and renal function. Using a multidisciplinary approach to treat this disease may be one strategy to increase referral rates for NC and uptake of NC.

Hsu, Tina; Black, Peter C.; Chi, Kim N.; Canil, Christina M.; Eigl, Bernhard J.; Kulkarni, Girish; North, Scott; Wood, Lori; Zlotta, Alexandre R.; Lau, Anthea; Panzarella, Tony; Sridhar, Srikala S.

2014-01-01

425

Late-Quaternary glaciation and postglacial emergence, southern Eureka Sound, high-Arctic Canada  

Microsoft Academic Search

Eureka Sound is the inter-island channel separating Ellesmere and Axel Heiberg islands, High Arctic Canada. This thesis reconstructs the glacial and sea level history of southern Eureka Sound through surficial geological mapping, studies of glacial sedimentology and geomorphology, surveying of raised marine shorelines, radiocarbon dating of marine shells and driftwood and surface exposure dating of erratics and bedrock. Granite dispersal

Colm Seamus O Cofaigh

1999-01-01

426

THE NEW STRONG MOTION SEISMIC NETWORK IN SOUTHWEST BRITISH COLUMBIA, CANADA  

Microsoft Academic Search

SUMMARY The Geological Survey of Canada has designed a new type of low-cost strong motion seismometer and is currently updating its strong motion seismic network with the new instruments. As of January 2004 about fifty instruments are in operation in Southwestern British Columbia and in a dense urban demonstration network in the cities of Vancouver and Richmond. With a noise

Andreas ROSENBERGER; Ken BEVERLEY; Garry ROGERS

2004-01-01

427

A Web-Based Survey of Residents' Views on Advocating with Patients for a Healthy Built Environment in Canada  

PubMed Central

Purpose. To determine family medicine residents' perceived knowledge and attitudes towards the built environment and their responsibility for health advocacy and to identify their perceived educational needs and barriers to patient education and advocacy. Methods. A web-based survey was conducted in Canada with University of Toronto family medicine residents. Data were analyzed descriptively. Results. 93% agreed or strongly agreed that built environment significantly impacts health. 64% thought educating patients on built environment is effective disease prevention; 52% considered this a role of family physicians. 78% reported that advocacy for built environment is effective disease prevention; 56% perceived this to be the family physician's role. 59% reported being knowledgeable to discuss how a patient's environment may affect his/her health; 35% reported being knowledgeable to participate in community discussions on built environment. 78% thought education would help with integration into practice. Inadequate time (92%), knowledge (73%), and remuneration (54%) were barriers. Conclusions. While residents perceived value in education and advocacy as disease prevention strategies and acknowledged the importance of a healthy built environment, they did not consider advocacy towards this the family physician's role. Barrier reduction and medical education may contribute to improved advocacy, ultimately improving physical activity levels and patient health outcomes.

Cruickshank, Matthew

2014-01-01

428

Parasites of Dogs from Indian Settlements in Northwestern Canada: A Survey with Public Health Implications  

PubMed Central

A total of 959 faecal samples were obtained from dogs in 12 native communities in Northern Saskatchewan, Central and Northern Alberta and the Northwest Territories. All samples were examined using a flotation technique. Samples from an area of endemic human amoebic infections were also examined by a formol-ether sedimentation method. Eighteen necropsies were performed. Entamoeba histolytica cysts were recovered from dog faeces at Loon Lake, Saskatchewan. Toxocara canis had low incidence in Saskatchewan and Central Alberta, and appeared to be almost non-existent further North. Toxascaris leonina was found in all areas surveyed. Canine hookworm infections were plentiful in all areas, the highest incidence being recorded from Northern Alberta and Northwest Territories. Many Taenia (or Echinococcus) infections were found consistently in all areas. Only one infection with Dipylidium caninum was discovered. Metorchis conjunctus infections were found to be common in the Saskatchewan reserves. Infections with Diphyllobothrium sp. were found in all communities with access to good fishing. One specimen of Dioctophyma renale was recovered at necropsy. Infections with parasites of no known zoonotic importance such as Trichuris, Alaria and Isospora species were also recorded. PMID:4265550

Unruh, D. H. A.; King, J. E.; Allen, J. R.; Eaton, R. D. P.

