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1

GEOLOGICAL SURVEY OF CANADA OPEN FILE 7037  

E-print Network

GEOLOGICAL SURVEY OF CANADA OPEN FILE 7037 Total arsenic concentrations of lake sediments near.T., Mosstajiri, T., Hadlari, T., and Falck, H., 2012. Total arsenic concentrations of lake sediments near to contribute to the determination of natural variability of arsenic in freshwater sediments in the Yellowknife

Patterson, Timothy

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 to Terrestrial Impact Craters, LPI Tech Rpt. 88-03. Lunar and Planetary Institute, Houston. 89 pp with the National Aeronautics and Space Administration #12;Contents Introduction 5 World Map of Impact Craters 9

Rathbun, Julie A.

3

REMOTE SENSING GEOLOGICAL SURVEY  

E-print Network

REMOTE SENSING IN GEOLOGICAL SURVEY OF BRAZIL August/2010 Mônica Mazzini Perrotta Remote Sensing Division Head #12;SUMMARY The Geological Survey of Brazil mission The Remote Sensing Division Main remote sensing data used in CPRM geologic projects Future perspective: the Spectral Library of Geological Survey

4

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.

5

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.

6

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.

7

Louisiana Geological Survey  

NSDL National Science Digital Library

The Louisiana Geological Survey, located at Louisiana State University, developed this website to promote its goal to provide geological and environmental data that will allow for environmentally sound natural resource development and economic decisions. Users can find general information about the Survey's mission, staff, plan, and history. The website features the research and publications of the Basin Research, Cartographic, Coastal, Geologic Mapping, and Water and Environmental sections. Researchers can discover stratigraphic charts of Louisiana, information on lignite resources, and other geologic data.

8

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)

U.S. Geological Survey

1978-01-01

9

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)

U.S. Geological Survey

1976-01-01

10

Geological Survey Program  

NSDL National Science Digital Library

If your research or interests lie in the geology of South Dakota, then the state's Geological Survey Program Web site is for you. Offered are online publications and maps, a geologic reference database, a lithologic logs database, digital base maps, a water quality database, and several other quality information sources worth checking out.

11

South Carolina Geological Survey  

NSDL National Science Digital Library

The South Carolina Geological Survey (SCGS) homepage contains information about state mapping, education and outreach programs, and recent news. For educators, there is the Earth Science education series of publications which includes presentations and page-size graphics on such topics as earthquakes, plate tectonics, geologic time, fossils, and others. Other materials include information on mineral resources, links to organizations in and about South Carolina geology, the South Carolina core repository, the Geologic Map of South Carolina, and others.

12

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)

U.S. Geological Survey

1982-01-01

13

Arkansas Geological Survey  

NSDL National Science Digital Library

The Arkansas Geological Survey (AGS) homepage aims to develop and provide knowledge of the geology and hydrogeology of the State, and to stimulate development and effective management and utilization of the mineral, fossil-fuel, and water resources of Arkansas while protecting the environment. The AGC collects and disperses geologic data consisting of geologic maps, historical data concerning resources, and various datasets concerning water, fossil-fuel, and mineral resources of Arkansas. The site contains publications that can be ordered, sections about Arkansas geology, a list of mineral producers of Arkansas, and reports on mineral resources.

14

North Carolina Geological Survey  

NSDL National Science Digital Library

The North Carolina Geological Survey (NCGS) examines, describes, and maps the state's geology and mineral resources and publishes reports and maps. The site contains lists of publications, maps, aerial photographs, frequently asked questions about North Carolina geology, and mineral and professional information. Project Earth Science is designed to provide relevant and accurate earth science education information for the state's high school students and earth/environmental science teachers.

15

Pennsylvania Geological Survey  

NSDL National Science Digital Library

This is the homepage of the Pennsylvania Geological Survey. Users can access digital maps, data, and Geographic Information Systems (GIS), information on economic resources, and information on field mapping in the state. Classroom resources include a set of lesson plans on Pennsylvania geology; 'Rock Boxes', a set of rock samples which can be ordered; information on mineral collecting; and a series of educational publications, page-sized maps, and the 'Trail of Geology' park guide.

16

California Geological Survey - Landslides  

NSDL National Science Digital Library

This page from the CA Geological Survey (CGS) presents information on landslides as well as maps and products of various past and present CGS programs to map and respond to landslides in the state of California, including the Forest and Watershed Geology Program, the Seismic Hazards Zonation Program, the Caltrans Highway Corridor Mapping project, and the Landslide Map Index.

California Geological Survey

17

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.

18

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.

19

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.

20

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.

21

Florida Geological Survey  

NSDL National Science Digital Library

The Florida Geological Survey (FGS) homepage provides data, research materials and interpretations on aquifer systems, geologic frameworks, landforms, energy and non-energy mineral resources, and geologic hazards which which can be used to address issues of conservation and protection, sustainable development, human health protection, and implementation of successful environmental regulatory programs. Educational materials for earth science and the pre-historic development of the state are also provided. These include topics such as sinkholes, data and maps, rock and mineral identification, minerals, hydrogeology, and fossils.

22

Kentucky Geological Survey  

NSDL National Science Digital Library

In 1996 the Education Committee of the Kentucky Geological Survey, in conjunction with the Kentucky Society of Professional Geologists, established the Earth Science Education Network (ESEN). The network provided a group of geologists who served as resource persons for teachers, but has now been expanded to provide resources from around the globe. While primarily focusing on the geology of Kentucky, many of the online resources are applicable for educators throughout the U.S. There are links to Earth science topics and important websites, handouts and instructions for classroom demonstrations and activities, and also interesting information about Kentucky geology and publications.

23

The Barren Lands: J.B. Tyrrell's Expeditions for the Geological Survey of Canada, 1892-1894  

NSDL National Science Digital Library

J.B. Tyrrell was a famous Canadian geologist who went on numerous expeditions surveying a large portion of central and eastern Canada in the early 1890s. During these journeys, he and his colleagues created a massive cache of materials that documented the regions they traversed, and the University of Toronto's Thomas Fisher Rare Book Library has placed over 5,000 items related to these expeditions online, including images from field notebooks, photographs, maps, and published reports. The digital collection presented here is primarily composed of material describing the Barren Lands expeditions of 1893 and 1894, along with some additional materials from the Hudson Bay expeditions of 1885 and 1900. Searching the collection is facilitated by a search engine that allows full-text searches, in tandem with selecting by type of material, such as diaries, letters, maps, and photographs. Perhaps the finest features of the site are the interactive maps of the four main expeditions, which allow users to click on different parts of the maps and obtain the documents that relate to each geographical area of the journey.

2001-01-01

24

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.

25

Minnesota Geological Survey  

NSDL National Science Digital Library

Established in 1872 by the State of Minnesota as part of the University of Minnesota, the Minnesota Geological Survey (MGS) serves the people of Minnesota by providing systematic geoscience information to support the stewardship of water, land, and mineral resources. This rather lovely digital collection brings together a record of all items published by the MGS since its creation. Here, visitors will find documents, reports, maps, and GIS data for online viewing or downloading as well. The thematic collections here include the Aeromagnetic Map Series, the annual reports of the Minnesota Geological and Natural History Survey, and the wonderful county atlas series. Visitors with a penchant for geology, natural history, and geography will find much to enjoy here.

26

Minnesota Geological Survey  

NSDL National Science Digital Library

The Minnesota Geological Survey (MGS) was established in 1872 as part of the University of Minnesota. The function of the MGS is to serve "the people of Minnesota by providing systematic geoscience information to support stewardship of water, land, and mineral resources." This website from the Digital Conservancy at the University of Minnesota provides access to all of items published by the MGS. The items are contained within the Collections area, and visitors will find headings here such as "Geology of Minnesota Parks," "County Atlas Series," and the "Bulletin of the Minnesota Geological and Natural History Survey." First-time visitors can check out the Recent Submissions area on the right-hand side of the page to look over some new findings, including hydrogeological maps of different counties around the state. One item that should not be missed is the "Geology of Minnesota: A Centennial Volume" from 1972. It's a tremendous volume and one that cannot be ignored by students of the physical landscape and geological history of the state.

2012-09-21

27

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)

U.S. Geological Survey

1975-01-01

28

Maryland Geological Survey  

NSDL National Science Digital Library

The Maryland Geological Survey (MGS) provides excellent information about the geology of the Old Line State, along with public reports and updates on various ongoing projects. The homepage features live earthquake data and maps that deal with oyster habitat restoration projects, fact sheets, and new reports on lead concentrations in well water across the state. The Publications area contains dozens of maps (such as that of the "Maryland Gold District") and links to Popular Publications such as "Caves of Maryland" and "Baltimore Building Stones Tour." The Data section is also quite useful, offering a number of informative data sets on sediment distribution in the Chesapeake Bay and Baltimore Harbor. Finally, the Education area contains an "Ask a Geologist" link that's quite useful for getting answers to Earth-based queries.

29

British Geological Survey: Geomagnetism  

NSDL National Science Digital Library

The British Geological Survey illustrates its work monitoring the earth's magnetic field in the UK at this website. Users can learn about the six observatories located in the Atlantic and the UK. Using the Grid Magnetic Angle Calculator, visitors can determine the angle between the British National grid north and the magnetic north. The website features Mercator projects created with the World Magnetic Model, geomagnetic data for the academic community, space weather services for industry, and more. Students can find tutorials about the Earth's magnetic field, magnetic reversals, and magnetic storms.

30

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,

RÉJEAN COUTURE; DOMINIQUE GAUVREAU; J. ROBERT BÉLANGER

31

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. Bélanger

2003-01-01

32

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

U.S. Geological Survey

1966-01-01

33

U.S. GEOLOGICAL SURVEY  

E-print Network

Use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. Copies of this report can be obtained from: For additional information,

Maj Jeff Cornell (afcee; Mario Ierardi (afbca; Dr. Javier Santillan (afcee; Lt. Col; Daniel L. Welch; Kathy Davies; Epa Region; Richard G. Mach, Jr.; (southwest Division; Johnette Shockley; Paul M. Bergstr; South Carolina; Chris A. Guerre (california; David Randolph (tennessee; A. Vroblesky; Charles G. Groat

34

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.

35

Manitoba Geological Survey  

NSDL National Science Digital Library

This site offers materials on Manitoba geology and minerals, mining and mineral exploration, a Digital Elevation Model of Southern Manitoba (DEMSM) landforms including oblique views, an interactive GIS map gallery of minerals and geology, a study of paleofloods in the Red River Basin including photographs illustrating how scientists delineated the paleofloods, and information on the Manitoba Protected Areas Initiative. Some maps and reports are available to download.

36

Geological Survey of Tanzania  

NSDL National Science Digital Library

The United Republic of Tanzania was formed in 1964 by the merger of Tanganyika and Zanzibar and is located on the eastern coast of Africa between the Great Lakes of the Rift Valley. Tanzania has a diverse mineral resource base that includes gold and base metals, diamond-bearing kimberlites, nickel, cobalt, copper, coal resources, and a variety of industrial minerals and rocks such as kaolin, graphite, and dimension stone. This web site was created by the Mineral Resources Department (MRD), a subsidiary of the Ministry of Energy and Minerals, and contains basic information about the country's logistical environment, mineral sector policy, geological database, and more.

37

US Geological Survey World Energy Report  

NSDL National Science Digital Library

Released on March 24, 2000, the US Geological Survey's World Energy Project Preliminary Report "estimates the volume of oil and gas, exclusive of the U.S., that may be added to the world's reserve in the next 30 years." The preliminary report contains a world assessment showing there is more oil and gas in the Middle East and in offshore areas of western Africa and eastern South America than figured in previous assessments, and less oil and gas in Canada and Mexico, and significantly less natural gas in the Former Soviet Union. "The USGS World Petroleum Assessment 2000 is the first of its kind to provide a rigorous geologic foundation for estimating undiscovered energy resources for the world."

2000-01-01

38

US Geological Survey Fact Sheets  

NSDL National Science Digital Library

The US Geological Survey (USGS) Fact Sheets Web site summarizes research and investigations done by the agency and provides details about particular activities. The sheets are organized by theme, including resources, hazards, environment, information management, by individual state, and by scientific discipline. The fact sheets give basic summations of the research and provide links to more detailed pages for those seeking further information.

39

Recent U.S. Geological Survey Studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada-Results of a 5-Year Project  

USGS Publications Warehouse

This report presents summary papers of work conducted between 2002 and 2007 under a 5-year project effort funded by the U.S. Geological Survey Mineral Resources Program, formerly entitled 'Tintina Metallogenic Province: Integrated Studies on Geologic Framework, Mineral Resources, and Environmental Signatures.' As the project progressed, the informal title changed from 'Tintina Metallogenic Province' project to 'Tintina Gold Province' project, the latter being more closely aligned with the terminology used by the mineral industry. As Goldfarb and others explain in the first chapter of this report, the Tintina Gold Province is a convenient term used by the mineral exploration community for a 'region of very varied geology, gold deposit types, and resource potential'. The Tintina Gold Province encompasses roughly 150,000 square kilometers, bounded by the Kaltag-Tintina fault system on the north and the Farewell-Denali fault system on the south. It extends westward in a broad arc, some 200 km wide, from northernmost British Columbia, through the Yukon, through southeastern and central Alaska, to southwestern Alaska. The climate is subarctic and, in Alaska, includes major physiographic delineations and ecoregions such as the Yukon-Tanana Upland, Tanana-Kuskokwim Lowlands, Yukon River Lowlands, and the Kuskokwim Mountains. Although the Tintina Gold Province is historically important for some of the very first placer and lode gold discoveries in northern North America, it has recently seen resurgence in mineral exploration, development, and mining activity. This resurgence is due to both new discoveries (for example, Pogo and Donlin Creek) and to the application of modern extraction methods to previously known, but economically restrictive, low-grade, bulk-tonnage gold resources (for example, Fort Knox, Clear Creek, and Scheelite Dome). In addition, the Tintina Gold Province hosts numerous other mineral deposit types, possessing both high and low sulfide content, which are not currently in development.

Gough, Larry P.; Day, Warren C.

2010-01-01

40

Christopher U.S. Geological Survey  

E-print Network

Christopher Magirl U.S. Geological Survey 934 Broadway Suite 300 Tacoma, Washington 98402 Phone Research Hydrologist U.S. Geological Survey, Tacoma, Washington. September 2009 ­ present · Analyzing.S. Geological Survey, Tacoma, Washington. July 2008 ­ September 2009 · Developed geomorphic and GIS methodology

41

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

42

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

43

U. S. Geological Survey Library  

NSDL National Science Digital Library

The United States Geological Survey (USGS) Library is the largest earth science library in the world. The library serves the research needs of USGS scientists throughout the nation and provides information to other organizations and individuals in the areas of geology, hydrology, cartography, biology, and related fields. USGS libraries are located in Reston, Virginia, Denver, Colorado, Menlo Park, California, and Flagstaff, Arizona. Some of the library holdings are available on-line, while others can be purchased from USGS, ordered via an interlibrary loan, or attained from one of the four library locations directly. The library home page provides links to search engines for USGS publications, photographs, maps, etc. Users can search various databases to find what they need. These databases include: the Geographic Names Information System database, the Minerals Information Collection, the National Geologic Map Database, and a database of purchased journals held by the library. Users can also search the library's catalog, and can post questions to a librarian via the Ask a Librarian link.

44

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

45

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 Canada geese (Branta canadensis maxima) in northeastem South Dakota. These surveys (:onsist of circling

46

California Geological Survey-Educational Resources Center  

NSDL National Science Digital Library

How do we understand the Earth and its complexity? It's a crucial question in our age. Fortunately, the California Geological Survey is interested in these matters. The Survey's Educational Resources Center site features California geology maps, teachers' aids, and "California Geology 101." This last resource is an interactive index of online geologic field trip guides and related sites. The resources include an exploration of the 1906 San Francisco Earthquake, replies to questions posed by the "Earthquake DOC," and a glossary of rock and mineral terminology. The maps should not be missed either, as they include a fault activity map of California and a detailed map of the Golden State's geomorphic provinces.

2007-01-01

47

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

48

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

U.S. Geological Survey

1966-01-01

49

USGS CIRCULAR 938 U.S. GEOLOGICAL SURVEY  

E-print Network

USGS CIRCULAR 938 '· 0 #12;#12;U.S. GEOLOGICAL SURVEY Highlights in Marine Research Samuel H.S. Geological Survey Dallas L. Peck, Director Library of Congress Cataloging in Publication Data Highlights in marine research of the U.S. Geological Survey. (U.S. Geological Survey Circular 938) Supt. of Docs. no

50

Maine Geological Survey: Online Educational Materials  

NSDL National Science Digital Library

The Maine Geological Survey (MGS) has crafted a fine set of materials for those interested in learning more about the state's natural history via virtual tours, lesson plans, and maps. First up is the Virtual Tour of Maine Geology, which includes photographs of bedrock geology, geologic hazards, mineral collecting, and surficial geology. The Lesson Plans area contains 51 lessons, including "Igneous Rock Identification" and "Composition of Topsoil." A number of MGS maps are available online in the Maps and Publications area. The site includes a Bibliography of Maine Geology, which contains over 12,000 references. Additionally, the site contains a link to the MGS publications page, which has official state of Maine wall maps available for purchase.

51

Maine Geological Survey: Online Educational Materials  

NSDL National Science Digital Library

The Maine Geological Survey (MGS) has crafted a fine set of materials for those interested in learning more about the state's natural history via virtual tours, lesson plans, and maps. First up is the Virtual Tour of Maine Geology, which includes photographs of bedrock geology, geologic hazards, mineral collecting, and surficial geology. The Lesson Plans area contains 51 lessons, including "Igneous Rock Identification" and "Composition of Topsoil." A number of MGS maps are available online in the Maps and Publications area. The site includes a Bibliography of Maine Geology, which contains over 12,000 references. Additionally, the site contains a link to the MGS publications page, which has official state of Maine wall maps available for purchase.

2009-12-08

52

Matching magnetic trends and patterns across the Tintina fault, Alaska and Canada--evidence for offset of about 490 kilometers: Chapter C in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project  

USGS Publications Warehouse

Magnetic anomaly patterns on opposite sides of the mapped Tintina fault in eastern Alaska and western Canada show an apparent offset of about 490 kilometers (km), probably of Eocene age. This estimate is compared with previous geologically based estimates of 400 to 430 km and paleomagnetically based estimates of more than 1,100 km. The apparent geophysical alignments have geologic implications that deserve further study.

Saltus, Richard W.

2007-01-01

53

Alaska Division of Geological and Geophysical Surveys  

NSDL National Science Digital Library

This is the homepage of Alaska's geological and geophysical survey, the agency responsible for collecting and distributing information about the state's geologic resources and hazards. Materials include numerous downloadable geologic publications, geophysical, geochemical, and GIS datasets, maps, photos, and news articles. The 'Guide to Alaska Geologic and Mineral Information', a document available at the site, is a source for basic and specialized research into the geology of Alaska, and the resources and issues involved in exploration for metallic mineral deposits in Alaska. It is designed to give users a broad overview of the many resources available to them from library facilities and holdings to State and Federal agencies that publish research and oversee mining and exploration activities to online databases, publications, and catalogs.

54

Illinois State Geological Survey: Teacher Resources for Geology  

NSDL National Science Digital Library

The Illinois State Geological Survey (ISGS) has worked hard to create this vast array of materials designed for teachers working in geology and the earth sciences. The site is divided into two primary areas: "ISGS Teacher Resources" and "Other Teacher Resources." The "Ask An Expert" section is a good place to start, and it contains an A to Z archive of questions (and answers) that have been posed so far. Visitors are welcome to explore topics here like isotope geochemistry, limestone petrography, and also "Gold in Illinois." Also, this area contains links to teaching geology, which are quite useful. The "Other Teacher Resources" area brings together links to germane sites, such as the Denver Earth Science Project, NASA's meteorology home page, and online guides to landforms from the U.S. Bureau of Land Management.

55

US GEOLOGICAL SURVEY WELL WATERLEVEL DATA, NC  

EPA Science Inventory

USGS well waterlevel data for NC wells, as provided by North Carolina Department of Environment and Natural Resources (NC-DENR). The zipped file contains 2 FoxPro databases: usgs.dbf - This database contains the well construction information for the US Geological Survey's moni...

56

The United States Geological Survey Library System  

USGS Publications Warehouse

The U.S. Geological Survey Library, established in 1882, is one of the largest earth science libraries in the world. The Library System consists of the headquarters library in Reston, Virginia, and three branch libraries in Denver, Colorado; Flagstaff, Arizona; and Menlo Park, California

U.S. Geological Survey

1994-01-01

57

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.

58

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.

59

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.

2012-02-24

60

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

E-print Network

of semifabricated material increased by 9%, and aluminum scrap exports decreased by 13%. China, Mexico, and Canada For information, contact: E. Lee Bray, Aluminum Commodity Specialist U.S. Geological Survey 989 National Center://minerals.usgs.gov/minerals ALUMINUM IN JUNE 2013 Domestic primary aluminum production in June 2013 was 165,000 metric tons (t

61

U.S. Geological Survey Photographic Library  

NSDL National Science Digital Library

Over its long history, the U.S. Geological Survey has taken many, many, photographs. In the course of their various geological studies and explorations, persons in their employ have documented volcanic explosions, mining projects, and dams. This website contains 30,000 photographs from 1868 to the present, and many of these images have never been published in any form. New users can get started by clicking one of the subject areas on the left-hand side of the homepage. These areas include "Earthquakes", "Mines, Mills, Quarries", and "Mount St. Helens". Visitors can also perform basic keyword searches, and they might wish to try out words like "dolomite", "karst", or "Colorado". Also, the site has an excellent "Portrait Gallery", which contains images of famed geological pioneers, such as Chares Van Hise.

62

United States Geological Survey: Contaminant Biology Program  

NSDL National Science Digital Library

This is the homepage of the United States Geological Survey's (USGS) Contaminant Biology Program, whose mission is to investigate the effects and exposure of environmental contaminants (for example, mercury) on the living resources of the United States. The site features links to information on the program's projects, grouped under chemistry and toxicology; contaminated habitats; and monitoring and assessment. There are also links to news items and events, publications, links to biology science centers and cooperative research units, and links to related websites.

63

U.S. Geological Survey Geologic Carbon Sequestration Assessment  

NASA Astrophysics Data System (ADS)

The Energy Independence and Security Act of 2007 authorized the U.S. Geological Survey (USGS) to conduct a national assessment of potential geological storage resources for carbon dioxide (CO2) in consultation with the U.S. Department of Energy (DOE), the U.S. Environmental Protection Agency (EPA) and State geological surveys. To conduct the assessment, the USGS developed a probability-based assessment methodology that was extensively reviewed by experts from industry, government and university organizations (Brennan et al., 2010, http://pubs.usgs.gov/of/2010/1127). The methodology is intended to be used at regional to sub-basinal scales and it identifies storage assessment units (SAUs) that are based on two depth categories below the surface (1) 3,000 to 13,000 ft (914 to 3,962 m), and (2) 13,000 ft (3,962 m) and greater. In the first category, the 3,000 ft (914 m) minimum depth of the storage reservoir ensures that CO2 is in a supercritical state to minimize the storage volume. The depth of 13,000 ft (3,962 m) represents maximum depths that are accessible with average injection pressures. The second category represents areas where a reservoir formation has potential storage at depths below 13,000 ft (3,962 m), although they are not accessible with average injection pressures; these are assessed as a separate SAU. SAUs are restricted to formation intervals that contain saline waters (total dissolved solids greater than 10,000 parts per million) to prevent contamination of protected ground water. Carbon dioxide sequestration capacity is estimated for buoyant and residual storage traps within the basins. For buoyant traps, CO2 is held in place in porous formations by top and lateral seals. For residual traps, CO2 is contained in porous formations as individual droplets held within pores by capillary forces. Preliminary geologic models have been developed to estimate CO2 storage capacity in approximately 40 major sedimentary basins within the United States. More than 200 SAUs have been identified within these basins. The results of the assessment are estimates of the technically accessible storage resources based on present-day geological and engineering technology related to CO2 injection into geologic formations; therefore the assessment is not of total in-place resources. Summary geologic descriptions of the evaluated basins and SAUs will be prepared, along with the national assessment results. During the coming year, these results will be released as USGS publications available from http://energy.usgs.gov. In support of these assessment activities, CO2 sequestration related research science is being conducted by members of the project. Results of our research will contribute to current and future CO2 storage assessments conducted by the USGS and other organizations. Research topics include: (a) geochemistry of CO2 interactions with subsurface environments; (b) subsurface petrophysical rock properties in relation to CO2 injection; (c) enhanced oil recovery and the potential for CO2 storage; (d) storage of CO2 in unconventional reservoirs (coal, shale, and basalt); (e) statistical aggregation of assessment results; and (f) potential risks of induced seismicity.

Warwick, P. D.; Blondes, M. S.; Brennan, S.; Corum, M.; Merrill, M. D.

2012-12-01

64

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

65

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

66

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.

67

Idaho Geological Survey: Earth Science Education  

NSDL National Science Digital Library

The Idaho Geological Survey (IGS) operates and maintains the Earth Science Education Web site, which contains many interesting original and outside linked resources for students and teachers. The activities offered by IGS include topics on astronomy, earthquakes, general earth science, hydrogeology, landslides, volcanoes, and weather and climate. Other links on the site are geared toward professional development for educators, including a curriculum development project and an online clearinghouse publication of professional development courses, workshops, and conferences. Although the layout and design of it make it a bit difficult to use efficiently, the site contains many quality features and is worth exploring.

68

US Geological Survey Volcano Hazards Program  

NSDL National Science Digital Library

The US Geological Survey Volcano Hazards Program website presents its objectives "to advance the scientific understanding of volcanic processes and to lessen the harmful impacts of volcanic activity." The public can explore information on volcano monitoring, warning schemes, and emergency planning. Students and educators can find out about the types, effects, location, and history of volcano hazards. The website offers recent online volcano reports and maps, volcano factsheets, videos, and a photo glossary. Teachers can find online versions of many educational volcano-related books and videos. The website features the volcanic observatories in Alaska, the Cascades, Hawaii, Long Valley, and Yellowstone.

69

U. S. Geological Survey: Topographic Science  

NSDL National Science Digital Library

The U.S. Geological Survey (USGS) Topographic Science Program includes research and applications that result in improved seamless topographic datasets, advanced elevation technology research, raster and vector technique development research, and development of internet presence. Users can access the USGS National Elevation Dataset (NED), currently the highest-resolution, best quality elevation data available across the United States (raster format); Elevation Resources for National Applications (EDNA), a multi-layered database derived from a version of NED which has been hydrologically conditioned for improved hydrologic flow representation; and information on LIDAR data research, other research and datasets, and links to related publications.

70

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

NASA Astrophysics Data System (ADS)

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 capital, Ottawa (Ontario). Urban geology studies rely on diverse branches of earth sciences such as hydrology, engineering geology, geochemistry, stratigraphy, and geomorphology in order to build a three-dimensional model of the character of the land and to explain the geological processes involved in the dynamic equilibrium of the local environment. Over the past few years, TSD has compiled geoscientific information derived from various sources such as borehole logs, geological maps, hydrological reports and digital elevation models, compiled it in digital format and stored it in georeferenced databases in the form of point, linear, and polygonal data. This information constitutes the geoscience knowledge base which is then processed by Geographic Information Systems (GIS) to integrate the various sources of information and produce derived graphics, maps and models describing the geological infrastructure and response of the geological environment to human activities. Urban Geology of Canada's National Capital Area is a pilot project aiming at developing approaches, methodologies and standards that can be applied to other major urban centres of the country, while providing the geoscience knowledge required for sound regional planning and environmental protection of the National Capital Area. Based on an application developed by ESRI (Environmental System Research Institute), namely ArcIMS, the TSD has customized this web application to give free access to geoscience information of the Ottawa/Outaouais (Ontario/Québec) area including geological history, subsurface database, stratigraphy, bedrock, surficial and hydrogeology maps, and a few others. At present, each layer of geospatial information in TSD's interactive map viewer is connected to simple independent flat files (i.e. shapefiles), but it is also possible to connect GEOSERV to other types of (relational) databases (e.g. Microsoft SQL Server, Oracle). Frequent updating of shapefiles could be a cumbersome task, when new records are added, since we have to completely rebuild the updated shapefiles. However, new attributes can be added to existing shapefiles easily. At present, the updating process can not be done on-the-fly; we must stop and restart the updated MapService if one of its shapefiles is changed. The public can access seventeen MapServices that provide interactive tools that users can use to query, zoom, pan, select, and so on, or print the map displayed on their monitor. The map viewer is light-weight as it uses HTML and Javascript, so end users do not have to download and install any plug-ins. A free CD and a companion web site were also developed to give access to complementary information, like high resolution raster maps and reports. Some of the datasets are available free of charge, on-line.

Giroux, D.; Bélanger, R.

2003-04-01

71

Wild Bird Influenza Survey, Canada, 2005  

PubMed Central

Of 4,268 wild ducks sampled in Canada in 2005, real-time reverse transcriptase–PCR 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

72

State Geological Surveys and Related Agencies in the United States  

NSDL National Science Digital Library

This web page is part of the California Department of Conservation, Division of Mines and Geology Web site. It provides a list of state geological surveys and related organizations in the United States (and Puerto Rico). For all of these agencies, mail addresses as well as known e-mail and Internet links are provided. Links are also provided to pages on geologic mapping, geologic hazards, earthquake engineering, mineral resources, and technical information and publications.

73

Ontario Power Generation's Proposed Deep Geologic Repository, Tiverton, Ontario, Canada  

NASA Astrophysics Data System (ADS)

Ontario Power Generation is proposing to develop a Deep Geologic Repository (DGR) for the long-term management of its Low and Intermediate Level Radioactive Waste (L&ILW) at the Bruce site located near Tiverton, Ontario, 225 km northwest of Toronto. The shaft accessed repository, as envisioned, would accommodate 200,000 m3 (as packaged) of L&ILW in emplacement rooms excavated at a depth of 680 m within the Ordovician age argillaceous limestone Cobourg Formation. The Bruce site is underlain by an approximate 860 m thick Paleozoic sedimentary sequence comprised of near horizontally bedded carbonates, shales, evaporates and sandstones, Devonian to Cambrian in age, overlying crystalline basement rocks. Regional and site-specific geoscientific studies to verify the suitability of the Bruce site to host the DGR were initiated in 2006. The focus for the geoscientific investigations has been on gathering data to develop and test an understanding of the evolution and stability of the geologic, hydrogeologic, hydrogeochemical and geomechanical environ as it relates to demonstrating repository safety. Scheduled for completion in 2010, the interim results, which have included the drilling, coring and testing of 4 deep boreholes, are providing evidence of a predictable geosphere with a deep seated (>400 m), low permeability (K < 10-13 m sec-1), low porosity (0.01-0.08), saline (TDS > 250 gm l-1) groundwater regime that is ancient and resilient to external perturbations (e.g. glaciation). Work program activities in this regard have included, among others, detailed studies of rock core lithology, mineralogy and petrophysics, rock matrix pore fluid and groundwater characterisation, in-situ rock mass hydraulic testing, geomechanical rock core testing, 2-D seismic reflection surveys and long-term hydraulic borehole instrumentation. These data, in addition to regional and site-scale hydrogeologic modelling of the sedimentary sequence that among other aspects is examining groundwater system evolution through an understanding of long-term environmental tracer migration and observed abnormally elevated and depressed formation pore pressures, are to be integrated as part of a Geosynthesis document for the project supporting a case for safety. This presentation will provide an overview of the DGR program and the role of geoscience as it is contributing to an understanding of far-field barrier performance and long-term DGR safety.

Jensen, M.

2009-05-01

74

43 CFR 3836.13 - What are geological, geochemical, or geophysical surveys?  

Code of Federal Regulations, 2012 CFR

... § 3836.13 What are geological, geochemical, or geophysical surveys? (a) Geological surveys are surveys of the geology of mineral deposits. These are done by, among other things, taking mineral samples, mapping rock units, mapping...

2012-10-01

75

43 CFR 3836.13 - What are geological, geochemical, or geophysical surveys?  

Code of Federal Regulations, 2014 CFR

... § 3836.13 What are geological, geochemical, or geophysical surveys? (a) Geological surveys are surveys of the geology of mineral deposits. These are done by, among other things, taking mineral samples, mapping rock units, mapping...

2014-10-01

76

43 CFR 3836.13 - What are geological, geochemical, or geophysical surveys?  

Code of Federal Regulations, 2013 CFR

... § 3836.13 What are geological, geochemical, or geophysical surveys? (a) Geological surveys are surveys of the geology of mineral deposits. These are done by, among other things, taking mineral samples, mapping rock units, mapping...

2013-10-01

77

43 CFR 3836.13 - What are geological, geochemical, or geophysical surveys?  

Code of Federal Regulations, 2011 CFR

... § 3836.13 What are geological, geochemical, or geophysical surveys? (a) Geological surveys are surveys of the geology of mineral deposits. These are done by, among other things, taking mineral samples, mapping rock units, mapping...

2011-10-01

78

Chapter 34: Geology and petroleum potential of the rifted margins of the Canada Basin  

USGS Publications Warehouse

Three sides of the Canada Basin are bordered by high-standing, conjugate rift shoulders of the Chukchi Borderland, Alaska and Canada. The Alaska and Canada margins are mantled with thick, growth-faulted sediment prisms, and the Chukchi Borderland contains only a thin veneer of sediment. The rift-margin strata of Alaska and Canada reflect the tectonics and sediment dispersal systems of adjacent continental regions whereas the Chukchi Borderland was tectonically isolated from these sediment dispersal systems. Along the eastern Alaska-southern Canada margin, termed herein the 'Canning-Mackenzie deformed margin', the rifted margin is deformed by ongoing Brooks Range tectonism. Additional contractional structures occur in a gravity fold belt that may be present along the entire Alaska and Canada margins of the Canada Basin. Source-rock data inboard of the rift shoulders and regional palaeogeographic reconstructions suggest three potential source-rock intervals: Lower Cretaceous (Hauterivian-Albian), Upper Cretaceous (mostly Turonian) and Lower Palaeogene. Burial history modelling indicates favourable timing for generation from all three intervals beneath the Alaska and Canada passive margins, and an active petroleum system has been documented in the Canning-Mackenzie deformed margin. Assessment of undiscovered petroleum resources indicates the greatest potential in the Canning-Mackenzie deformed margin and significant potential in the Canada and Alaska passive margins. ?? 2011 The Geological Society of London.

Houseknecht, D.W.; Bird, K.J.

2011-01-01

79

Facing Tomorrow's Challenges--U.S. Geological Survey Science in the Decade 20072017  

E-print Network

Facing Tomorrow's Challenges-- U.S. Geological Survey Science in the Decade 2007­2017 Circular 1309 tomorrow's challenges--U.S. Geological Survey science in the decade 2007­2017: U.S. Geological Survey Survey Science in the Decade 2007­2010 In 1996, the U.S. Geological Survey (USGS) drafted a strategic

80

The British Geological Survey's 'Slope Dynamics' Project  

NASA Astrophysics Data System (ADS)

The aim of the British Geological Survey (BGS)'s ‘Slope Dynamics' project is to provide observational data to slope stability modelling and zoning based on factors of safety obtained from a combination of geotechnical, geomorphological and oceanographic models. The project has been monitoring since 2001 the progress of terrestrial and coastal landslides within 'soft rock' formations in the UK. Recently, field observatories have been set up to allow a variety of methods, some traditional and others novel, to be applied to actively unstable natural slopes in order to achieve a thorough understanding of the substrata, the mass movement processes within them and their relationship to the environment and environmental change. Monitoring has been carried out at six or twelve monthly intervals at test sites on the east coast of England (Holderness and Norfolk) and at Hollin Hill in North Yorkshire. A key part of the project makes use of innovative terrestrial LiDAR methods to produce repeated accurate 3-D models of the ground surface, which then enable ‘change models' of landslide movements to be determined. This work was started in 2001 and is continuing. The BGS currently has two Riegl terrestrial laser scanners: the long-range LPM-i800HA and the very-long-range LPM-2K; the former being equipped with a digital camera. The multiple scans are positioned in the national grid co-ordinate system using high resolution dGPS. Together, these allow accurate observations to be made in remote and exposed locations without the need for potentially dangerous direct access to the steeper more unstable slopes. The coastal test sites, which have exhibited recession rates of between 2m and 9m per year, allow rapid changes to be monitored. Inland active landslides are less common but more suited to instrumentation and long-term monitoring. Results to date have revealed the relationships between landslide style and geology, and also the patterns and time scales of characteristic cycles of mass movement at coastal sites.

Hobbs, Peter; Foster, Claire; Pearson, Stephen; Jones, Lee; Pennington, Catherine; Jenkins, Gareth; Gibson, Andrew; Cooper, Anthony; Freeborough, Katherine

2010-05-01

81

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

82

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.

83

Magnetic gradiometer survey in granitic and sedimentary geology  

NASA Astrophysics Data System (ADS)

Earth's magnetic fields are recorded in the rocks. Iron-bearing minerals contain in many rocks act as tiny magnets. From igneous rocks to sedimentary rocks, all rocks have a magnetic record. Magnetic gradiometer survey was used to study the difference between magnetic field value of granite geology and sedimentary geology. Magnetic gradiometer survey can measure the local disturbances in the earth's magnetic field caused by the presence of magnetic materials. Thus, the quantification of variations and concentration of magnetic grains in rocks can be defined. Magnetic gradiometer survey is one of the components in geophysical magnetic method which utilized two sensors differs from magnetic survey with one sensor only. The study sites were in two different places with different geological area. The site with granitic geology was inside the campus of Universiti Sains Malaysia, Pulau Pinang while the site with sedimentary geology was in Gelang Patah, Johor. Both sites have almost the same pattern of survey lines with maximum of 10 meter station spacing which been conducted through 0.9 meter magnetic sensor spacing. Based on anomalies signature on the contour maps the qualitative interpretation is made while the quantitative interpretation is made based on data modeling. From the magnetic gradient contour map calculated and extrapolated from raw data, there is significance difference in value of magnetic field between granitic geology and sedimentary geology.

Ismail, Noer El Hidayah; Saad, Rosli; Nordiana, M. M.

2013-05-01

84

CFEPS [Canada-France Ecliptic Plane Survey]: The Details.  

NASA Astrophysics Data System (ADS)

We report the bulk properties of the Kuiper belt as observed by CFEPS, the Canada-France Ecliptic Plane Survey. CFEPS is based on images acquired as part of the Very-Wide component of the CFHT Legacy Survey, CFHTLS-VW. Over the previous three years CFHTLS-VW has repeatedly observed 400 square degrees of sky, with a cadence optimized for the detection of Kuiper belt objects [see presentation by Petit et al. at this meeting]. The driving goal of the CFEPS project is to provide a well characterized survey of the Kuiper belt that does not suffer from hidden 'tracking' bias and can therefore be used to test theoretical models of the Kuiper belt [see presentation by Gladman et al. at this meeting]. The CFEPS team is providing a survey simulator that will allow modelers to directly compare their orbit distribution prediction to that of the observed Kuiper belt. The bulk orbital properties of Kuiper belt objects as determined from the first years discovery and 3 years of tracking observations by the CFEPS Project: Tracking: 94 square degrees surveyed, 74 KBOs detected, 55 tracked to 4 through oppositions. Of the 55 objects tracked: 34 are classical belt objects, 17 are resonant objects, 2 are scattered disk members and 2 appear to be from the extended scattered disk. This work is based in part on data products produced at CFHT and the Canadian Astronomy Data Centre as part of the Canada-France-Hawaii Telescope Legacy Survey, a collaborative project of NRC and CNRS.

Kavelaars, J. J.; Jones, L.; Gladman, B.; Petit, J.; Parker, J.; CFEPS Team

2006-09-01

85

US Geological Survey World Energy Project  

NSDL National Science Digital Library

The World Energy Project's Website holds a wide collection of data including province assessment reports and maps showing geology, oil and gas fields, and geologic provinces (Africa, Arabian Peninsula, South Asia, South America, Former Soviet Union, Asia Pacific Region, and Iran). Finally, a report ranks the world's oil and gas provinces by known petroleum volumes.