1973-01-01

429

Practitioner survey of the state of health integration in environmental assessment: The case of northern Canada  

SciTech Connect

Based on a case study of health integration in Canadian northern EA, this paper further demonstrates the lack of consistent integration of health in EA practice. A survey was administered to northern EA and health practitioners, administrators and special interest groups to assess current northern health assessment practices, the scope of health in EA, EA performance with regard to health assessment and the perceived barriers to health integration. Results suggest that health is currently recognized as an important component of northern EA and is addressed in the majority of cases; however, health is addressed primarily during the pre-decision stages of EA and less often during post-decision follow-up and monitoring. Moreover, when health is addressed, attention is limited to the physical components of health and health impacts due to physical environmental change, with considerably less attention given to the social aspects of health. Results also suggest dissent between EA practitioners, health practitioners and other interests concerning the overall state of health in EA; however, there is consensus on the key challenges to improved integration, namely differences in understanding of the scope of health and expectations of EA to assess health impacts; limited coordination between EA and health practitioners; limited scope and requirements of current EA legislation for health assessment; and the lack of supporting EA methods and frameworks.

Noble, Bram [Department of Geography, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5A5 (Canada)]. E-mail: b.noble@usask.ca; Bronson, Jackie [Stantec Consulting Ltd., 100-75-24th Street East, Saskatoon, SK S7K 0K3 (Canada)]. E-mail: JBronson@stantec.com

2006-05-15

430

Financial strain, social capital, and perceived health during economic recession: a longitudinal survey in rural Canada.  

PubMed

Although the health consequences of financial strain are well documented, less is understood about the health-protective role of social capital. Social capital refers to a sense of community embeddedness, which is in part reflected by group membership, civic participation, and perceptions of trust, cohesion, and engagement. We investigated whether perceptions of social capital moderate the relation between financial strain and health, both mental and physical. This longitudinal study surveyed adults in two communities in rural Ontario where significant job losses recently occurred. Data were collected on financial strain, social capital, perceived stress, symptoms of anxiety and depression, and physical health on three occasions over 18 months (N's = 355, 317, and 300). As expected, financial strain positively related to perceived stress, poor physical health and symptoms of anxiety and depression, whereas social capital related to less stress, better physical health, and fewer symptoms of anxiety and depression. Effects of financial strain on perceived stress and depressive symptoms were moderated by social capital such that financial strain related more closely to perceived stress and depressive symptoms when social capital was lower. The findings underscore the health-protective role of community associations among adults during difficult economic times. PMID:24251877

Frank, Christine; Davis, Christopher G; Elgar, Frank J

2014-01-01

431

Data retransmission from water survey of Canada gauging stations using the ERTS data collection system  

NASA Technical Reports Server (NTRS)

Nine sites were selected for installation of Data Collection Platforms (DCPs) with the objective of obtaining one near real time water level reading a day from each site. Also the dependability, costs and other aspects of the system could be studied and decisions made with respect to the feasibility of operating a much larger network of DCPs. The number of transmissions received each day from the gauging stations varies from a maximum of 26 to 12 and a minimum of 10 to 3, depending on the location. Quality checks of data have indicated that the data are good. None of the nine DCPs have failed once they have been successfully activated. The experience with the ERTS data collection system has been excellent. The DCP appears to be a rugged, reliable piece of equipment. The ones installed at water survey sites have withstood temperatures less than -40 C and the antennas have withstood wind speeds of over 80 kph (50 mph) and snow loads of 0.6 m (2 ft).

Halliday, R. A.