86

Volcanic and geologic database projects of the Geological Survey of Japan (Invited)  

NASA Astrophysics Data System (ADS)

Geological Survey of Japan (GSJ) is presently implementing the GEO-DB project, which aims to integrate all kinds of geological information in GSJ. GSJ published more than 50 CD-ROM series and established more than 20 databases at the Research Information Database (RIO-DB) of the National Institute of Advanced Industrial Science and Technology (AIST). Presently, four volcanic databases are open to the public: (1) Quaternary volcano database (RIO-DB), (2) Active volcano database (RIO-DB), and (3) ASTER satellite image database of major volcanoes. The Quaternary volcano database contains information such as volcanic type, history, age and pictures of more than 300 Quaternary volcanoes in Japan. More detailed volcanic information will be added to the database in the near future. The active volcano database contains information of active volcanoes in Japan such as the catalog of eruptive events during the last 10,000 years and geological maps of active volcanoes. The ASTER satellite image database provides sequential ASTER satellite image datasets of major volcanoes in the world. Collaboration between Quaternary and active volcano databases and the VOGRIPA project is the next important activity at the Geological Survey of Japan. The Geological Survey of Japan introduced the Integrated Geological Map Database (GeoMapDB) in 2006. The GeoMapDB is based on a WebGIS technology, which makes it possible to browse, overlay and search geological maps online. The database contains geological maps with scales ranging from 1:2 million to 1:25,000. Links to aforementioned volcanic database and active fault database in RIO-DB are also available. OneGeology is an international initiative of the geological surveys of the world and a flagship project of the ‘International Year of Planet Earth’. It aims to create dynamic geological map of the world available at the world wide web. Geological Surveys from 109 countries of the world are participating in this project. The Geological Survey of Japan, AIST is promoting OneGeology in Asia. The OneGeology portal was officially launched in 2008. Volcanic hazard maps are available for most major active volcanoes in Japan. A web-based GIS system combining various types of information with real time numerical simulations are very important for the next generation of volcanic hazard maps. Volcanic gravity flow simulations using the energy cone model were developed on GEO Grid system in AIST. An interactive user interface is available on the GEO Grid website. The pyroclastic flow simulation is open to all scientists and local government officials at http://geoapp.geogrid.org/gridsphere.

Takarada, S.; Nakano, S.; Hoshizumi, H.; Itoh, J.; Urai, M.; Nishiki, K.

2009-12-01

87

U.S. Geological Survey Science in the Decade 20072017 Facing Tomorrow's Challenges--  

E-print Network

U.S. Geological Survey Science in the Decade 2007­2017 Facing Tomorrow's Challenges-- U.S. Department of the Interior U.S. Geological Survey Circular 1309 #12;#12;Facing Tomorrow's Challenges-- Circular 1309 U.S. Department of the Interior U.S. Geological Survey U.S. Geological Survey Science

88

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

E-print Network

U.S. Department of the Interior U.S. Geological Survey Data Series 801 Geochemical, Minnesota Geological Survey. Center, Site 11369 in Vermont; photograph by Laurel Woodruff, U.S. Geological Survey. Right, James Kilburn (U.S. Geological Survey) collecting soil sample at site 9643 in Kansas

Torgersen, Christian

89

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 163°W appears on the IBCAO map to have a possible seamount on the eastern edge of the trough at 77.9°N. 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

90

Publications of the U.S. Geological Survey Branch of Atlantic Marine Geology: Calendar Year 1991  

USGS Publications Warehouse

This [summary of] U.S. Geological Survey Open-File Report 92-585 contains a listing of publications authored or co-authored by members of the Branch of Atlantic Marine Geology during 1991. Results of Branch investigations are distributed in a variety of ways, including maps, journal articles, abstracts and U.S.G.S. publications. Copies of U.S.G.S. Open File Reports may generally be obtained from the author. Book publications can be obtained from U.S. Geological Survey, Books and Reports Sales, Federal Center, Box 25425, Denver, CO 80225. Copies of U.S.G.S. Maps may be obtained from the U.S. Geological Survey, Map Sales, Federal Center, Box 25286, Denver, CO 80225

Mons-Wengler, Margaret C.; Oldale, Robert N.

1992-01-01

91

US Geological Survey Digital Mapping Techniques 1998: Workshop Proceedings  

NSDL National Science Digital Library

More than 80 selected technical representatives participated in the Digital Mapping Techniques '98 workshop, which was convened by the Association of American State Geologists (AASG) and the US Geological Survey (USGS) and hosted by the Illinois State Geological Survey. At the site users will find the proceedings of the workshop, including 23 papers and several short summaries covering methods on data capture, data management, and digital map production. The goal of the conference was "to help move the state surveys and the USGS toward development of more cost-effective, flexible, and useful systems for digital mapping and GIS analysis." Instructions for paper copy requests are also provided on site.

92

Adult Education and Indigenous Peoples in Canada. International Survey on Adult Education for Indigenous Peoples. Country Study: Canada.  

ERIC Educational Resources Information Center

Adult education for indigenous peoples in Canada was examined. First, information on government institutions, indigenous organizations, international agencies, and nongovernmental organizations engaged in adult education for Canada's indigenous peoples was compiled. Next, questionnaires and survey techniques were used to research the policy and…

Richardson, Cathy; Blanchet-Cohen, Natasha

93

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

94

U.S. Geological Survey Research Centers  

NSDL National Science Digital Library

Website of USGS' Coastal and Marine Geology Program. Site features an easy to use interactive resource locator with pull down menus. Resources are broken down by topic, region, and resource type. Information includes tsunamis, earthquakes, erosion, hurricanes, and much more. Information available for many different science disciplines. Access SoundWaves, USGS's monthly newsletter, and read impact studies from past hurricanes.

95

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 Canadian’s 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 health–related 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. PMID:25565699

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

2014-01-01

96

National Interagency Canada Lynx Detection Survey in Minnesota, Wisconsin, and Michigan  

E-print Network

detected included black bears (Ursus americanus), bobcats (Lynx rufus), coyotes (Canis latrans), ungulatesNational Interagency Canada Lynx Detection Survey in Minnesota, Wisconsin, and Michigan Chris Interagency Canada Lynx Detection Survey (NLDS) was a survey designed to detect lynx with a hair

Minnesota, University of

97

United States Geological Survey yearbook, fiscal year 1980  

SciTech Connect

The fiscal year 1980 Yearbook summarizes the activities of the US Geological Survey in response to its scientific and regulatory missions and its responsibility for exploration of the National Petroleum Reserve in Alaska. The main sections of this Yearbook are: (1) the year in review - a brief overview of the significant events of the Geological Survey during fiscal year 1980; (2) perspectives - essays focusing on specific events (rather than scientific topics) and programs involving multi-division participation; (3) missions, organization, and budget - a description of the Geological Survey's major duties and assignments and of the organizational structure that supports its missions; (4) division chapters - a description on the significant accomplishments (rather than a comprehensive program by program discussion) of each of the eight operating divisions and offices; and (5) appendices - provide supplementary information regarding key personnel, cooperators, and selected summary budgetary tables and an index.

Not Available

1980-01-01

98

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

99

The new camera calibration system at the US Geological Survey  

USGS Publications Warehouse

Modern computerized photogrammetric instruments are capable of utilizing both radial and decentering camera calibration parameters which can increase plotting accuracy over that of older analog instrumentation technology from previous decades. Also, recent design improvements in aerial cameras have minimized distortions and increased the resolving power of camera systems, which should improve the performance of the overall photogrammetric process. In concert with these improvements, the Geological Survey has adopted the rigorous mathematical model for camera calibration developed by Duane Brown. An explanation of the Geological Survey's calibration facility and the additional calibration parameters now being provided in the USGS calibration certificate are reviewed. -Author

Light, D.L.

1992-01-01

100

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?í

101

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

102

Natural Resources Canada  

NSDL National Science Digital Library

This website is home to Natural Resources Canada (NRCan), a government agency dealing with natural resource issues important to Canadians. It covers energy, climate change, earthquakes, geography, geology, floods, landslides, minerals and metals, forest fires, mining, remote sensing, and forestry. This site links to numerous government agencies, including the Geological Survey of Canada, Canadian Forest Service, and the Office of Energy. Also offered are a Kid's page with activities, information for teachers, and links to maps, databases, publications, and library resources.

103

Geological mapping in Melville Peninsula, Northwest Territories, Canada using multi-source remote sensing and geophysical data  

Microsoft Academic Search

A feasibility study has been initiated to use multispectral LANDSAT TM and geophysical data to delineate geological patterns as an aid to geological field mapping in Arctic regions in Canada. The Hall Lake area in Melville peninsula, Northwest Territories has been chosen for this study because the area has little vegetation, relatively large areas of unweathered rock outcrops and a

Chang-lo F. Chung; Peng Gong; Andrew N. Rencz; Mikkel Schau

1993-01-01

104

United States Geological Survey: Research on Invasive Species  

NSDL National Science Digital Library

This is the homepage of the United States Geological Survey's (USGS) Invasive Species Program. Materials include information about the program, news articles, and information on research projects arranged by species, project, or region. There is also contact information for researchers and experts, as well as links to publications, events, and other sites with related information.

105

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

106

LAND USE LAND COVER (LULC) - US GEOLOGICAL SURVEY  

EPA Science Inventory

The National Mapping Program, a component of the U. S. Geological Survey (USGS), produces and distributes land use and land cover maps and digitized data for the conterminous U.S. and Hawaii. Land use refers to the human activities that are directly related to the land. The int...

107

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

108

United States Department of the Interior u.s. GEOLOGICAL SURVEY  

E-print Network

United States Department of the Interior· u.s. GEOLOGICAL SURVEY Pacific Southwest Area Regional the United States Geological Survey (USGS) regarding the attached Memorandum ofUnderstanding (MOU) dated

109

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

E-print Network

, Iowa. #12;Lidar Point Density Analysis--Implications for Identifying Water Bodies By Bruce B. Worstell U.S. Geological Survey Suzette M. Kimball, Acting Director U.S. Geological Survey, Reston, Virginia

Fleskes, Joe

110

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

111

Directions of the US Geological Survey Landslide Hazards Reduction Program  

USGS Publications Warehouse

The US Geological Survey (USGS) Landslide Hazards Reduction Program includes studies of landslide process and prediction, landslide susceptibility and risk mapping, landslide recurrence and slope evolution, and research application and technology transfer. Studies of landslide processes have been recently conducted in Virginia, Utah, California, Alaska, and Hawaii, Landslide susceptibility maps provide a very important tool for landslide hazard reduction. The effects of engineering-geologic characteristics of rocks, seismic activity, short and long-term climatic change on landslide recurrence are under study. Detailed measurement of movement and deformation has begun on some active landslides. -from Author

Wieczorek, G.F.

1993-01-01

112

U.S. Geological Survey Energy and Minerals Science Strategy--A Resource Lifecycle Approach  

E-print Network

U.S. Geological Survey Energy and Minerals Science Strategy--A Resource Lifecycle Approach Circular and minerals science strategy-- A resource lifecycle approach: U.S. Geological Survey Circular 1383­D, 37 p Science Strategy Facing Tomorrow's Challenges--U.S. Geological Survey Science in the Decade 2007

Torgersen, Christian

113

United States Department of the Interior u.s. GEOLOGICAL SURVEY  

E-print Network

United States Department of the Interior u.s. GEOLOGICAL SURVEY TAKE PRior INAMERICA Pacific States Geological Survey (USGS) regarding the attached Memorandum ofUnderstanding (MOU) dated February 3. Shulters Regional Executive, Pacific Southwest Area United States Geological Survey DATE MAY 24 2010

114

U.S. Geological Survey activities in New York, 1979  

USGS Publications Warehouse

This report describes the work of the U.S. Geological Survey and summarizes projects conducted in New York during 1979. Many of these projects are continuing into the 1980's. The major programs provide basic scientific information concerning water, land, and mineral resources. The Survey also supervises the exploration for mineral fuels on leased outer continental shelf lands. The programs are: (1) Water resources investigations--These encompass (a) statewide networks of measurement stations that provide continuous records of streamflow, groundwater levels, water quality, and sediment discharge, and (b) projects to study local or regional water problems as well as critical water problems of national scope or interest. (2) Geologic and mineral resource surveys and mapping--These studies focus on geologic, mineral, and energy-resources investigations both on land and offshore. (3) Conservation of lands and mineral resources--These studies include the classification and evaluation of mineral resources on the outer continental shelf. (4) Topographic surveys and mapping--These studies include quadrangle, small-scale, and special mapping. (5) Land information and analysis--These studies focus on the interpretation and application of earth-science and related information to multi-disciplinary land-resource and environmental-impact problems. (USGS)

Finch, Anne; Gori, Paula

1979-01-01

115

Resident duty hours in Canada: a survey and national statement  

PubMed Central

Physicians in general, and residents in particular, are adapting to duty schedules in which they have fewer continuous work hours; however, there are no Canadian guidelines on duty hours restrictions. To better inform resident duty hour policy in Canada, we set out to prepare a set of recommendations that would draw upon evidence reported in the literature and reflect the experiences of resident members of the Canadian Association of Internes and Residents (CAIR). A survey was prepared and distributed electronically to all resident members of CAIR. A total of 1796 eligible residents participated in the survey. Of those who responded, 38% (601) reported that they felt they could safely provide care for up to 16 continuous hours, and 20% (315) said that 12 continuous hours was the maximum period during which they could safely provide care (n = 1592). Eighty-two percent (1316) reported their perception that the quality of care they had provided suffered because of the number of consecutive hours worked (n = 1598). Only 52% (830) had received training in handover (n = 1594); those who had received such training reported that it was commonly provided through informal modelling. On the basis of these data and the existing literature, CAIR recommends that resident duty hours be managed in a way that does not endanger the health of residents or patients; does not impair education; is flexible; and does not violate ethical or legal standards. Further, residents should be formally trained in handover skills and alternative duty hour models. PMID:25559388

2014-01-01

116

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

117

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.

U.S. Geological Survey

1999-01-01

118

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

119

USGS Coastal and Marine Geology Survey Data in Google Earth  

NASA Astrophysics Data System (ADS)

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 Earth interface provides geographic orientation and panning/zooming capabilities to locate data relative to topography, bathymetry, and coastal areas. Viewing navigation with Google Earth's background imagery allows queries such as, why areas were not surveyed (answer presence of islands, shorelines, cliffs, etc.). Detailed box core subsample photos from selected sampling activities, published geotechnical data, and sample descriptions are now viewable on Google Earth, (for example, M-1-95-MB, P-2-95-MB, and P-1-97- MB box core samples). One example of the use of Google Earth is CMG's surveys of San Francisco's Ocean Beach since 2004. The surveys are conducted with an all-terrain vehicle (ATV) and shallow-water personal watercraft (PWC) equipped with Global Positioning System (GPS), and elevation and echo sounder data collectors. 3D topographic models with centimeter accuracy have been produced from these surveys to monitor beach and nearshore processes, including sand transport, sedimentation patterns, and seasonal trends. Using Google Earth, multiple track line data (examples: OB-1-05-CA and OB-2-05-CA) can be overlaid on beach imagery. The images also help explain the shape of track lines as objects are encountered.

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

2006-12-01

120

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.

U.S. Geological Survey; Rabbitt, Mary C.

1975-01-01

121

U. S. Geological Survey investigation of Mississippi Embayment area  

SciTech Connect

Prior to about 1974, most of the work in the Mississippi embayment area by members of the U.S. Geological Survey was motivated by interest in the embayment's paleontologic aspects, stratigraphy, and economic resources, especially ground water. However, an excellent description of the effects of the New Madrid earthquake series was published on the centennial of that 1811-1812 seismicity. During World War II, combined efforts of the U.S. Geological Survey and the U.S. Bureau of Mines produced a wealth of information about the Little Rock pluton and the process of laterizing exposed nepheline syenite to form bauxite. That project, in a search for additional intrusive bodies at shallow depth, sponsored a reconnaissance aeromagnetic survey along the embayment edge from Little Rock, Arkansas, to Cairo, Illinois. Magnetic anomalies that were identified then are now known to be related to the series of buried plutons aligned along the northwestern margin of the upper Mississippi embayment graben. Later investigations assessed the geochemistry of the more mafic parts of the Little Rock pluton. In 1974, U.S. Geological survey effort, along with that of other federal agencies, state agencies, and academic institutions, was directed toward finding the cause of ongoing seismicity in the upper embayment and toward assessing the related potential effects on persons and property. The purpose of this poster display is to summarize the more significant findings in this area related to (a) the rock sequence, lower crust to surface; (b) the major structural features, including a rift system; (c) the current state of stress; and (d) the present-day seismicity.

Glick, E.E.

1983-09-01

122

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's 170 active volcanoes (red triangles) for signs of unrest and for issuing timely warnings of hazardous at the five volcano observatories operated by the USGS Volcano Hazards Program and also by State

Torgersen, Christian

123

Geropsychology Training in Canada: A Survey of Doctoral and Internship Programs  

Microsoft Academic Search

The Canadian Psychological Association emphasises the importance of diversity training for doctoral and internship programs, and age is an important aspect of diversity. Yet, little is known about training capacity in clinical geropsychology in Canada. To address this issue, the authors surveyed directors of clinical training in all accredited clinical and counselling psychology doctoral and internship programs in Canada. Responses

Candace Konnert; Keith S. Dobson; Ashli Watt

2009-01-01

124

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

125

United States Geological Survey, Earthquake Hazards Program: Products and Publications  

NSDL National Science Digital Library

This portal provides access to products and publications of the United States Geological Survey (USGS) Earthquake Hazards Program (EHP). Links are provided to fact sheets arranged by region in the U.S and by global and national areas. There are also links to general information such as bibliographies and publications on general geology, plate tectonics, and tsunamis. A section on information services includes links to email notification services for earthquakes, moment tensors, and seismicity reports; and RSS feeds on the latest earthquakes. There is also an extensive selection of maps, including earthquake maps, fault and landform maps, and seismic hazard and site response maps. Other materials include multimedia items (CD-ROMs and videos); open-file reports, bulletins, and circulars; and a selection of software for earthquake analysis, mapping, and data distribution. Some items are free; others are available for purchase.

126

Digital Field Mapping with the British Geological Survey  

NASA Astrophysics Data System (ADS)

The BGS•SIGMA 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 BGS•SIGMA 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 BGS•SIGMA2012. BGS•SIGMA2012 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. BGS•SIGMA2012 uses a highly customised version of ESRI's ArcGIS 10 and 10.1 with a fully relational Access 2007/2010 geodatabase. BGS•SIGMA2012 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 BGS•SIGMAmobile toolkit formed the major part of the first two releases but this new version integrates the BGS•SIGMAdesktop functionality that BGS routinely uses to transform our field data into corporate standard geological models and derivative map outputs. BGS•SIGMA2012 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 BGS•SIGMA 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

127

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

128

Proterozoic unconformity-related uranium deposits in Canada and Australia - geology, genesis, and impact on world uranium production  

Microsoft Academic Search

Fifteen major unconformity-related uranium deposits, cumulatively containing more than 1350 million lb UâOâ, have been discovered since 1966 in almost identical geologic settings in the Pine Creek geosyncline, Northern Territory, Australia, and the Athabasca basin, Saskatchewan, Canada. A polygenetic mineralization model is preferred, involving primary syngenetic uranium accumulation in lower Proterozoic euxinic shallow marine environments near an Archean provenance; concentration

J. A. Climie

1986-01-01

129

U.S. Geological Survey - Water Resources of Virginia  

NSDL National Science Digital Library

Users can access information on Virginia water resources, including real-time streamflow and ground water data, water quality data, and water use data. Interactive streamflow and groundwater level maps allow the user to locate recent data on stream discharge, gage height,and water level. Annual surface water and ground water reports are available from 1995. Other materials include information on the Chesapeake Bay river input monitoring program, links to U.S. Geological Survey (USGS) publications and information on USGS projects in Virginia; and links to USGS outreach and educational resources. Weather information is also available.

130

The United States Geological Survey National Mapping Program Fact Sheets  

NSDL National Science Digital Library

This site offers a collection of United States Geological Survey (USGS) factsheets that introduce and explain a vast array of topics related to mapping. Each subject covers the history and development of that particular topic and includes any software or instruments that may be requried to utilize the information sources described. The topics covered on this site include: GIS, UTM, aerial photographs, map projections, map accuracy measurements, digital elevation models (DEM), satellite imagery, landcover mapping, hydrography, and numerous other components of maps. Information is available in several different formats (paper, html and pdf) and includes links back to other USGS services.

131

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

132

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

133

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

134

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: E. Lee Bray, Aluminum Commodity Specialist U.S. Geological Survey 989 National Center) and its partner Saudi Arabian Mining Co. (Ma'aden) (Riyadh, Saudi Arabia) restarted production from one

135

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: E. Lee Bray, Aluminum Commodity Specialist U.S. Geological Survey 989 National Center'aden) (Riyadh, Saudi Arabia) temporarily shut down production from one of the two potlines at their 740,000-t

136

Aufeis accumulations in stream bottoms in arctic and subarctic environments as a possible indicator of geologic structure: Chapter F in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project  

USGS Publications Warehouse

The thickest (>3 meters) and most extensive aufeis (100’s of meters to kilometers along valleys) coincided with locations of laterally extensive (>5 kilometers) mapped high-angle brittle fault zones, suggesting that the fault zones are hydraulically conductive. Additional evidence of water flow is provided by observed changes in stream-water chemistry in reaches in which aufeis forms, despite a lack of surface tributaries. Minor or no aufeis was observed in many other drainage valleys where no laterally extensive structures have been mapped, implying that aufeis formation results from more than a topographic effect or discharge from bank storage. Thus, the presence of thick, laterally extensive aufeis in highgradient streams may be a useful aid to geologic structural mapping in arctic and subarctic climates.

Wanty, Richard B.; Wang, Bronwen; Vohden, Jim; Day, Warren C.; Gough, Larry P.

2007-01-01

137

US Geological Survey publications on western tight gas reservoirs  

SciTech Connect

This bibliography includes reports published from 1977 through August 1988. In 1977 the US Geological Survey (USGS), in cooperation with the US Department of Energy's, (DOE), Western Gas Sands Research program, initiated a geological program to identify and characterize natural gas resources in low-permeability (tight) reservoirs in the Rocky Mountain region. These reservoirs are present at depths of less than 2,000 ft (610 m) to greater than 20,000 ft (6,100 m). Only published reports readily available to the public are included in this report. Where appropriate, USGS researchers have incorporated administrative report information into later published studies. These studies cover a broad range of research from basic research on gas origin and migration to applied studies of production potential of reservoirs in individual wells. The early research included construction of regional well-log cross sections. These sections provide a basic stratigraphic framework for individual areas and basins. Most of these sections include drill-stem test and other well-test data so that the gas-bearing reservoirs can be seen in vertical and areal dimensions. For the convenience of the reader, the publications listed in this report have been indexed by general categories of (1) authors, (2) states, (3) geologic basins, (4) cross sections, (5) maps (6) studies of gas origin and migration, (7) reservoir or mineralogic studies, and (8) other reports of a regional or specific topical nature.

Krupa, M.P.; Spencer, C.W.

1989-02-01

138

The internal geology and emplacement history of the Renard 2 kimberlite, Superior Province, Quebec, Canada  

NASA Astrophysics Data System (ADS)

The Renard 2 kimberlite is located in the Otish Mountains region of Quebec, Canada and is one of the largest pipes in the Renard cluster. The cluster consists of nine kimberlite bodies and was discovered in 2001 by Ashton Mining of Canada Inc. and its joint venture partner SOQUEM Inc. Renard 2 was emplaced into Archean meta-greywacke derived migmatite, gneiss and granite of the Opinaca Subprovince of the eastern Superior Province at approximately 640.5 ± 2.8 Ma. An undetermined amount of erosion has occurred since emplacement with the present surface expression of the pipe estimated to be 0.75 ha. This kimberlite is interpreted as a steep-sided diatreme with minor irregularities in the external shape. The dominant infill is a massive volcaniclastic kimberlite (MVK) that is classified as tuffisitic kimberlite breccia (TKB) and is characterized by a high proportion of granitoid country rock xenoliths. A second dominant infill is a texturally complex, less diluted coherent kimberlite (CK) characterized locally by a transitional textures between CK and TKB. Surrounding the diatreme is a significant zone of variable width comprised of extensively brecciated country rock (+/-kimberlite) and referred to as marginal breccia. In addition to the two main rock types infilling the pipe, a number of hypabyssal kimberlite (HK) dykes and irregular shaped intrusions occur throughout the body, along the pipe contacts, within the marginal breccia and in the surrounding country rock. Geological features displayed by Renard 2 are similar to those described from Class 1 kimberlites of the Kimberley area of South Africa, the Gahcho Kué cluster of Canada and the Pimenta Bueno kimberlite field of Brazil. The economic evaluation of Renard 2 is in progress and to date has included extensive diamond and reverse circulation drilling as well as the collection of an underground bulk sample. Results from material sampled from Renard 2, including a 2449 tonne bulk sample, suggest Renard 2 has an estimated diamond content of 83 cpht (carats per hundred tonnes). A three dimension geology model of the pipe has been developed following the investigation of drill cores, subsurface mapping and petrography combined with diamond studies and geophysics. The model produced is being used to guide and direct the evaluation of the kimberlite and unravel the emplacement history of the pipe.

Fitzgerald, C. E.; Hetman, C. M.; Lepine, I.; Skelton, D. S.; McCandless, T. E.

2009-11-01

139

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.

U.S. Geological Survey

2004-01-01

140

The STRATAFORM Project: U.S. Geological Survey geotechnical studies  

USGS Publications Warehouse

This report presents physical property logs of core samples from an offshore area near Eureka, CA. The cores were obtained as part of the STRATAFORM Program (Nittrouer and Kravitz, 1995, 1996), a study investigating how present sedimentation and sediment transport processes influence long-term stratigraphic sequences preserved in the geologic record. The core samples were collected during four separate research cruises to the northern California study area, and data shown in the logs of the cores were collected using a multi-sensor whole core logger. The physical properties collected are useful in identifying stratigraphic units, ground-truthing acoustic imagery and sub-bottom profiles, and in understanding mass movement processes. STRATA FORmation on Margins was initiated in 1994 by the Office of Naval Research, Marine Geology and Geophysics Department as a coordinated multi-investigator study of continental-margin sediment transport processes and stratigraphy (Nittrouer and Kravitz, 1996). The program is investigating the stratigraphic signature of the shelf and slope parts of the continental margins, and is designed to provide a better understanding of the sedimentary record and a better prediction of strata. Specifically, the goals of the STRATAFORM Program are to (Nittrouer and Kravitz, 1995): - determine the geological relevance of short-term physical processes that erode, transport, and deposit particles and those processes that subsequently rework the seabed over time scales - improve capabilities for identifying the processes that form the strata observed within the upper ~100 m of the seabed commonly representing 104-106 years of sedimentation. - synthesize this knowledge and bridge the gap between time scales of sedimentary processes and those of sequence stratigraphy. The STRATAFORM Program is divided into studies of the continental shelf and the continental slope; the geotechnical group within the U.S. Geological Survey provides support to both parts of the project.

Minasian, Diane L.; Lee, Homa J.; Locat, Jaques; Orzech, Kevin M.; Martz, Gregory R.; Israel, Kenneth

2001-01-01

141

High-Resolution Aeromagnetic (HRAM) Surveys: Exploration Applications from the Western Canada Sedimentary Basin -- Exploration in Highly Deformed Terrains Using Fixed-Wing Aircraft and Helicopter-Mounted Systems  

Microsoft Academic Search

Typical high-resolution aeromagnetic (HRAM) data in the fold belt region of the Western Canada Sedimentary Basin (WCSB), acquired with fixed-wing aircrafts flying 125 meters above the ground, imaged deformed lithological units, allowing the recognition of key geological structures within the detached sedimentary section. We also illustrate that an important contribution of HRAM surveys is the detection of reactivated basement faults,

Zeev Berger; Danny Fortin; Xiang Wang

142

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

143

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

144

The U.S. Geological Survey Drinking Water Initiative  

USGS Publications Warehouse

Safe drinking-water supplies are critical to maintaining and preserving public health. Although the Nation's drinking water is generally safe, natural and introduced contaminants in water supplies throughout the country have adversely affected human health. This new U.S. Geological Survey (USGS) initiative will provide information on the vulnerability of water supplies to be used by water-supply and regulatory agencies who must balance water-supply protection with the wise use of public funds. Using the results of the initiative, they will be better able to focus on the supplies most at risk and the variability of contaminants of most concern, and so address the mandates of the Safe Drinking Water Act. With its store of geologic, hydrologic, and land use and land cover data and its network of information in every State, the USGS can help to identify potential sources of contamination, delineate source areas, determine the vulnerability of waters to potential contamination, and evaluate strategies being used to protect source waters in light of the scientific information available. Many recent and ongoing studies by the USGS concern drinking-water issues. This fact sheet highlights four particular studies begun under the Drinking Water Initiative.

U.S. Geological Survey

1997-01-01

145

World Energy Resources program U. S. Geological Survey  

SciTech Connect

In 1973, with the OPEC embargo, the US was jarred into the world of insecure energy supplies - a harsh reality considering that throughout much of our history we had sufficient domestic supplies of oil and gas to meet all of our requirements. The US Government's response in 1973 was to assess domestic oil and gas potential, which was found to be substantial but nonetheless short of long-term requirements. Born of the need to become more certain about foreign as well has domestic resources, and working in conjunction with the Foreign Energy Supply Assessment Program of the US Department of Energy, the US Geological Survey undertook a program to develop a technical understanding of the reserves and undiscovered recoverable resources of petroleum in every basin in the world with petroleum potential. The World Energy Resources Program prepared an assessment of ultimate resources of crude oil for the World Petroleum Congress (WPC) in 1983, and a revision and update (including nature gas, crude oil, extra heavy oil, and tar sands) are planned for WPC in 1987. This poster session attempts to engender awareness of our scenario of world ultimate petroleum occurrence and to show some elements of the geology that guided our thinking.

Masters, C.D.

1986-05-01

146

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

147

United States Geological Survey (USGS) Natural Hazards Response  

USGS Publications Warehouse

The primary goal of U.S. Geological Survey (USGS) Natural Hazards Response is to ensure that the disaster response community has access to timely, accurate, and relevant geospatial products, imagery, and services during and after an emergency event. To accomplish this goal, products and services provided by the National Geospatial Program (NGP) and Land Remote Sensing (LRS) Program serve as a geospatial framework for mapping activities of the emergency response community. Post-event imagery and analysis can provide important and timely information about the extent and severity of an event. USGS Natural Hazards Response will also support the coordination of remotely sensed data acquisitions, image distribution, and authoritative geospatial information production as required for use in disaster preparedness, response, and recovery operations.

Lamb, Rynn; Jones, Brenda K.

2012-01-01

148

The United States Geological Survey Science Data Lifecycle Model  

USGS Publications Warehouse

U.S. Geological Survey (USGS) data represent corporate assets with potential value beyond any immediate research use, and therefore need to be accounted for and properly managed throughout their lifecycle. Recognizing these motives, a USGS team developed a Science Data Lifecycle Model (SDLM) as a high-level view of data—from conception through preservation and sharing—to illustrate how data management activities relate to project workflows, and to assist with understanding the expectations of proper data management. In applying the Model to research activities, USGS scientists can ensure that data products will be well-described, preserved, accessible, and fit for re-use. The Model also serves as a structure to help the USGS evaluate and improve policies and practices for managing scientific data, and to identify areas in which new tools and standards are needed.

Faundeen, John L.; Burley, Thomas E.; Carlino, Jennifer A.; Govoni, David L.; Henkel, Heather S.; Holl, Sally L.; Hutchison, Vivian B.; Martín, Elizabeth; Montgomery, Ellyn T.; Ladino, Cassandra C.; Tessler, Steven; Zolly, Lisa S.

2014-01-01

149

The British Geological Survey Lexicon of Named Rock Units  

NSDL National Science Digital Library

Users can search this database of British rock units by rock unit, preferred map code, maximum age of rock unit, and database status code (described at site) and retrieve information about which British Geological Survey (BGS) maps and publications cover those units. For example, a search for Stockdale Group and Ashgil leads to a record citing the lithology, upper and lower boundary definitions, unit thickness, geographic extent, parent unit, previous name, stratotype, and bibliographic reference for the Paleozoic Stockdale Group of Northern England. The Lexicon is intended foremost as a reference source and dictionary for the use of BGS geoscientists, but the basic information on the stratigraphical framework and rock terminology of the UK is useful for non-BGS geologists visiting the site.

150

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

E-print Network

use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement.S. Geological Survey Mark D. Myers, Director U.S. Geological Survey, Reston, Virginia: 2008 For product, physical characteristics, stream habitat, and aquatic life, the NAWQA Program aims to provide science

151

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

152

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

E-print Network

in a "Climate Response Network" of wells designed to illustrate the response of the ground-water system. Continuous data are ground-water levels measured by an automatic sensing device, recorded by a data logger.S. Geological Survey Ground-Water Climate Response Network Printed on recycled paper The U.S. Geological Survey

153

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

E-print Network

U.S. Department of the Interior U.S. Geological Survey Open-File Report 2011­1190 Evaluating Trapping Techniques to Reduce Potential for Injury to Mexican Wolves #12;Photo Credit: U.S. Fish 2011­1190 U.S. Department of the Interior U.S. Geological Survey #12;U.S. Department of the Interior

Torgersen, Christian

154

Geologic insights from multibeam bathymetry and seascape maps of the Bay of Fundy, Canada  

NASA Astrophysics Data System (ADS)

The macrotidal Bay of Fundy, Canada, was systematically mapped in the early 2000s using multibeam sonar technology, partly to support efforts to develop hydropower. The primary product was a suite of 1:50,000-scale maps of shaded seafloor relief and backscatter. In addition, a ‘seascape’ map was produced in an attempt to classify the entire bay in terms of morphology, texture, and biota. The eight seascape groups that are delineated reflect the strong signature of glaciation in much of the bay, the effects of Holocene tidal range expansion, and the results of modern processes under a dynamic current regime. As a result of the recent mapping we are able to argue that the muddy depocentre in the southwest of the bay was primarily active before the well-documented expansion of tidal range that occurred in the Bay of Fundy in the Holocene epoch. We further demonstrate the complexity of the seafloor in one of the glacial seascapes, and discuss the morphology and stability of a major tidal scour. The evidence obtained from multibeam sonar mapping reveals the complexity of the sea floor in the Bay of Fundy not necessarily apparent on the 1977 surficial geology map based on sparse lines of single-beam echo sounder data.

Shaw, John; Todd, Brian J.; Li, Michael Z.

2014-07-01

155

ANALYSIS OF AERIAL SURVEYS AND TOLERANCE OF LANDOWNERS FOR A CANADA GOOSE FLOCK IN NORTHEASTERN SOUTH DAKOTA  

E-print Network

ANALYSIS OF AERIAL SURVEYS AND TOLERANCE OF LANDOWNERS FOR A CANADA GOOSE FLOCK IN NORTHEASTERN AND TOLERANCE OF LANDOWNERS FOR A CANADA GOOSE FLOCK tN NORTHEASTERN SOUTH DAKOTA Abstract THOMAS C. TACHA Four the northeastern South Dakota Canada goose flock from 2,000 to 5,000 birds. Only 6 percent of the landowners had

156

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

157

Geomorphology in North American Geology Departments, 1971  

ERIC Educational Resources Information Center

Presents results of a 1970-71 survey of 350 geomorphologists and geology departments to determine what sort of geomorphology is being taught in the colleges and universities of the United States and Canada. (PR)

White, Sidney E.; Malcolm, Marshall D.

1972-01-01

158

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

159

For permission to copy, contact editing@geosociety.org 2004 Geological Society of America 655  

E-print Network

Repository item 2004076. Coseismic subsidence in the 1700 great Cascadia earthquake: Coastal estimates versus, Post Office Box 3055 STN CSC, Victoria, British Columbia V8W 3P6, Canada and Geological Survey 3055 STN CSC, Victoria, British Columbia V8W 3P6, Canada Ste´phane Mazzotti§ Geological Survey

160

Canada.  

PubMed

In 1986, Canada's population stood at 25.5 million, with an annual growth rate of 1.2%. The infant mortality rate is 15/1000, and life expectancy is 69 years for males and 76 years for females. Of the labor force of 12.9 million, 3.5% are engaged in agriculture, 52% work in industry and commerce, 28.4% are in the services sector, and 5.9% are employed by the government. The gross national product was US$367.2 billion in 1986, with a per capita income of about $13,000. Canada is a constitutional monarchy with a bilingual federal system, a parliamentary form of government, and strong democratic traditions. The spectacular growth of Canadian manufacturing in recent decades has transformed the country from a rural agricultural society into a primarily urban and industrial society. The mineral industry has been a major factor in Canada's economic development. PMID:12178065

1987-03-01

161

Survey of bottled drinking water available in Manitoba, Canada.  

PubMed Central

Forty domestic and imported brands of bottled water were purchased in Manitoba, Canada and examined for total dissolved solids (TDS), chloride, sulfate, nitrate-nitrogen, cadmium, lead, copper, and radioactivity. The samples showed great variation in quality, and some exceeded the Canadian Water Quality Guidelines for drinking water for TDS, chloride, and lead. Carbonation, ozonation, and type of packaging were not associated with differences in metal levels, although carbonated samples tended to show higher TDS values. A number of deficiencies were found with respect to product labeling. PMID:11017891

Pip, E

2000-01-01

162

U.S. Geological Survey Climate and Land Use Change Science Strategy--A Framework for Understanding  

E-print Network

U.S. Geological Survey Climate and Land Use Change Science Strategy--A Framework for Understanding://visibleearth.nasa.gov/). #12;U.S. Geological Survey Climate and Land Use Change Science Strategy-- A Framework.S. Geological Survey climate and land use change science strategy--A framework for understanding and responding

Torgersen, Christian

163

U.S. Geological Survey Environmental Health Science Strategy--Providing Environmental Health Science for a Changing World  

E-print Network

U.S. Geological Survey Environmental Health Science Strategy-- Providing Environmental Health Science for a Changing World Circular 1383­E U.S. Department of the Interior U.S. Geological Survey #12 by Robert L. Runkel, USGS. #12;U.S. Geological Survey Environmental Health Science Strategy

Torgersen, Christian

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

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.

166

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 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.

Scott, Arthur G.

1986-01-01

167

New hydrologic instrumentation in the U.S. Geological Survey  

USGS Publications Warehouse

New water-level sensing and recording instrumentation is being used by the U.S. Geological Survey for monitoring water levels, stream velocities, and water-quality characteristics. Several of these instruments are briefly described. The Basic Data Recorder (BDR) is an electronic data logger, that interfaces to sensor systems through a serial-digital interface standard (SDI-12), which was proposed by the data-logger industry; the Incremental Shaft Encoder is an intelligent water-level sensor, which interfaces to the BDR through the SDI-12; the Pressure Sensor is an intelligent, nonsubmersible pressure sensor, which interfaces to the BDR through the SDI-12 and monitors water levels from 0 to 50 feet; the Ultrasonic Velocity Meter is an intelligent, water-velocity sensor, which interfaces to the BDR through the SDI-12 and measures the velocity across a stream up to 500 feet in width; the Collapsible Hand Sampler can be collapsed for insertion through holes in the ice and opened under the ice to collect a water sample; the Lighweight Ice Auger, weighing only 32 pounds, can auger 6- and 8-inch holes through approximately 3.5 feet of ice; and the Ice Chisel has a specially hardened steel blade and 6-foot long, hickory D-handle.

Latkovich, V.J.; Shope, W.G.

1991-01-01

168

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

169

Soil geochemical survey over concealed kimberlites in the Attawapiskat area in northern Canada  

E-print Network

Soil geochemical survey over concealed kimberlites in the Attawapiskat area in northern Canada was conducted over kimberlites in a discontinuous permafrost zone in the James Bay Lowlands, southeastern Hudson Bay Lowlands. The kimberlites are concealed by 10 to 30 m of tills and Tyrell Sea clay sediments

170

Water-resources activities of the U.S. Geological Survey in Minnesota, 1993 water year  

USGS Publications Warehouse

Water-resources activities of the Minnesota District, Water Resources Division, U.S. Geological Survey are a continued response to the need for information on the quantity and quality of water resources. U.S. Geological Survey water-resource activities in Minnesota are done in cooperation with State, local, and other Federal agencies. Some activities are short in duration (1-5 years), while others are continuous. This report is a summary of water-resource activities in the Minnesota District for the 1993 water year. A list of reports published during the 1993 water year and additional sources of U.S. Geological Survey publications also are included.

Amos, G.L.

1994-01-01

171

U.S. Geological Survey Rewarding Environment Culture Study, 2002  

USGS Publications Warehouse

In its 2001 review of the U.S. Geological Survey (USGS), the National Research Council (NRC, p. 126) cautioned that ?high-quality personnel are essential for developing high-quality science information? and urged the USGS to ?devote substantial efforts to recruiting and retaining excellent staff.? Recognizing the importance of the NRC recommendation, the USGS has committed time and resources to create a rewarding work environment with the goal of achieving the following valued outcomes: ? USGS science vitality ? Customer satisfaction with USGS products and services ? Employee perceptions of the USGS as a rewarding place to work ? Heightened employee morale and commitment ? The ability to recruit and retain employees with critical skills To determine whether this investment of time and resources was proving to be successful, the USGS Human Resources Office conducted a Rewarding Environment Culture Study to answer the following four questions. ? Question 1: Does a rewarding work environment lead to the valued outcomes (identified above) that the USGS is seeking? ? Question 2: Which management, supervisory, and leadership behaviors contribute most to creating a rewarding work environment and to achieving the valued outcomes that the USGS is seeking? ? Question 3: Do USGS employees perceive that the USGS is a rewarding place to work? ? Question 4: What actions can and should be taken to enhance the USGS work environment? To begin the study, a conceptual model of a rewarding USGS environment was developed to test assumptions about a rewarding work environment. The Rewarding Environment model identifies the key components that are thought to contribute to a rewarding work environment and the valued outcomes that are thought to result from having a rewarding work environment. The 2002 Organizational Assessment Survey (OAS) was used as the primary data source for the study because it provided the most readily available data. Additional survey data were included as they became available The dividends of creating a rewarding work environment can be great. As the results of the USGS Rewarding Environment Culture Study of 2002 indicate, creating a rewarding work environment is an investment that can have an important impact on the outcomes that the USGS values?the vitality of our science, the satisfaction of our customers, and the morale, commitment, and performance of our employees.