1975-01-01

432

Factors Influencing the Success of Women in the Geosciences: An Example from the U.S. Geological Survey  

NASA Astrophysics Data System (ADS)

A review of my education and 30 year career at the U.S. Geological Survey (USGS), starting as a field assistant in 1979 to becoming Chief Scientist for Geology in 2001, reveals some of the critical success factors for women in the geosciences as well as factors that inhibit success. Women comprised 5% of the geosciences workforce when I started as an undergraduate in 1975, so why did I pursue the geosciences? A high school course covering earth and biological field science was taught by an excellent teacher who encouraged me to pursue geology. In college, several factors influenced my continuation in geology: two supportive mentors, an earth science department providing a broad diversity of courses; opportunities to take graduate courses, interaction with graduate students, and doing an undergraduate thesis. Most important was the individual attention given to undergraduates by both faculty and graduates regardless of gender. The summer intern program sponsored by the National Association of Geology Teachers and the USGS was a deciding factor to my becoming a geoscientist in the public service. Family and job concerns made it difficult to complete a doctorate however, and there existed gender bias against women conducting field work. Critical factors for success at USGS included: dealing ethically, openly, and immediately with gender-biased behavior, taking on responsibilities and science projects out of my "comfort zone", having the support of mentors and colleagues, and always performing at the highest level. In the past 15 years, there have been many "first" women in various leadership roles within the USGS, and now, after 131 years, we have the first woman Director. It is important to note that as gender barriers are broken at the upper levels in an organization, it paves the way for others. Statistics regarding women are improving in terms of percentage of enrollment in degrees and jobs in the private, public, and academic sectors. Women, however, still bear the brunt of decision-making in work and family life issues no matter what the occupation, and thus need the support of colleagues, community, law, and family to continue succeeding at the highest levels of government, business, and academia.

Gundersen, Linda C. S.

2010-05-01

433

Geologic results of the TMS survey over Mt. Emmons, Colorado. [Thematic Mapper Simulator  

NASA Technical Reports Server (NTRS)

In 1981, NASA conducted with an American company a cooperative study, involving the use of Thematic Mapper Simulator (TMS) data. The study was concerned with an area near Crested Butte, Colorado, which contains a known, but unmined, major molybdenum deposit. Detailed ground observations in the Mt. Emmons area demonstrated that the imagery was extremely effective for detection of geologically significant features. The imagery specifically delineated areas of ferric iron staining, seritization, and hornfelized rock. Attention is given to data acquisition and data processing, field work in 1982 and in 1983, the integration of gravity data, and costs.

Rickman, D. L.; Sadowski, R. M.

1985-01-01

434

National Archive of Marine Seismic Surveys (NAMSS): Status Report on U.S. Geological Survey Program Providing Access to Proprietary Data  

NASA Astrophysics Data System (ADS)

During the last four decades, hundreds of thousands of line kilometers of 2D marine seismic reflection data have been collected by the hydrocarbon exploration industry within the United States Exclusive Economic Zone. The commercial value of much of these data has decreased significantly because of drilling moratoria and new technology such as 3D acquisition. However, these data still have tremendous value for scientific research and education purposes. The U.S. Geological Survey has recently made agreements with two commercial owners of large data holdings to transfer to the public domain over 250,000 line kilometers of marine data from off the eastern, western, and Alaskan coasts of the United States. In order to provide access to the data, the USGS has developed the National Archive of Marine Seismic Surveys (NAMSS) program. For a small fraction of the money that would be required to collect new data, work is underway to organize and recover digital data currently stored on tens of thousands of 9-track tapes. Even where new data collection efforts could be funded, current environmental restrictions on marine seismic exploration could preclude operations. The NAMSS web site at http://walrus.wr.usgs.gov/NAMSS/ has trackline maps of surveys that are now or will soon be available for downloading in SEG-Y format. As more owners and users become aware of this new data resource, it is hoped that additional partners in will join this data rescue effort.

Hart, P. E.; Childs, J. R.

2005-05-01

435

A survey of dairy calf management practices in Canada that affect animal welfare.  

PubMed

There is growing interest among the public in farm animal welfare and a need for methods to assess animal welfare on farm. A survey on calf rearing practices that might affect dairy calf welfare was performed via a 1-h interview on 115 dairy farms (mean +/- SD: herd size=52.5+/-20.9 cows; milk production=8,697+/-1,153L) distributed throughout the province of Quebec. Despite frequent recommendations, many dairy producers continue to use management practices that increase the health risks of milk-fed calves. Major risk factors for poor calf welfare identified were 1) no use of calving pen in 51.3% of herds and low level of surveillance of calvings, especially at nighttime (once every 12h), 2) no disinfection of newborn's navel in 36.8% of herds, and delayed identification and, hence, calf monitoring (3 d), 3) 15.6% of farms relied on the dam to provide colostrum and none checked colostrum quality or passive transfer of immunity, 4) dehorning and removal of extra teats proceeded at late ages (6.4 wk and 6.7 mo, respectively) and without adequate pain control, 5) use of traditional restrictive milk feeding and waste milk distributed to unweaned calves without precaution in 48.2% of herds, 6) abrupt weaning performed in 16.5% of herds, and 7) calves housed individually in 87.9% of herds, and most inappropriate housing systems (crate=27.0%, tie-stall=13.9%, attached against a wall=5.7%) remained. This risk factor assessment was the first step in an intervention strategy to improve calf welfare on dairy farms. PMID:20172250

Vasseur, E; Borderas, F; Cue, R I; Lefebvre, D; Pellerin, D; Rushen, J; Wade, K M; de Passill, A M

2010-03-01

436

Report on geological surveys in the 300-FF-1 operable unit  

SciTech Connect

This report describes a set of geophysical surveys performed by the Pacific Northwest Laboratory at selected locations within the 300-FF-1 Operable Unit at Hanford. Field work and preliminary data processing activities were initiated in September 1989. These actions were terminated by the Westinghouse Hanford Company before completion in December 1989. Work was reinitiated in October 1990, to complete the processing of the data that had already been collected and to report the results. Because the field work was only partially completed, the task objectives, as presented in the Statement of Work, could not be fully met. This report is, therefore, a progress report covering the work performed through December 11, 1989. This task involved (1) ground-penetrating radar surveys of the 618-4 and 618-5 Burial Grounds, and (2) ground-penetrating radar and electromagnetic induction surveys along the assumed routes of the abandoned process sewers and radioactive liquid waste sewers in the 300-FF-1 Operable Unit. The surveys in the burial grounds were intended to identify burial trenches and pits, to determine the depth of fill, and to locate waste materials, including any that might be outside the perimeter fences. The surveys along the sewer routes were intended, first, to confirm the locations of the sewers as shown on existing maps or to otherwise accurately determine their locations, and second, to attempt to identify locations of possible leaks. 3 refs., 3 figs., 2 tabs.

Sandness, G.A.

1991-03-01

437

Coal resources of Northern Canada with emphasis on Whitehorse Trough, Bonnet Plume Basin and Brackett Basin 1 Geological Survey of Canada Contribution No. 1999-127. 1  

Microsoft Academic Search

In the Yukon Territory and District of Mackenzie, coal-bearing strata, ranging in age from Mississippian to Oligocene, have been found in some 27 areas. In the Yukon, such rocks underlie 37,000 km2, while in the District of Mackenzie, 3000 km2 are believed to contain coal in the Brackett Basin alone, with additional potential in the Liard River, Godlin Lake and

A. R Cameron; A. P Beaton

2000-01-01

438

Geological disaster survey based on Curvelet transform with borehole Ground Penetrating Radar in Tonglushan old mine site.  

PubMed

Tonglushan old mine site located in Huangshi City, China, is very famous in the world. However, some of the ruins had suffered from geological disasters such as local deformation, surface cracking, in recent years. Structural abnormalities of rock-mass in deep underground were surveyed with borehole ground penetrating radar (GPR) to find out whether there were any mined galleries or mined-out areas below the ruins. With both the multiresolution analysis and sub-band directional of Curvelet transform, the feature information of targets' GPR signals were studied on Curvelet transform domain. Heterogeneity of geotechnical media and clutter jamming of complicated background of GPR signals could be conquered well, and the singularity characteristic information of typical rock mass signals could be extracted. Random noise had be removed by thresholding combined with Curvelet and the statistical characteristics of wanted signals and the noise, then direct wave suppression and the spatial distribution feature extraction could obtain a better result by making use of Curvelet transform directional. GprMax numerical modeling and analyzing of the sample data have verified the feasibility and effectiveness of our method. It is important and applicable for the analyzing of the geological structure and the disaster development about the Tonglushan old mine site. PMID:25084600