Nash, Janis C.; Paradise-Tornow, Carol A.; Gray, Vicki K.; Griffin-Bemis, Sarah P.; Agnew, Pamela R.; Bouchet, Nicole M.

2010-01-01

172

Coast Salish and U.S. Geological Survey 2009 Tribal Journey water quality project  

USGS Publications Warehouse

The Salish Sea, contained within the United States and British Columbia, Canada, is the homeland of the Coast Salish Peoples and contains a diverse array of marine resources unique to this area that have sustained Coast Salish cultures and traditions for millennia. In July 2009, the Coast Salish People and U.S. Geological Survey conducted a second water quality study of the Salish Sea to examine spatial and temporal variability of environmental conditions of these surface waters as part of the annual Tribal Journey. Six canoes of approximately 100 towed multi parameter water-quality sondes as the Salish People traveled their ancestral waters during the middle of summer. Sea surface temperature, salinity, pH, dissolved oxygen, and turbidity were measured simultaneously at ten-second intervals, and more than 54,000 data points spanning 1,300 kilometers of the Salish Sea were collected. The project also synthesized Coast Salish ecological knowledge and culture with scientific monitoring to better understand and predict the response of coastal habitats and marine resources. Comparisons with data collected in 2008 reveal significantly higher mean surface-water temperatures in most subbasins in 2009 linked to record air temperatures that affected the Pacific Northwest in July 2009. Through large-scale spatial measurements collected each summer, the project helps to identify patterns in summer water quality, areas of water-quality impairment, and trends occurring through time.

Akin, Sarah K.; Grossman, Eric E.

2010-01-01

173

The U.S. Geological Survey Amphibian Research and Monitoring Initiative--2011 Annual Update  

E-print Network

The U.S. Geological Survey Amphibian Research and Monitoring Initiative--2011 Annual Update Objective The Amphibian Research and Monitoring Initiative (ARMI) assists Department of the Interior (DOI) resource management agencies with information needs related to amphibian conservation. This includes

Torgersen, Christian

174

THE LAST GLACIATION OF SHETLAND, NORTH ATLANTIC British Geological Survey NERC  

E-print Network

ATLANTIC BY N.R. GOLLEDGE, A. FINLAYSON, T. BRADWELL AND J.D. EVEREST British Geological Survey, Murchison House, Edinburgh, UK Golledge, N.R., Finlayson, A., Bradwell, T. and Everest, J.D., 2008: The last

175

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

E-print Network

.S. GEOLOGICAL SURVEY Charles G. Groat, Director Any use of trade, product, or firm names is for descriptive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Suspended sediment, water clarity, and submerged aquatic vegetation . . . . . . . . . . . . . . . . . . . . . . . .4 Watershed sources and transport of sediment

176

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

177

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

178

VizieR Online Data Catalog: The Canada-France Redshift Survey (CFRS) (Lilly+, 1995)  

NASA Astrophysics Data System (ADS)

The Canada-France Redshift Survey (CFRS) is a collaboration between astronomers in Canada and France: Simon Lilly (University of Toronto), Olivier Le Fevre and Francois Hammer (Observatoire de Paris Meudon), David Crampton (Dominion Astrophysical Observatory, Victoria), Laurence Tresse (Cambridge University), and David Schade and Dan Hudon (University of Toronto). The survey is based primarily on observations with the 3.6m Canada-France-Hawaii Telescope (CFHT) on Mauna Kea, Hawaii. The CFRS consists of spectra of over 1000 faint objects selected to have 17.5 < I(AB) < 22.5 in five regions of sky. The survey is providing the first systematic study of normal galaxies at redshifts z > 0.5, corresponding to look-back times of greater than 50% of the age of the Universe. Observations of CFRS galaxies have also been made with the Hubble Space Telescope and the survey will form the basis of future studies with a number of other ground-based and space facilities. We have written a lay-persons guide to the CFRS and the main scientific results that are emerging from it. (1 data file).

Lilly, S. J.; Le Fevre, O.; Crampton, D.; Hammer, F.; Tresse, L.

2001-11-01

179

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.

Vilà, Miquel; Pi, Roser; Cirés, Jordi; de Paz, Ana; Berástegui, Xavier

2010-05-01

180

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

181

Connectedness in Manufacturing: Results of a Survey on Standards Adoption in Canada  

NSDL National Science Digital Library

The Connectedness in Manufacturing Project, sponsored by Industry Canada (discussed in the December 4, 1997 Scout Report for Business & Economics) and the Integrated Manufacturing Technologies Institute of the National Research Council Canada, provides "awareness and guidance with respect to the adoption of connectedness standards by Canadian manufacturing companies." This 63-page report from the project reviews and analyzes the results of a May 1999 survey of more than 400 Canadian manufacturers about how they plan to use electronic means of communications to share business and technical data. The survey found that four out of five companies had some experience with electronic collaboration and industry sector had a great effect on whether or not the companies collaborated electronically. Industries such as automotive, aerospace and defense, and information technologies were most likely to share data.

1999-01-01

182

After-hours care in Canada Analysis of the 2001 National Family Physician Workforce Survey  

Microsoft Academic Search

OBJECTIVE To determine family physicians' availability to their general practice patients after hours and to explore the characteristics and determinants of after-hours services. DESIGN Secondary analysis of the 2001 National Family Physician Workforce Survey. SETTING Canada. PARTICIPANTS Canadian family physicians and general practitioners currently in practice (n=10 553). MAIN OUTCOME MEASURES Provision of after-hours care, defi ned as providing care

Eric J. Crighton; Risa Bordman; David Wheler; David White

183

Geology for a changing world 2010-2020-Implementing the U.S. Geological Survey science strategy  

USGS Publications Warehouse

This report describes a science strategy for the geologic activities of the U.S. Geological Survey (USGS) for the years 2010-2020. It presents six goals with accompanying strategic actions and products that implement the science directions of USGS Circular 1309, 'Facing Tomorrow's Challenges-U.S. Geological Survey Science in the Decade 2007-2017.' These six goals focus on providing the geologic underpinning needed to wisely use our natural resources, understand and mitigate hazards and environmental change, and understand the relationship between humans and the environment. The goals emphasize the critical role of the USGS in providing long-term research, monitoring, and assessments for the Nation and the world. Further, they describe measures that must be undertaken to ensure geologic expertise and knowledge for the future. The natural science issues facing today's world are complex and cut across many scientific disciplines. The Earth is a system in which atmosphere, oceans, land, and life are all connected. Rocks and soils contain the answers to important questions about the origin of energy and mineral resources, the evolution of life, climate change, natural hazards, ecosystem structures and functions, and the movements of nutrients and toxicants. The science of geology has the power to help us understand the processes that link the physical and biological world so that we can model and forecast changes in the system. Ensuring the success of this strategy will require integration of geological knowledge with the other natural sciences and extensive collaboration across USGS science centers and with partners in Federal, State, and local agencies, academia, industry, nongovernmental organizations and, most importantly, the American public. The first four goals of this report describe the scientific issues facing society in the next 10 years and the actions and products needed to respond to these issues. The final two goals focus on the expertise and infrastructure needed to ensure the long-term sustainability of the geological sciences in the USGS. The ultimate goal of USGS science and of the strategy laid out in this document is to contribute to the development of a sustainable society that operates in harmony with the Earth systems that society depends upon. As we begin the second decade of the 21st century, our Nation faces growing challenges in resource availability, climate and environmental change, and natural hazards. Meeting these challenges will require strong collaboration across the natural and social sciences and extensive partnerships with both the public and private sectors. The six goals described in this document represent a mix of scientific focus areas and operational necessities that together provide a comprehensive roadmap for USGS geologic science to effectively contribute to the USGS mission, providing science for a changing world.

Gundersen, Linda C.S.; Belnap, Jayne; Goldhaber, Martin; Goldstein, Arthur; Haeussler, Peter J.; Ingebritsen, S.E.; Jones, John W.; Plumlee, Geoffrey S.; Thieler, E. Robert; Thompson, Robert S.; Back, Judith M.

2011-01-01

184

The use of U.S. Geological Survey CD-ROM-based petroleum assessments in undergraduate geology laboratories  

USGS Publications Warehouse

Domestic oil production is declining and United States reliance on imported oil is increasing. America will be faced with difficult decisions that address the strategic, economic, and political consequences of its energy resources shortage. The geologically literate under-graduate student needs to be aware of current and future United States energy issues. The U.S. Geological Survey periodically provides energy assessment data via digitally-formatted CD-ROM publications. These publications are free to the public, and are well suited for use in undergraduate geology curricula. The U.S. Geological Survey (USGS) 1995 National Assessment of United States Oil and Gas Resources (Digital Data Series or DDS-30) (Gautier and others, 1996) is an excellent resource for introducing students to the strategies of hydrocarbon exploration and for developing skills in problem-solving and evaluating real data. This paper introduces the reader to DDS-30, summarizes the essential terminology and methodology of hydrocarbon assessment, and offers examples of exercises or questions that might be used in the introductory classroom. The USGS contact point for obtaining DDS-30 and other digital assessment volumes is also provided. Completing the sample exercises in this report requires a copy of DDS-30.

Eves, R.L.; Davis, L.E.; Dyman, T.S.; Takahashi, K.I.

2002-01-01

185

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

186

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 Mineral Industry Surveys (Data) Telephone: (703) 648-7955 Fax: (703) 648-7975 E-mail: shakim@usgs.gov Internet: http://minerals.usgs.gov/minerals to purchase the Pinto Valley Mine in Arizona from BHP Billiton for $650 million. Capstone is a mining company

187

The Canada-France Ecliptic Plane Survey : First (L3) data release  

NASA Astrophysics Data System (ADS)

The Canada-France Ecliptic Plane Survey (CFEPS) is a search of about 400 square degrees around the ecliptic to R-band magnitude of roughly 23.2, as one portion of the Canada-France-Hawaii Telescope's Legacy Survey. CFEPS provides discovery and some of the long-term tracking of discovered objects needed to provide orbital inforamtion to study the dynamical structure of the Kuiper Belt. This 5-year project is now just slightly over half completed and the first data release (named L3) has just occurred, including all the objects discovered in the first year of the survey since these have now been tracked over 3 oppositions and have orbits with semimajor axes known to 0.1 percent accuracy. We will review the design of the Ecliptic Survey, demonstrating the need for the timing sequence used, and repeat the need for a large FOV mosaic camera for 1-year recoveries to avoid orbital biases. We will show how our survey was able to recover some lost MPC objects, why they were lost, and how our strategy avoided further loss. We will then give an overview of the objects that form part of the CFEPS L3 release. The two most important products from this survey are an "unbiased" database of orbital elements of TNOs, and the characterization of their discovery. We find the surprising result that about one-third of the L3 objects are resonant. We have developed a CFEPS survey simulator which allows theoreticians to filter a theoretically-derived orbital distribution with the actual detections of CFEPS. In a companion presentation, Gladman et al. will present the first modelling of the outer solar system using the survey simulator and characterization of the first year of the Ecliptic Survey.

Petit, Jean-Marc; Gladman, B.; Kavelaars, J. J.; Jones, R. L.; Parker, J.; Bieryla, A.

2006-09-01

188

Geology  

SciTech Connect

This chapter summarizes the geology of the single-shell tank (SST) farms in the context of the region’s geologic history. This chapter is based on the information in the geology data package for the SST waste management areas and SST RFI Appendix E, which builds upon previous reports on the tank farm geology and Integrated Disposal Facility geology with information available after those reports were published.

Reidel, Stephen P.

2008-01-17

189

Issues of geologically-focused situational awareness in robotic planetary missions: Lessons from an analogue mission at Mistastin Lake impact structure, Labrador, Canada  

NASA Astrophysics Data System (ADS)

Remote robotic data provides different information than that obtained from immersion in the field. This significantly affects the geological situational awareness experienced by members of a mission control science team. In order to optimize science return from planetary robotic missions, these limitations must be understood and their effects mitigated to fully leverage the field experience of scientists at mission control.Results from a 13-day analogue deployment at the Mistastin Lake impact structure in Labrador, Canada suggest that scale, relief, geological detail, and time are intertwined issues that impact the mission control science team's effectiveness in interpreting the geology of an area. These issues are evaluated and several mitigation options are suggested. Scale was found to be difficult to interpret without the reference of known objects, even when numerical scale data were available. For this reason, embedding intuitive scale-indicating features into image data is recommended. Since relief is not conveyed in 2D images, both 3D data and observations from multiple angles are required. Furthermore, the 3D data must be observed in animation or as anaglyphs, since without such assistance much of the relief information in 3D data is not communicated. Geological detail may also be missed due to the time required to collect, analyze, and request data.We also suggest that these issues can be addressed, in part, by an improved understanding of the operational time costs and benefits of scientific data collection. Robotic activities operate on inherently slow time-scales. This fact needs to be embraced and accommodated. Instead of focusing too quickly on the details of a target of interest, thereby potentially minimizing science return, time should be allocated at first to more broad data collection at that target, including preliminary surveys, multiple observations from various vantage points, and progressively smaller scale of focus. This operational model more closely follows techniques employed by field geologists and is fundamental to the geologic interpretation of an area. Even so, an operational time cost/benefit analyses should be carefully considered in each situation, to determine when such comprehensive data collection would maximize the science return.Finally, it should be recognized that analogue deployments cannot faithfully model the time scales of robotic planetary missions. Analogue missions are limited by the difficulty and expense of fieldwork. Thus, analogue deployments should focus on smaller aspects of robotic missions and test components in a modular way (e.g., dropping communications constraints, limiting mission scope, focusing on a specific problem, spreading the mission over several field seasons, etc.).

Antonenko, I.; Osinski, G. R.; Battler, M.; Beauchamp, M.; Cupelli, L.; Chanou, A.; Francis, R.; Mader, M. M.; Marion, C.; McCullough, E.; Pickersgill, A. E.; Preston, L. J.; Shankar, B.; Unrau, T.; Veillette, D.

2013-07-01

190

Framework for a U.S. Geological Survey Hydrologic Climate-Response Program in Maine  

USGS Publications Warehouse

It is important to monitor hydrologic systems in the United States that could change dramatically over the short term as a result of climate change. Many ecological effects of climate change can be understood only if hydrologic data networks are in place. Because of its humid, temperate climate and its substantial annual snowpack, Maine's seasonal water cycle is sensitive to air temperature changes (Hodgkins and others, 2003). Monitoring of relevant hydrologic data would provide important baseline information against which future climate change can be measured. A series of recent investigations by the U.S. Geological Survey (USGS) has documented changes in several components of the water cycle, including earlier snowmelt runoff in Maine during the last 30 to 40 years (Hodgkins and others, 2003), earlier lake- and river-ice breakups (Hodgkins and others, 2002; Hodgkins and others, 2005), and a denser and thinner late-winter snowpack (Hodgkins and Dudley, 2006). Snowmelt runoff timing was measured as the date, each year, by which half of the total winter-spring streamflow passed a streamflow-gaging station. Historical snowmelt runoff timing for the Piscataquis River in central Maine is shown in figure 1 as an example. Results of climate projections input to hydrologic models indicate that hydrologic trends, such as earlier spring snowmelt runoff, are expected to continue into the future (Hayhoe and others, 2007). These trends could affect species at the southern edge of their range in Maine, such as Atlantic salmon and Canada lynx, and may also affect availability of water for human use. This fact sheet describes the framework of a hydrologic climate-response program that would improve understanding of the effects of future climate change in Maine.

Hodgkins, Glenn A.; Lent, Robert M.; Dudley, Robert W.; Schalk, Charles W.

2009-01-01

191

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

192

Racialized identity and health in Canada: results from a nationally representative survey.  

PubMed

This article uses survey data to investigate health effects of racialization in Canada. The operative sample was comprised of 91,123 Canadians aged 25 and older who completed the 2003 Canadian Community Health Survey. A "racial and cultural background" survey question contributed a variable that differentiated respondents who identified with Aboriginal, Black, Chinese, Filipino, Latin American, South Asian, White, or jointly Aboriginal and White racial/cultural backgrounds. Indicators of diabetes, hypertension and self-rated health were used to assess health. The healthy immigrant effect suppressed some disparity in risk for diabetes by racial/cultural identification. In logistic regression models also containing gender, age, and immigrant status, no racial/cultural identifications corresponded with significantly better health outcomes than those reported by survey respondents identifying as White. Subsequent models indicated that residential locale did little to explain the associations between racial/cultural background and health and that socioeconomic status was only implicated in relatively poor health outcomes for respondents identifying as Aboriginal or Aboriginal/White. Sizable and statistically significant relative risks for poor health for respondents identifying as Aboriginal, Aboriginal/White, Black, Chinese, or South Asian remained unexplained by the models, suggesting that other explanations for health disparities by racialized identity in Canada - perhaps pertaining to experiences with institutional racism and/or the wear and tear of experiences of racism and discrimination in everyday life - also deserve empirical investigation in this context. PMID:19560246

Veenstra, Gerry

2009-08-01

193

Resolution versus Speckle Relative to Geologic Interpretability of Spaceborne Radar Images: A Survey of User Preference  

Microsoft Academic Search

A survey was conducted to evaluate user preference for resolution versus speckle relative to the geologic interpretability of spaceborne radar images. Thirteen different resolution\\/looks combinations were simulated from Seasat synthetic-aperture radar (SAR) data of each of three test sites. The SAR images were distributed with questionnarires for analysis by eighty-five earth scientists. The relative discriminability of geologic targets at each

J. P. Ford

1982-01-01

194

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

195

Canada's health promotion survey as a milestone in public health research.  

PubMed

This commentary describes the contribution of the 1985 Canadian National Health Promotion Survey to the development of public health research and policy-making in Canada and argues that on the basis of that contribution, it should be considered to be a public health research milestone. In terms of research, among its contributions which subsequently have been adopted in other survey studies were: going beyond risk factors to operationalize concepts implicit in the Ottawa Charter for Health Promotion; empowering users to participate in knowledge translation, sharing and transfer; ensuring sufficient sample sizes for each jurisdiction to be able to confidently generalize to its population; establishing a model as well as questions for subsequent health surveys; encouraging widespread use of data through making them available early; and developing and using an explicit social marketing strategy to reach target audiences, including the general public. With regard to policy-making, among its contributions which have been adopted were: using survey data to develop and enhance healthy public policy initiatives; encouraging researchers to work with policy-makers in developing policies; using survey data to contribute to the evaluation of public health initiatives; engaging policy-makers in the development of surveys; and encouraging the use of survey data for advocacy. PMID:21370775

Rootman, Irving; Warren, Reg; Catlin, Gary

2010-01-01

196

Skills required of dairy veterinarians in western Canada: A survey of practicing veterinarians  

PubMed Central

This study determined skills required of entry-level veterinarians for dairy practice in western Canada and compared mixed and dairy practitioners in the skills that they perform. We surveyed western Canadian veterinarians involved in dairy practice, focusing primarily on clinical activity of respondents. Response rate was 39.4% (281/714). Respondents were classified as either mixed practitioners (< 10% time in dairy practice) or dairy practitioners (> 75% time in dairy practice). For both groups, individual animal medicine and surgery skills were performed more commonly than herd health skills. The most important skills identified were those required for basic theriogenology, physical examination, treatment of common disorders, and general surgery. These results underscore the continued importance of individual animal skills in food animal practice in western Canada. PMID:23997264

Luby, Christopher D.; McIntyre, Katelyn; Jelinski, Murray D.

2013-01-01

197

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

198

Geologic Survey of the Ewing Bank, Northern Gulf of Mexico  

E-print Network

Extruded and Split…………………………………….. 54 32 Box Core 4 Extruded and Split…………………………………….. 55 33 Box Core 5 Extruded and Split…………………………………….. 56 34 Miniature Vane Instrument………………………………………… 57 35 Box Core Miniature Vane Results Plot……………………………. 58 36.... SUB-BOTTOM PROFILER…………………………………………….. 12 4.1 Methods – Sub-bottom Profiler………………………………… 12 4.2 Results – Sub-bottom Profiler…………………………...…….. 13 5. GEOLOGIC CORES……………………………………………………. 42 5.1 Methods – Box Core……………………………………………. 42 5.2 Results...

Brooks, Daniel M

2014-04-04

199

Remote predictive mapping of bedrock geology using image classification of Landsat and SPOT data, western Minto Inlier, Victoria Island, Northwest Territories, Canada  

Microsoft Academic Search

Supervised classification (robust classification method) of Landsat-7 and SPOT-5 data was used to analyse the bedrock geology of a part of the western Minto Inlier on Victoria Island, Canada. The robust classification method was used as it provides a series of uncertainty measures for evaluating the classification results. Six bedrock classes including gabbro, basalt, carbonate of the Wynniatt Formation, quartz-arenite

P. Behnia; J. R. Harris; R. H. Rainbird; M. C. Williamson; M. Sheshpari

2012-01-01

200

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

201

Structural and engineering geology of the East Gate Landslide, Purcell Mountains, British Columbia, Canada  

E-print Network

Structural and engineering geology of the East Gate Landslide, Purcell Mountains, British Columbia 27 January 2006; accepted 31 January 2006 Abstract The East Gate Landslide is a prehistoric landslide with the location of the headscarp of the East Gate Landslide. Four discontinuity sets were recognised from detailed

Smith, Dan

202

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

203

37 New T-type Brown Dwarfs in the Canada-France Brown Dwarfs Survey  

NASA Astrophysics Data System (ADS)

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 deg2. Image analysis is now completed while J-band follow-up campaigns are ~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, Loïc; Artigau, Étienne; Delorme, Philippe; Reylé, Céline; Forveille, Thierry; Delfosse, Xavier; Willott, Chris J.

2011-06-01

204

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

205

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.

206

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

207

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

208

Bibliography of Oklahoma hydrology; reports prepared by the U.S. Geological Survey and principal cooperating agencies, 1901-88  

USGS Publications Warehouse

Reports on the hydrology of Oklahoma have been issued by the U.S. Geological Survey since 1901. This bibliography lists reports on hydrology in Oklahoma prepared by the U.S. Geological Survey and the principal State cooperating agencies, the Oklahoma Geological Survey and the Oklahoma Water Resources Board. Of the nearly 350 reports issued from 1901 through 1988, about 200 have been concerned primarily with groundwater; the remainder have dealt with some aspect of surface water, water quality, or geology. The reports are listed by agency and report type, and are indexed both by author and subject. (USGS)

Havens, John S., (compiler)

1989-01-01

209

Bayesian Galaxy Shape Measurement for Weak Lensing Surveys - III. Application to the Canada-France-Hawaii Telescope Lensing Survey  

E-print Network

A likelihood-based method for measuring weak gravitational lensing shear in deep galaxy surveys is described and applied to the Canada-France-Hawaii Telescope (CFHT) Lensing Survey (CFHTLenS). CFHTLenS comprises 154 sq deg of multicolour optical data from the CFHT Legacy Survey, with lensing measurements being made in the i' band to a depth i'(AB)<24.7, for galaxies with signal-to-noise ratio greater than about 10. The method is based on the lensfit algorithm described in earlier papers, but here we describe a full analysis pipeline that takes into account the properties of real surveys. The method creates pixel-based models of the varying point spread function (PSF) in individual image exposures. It fits PSF-convolved two-component (disk plus bulge) models, to measure the ellipticity of each galaxy, with bayesian marginalisation over model nuisance parameters of galaxy position, size, brightness and bulge fraction. The method allows optimal joint measurement of multiple, dithered image exposures, taking i...

Miller, L; Kitching, T D; Van Waerbeke, L; Erben, T; Hildebrandt, H; Hoekstra, H; Mellier, Y; Rowe, B T P; Coupon, J; Dietrich, J P; Fu, L; Harnois-Deraps, J; Hudson, M J; Kilbinger, M; Kuijken, K; Schrabback, T; Semboloni, E; Vafaei, S; Velander, M

2013-01-01

210

Bayesian galaxy shape measurement for weak lensing surveys - III. Application to the Canada-France-Hawaii Telescope Lensing Survey  

NASA Astrophysics Data System (ADS)

A likelihood-based method for measuring weak gravitational lensing shear in deep galaxy surveys is described and applied to the Canada-France-Hawaii Telescope (CFHT) Lensing Survey (CFHTLenS). CFHTLenS comprises 154 deg2 of multi-colour optical data from the CFHT Legacy Survey, with lensing measurements being made in the i' band to a depth i'AB < 24.7, for galaxies with signal-to-noise ratio ?SN ? 10. The method is based on the lensfit algorithm described in earlier papers, but here we describe a full analysis pipeline that takes into account the properties of real surveys. The method creates pixel-based models of the varying point spread function (PSF) in individual image exposures. It fits PSF-convolved two-component (disc plus bulge) models to measure the ellipticity of each galaxy, with Bayesian marginalization over model nuisance parameters of galaxy position, size, brightness and bulge fraction. The method allows optimal joint measurement of multiple, dithered image exposures, taking into account imaging distortion and the alignment of the multiple measurements. We discuss the effects of noise bias on the likelihood distribution of galaxy ellipticity. Two sets of image simulations that mirror the observed properties of CFHTLenS have been created to establish the method's accuracy and to derive an empirical correction for the effects of noise bias.

Miller, L.; Heymans, C.; Kitching, T. D.; van Waerbeke, L.; Erben, T.; Hildebrandt, H.; Hoekstra, H.; Mellier, Y.; Rowe, B. T. P.; Coupon, J.; Dietrich, J. P.; Fu, L.; Harnois-Déraps, J.; Hudson, M. J.; Kilbinger, M.; Kuijken, K.; Schrabback, T.; Semboloni, E.; Vafaei, S.; Velander, M.

2013-03-01

211

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@coas.oregonstate.edu Program Elements: I-Products for Earthquake Loss Reduction; II-Research on Earthquake Occurrence

Goldfinger, Chris

212

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 Clemson, South Carolina, 29634, USA Tel.: (Office) +1 864.656.6190, (Home) +1 864.653.3872 Email: pjodice-June 2004), U.S. Geological Survey, South Carolina Cooperative Fish and Wildlife Research Unit, Clemson

Jodice, Patrick

213

A history of the Water Resources Division, U.S. Geological Survey. Volume VII, 1966-79, integrating the disciplines  

USGS Publications Warehouse

This volume is the seventh in the series of reports on the history of the water-resources activities of the U.S. Geological Survey. The first four volumes were written by Robert Follansbee, and each is entitled "A History of the Water Resources Branch of the United States Geological Survey."

Biesecker, James E.; Blakey, James F.; Feltz, Herman R.; George, John R.

2000-01-01

214

DATA ACQUISITION AND APPLICATIONS OF SIDE-LOOKING AIRBORNE RADAR IN THE U. S. GEOLOGICAL SURVEY.  

USGS Publications Warehouse

The Side-Looking Airborne Radar (SLAR) program encompasses a multi-discipline effort involving geologists, hydrologists, engineers, geographers, and cartographers of the U. S. Geological Survey (USGS). Since the program began in 1980, more than 520,000 square miles of aerial coverage of SLAR data in the conterminous United States and Alaska have been acquired or contracted for acquisition. The Geological Survey has supported more than 60 research and applications projects addressing the use of this technology in the earth sciences since 1980. These projects have included preparation of lithographic reproductions of SLAR mosaics, research to improve the cartographic uses of SLAR, research for use of SLAR in assessing earth hazards, and studies using SLAR for energy and mineral exploration through improved geologic mapping.

Jones, John Edwin; Kover, Allan N.

1985-01-01

215

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

216

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

E-print Network

of U.S. Forest and Soil Organic Carbon Storage and Forest Biomass Carbon Sequestration Capacity #12 and Soil Organic Carbon Storage and Forest Biomass Carbon Sequestration Capacity By Eric T. Sundquist,1 carbon sequestration capacity: U.S. Geological Survey Open-File Report 2009­1283, 15 p., available

217

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

E-print Network

in the U.S. Geological Survey By W.E. Sanford, J.S. Caine, D.A. Wilcox, H.C. McWreath, and J.R. Nicholas this report. Suggested citation: Sanford, W.E., Caine, J.S., Wilcox, D.A., McWreath, H.C., and Nicholas, J

218

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

E-print Network

.S. GEOLOGICAL SURVEY and the U.S. FOREST SERVICE--OUR VOLCANIC PUBLIC LANDS Mount St. Helens, 1980 to Now and transport sediment away from the volcano. Meanwhile, magma (mol- ten rock) is accumulating again beneath, the camera symbol ( ) calls attention to video clips of volcanic processes that can be accessed from

Torgersen, Christian

219

U.S. Geological Survey Federal-State Program (water quality)  

USGS Publications Warehouse

The program is a partnership between the Geological Survey and State and local agencies for the collection of the hydrologic information needed for the continuing determination and evaluation of the quantity, quality, and use of the nation's water resources. A number of typical examples of projects within the program are presented. -from ASCE Publications Abstracts

Buchanan, T.J.; Gilbert, B.K.

1982-01-01

220

The Italian Geological Survey: the Early History of a Divided Community  

E-print Network

. There is an excellent, ground-breaking biography of Quintino Sella (1827-1884), the wealthy Piedemontese scientist on the history of one of the least studied episodes in the troubled relationship between the modern Italian State no reference to the fact that the Geological Survey of Italy had been set up in the early weeks of 1862

Paris-Sud XI, Université de

221

Bibliography of glacier studies by the U.S. Geological Survey  

USGS Publications Warehouse

Reports on glaciers written by U.S. Geological Survey members between 1896 and early 1996 are listed. The reports contain information about glacier and had at least one USGS author or was dependent on USGS data or projects. Extensive glacier studies have been done by the USGS in North America, Greenland, Iceland, as well as in Antarctica.

Snyder, E.F.

1996-01-01

222

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

E-print Network

the Marcellus Shale an important natural gas resource. The Marcellus Shale extends from southern New York across of which now form the Catskill Mountains in New York (Schwietering, 1979). The basin floor subsided under.S. Geological Survey, New York Water Science Center, 30 Brown Road, Ithaca, NY 14850 Figure 1. Distribution

Boyer, Elizabeth W.

223

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

E-print Network

, Vancouver, WA 98661 2. U.S. Geological Survey, Hawaiian Volcano Observatory, P.O. Box 51, Hawaii National lahars that flow far down valleys; (2) the long-term adjustment of river channels to the large quantities lahars that sweep far downstream. The last class need not be associated with eruptive activity

224

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

E-print Network

U.S. Department of the Interior U.S. Geological Survey Data Series 701 Prepared in cooperation with Coastal Protection and Restoration Authority of Louisiana, U.S. Army Corps of Engineers, U.S. Environmental Protection Agency, U.S. Fish and Wildlife Service, Natural Resources Conservation Service

225

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.

U.S. Geological Survey

1977-01-01

226

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....

227

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

228

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

E-print Network

with white muzzle and spots on wings typical of white-nose syndrome. (Photo by Greg Turner, Pennsylvania Game on recycled paper White-nose syndrome (WNS) is a devastating disease that has killed millions of hibernating-nose_ syndrome/index.jsp. National Wildlife Health Center White-Nose Syndrome in Bats: U.S. Geological Survey

Fleskes, Joe

229

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

E-print Network

, Paul C.D. Milly, Robin O'Malley, and Robert S. Thompson Open-File Report 2011­1033 #12;U.S. Department-use change, U.S. Geological Survey Open-File Report 2011­1033, 32 p., at http://pubs.usgs.gov/of/2011/1033

230

Fish Health, Fungal Infections, and Pfiesteria: The Role of the U.S. Geological Survey  

NSDL National Science Digital Library

This United States Geological Survey article describes the work currently being done to understand the relation between Pfiesteria and other pathogens to fish and human health in the Chesapeake Bay and other Mid-Atlantic estuaries. It also discusses natural and man-induced factors (such as nutrients and sediment), as well as future issues and management implications.

Blazer, Vicki

231

FAMILY PREPAREDNESS According to the U.S. Geological Survey, there is  

E-print Network

and discuss disaster plans with household members. Teenagers and adult members of the household should share plans for each member of the family to reach the safe refuge area. Make sure you have adequate emergencyFAMILY PREPAREDNESS According to the U.S. Geological Survey, there is a 60% probability of an >6

Shinozuka, Masanobu

232

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

E-print Network

as well as fishery and wildlife needs. Demands for clean and abundant water for drinking, recreation- tions within 1­3 hours are being tested by USGS personnel for use with recreational waters in OhioU.S. Department of the Interior U.S. Geological Survey November 2008 Water Quality and Ecology

233

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

E-print Network

://www.cnsm.csulb.edu]. Cover art by Jeanne DiLeo, USGS, Menlo Park, Calif. #12;Modeling of Selenium for the San Diego Creek of the Interior U.S. Geological Survey Open-File Report 2009-1114 Modeling of Selenium for the San Diego Creek, California State University, Long Beach, College of Natural Science and Mathematics [http

234

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.........................................................................................................................................3 Sources of Sediment Depositional Provinces From Factor Analysis Sediment Movement Beyond...........................................................................................................................6 List of Tables 1. Drainage area and discharge rate of rivers ofthe western United States

235

The U.S. Geological Survey Federal-State Cooperative Water- Resources Program: Fiscal Year 1988  

USGS Publications Warehouse

The Federal-State Cooperative Program is a partnership between the U.S. Geological Survey and State and local agencies. It provides a balanced approach to the study and resolution of water-related problems and to acquiring hydrologic data. The principal program objectives are to: (1) collect, on a systematic basis, data needed for the continuing determination and evaluation of the quantity, quality, and use of the Nation's water resources, and (2) appraise the availability and the physical, chemical, and biological characteristics of surface and ground water through analytical and interpretive investigations. During fiscal year 1988, hydrologic data collection, interpretive investigations, and research were conducted by Geological Survey personnel in offices in every State, Puerto Rico, and several territories in cooperation with more than 1,000 local, State, and regional agencies. In fiscal year 1988, Federal funding of almost $60 million was matched by cooperating agencies, who also provided approximately $6 million unmatched for a total program of about $126 million. This amounted to more than 40 percent of the total funds for Geological Survey water-resources activities. This report presents examples of current (1988) investigations. It also lists about 250 water-resources investigations related to agricultural activities that the Geological Survey conducted from 1970 to 1988.

Gilbert, Bruce K.; Mann, William B., IV

1989-01-01

236

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.

U.S. Geological Survey

2005-01-01

237

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

E-print Network

-Discharge Relations for the Colorado River in Glen, Marble, and Grand Canyons, Arizona, 1990-2005 #12;Stage-Discharge Relations for the Colorado River in Glen, Marble, and Grand Canyons, Arizona, 1990-2005 By Joseph E. Hazel River in Glen, Marble, and Grand Canyons, Arizona: U.S. Geological Survey Open-File Report 2006-1243, 7

238

A U.S. Geological Survey marker embedded in the northeast corner ...  

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

A U.S. Geological Survey marker embedded in the northeast corner of concrete abutment. This view also shows the basic abutment and tower footing arrangement. - Potomac Edison Company, Chesapeake & Ohio Canal Bridge, Spanning C & O Canal South of U.S. 11, Williamsport, Washington County, MD

239

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...

240

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

E-print Network

maps along with their USGS stream conditions and NWS flood warning forecasts. These data, when used events, visible hydrographs are frequently updated to reflect current and predicted flood conditionsU.S. Department of the Interior U.S. Geological Survey USGS Flood Inundation Mapper Users Guide

Torgersen, Christian

241

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

E-print Network

° 20° 20° 10° 10° M7.0 Haiti Earthquake of 12 January 2010 0 250 500125 Kilometers DATA SOURCES Network Tectonic Setting Epicentral Region TECTONIC SUMMARY The Haiti earthquake of January 12, 2010Map prepared by U.S. Geological Survey National Earthquake Information Center 14 January 2010

Abbott Jr., Richard N.

242

The 5:1 Resonance as Probed by the Canada-France Ecliptic Plane Survey  

NASA Astrophysics Data System (ADS)

We examined the 5:1 resonant Kuiper Belt Object (KBO) detections in the Canada-France Ecliptic Plane Survey (CFEPS) and calculated a population estimate for this significant dynamical sub-population. The CFEPS survey identified and classified KBOs in over 700 square degrees of sky, split between near ecliptic and high latitude fields. One object near the 5:1 resonance with Neptune was detected in the ecliptic fields, and three additional objects were detected in the CFEPS high latitude fields. Understanding the significance of object detections in a survey requires knowledge of the survey depth and followup observations in order to determine detection efficiencies for an underlying population. The detection biases against finding these distant resonators are additionally complex due to the phase relationships between resonant objects and Neptune. Objects in a 5:1 resonance with Neptune can only reach perihelion at approximately 70, 180, or 290 degrees from Neptune, with the width of these resonant islands dependent on libration amplitude. CFEPS only detected 5:1 resonant objects near perihelion due to their large semi-major axes, approximately 88 AU. Because of this perihelion dependence, the survey pointings introduce a significant bias into the detection efficiency. The large eccentricities and inclinations of the detected objects also suggests a significant underlying population. The 5:1 resonant population is a cosmogonic lever which provides insight into the evolutionary history of the solar system.

Pike, Rosemary E.; Kavelaars, J. J.; Petit, J. M.; Gladman, B. J.

2013-10-01

243

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

244

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

245

The ultracool eld dwarfs luminosity function from the Canada-France Brown Dwarf Survey  

E-print Network

The Canada-France Brown Dwarf Survey is a wide eld survey for cool brown dwarfs conducted with the MegaCam camera on the CFHT telescope. Our objectives are to nd ultracool brown dwarfs and to constrain the eld brown dwarf mass function from a large and homogeneous sample of L and T dwarfs. We identify candidates in CFHT/Megacam i' and z' images and follow them up with pointed NIR imaging on several telescopes. Our survey has to date found 50 T dwarfs candidates and 170 L or late M dwarf candidates drawn from a larger sample of 1300 candidates with typical ultracool dwarfs i'-z' colours, found in 900 square degrees. We currently have completed the NIR follow-up on a large part of the survey for all candidates from the latest T dwarfs known to the late L color range. This allows us to build on a complete and well de ned sample of ultracool dwarfs to investigate the luminosity function of eld L and T dwarfs.

C. Reyle; P. Delorme; X. Delfosse; T. Forveille; C. Willott; L. Albert; E. Artigau

2008-12-19

246

The Black Mountain tectonic zone--a reactivated northeast-trending crustal shear zone in the Yukon-Tanana Upland of east-central Alaska: Chapter D in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project  

USGS Publications Warehouse

The Black Mountain tectonic zone in the YukonTanana terrane of east-central Alaska is a belt of diverse northeast-trending geologic features that can been traced across Black Mountain in the southeast corner of the Big Delta 1°×3° degree quadrangle. Geologic mapping in the larger scale B1 quadrangle of the Big Delta quadrangle, in which Black Mountain is the principal physiographic feature, has revealed a continuous zone of normal and left-lateral strikeslip high-angle faults and shear zones, some of which have late Tertiary to Quaternary displacement histories. The tectonic zone includes complexly intruded wall rocks and intermingled apophyses of the contiguous mid-Cretaceous Goodpaster and Mount Harper granodioritic plutons, mafic to intermediate composite dike swarms, precious metal mineralization, early Tertiary volcanic activity and Quaternary fault scarps. These structures define a zone as much as 6 to 13 kilometers (km) wide and more than 40 km long that can be traced diagonally across the B1 quadrangle into the adjacent Eagle 1°×3° quadrangle to the east. Recurrent activity along the tectonic zone, from at least mid-Cretaceous to Quaternary, suggests the presence of a buried, fundamental tectonic feature beneath the zone that has influenced the tectonic development of this part of the Yukon-Tanana terrane. The tectonic zone, centered on Black Mountain, lies directly above a profound northeast-trending aeromagnetic anomaly between the Denali and Tintina fault systems. The anomaly separates moderate to strongly magnetic terrane on the northwest from a huge, weakly magnetic terrane on the southeast. The tectonic zone is parallel to the similarly oriented left-lateral, strike-slip Shaw Creek fault zone 85 km to the west.

O'Neill, J. Michael; Day, Warren C.; Alienikoff, John N.; Saltus, Richard W.

2007-01-01

247

Earth science photographs from the U.S. Geological Survey Library  

USGS Publications Warehouse

This CD-ROM set contains 1,500 scanned photographs from the U.S. Geological Survey Library for use as a photographic glossary of elementary geologic terms. Scholars are encouraged to copy these public domain images into their reports or databases to enhance their presentations. High-quality prints and (or) slides are available upon request from the library. This CD-ROM was produced in accordance with the ISO 9660 standard; however, it is intended for use on DOS-based computer systems only.