Tang, Xinjian; Sun, Tao; Tang, Zhijie; Zhou, Zenghui; Wei, Baoming

2011-06-01

439

The US Geological Survey's side-looking airborne radar acquisition program: Image data from the Rocky Mountains to the Pacific  

SciTech Connect

The US Geological Survey (USGS) has been systematically collecting side-looking airborne radar (SLAR) image data for the US since 1980. The image strip swaths, ranging in width from 20 to 46 km, are acquired commercially by X-band (3 cm) radar systems. Data are acquired with 60 percent side-lap for better mosaic preparation and stereoscopic capability. The image strips are assembled into 1[degree] x 2[degree] mosaic quadrangles that are based on the USGS 1:250,000-topographic map series for control, format, and nomenclature. These mosaics present the data in a broad synoptic view that facilitates geologic interpretation. SLAR image mosaics have been prepared for more than 35 percent of the US west of the Rocky Mountain front. In addition to quadrangle mosaics, regional composite mosaics have been prepared as value-added products. These include Pacific Northwest (14 quadrangles), southern California Coastal (from San Francisco to San Diego), Reno-Walker (includes parts of Yellowstone and Grand Teton National Parks), Uinta Basin (Salt Lake City, Price and Grand Junction), and Salton Sea Region (San Diego, Santa Ana, El Centro and Salton Sea). Most of the image data are available on computer compatible tapes and photographic products. To make the data more accessible and reasonably priced, the strip images are being processed into CD-ROM (compact disc, read-only memory). One demonstration CD-ROM includes the mosaics of Las Vegas, Mariposa, Ritzville, Walla Walla, and Pendleton quadrangles.

Kovar, A.N.; Schoonmaker, J.W. Jr. (Geological Survey, Reston, VA (United States))

1993-04-01

440

South Florida Information Access (SOFIA) metadata for the U.S. Geological Survey Greater Everglades place-based studies  

USGS Publications Warehouse

Beginning in 1995 the U.S. Geological Survey (USGS) funded scientific research to support the restoration of the Greater Everglades area and to supply decision makers and resource mangers with sound data on which to base their actions. However, none of the research and resulting data is useful if it can?t be discovered, can?t be assessed for utility in an application, can?t be accessed, or is in an undetermined format. The decision was made early in the USGS Place-Based Studies (PBS) program to create a ?one-stop? entry for information and data about USGS research results. To facilitate the discovery process some mechanism was needed to allow standardized queries about data. The FGDC metadata standard has been used to document the South Florida PBS data from the beginning.

Stapleton, Jo Anne; Sonenshein, Roy

2004-01-01

441

Water-resources investigations of the U.S. Geological Survey, New Mexico District, fiscal year 1978  

USGS Publications Warehouse

This is the first of an annual series of reports in which the program of the New Mexico District, U.S. Geological Survey, Water Resources Division, will be summarized. This report, which is for fiscal year 1978, should be useful to cooperating agencies and to the users of water data in that it summarizes and gives the status of the basic data collection program and all current studies of the Water Resources Division in New Mexico. The water-resource programs of the District are composed of surface water, ground water, and water quality disciplines. As of April 1978 the District had 36 active projects, 30 reports for release, and answered about 5,000 requests for water related information. (Woodard-USGS)

Soule, Pat LeRoy; Wilkins, D. W.