McGregor, Joseph K.; Abston, Carl C.

1995-01-01

248

Recent Advances in Mapping Deep Permafrost and Gas Hydrate Occurrences Using Industry Seismic Data, Richards Island Area, Northwest Territories, Canada  

E-print Network

101 Recent Advances in Mapping Deep Permafrost and Gas Hydrate Occurrences Using Industry Seismic of Canada Scott Dallimore Geological Survey of Canada Abstract A 3D seismic reflection survey acquired by industry over the Mallik area in 2002 is used to map heterogeneities in permafrost and to determine

Ramachandran, Kumar

249

Surface-water, ground-water, and sediment geochemistry of epizonal and shear-hosted mineral deposits in the Tintina Gold Province--arsenic and antimony distribution and mobility: Chapter G in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project  

USGS Publications Warehouse

Epigenetic mineral deposits in the Tintina Gold Province are generally characterized by high concentrations of arsenic and antimony in their mineral assemblage. A total of 347 samples (ground water, surface water, and stream sediment) were collected to investigate the distribution and mobility of arsenic and antimony in the environment near known mineral deposits. Samples were collected from east to west at Keno Hill and Brewery Creek, Yukon, Canada; and Cleary Hill, True North, Scrafford Mine, Fairbanks, Ryan Lode, Stampede Creek, Slate Creek, and Donlin Creek, all in Alaska. Surface- and ground-water samples are all slightly acidic to near-neutral in pH (5-8), have a wide range in specific conductance (surface water 17-2,980 microsiemens per centimeter and ground water 170-2,940 microsiemens per centimeter), and show elevated dissolved arsenic and antimony concentrations (arsenic in surface water is less than 1 to 380 micrograms per liter and in ground water is less than 1 micrograms per liter to 1.5 milligrams per liter; antimony in surface water is less than 2 to 660 micrograms per liter and in ground water is less than 2 to 60 micrograms per liter). Stream sediments downstream from these deposits have high concentrations of arsenic and antimony (arsenic median is 1,670 parts per million, maximum is 10,000 parts per million; antimony median is 192 parts per million, maximum is 7,200 parts per million). The mobility of arsenic and antimony is controlled by the local redox environment, with arsenic being less mobile in oxidized surface waters relative to antimony, and arsenic more mobile in reduced ground water. These factors suggest that both antimony and arsenic may be useful pathfinder elements in water and sediment for targeting similar style deposits elsewhere in the Tintina Gold Province.

Mueller, Seth H.; Goldfarb, Richard J.; Verplanck, Philip L.; Trainor, Thomas P.; Sanzolone, Richard F.; Adams, Monique

2007-01-01

250

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

251

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

252

CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey  

NASA Astrophysics Data System (ADS)

We present the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) that accurately determines a weak gravitational lensing signal from the full 154 deg2 of deep multicolour data obtained by the CFHT Legacy Survey. Weak gravitational lensing by large-scale structure is widely recognized as one of the most powerful but technically challenging probes of cosmology. We outline the CFHTLenS analysis pipeline, describing how and why every step of the chain from the raw pixel data to the lensing shear and photometric redshift measurement has been revised and improved compared to previous analyses of a subset of the same data. We present a novel method to identify data which contributes a non-negligible contamination to our sample and quantify the required level of calibration for the survey. Through a series of cosmology-insensitive tests we demonstrate the robustness of the resulting cosmic shear signal, presenting a science-ready shear and photometric redshift catalogue for future exploitation.

Heymans, Catherine; Van Waerbeke, Ludovic; Miller, Lance; Erben, Thomas; Hildebrandt, Hendrik; Hoekstra, Henk; Kitching, Thomas D.; Mellier, Yannick; Simon, Patrick; Bonnett, Christopher; Coupon, Jean; Fu, Liping; Harnois Déraps, Joachim; Hudson, Michael J.; Kilbinger, Martin; Kuijken, Koenraad; Rowe, Barnaby; Schrabback, Tim; Semboloni, Elisabetta; van Uitert, Edo; Vafaei, Sanaz; Velander, Malin

2012-11-01

253

The Canada-France Ecliptic Plane Survey: Strategy, Details and Results  

NASA Astrophysics Data System (ADS)

Over the last three years, the Very Wide component of the CFHT Legacy Survey has repeatedly observed 400 square degrees of sky to a depth of R 23.3, with a cadence optimized for the detection of KBOs. CFEPS uses this data to search for and track KBOs. We review the design of the Ecliptic Survey, demonstrating the need for the timing sequence used, and illustrate why a large FOV mosaic camera is required for 1-year recoveries to avoid orbital biases. Presently CFEPS is just over half completed; discovery operations have concluded, but objects must still be tracked to determine accurate orbits. The first data release (named L3) of objects discovered in 2003 has just occured, since these now have orbits with semimajor axes known to 0.1 percent accuracy. The L3 data release is composed 74 KBOs detected in 94 square degrees; 55 KBOs were tracked to 4 oppositions. Of the 55 objects tracked, 34 are classical belt objects, 17 are resonant, 2 are scattered disk members and 2 appear to be from the extended scattered disk. The driving goal of the CFEPS project is to provide a well-characterized survey of the Kuiper belt that does not suffer from a hidden 'tracking' bias and can therefore be used to test theoretical models of the Kuiper belt. The CFEPS team is providing a survey simulator that will allow modelers to directly compare their orbit distributions to that seen with CFEPS. We present limits on the intrinsic inclination distribution of the classical belt as an example. This work is based in part on data products produced at CFHT and the Canadian Astronomy Data Centre as part of the Canada-France-Hawaii Telescope Legacy Survey, a collaborative project of NRC and CNRS.

Jones, R. L.; Kavelaars, J.; Gladman, B.; Petit, J.; Parker, J.; Bieryla, A.

2006-12-01

254

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

255

This project was funded through the Illinois Department of Natural Resources and the Illinois State Geological Survey. Illinois State Water Survey Contract Report 2004-08.  

E-print Network

This project was funded through the Illinois Department of Natural Resources and the Illinois State Geological Survey. Illinois State Water Survey Contract Report 2004-08. Hydrologic Modeling of the Iroquois Science Section Illinois State Water Survey Abstract Watershed scale hydrologic simulation models HSPF

256

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

257

The Classical Kuiper Belt as seen from the Canada-France Ecliptic Plane Survey.  

NASA Astrophysics Data System (ADS)

The Canada-France Ecliptic Plane Survey [CFEPS] reports our discovery that the 'cold' classical-Kuiper belt is well described as an enhancement in the density of low-inclination, low-eccentricity objects in the 42 < a < 45 AU zone. The CFEPS 1st year results are inconsistent with a cold-belt extending to a > 45AU while the hot-belt component extends from 33 to at least 50AU. The cold-belt also appears to have an eccentricity distribution that is 'colder' than the eccentricity distribution of the hot-belt component. This enhanced low-e, low-i population may be the in situ remains of the primordial Kuiper belt. We will also report on the orbits of our first year detects [55 KBOs with classifiable orbits spread across 5 longitude regions] and detail our approach to constraining the likely orbit distributions with-in the Kuiper belt.

Kavelaars, J. J.; CFEPS Team

2007-10-01

258

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

259

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.

Hall, A. E., (Edited By); Scott, J.C.

1991-01-01

260

Mapping known and potential mineral occurrences and host rocks in the Bonnifield Mining District using minimal cloud- and snow-cover ASTER data: Chapter E in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project  

USGS Publications Warehouse

On July 8, 2003, the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) sensor acquired satellite imagery of a 60-kilometer-wide swath covering a portion of the Bonnifield mining district within the southernmost part of the Tintina Gold Province, Alaska, under unusually favorable conditions of minimal cloud and snow cover. Although rocks from more than eight different lithotectonic terranes are exposed within the extended swath of data, we focus on volcanogenic massive sulfides (VMS) and porphyry deposits within the Yukon-Tanana terrane (YTT), the largest Mesozoic accretionary terrane exposed between the Denali fault system to the south of Fairbanks and the Tintina fault system to the north of Fairbanks. Comparison of thermal-infrared region (TIR) decorrelation stretch data to available geologic maps indicates that rocks from the YTT contain a wide range of rock types ranging in composition from mafic metavolcanic rocks to felsic rock types such as metarhyolites, pelitic schists, and quartzites. The nine-band ASTER visible-near-infrared region--short-wave infrared region (VNIR-SWIR) reflectance data and spectral matched-filter processing were used to map hydrothermal alteration patterns associated with VMS and porphyry deposit types. In particular, smectite, kaolinite, opaline silica, jarosite and (or) other ferric iron minerals defined narrow (less than 250-meter diameter) zonal patterns around Red Mountain and other potential VMS targets. Using ASTER we identified some of the known mineral deposits in the region, as well as mineralogically similar targets that may represent potential undiscovered deposits. Some known deposits were not identified and may have been obscured by vegetation or snow cover or were too small to be resolved.

Hubbard, Bernard E.; Dusel-Bacon, Cynthia; Rowan, Lawrence C.; Eppinger, Robert G.

2007-01-01

261

Mineral surveys by the Geological Survey and the Bureau of Mines of Bureau of Land Management Wilderness Study Areas  

USGS Publications Warehouse

The Federal Land Policy and Management Act of 1976 instructed the Bureau of Land Management (BLM) to review all public lands under its jurisdiction and to determine their suitability or nonsuitability for wilderness designation. As part of this process, the Geological Survey and the Bureau of Mines conduct mineral surveys of areas for which a preliminary determination of wilderness suitability has been made. The BLM has completed its wilderness inventory phase and has found that 23.2 million acres deserve further study for wilderness consideration. These 23.2 million acres of wilderness study areas include 1 million acres of natural and primitive areas (Instant Study Areas), 5.7 million acres in the California Desert Conservation Area, and 16.5 million acres in other wilderness study areas. Mineral surveys on all areas recommended for wilderness will be completed by 1990.

Beikman, Helen M.; Hinkle, Margaret E.; Frieders, Twila; Marcus, Susan M.; Edward, James R.

1983-01-01

262

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

263

The U.S. Geological Survey Federal-State cooperative water- resources program; fiscal year 1987  

USGS Publications Warehouse

The U.S. Geological Survey 's Federal-State Cooperative Water Resources Program (50-50 matching of funds) started in Kansas in 1895. During fiscal year (FY) 1987, hydrologic data collection, investigations, and research are being conducted in every state, Puerto Rico, and several territories in cooperation with 940 state, regional and local agencies. Federal funding of $55.3 million was matched by cooperating agencies; cooperators also provided $4.6 million unmatched, for a program total of about $115 million. The Cooperative Program accounted for almost 45% of the FY 1987 obligations of the Geological Survey 's Water Resources Division. The principal areas of emphasis during the year included groundwater contamination, stream quality, water supply and demand, and hydrologic hazards. Information is presented on program functions and priorities. Data collection activities are also described as is work related to water resources contamination. Several examples of current (1987) investigations are provided. (Author 's abstract)

Gilbert, B.K.; Mann, William B., IV

1988-01-01

264

Survey of bottled drinking waters sold in Canada for chlorate, bromide, bromate, lead, cadmium and other trace elements  

Microsoft Academic Search

Mineral, spring and other bottled drinking waters sold in Canada in the winter of 1995–96 were surveyed for chlorate, bromide, bromate, Cr(VI), Li, B, Al, Mn, Cu, Zn, Sr, Ba, Be, V, Cr, Co, Ni, As, Se, Mo, Ag, Cd, Sb, Tl, Pb, Na, K, Ca and Mg. Chlorate and bromide were determined by ion chromatography (IC) with conductivity detection,

R. W. Dabeka; H. B. S. Conacher; J. F. Lawrence; W. H. Newsome; A. McKenzie; H. P. Wagner; R. K. H. Chadha; K. Pepper

2002-01-01

265

Are clinicians being prepared to care for abused women? A survey of health professional education in Ontario, Canada  

Microsoft Academic Search

BACKGROUND: The current project undertook a province-wide survey and environmental scan of educational opportunities available to future health care providers on the topic of intimate partner violence (IPV) against women. METHODS: A team of experts identified university and college programs in Ontario, Canada as potential providers of IPV education to students in health care professions at the undergraduate and post-graduate

C. Nadine Wathen; Masako Tanaka; Cristina Catallo; Adrianne C. Lebner; M. Kinneret Friedman; Mark D. Hanson; Clare Freeman; Susan M. Jack; Ellen Jamieson; Harriet L. MacMillan

2009-01-01

266

Public Perceptions of Child Care in Alberta, Canada: Evidence for Policies and Practice from a Cross-Sectional Survey  

ERIC Educational Resources Information Center

Research Findings: This study assessed public perceptions of child care and its providers in a Canadian province where government funding for child care includes subsidies and a voluntary accreditation process. In 2007-2008, 1,443 randomly selected adults in Alberta, Canada, completed a telephone survey. Individuals were eligible to participate if…

Tough, Suzanne; Rikhy, Shivani; Benzies, Karen; Vekved, Monica; Kehler, Heather; Johnston, David W.

2013-01-01

267

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

268

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

269

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

270

An index of geophysical well logging in Virginia by the U.S. Geological Survey  

USGS Publications Warehouse

Geophysical logs have been obtained in more than 170 wells in Virginia by the U.S. Geological Survey since 1968. These logs include natural gamma, electric, caliper, temperature, fluid conductivity, and fluid velocity. Most of the logs are for wells in the Coastal Plain Province of eastern Virginia. Geophysical logs aid in the interpretation of properties of earth materials, including the capacity to store and transmit water in the immediate vicinity of the well bore.

Mulheren, M. Patrick; Larson, J.D.; Hopkins, Herbert T.

1982-01-01

271

The Hydrologic Instrumentation Facility of the U.S. Geological Survey  

USGS Publications Warehouse

The U.S. Geological Survey Water Resources Division has improved support to the agencies field offices by the consolidation of all instrumentation support services in a single facility. This facility known as the Hydrologic Instrumentation Facility (HIF) is located at the National Space Technology Laboratory, Mississippi, about 50 miles east of New Orleans, Louisiana. The HIF is responsible for design and development, testing, evaluation, procurement, warehousing, distribution and repair of a variety of specialized hydrologic instrumentation. The centralization has resulted in more efficient and effective support of the Survey 's hydrologic programs. (USGS)

Wagner, C.R.; Jeffers, Sharon

1984-01-01

272

Application of reservoir geology of enhanced oil recovery from upper Devonian Nisku Reefs, Alberta, Canada  

SciTech Connect

The Upper Devonian West Pembina reef trend of west-central Alberta contains recoverable reserves of over 79 x 10[sup 6] m[sup 3] (500 million bbl) of oil and 1.4 x 10[sup 10] m[sup 3] (500 billion ft[sup 3]) of gas within approximately 50 pinnacle reefs in the Nisku Formation. Although the oil is saturated with gas at original reservoir pressure, primary depletion would soon lower the reservoir pressure below the bubble point, decreasing recovery. Thus, pressure maintenance is applied early in the producing life of the pools through waterflood or miscible flood schemes. Selection of the appropriate enhanced recovery scheme depends upon the internal flow-unit geometry of the reefs. The Bigoray Nisku C pool and the Pembina Nisku L pool form end members of the reservoir spectrum. They can be used as flow-unit models in the geological input for reservoir simulation studies. The Bigoray Nisku C pool is dominantly limestone. The primary textures, well perserved in this reef, provide the key to interpreting the relict textures in fully dolomitized reefs. Due to the presence of horizontal permeability barriers associated with the limestone lithology, the pool is developed with a waterflood displacement scheme. Ultimate recovery is estimated to be on the order of 0.55 x 10[sup 6] m[sup 3] (3.5 million bbl) or 46% or original oil in place (OOIP). The Pembina Nisku L pool is a completely dolomitized reef. In contrast to the Bigoray Nisku C pool, the complete dolomitization reduces the number of generic reservoir flow units observed in the L pool reef from six to three. Due to the excellent reservoir quality and absence of horizontal permeability barriers, it is being exploited by a vertical miscible flood. The Nisku L pool is one of the largest pinnacle reefs discovered in the Nisku reef fairway and contains an estimated 5 x 10[sup 6] m[sup 3] (31 million bbl) OOIP. Ultimate recovery is estimated to be approximately 4.1 x 10[sup 6] m[sup 3] (25.8 million bbl) or 82% of OOIP.

Watts, N.R. (AEC Oil and Gas Company, Calgary, Alberta (Canada)); Coppold, M.P. (Imperial Oil Resources Limited (Esso), Calgary, Alberta (Canada)); Douglas, J.L. (Saudi Aramco, Dhahran (Saudi Arabia))

1994-01-01

273

U.S. Geological Survey activities related to American Indians and Alaska Natives: fiscal years 2009 and 2010  

USGS Publications Warehouse

Although this report uses the term “resources,” the U.S. Geological Survey, through its interdisciplinary research, acknowledges the interconnectedness of the Earth and all the life forms that live upon it.

Fordham, Monique; Montour, Maria R.

2015-01-01

274

Topical index and bibliography of U.S. Geological Survey Trace Elements and related reports  

USGS Publications Warehouse

Part 1, the topical index, lists the titles of reports prepared from 1941 to December 1952, in conjunction with the Geological Survey's program of uranium and other elements of related interest. It includes not only completed Trace Elements reports and those now in preparation, but also Survey publications, publications by Survey personnel in scientific journals, and open-fie releases. The titles are grouped topically under the headings listed in the table of contents. Entries in each category are listed alphabetically, by author, and numbered consecutively. Many of the reports have been cross-indexed, where appropriate. The classification of the Trace Elements reports, insofar as it is known, has been indicated after the title of the report. The classification of some of the earlier Trace Elements reports is uncertain. The Geological Survey does not have additional copies of most of the reports listed, but copies of some of the completed reports can be loaned on request to organizations officially cooperating with the Atomic Energy Commission. Many Trace Elements reports have been made available to the public, either by open-file release, reproduction by Technical Information Service, Oak Ridge (referred to as TIS), by publication as a Geological Survey circular or bulletin or by a publication in a scientific journal. This information is given, following the title of the report. If the abstract of a Trace Element report has been published in Nuclear Science Abstracts, it is noted by the initials NSA following the title of the report. Part 2 is a reference guide to information on the Trace Elements program that is available to the public. This information is categorized according to the type of publication or release.

Curtis, Diane; Houser, Shirley S.

1952-01-01

275

Weak lensing mass map and peak statistics in Canada-France-Hawaii Telescope Stripe 82 survey  

NASA Astrophysics Data System (ADS)

We present a weak lensing mass map covering ˜124 deg2 of the Canada-France-Hawaii Telescope Stripe 82 Survey (CS82). We study the statistics of rare peaks in the map, including peak abundance, the peak-peak correlation functions and the tangential-shear profiles around peaks. We find that the abundance of peaks detected in CS82 is consistent with predictions from a ? cold dark matter cosmological model, once noise effects are properly included. The correlation functions of peaks with different signal-to-noise ratio (SNR) are well described by power laws, and there is a clear cross-correlation between the Sloan Digital Sky Survey III/Constant Mass galaxies and high SNR peaks. The tangential-shear profiles around peaks increase with peak SNR. We fit analytical models to the tangential-shear profiles, including a projected singular isothermal sphere (SIS) model and a projected Navarro, Frenk & White (NFW) model, plus a two-halo term. For the high SNR peaks, the SIS model is rejected at ˜3?. The NFW model plus a two-halo term gives more acceptable fits to the data. Some peaks match the positions of optically detected clusters, while others are relatively dark. Comparing dark and matched peaks, we find a difference in lensing signal of a factor of 2, suggesting that about half of the dark peaks are false detections.

Shan, Huan Yuan; Kneib, Jean-Paul; Comparat, Johan; Jullo, Eric; Charbonnier, Aldée; Erben, Thomas; Makler, Martin; Moraes, Bruno; Van Waerbeke, Ludovic; Courbin, Frédéric; Meylan, Georges; Tao, Charling; Taylor, James E.

2014-08-01

276

Bibliography of Oklahoma hydrology; reports prepared by the U.S. Geological Survey and principal cooperating agencies, 1901-93  

USGS Publications Warehouse

This bibliography lists reports on hydrology in Oklahoma prepared by the U.S. Geological Survey and the principal State cooperating agencies, the Oklahoma Geological Survey and the Oklahoma Water Resources Board. Included are citations of about 550 reports, abstracts, and journal articles issued from 1901 through July 1993. The reports are listed by agency and report type, and are indexed by author, subject, and USGS report number.