1979-01-01

442

Water-resources activities in Utah by the U.S. Geological Survey, July 1, 1987 to September 30, 1988  

USGS Publications Warehouse

This report contains information on well construction, groundwater withdrawals from wells, water level changes, and related changes in precipitation and streamflow in Utah. Supplementary data such as graphs showing chemical quality of water and maps showing water level contours are included in reports of this series only for those years or areas for which applicable data are available and are important to a discussion of changing groundwater conditions. The report includes individual discussions of selected major areas of groundwater development in the State for the period from the spring of 1988 to the spring of 1989. Much of the data used in the report were collected by the Geological Survey in cooperation with the Division of Water Rights, Utah Department of Natural Resources. (USGS)

Dragos, Stefanie L., (compiler); Gates, Joseph Spencer

1989-01-01

443

U.S. Department of the Interior April 2013 U.S. Geological Survey  

E-print Network

to regulate the activities of independent smelters and limits the shipment of tin ingots by only allowing% export royalty and provide technical verification by independent surveying firms prior to shipment, Demerger update--Demerger effective: London, United Kingdom, Cookson Group news release, December 19

444

Reports and maps of the geological survey released only in the open files, 1966  

Microsoft Academic Search

This circular contains a list of maps and reports released by the U.S. Geol. Survey during 1966 that are available for public inspection in the open files. These maps and reports may be consulted at the indicated depositories, and copies may be made upon request (at the requestor's expense). The reports are arranged alphabetically by author; each report is preceded

B. A. Weld; M. S. Griffin; G. W. Brett

1967-01-01

445

Bibliography and index of U.S. Geological Survey trace elements and related reports through June 1956  

USGS Publications Warehouse

This bibliography supersedes TEI-500, "U. S. Geological Survey Trace Elements and related reports through 1954." Part I is a numerical list of U. S. Geological Survey Trace Elements Investigations and Memorandum reports. This part lists reports that have been transmitted to the U. S. Atomic Energy Comission and also reports in preparation (followed by an asterisk) for which tentative titles were available on June 30, 1956. If a report or part of a report has been published, the fact is indicated by the abbreviation of the medium of publication. (See also Part II.) Part II is a reference guide to Trace Elements and related reports that are available to the public. (Part II supersedes Part I of Bulletin 1019-B.) These reports are grouped according to type of publication or release. If a report or part of a report has been published in more than one form, corss-references indicate the other forms of publication. Publications in preparation or in press on June 30, 1956, are designated by an asterisk. Part III is an author index. The words "with" and "and" are used to indicate seniority of authorship. For example, a listing of Black and White indicates that Black is the senior author. A listing of Black with White indicates that White is the senior author. Part IV is an index for finding reports on specific areas or subjects. Information for the index was taken from titles, tables of contents, and abstracts of unpublished reports and from titles of published reports. The index in TEI-500 was used as a guide.

Soister, Paul E.; Conklin, Dora R.; Bowman, Mary D.

1956-01-01

446

The Perspective of Rural Physicians Providing Abortion in Canada: Qualitative Findings of the BC Abortion Providers Survey (BCAPS)  

PubMed Central

Background An increasing proportion of Canadian induced abortions are performed in large urban areas. For unknown reasons the number of rural abortion providers in Canadian provinces, such as British Columbia (BC), has declined substantially. This study explored the experiences of BC rural and urban physicians providing abortion services. Methods The mixed methods BC Abortion Providers Survey employed self-administered questionnaires, distributed to all known current and some past BC abortion providers in 2011. The optional semi-structured interviews are the focus of this analysis. Interview questions probed the experiences, facilitators and challenges faced by abortion providers, and their future intentions. Interviews were transcribed and analyzed using cross-case and thematic analysis. Results Twenty interviews were completed and transcribed, representing 13/27 (48.1%) rural abortion providers, and 7/19 (36.8%) of urban providers in BC. Emerging themes differed between urban and rural providers. Most urban providers worked within clinics and reported a supportive environment. Rural physicians, all providing surgical abortions within hospitals, reported challenging barriers to provision including operating room scheduling, anesthetist and nursing logistical issues, high demand for services, professional isolation, and scarcity of replacement abortion providers. Many rural providers identified a need to fly under the radar in their small community. Discussion This first study of experiences among rural and urban abortion providers in Canada identifies addressable challenges faced by rural physicians. Rural providers expressed a need for increased support from hospital administration and policy. Further challenges identified include a desire for continuing professional education opportunities, and for available replacement providers. PMID:23840588

Dressler, Jennifer; Maughn, Nanamma; Soon, Judith A.; Norman, Wendy V.

2013-01-01