Havens, J. S., (compiler)

1993-01-01

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

Developing a geoscience knowledge framework for a national geological survey organisation  

NASA Astrophysics Data System (ADS)

Geological survey organisations (GSOs) are established by most nations to provide a geoscience knowledge base for effective decision-making on mitigating the impacts of natural hazards and global change, and on sustainable management of natural resources. The value of the knowledge base as a national asset is continually enhanced by the exchange of knowledge between GSOs as data and information providers and the stakeholder community as knowledge 'users and exploiters'. Geological maps and associated narrative texts typically form the core of national geoscience knowledge bases, but have some inherent limitations as methods of capturing and articulating knowledge. Much knowledge about the three-dimensional (3D) spatial interpretation and its derivation and uncertainty, and the wider contextual value of the knowledge, remains intangible in the minds of the mapping geologist in implicit and tacit form. To realise the value of these knowledge assets, the British Geological Survey (BGS) has established a workflow-based cyber-infrastructure to enhance its knowledge management and exchange capability. Future geoscience surveys in the BGS will contribute to a national, 3D digital knowledge base on UK geology, with the associated implicit and tacit information captured as metadata, qualitative assessments of uncertainty, and documented workflows and best practice. Knowledge-based decision-making at all levels of society requires both the accessibility and reliability of knowledge to be enhanced in the grid-based world. Establishment of collaborative cyber-infrastructures and ontologies for geoscience knowledge management and exchange will ensure that GSOs, as knowledge-based organisations, can make their contribution to this wider goal.

Howard, Andrew S.; Hatton, Bill; Reitsma, Femke; Lawrie, Ken I. G.

2009-04-01

279

(222)Rn activity in groundwater of the St. Lawrence Lowlands, Quebec, eastern Canada: relation with local geology and health hazard.  

PubMed

One hundred ninety-eight groundwater wells were sampled to measure the (222)Rn activity in the region between Montreal and Quebec City, eastern Canada. The aim of this study was to relate the spatial distribution of (222)Rn activity to the geology and the hydrogeology of the study area and to estimate the potential health risks associated with (222)Rn in the most populated area of the Province of Quebec. Most of the groundwater samples show low (222)Rn activities with a median value of 8.6 Bq/L. Ninety percent of samples show (222)Rn activity lower than 100 Bq/L, the exposure limit in groundwater recommended by the World Health Organization. A few higher (222)Rn activities (up to 310 Bq/L) have been measured in wells from the Appalachian Mountains and from the magmatic intrusion of Mont-Saint-Hilaire, known for its high level of indoor radon. The spatial distribution of (222)Rn activity seems to be related mainly to lithology differences between U-richer metasediments of the Appalachian Mountains and magmatic intrusions and the carbonaceous silty shales of the St. Lawrence Platform. Radon is slightly enriched in sodium-chlorine waters that evolved at contact with clay-rich formations. (226)Ra, the parent element of (222)Rn could be easily adsorbed on clays, creating a favorable environment for the production and release of (222)Rn into groundwater. The contribution of groundwater radon to indoor radon or by ingestion is minimal except for specific areas near Mont-Saint-Hilaire or in the Appalachian Mountains where this contribution could reach 45% of the total radioactive annual dose. PMID:24973780

Pinti, Daniele L; Retailleau, Sophie; Barnetche, Diogo; Moreira, Floriane; Moritz, Anja M; Larocque, Marie; Gélinas, Yves; Lefebvre, René; Hélie, Jean-François; Valadez, Arisai

2014-10-01

280

A Deep Geologic Repository for Low and Intermediate Level Radioactive Waste at the Bruce Nuclear Site, Ontario, Canada  

NASA Astrophysics Data System (ADS)

Ontario Power Generation (OPG) has initiated geoscientific investigations at the Bruce Nuclear site, situated on the eastern shore of Lake Huron 225 km north west of Toronto, Canada, to develop a Deep Geologic Repository (DGR) for Low and Intermediate Level Radioactive Waste (L&ILW). The DGR concept envisions the excavation of the repository within an Ordovician age argillaceous limestone formation overlain by thick shale sequences (200 m) at a depth of 660 m within a 830m Paleozoic sedimentary sequence of the Michigan Basin underlying the site. The geoscientific investigation, which will be conducted in a three-phase approach over five years, can be broadly classified into two elements; i) site-specific investigations and ii) Geosynthesis. These work programs combined are intent on exploring the geoscientific basis to understand geosphere stability at timeframes (1Ma) relevant to demonstrating the long-term performance of the DGR. A key aspect of the investigation is directed towards exploring the hydrodynamic and hydrogeochemical stability of the variably saline (>100 g/L) deep-seated (>400 m) Ordovician sediments that have been perturbed by 9 glacial events during the latter half of the Pleistocene. Numerical simulations of the regional scale groundwater domain (approximately 20,000 km2) and the sub-regional domain (approximately 440 km2) using a density dependent version of FRAC3DVS are providing a structured framework to combine multi-disciplinary geoscientific evidence to illustrate and test hypotheses of flow system evolution. Predictive results support a conclusion that the thick (400 m) Ordovician sediments, in which the DGR would be excavated, comprise a resilient and isolated deep-seated flow domain in which mass transport is diffusion dominated.

Jensen, M. R.; Sykes, E. A.; Sykes, J. F.; Sudicky, E. A.; Frape, S. K.; Semec, B. P.

2006-12-01

281

Employment prospects and trends for gastroenterology trainees in Canada: A nationwide survey  

PubMed Central

BACKGROUND: Many gastroenterology (GI) trainees face a variety of barriers to stable employment and are finding it increasingly difficult to secure employment in their chosen field. OBJECTIVE: To elucidate factors that contribute to the burden of unemployment and underemployment, and to examine solutions that may remedy this growing problem in the field of GI. METHODS: A nationwide survey of current, incoming and recently graduated individuals of GI training programs in Canada was conducted. Trainees in pediatric GI programs and those enrolled in sub-specialty programs within GI were also included. RESULTS: The response rate was 62%, with 93% of respondents enrolled in an adult GI training program. Many (73%) respondents planned to pursue further subspecialty training and the majority (53%) reported concerns regarding job security after graduation as contributory factors. Only 35% of respondents were confident that they would secure employment within six months of completing their training. Regarding barriers to employment, the most cited perceived reasons were lack of funding (both from hospitals and provincial governments) and senior physicians who continue to practice beyond retirement years. Sixty-nine per cent perceived a greater need for career guidance and 49% believed there were too many GI trainees relative to the current job market in their area. Most residents had a contingency plan if they remained unemployed >18 months, which often included moving to another province or to the United States. CONCLUSION: GI trainees throughout Canada reported substantial concerns about securing employment, citing national retirement trends and lack of funding as primary barriers to employment. Although these issues are not easily modifiable, certain problems should be targeted including optimizing training quotas, tailoring career guidance to the needs of the population, and emphasizing credentialing and quality control in endoscopy. PMID:24199210

Razik, Roshan; Cino, Maria; Nguyen, Geoffrey C

2013-01-01

282

The 2012 SAGE wait times program: Survey of Access to GastroEnterology in Canada  

PubMed Central

BACKGROUND: Periodically surveying wait times for specialist health services in Canada captures current data and enables comparisons with previous surveys to identify changes over time. METHODS: During one week in April 2012, Canadian gastroenterologists were asked to complete a questionnaire (online or by fax) recording demographics, reason for referral, and dates of referral and specialist visits for at least 10 consecutive new patients (five consultations and five procedures) who had not been seen previously for the same indication. Wait times were determined for 18 indications and compared with those from similar surveys conducted in 2008 and 2005. RESULTS: Data regarding adult patients were provided by 173 gastroenterologists for 1374 consultations, 540 procedures and 293 same-day consultations and procedures. Nationally, the median wait times were 92 days (95% CI 85 days to 100 days) from referral to consultation, 55 days (95% CI 50 days to 61 days) from consultation to procedure and 155 days (95% CI 142 days to 175 days) (total) from referral to procedure. Overall, wait times were longer in 2012 than in 2005 (P<0.05); the wait time to same-day consultation and procedure was shorter in 2012 than in 2008 (78 days versus 101 days; P<0.05), but continued to be longer than in 2005 (P<0.05). The total wait time remained longest for screening colonoscopy, increasing from 201 days in 2008 to 279 days in 2012 (P<0.05). DISCUSSION: Wait times for gastroenterology services continue to exceed recommended targets, remain unchanged since 2008 and exceed wait times reported in 2005. PMID:23472243

Leddin, Desmond; Armstrong, David; Borgaonkar, Mark; Bridges, Ronald J; Fallone, Carlo A; Telford, Jennifer J; Chen, Ying; Colacino, Palma; Sinclair, Paul

2013-01-01

283

Access routes to the United States Geological Survey's National Center, Reston, Virginia  

USGS Publications Warehouse

The National Center: The U.S. Geological Survey, established in 1879 as a bureau in the Department of the Interior, is one of the Federal Government's major earth science research and fact-finding agencies. By 1960, the continued growth of the Survey's natural resources and environmental programs and activities led to the agency's headquarters personnel being housed in more than 30 different buildings scattered throughout the Washington, D.C. metropolitan area. In 1962, Congress approved the construction of a National Center to consolidate the overall Survey's headquarters effort. A site in Reston's industrial/educational complex was selected and on July 15, 1971, ground was broken for the John Wesley Powell Federal Building.

U.S. Geological Survey

1977-01-01

284

White-nose syndrome in bats: U.S. Geological Survey updates  

USGS Publications Warehouse

White-nose syndrome (WNS) is a devastating disease that has killed millions of hibernating bats since it first appeared in New York in 2007 and has spread at an alarming rate from the northeastern to the central United States and Canada. The disease is named for the white fungus Geomyces destructans that infects the skin of the muzzle, ears, and wings of hibernating bats. The U.S. Geological Survey (USGS) National Wildlife Health Center (NWHC), the USGS Fort Collins Science Center, the U.S. Fish and Wildlife Service, and other partners continue to play a primary role in WNS research. Studies conducted at the NWHC led to the discovery (Blehert and others, 2009), characterization, and naming (Gargas and others, 2009) of the cold-loving fungus G. destructans and to the development of standardized criteria for diagnosing the disease (Meteyer and others, 2009). Additionally, scientists at the NWHC have pioneered laboratory techniques for studying the effects of the fungus on hibernating bats (Lorch and others, 2011). To determine if bats are affected by white-nose syndrome, scientists look for a characteristic microscopic pattern of skin erosion caused by G. destructans (Meteyer and others, 2009). Field signs of WNS can include visible white fungal growth on the bat's muzzle, wings, or both, but these signs alone are not a reliable disease indicator - laboratory examination and testing are required for disease confirmation. Infected bats also arouse from hibernation more frequently than uninfected bats (Warnecke and others, 2012) and often display abnormal behaviors in their hibernation sites, such as congregating at or near cave openings and daytime flights during winter. These abnormal behaviors may contribute to the bat's accelerated consumption of stored fat reserves, causing emaciation, a characteristic documented in some of the bats that die with WNS. During hibernation, bats likely have lowered immunity (Bouma and others, 2010), which may facilitate the ability of G. destructans to colonize and damage large areas of wing membrane (fig. 2). A current hypothesis suggests that erosion or ulceration of wing membrane caused by the fungus has the potential to alter the physiology of hibernating bats, resulting in fatal disruption of hydration, electrolyte balance, circulation, and thermoregulation (Cryan and others, 2010). Current estimates of bat population declines in the northeastern United States since the emergence of WNS are over 80 percent (Turner and others, 2011). This sudden and widespread mortality associated with WNS is unprecedented in hibernating bats, among which large-scale disease outbreaks have not been previously documented. It is unlikely that species of bats affected by WNS will recover quickly because most are long-lived and have only a single pup per year. Consequently, repopulation after widespread mortality of breeding adults will be a slow process. Worldwide, bats play essential roles as pollinators, seed dispersers, and as primary consumers of insects. The true ecological consequences of the recent large-scale reductions in populations of hibernating bats are not yet known. However, farmers might feel the impact. A recent economic analysis indicated that insect control services (ecosystem services) provided by bats to U.S. agriculture is valued between 4 to 50 billion dollars nationwide per year (Boyles and others, 2011). The number of North American bats estimated to have died from WNS thus far had the capacity to consume up to 8,000 tons of insects per year (Boyles and others, 2011). The area of North America affected by WNS continues to expand. Within the last 2 years, the disease has been confirmed in several Central States, including Alabama, Indiana, Kentucky, Ohio, Tennessee, and Missouri. High mortality of bats has not yet been reported at these locations, and it remains to be seen if WNS will develop and manifest in other States with the same severity as that in the Northeast.

Rogall, Gail Moede; Verant, Michelle

2012-01-01

285

Cooperative ground-water investigations in Massachusetts by the United States Geological Survey, 1938-50  

USGS Publications Warehouse

The United States Geological Survey in cooperation with the Massachusetts Department of Public Works in 1938 began an investigation of the ground-water conditions in Massachusetts. This work is part of a larger cooperative program that includes surface-water investigations, geologic studies, and topographic mapping. The purpose of the ground-water studies is to obtain detailed information concerning the occurrence and availability of ground water throughout the State. The information is used by the Highway Division of the Department of Public Works in connection with design, construction, and maintenance of highways. These studies also provided a basis for the more effective utilization of the ground-water resources of the State. They indicate where additional developments can be made safely or where present use may be excessive. Reports covering the ground-water studies are listed in the appendix.

Brashears, M.L., Jr.

1950-01-01

286

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

287

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.

Jennifer Bergman

2009-08-03

288

SGA, the Geological Survey of Sweden and the Nordic mining industry invite you to the 12th SGA Biennial Meeting  

E-print Network

SGA, the Geological Survey of Sweden and the Nordic mining industry invite you to the 12th SGA August 2013, Uppsala, Sweden Second circular #12;2 Contents Invitation 3 Venue 4 Committees 5 Scientific Survey of Sweden and the local organizing committee are proud to announce the 12th SGA Biennial Meeting

Flener, Pierre

289

Geological, geochemical, and geophysical survey of the geothermal resources at Hot Springs Bay Valley, Akutan Island, Alaska  

SciTech Connect

An extensive survey was conducted of the geothermal resource potential of Hot Springs Bay Valley on Akutan Island. A topographic base map was constructed, geologic mapping, geophysical and geochemical surveys were conducted, and the thermal waters and fumarolic gases were analyzed for major and minor element species and stable isotope composition. (ACR)

Motyka, R.J.; Wescott, E.M.; Turner, D.L.; Swanson, S.E.; Romick, J.D.; Moorman, M.A.; Poreda, R.J.; Witte, W.; Petzinger, B.; Allely, R.D.

1985-01-01

290

FAINT TIDAL FEATURES IN GALAXIES WITHIN THE CANADA-FRANCE-HAWAII TELESCOPE LEGACY SURVEY WIDE FIELDS  

SciTech Connect

We present an analysis of the detectability of faint tidal features in galaxies from the wide-field component of the Canada-France-Hawaii Telescope Legacy Survey. Our sample consists of 1781 luminous (M{sub r{sup '}}<-19.3 mag) galaxies in the magnitude range 15.5 mag < r' < 17 mag and in the redshift range 0.04 < z < 0.2. Although we have classified tidal features according to their morphology (e.g., streams, shells, and tails), we do not attempt to interpret them in terms of their physical origin (e.g., major versus minor merger debris). Instead, we provide a catalog that is intended to provide raw material for future investigations which will probe the nature of low surface brightness substructure around galaxies. We find that around 12% of the galaxies in our sample show clear tidal features at the highest confidence level. This fraction rises to about 18% if we include systems with convincing, albeit weaker tidal features, and to 26% if we include systems with more marginal features that may or may not be tidal in origin. These proportions are a strong function of rest-frame color and of stellar mass. Linear features, shells, and fans are much more likely to occur in massive galaxies with stellar masses >10{sup 10.5} M {sub Sun }, and red galaxies are twice as likely to show tidal features than are blue galaxies.

Atkinson, Adam M.; Abraham, Roberto G. [Department of Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, ON M5S 3H4 (Canada)] [Department of Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, ON M5S 3H4 (Canada); Ferguson, Annette M. N. [Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom)] [Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom)

2013-03-01

291

United States Geological Survey: International Polar Year Resources (title provided or enhanced by cataloger)  

NSDL National Science Digital Library

This resource provides a brief overview of the upcoming International Polar Year (IPY) and United States Geological Survey (USGS) initiatives and resources that help support the observance. Topics include a history of IPY (this will be the third IPY) and the role of the USGS in polar research. The education section provides links to USGS resources on glaciation, the North and South Pole, Alaska, climate change, and other topics of interest for IPY investigations. Materials include information on atlases and databases, polar research projects, maps, photos, digital datasets, booklets, and educational guides.

292

Participation in Performance-Evaluation Studies by U.S. Geological Survey National Water Quality Laboratory  

USGS Publications Warehouse

Performance-evaluation studies provide customers of the U.S. Geological Survey National Water Quality Laboratory (NWQL) with data needed to evaluate performance and to compare of select laboratories for analytical work. The NWQL participates in national and international performance-evaluation (PE) studies that consist of samples of water, sediment, and aquatic biological materials for the analysis of inorganic constituents, organic compounds, and radionuclides. This Fact Sheet provides a summary of PE study results from January 1993 through April 1997. It should be of particular interest to USGS customers and potential customers of the NWQL, water-quality specialists, cooperators, and agencies of the Federal Government.

Glodt, Stephen R.; Pirkey, Kimberly D.

1998-01-01

293

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

294

U.S. Geological Survey Groundwater Modeling Software: Making Sense of a Complex Natural Resource  

USGS Publications Warehouse

Computer models of groundwater systems simulate the flow of groundwater, including water levels, and the transport of chemical constituents and thermal energy. Groundwater models afford hydrologists a framework on which to organize their knowledge and understanding of groundwater systems, and they provide insights water-resources managers need to plan effectively for future water demands. Building on decades of experience, the U.S. Geological Survey (USGS) continues to lead in the development and application of computer software that allows groundwater models to address scientific and management questions of increasing complexity.

Provost, Alden M.; Reilly, Thomas E.; Harbaugh, Arlen W.; Pollock, David W.

2009-01-01

295

U.S. Geological Survey's Alert Notification System for Volcanic Activity  

USGS Publications Warehouse

The United States and its territories have about 170 volcanoes that have been active during the past 10,000 years, and most could erupt again in the future. In the past 500 years, 80 U.S. volcanoes have erupted one or more times. About 50 of these recently active volcanoes are monitored, although not all to the same degree. Through its five volcano observatories, the U.S. Geological Survey (USGS) issues information and warnings to the public about volcanic activity. For clarity of warnings during volcanic crises, the USGS has now standardized the alert-notification system used at its observatories.

Gardner, Cynthia A.; Guffanti, Marianne C.

2006-01-01

296

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

297

Access routes to the U.S. Geological Survey's EROS Data Center, Sioux Falls, South Dakota  

USGS Publications Warehouse

The EROS Data Center is a part of the Earth Resources Observation Systems (EROS) Program of the Department of the Interior, managed by the U.S. Geological Survey. It is the national center for the processing anddissemination of spacecraft and aircraft acquired photographic imagery and electronic data of the Earth's resources. The center also trains and assists users in the application of such data. The EROS Data Center provides access to Landsat data, aerial photography acquired by the U.S. Department of the Interior, and photography and other remotely sensed data acquired by the National Aeronautics and Space Administration (NASA) from research aircraft and from Skylab, Apollo, and Gemini spacecraft.

U.S. Geological Survey

1976-01-01

298

U.S. Geological Survey toxic Waste-Groundwater Contamination Program, fiscal year 1985  

USGS Publications Warehouse

In fiscal year 1982, the U S Geological Survey began an interdisciplinary research thrust entitled Toxic Waste-Groundwater Contamination Program The objective of the thrust was to provide earth sciences information necessary to evaluate and mitigate existing groundwater contamination problems resulting from the planned or inadvertant disposal of wastes and from certain land-use practices, and to improve future waste disposal and land-use practices The program supports process-oriented and interdisciplinary field research, and regional groundwater quality studies This article provides an overview of the current (Fiscal Year 1985) activities of the Toxic Waste Program ?? 1986 Springer-Verlag New York Inc.

Ragone, S.E.

1986-01-01

299

Uranium resource assessment by the Geological Survey; methodology and plan to update the national resource base  

USGS Publications Warehouse

Based on the Memorandum of Understanding {MOU) of September 20, 1984, between the U.S. Geological Survey of the U.S. Department of Interior and the Energy Information Administration {EIA) of the U.S. Department of Energy {DOE), the U.S. Geological Survey began to make estimates of the undiscovered uranium endowment of selected areas of the United States in 1985. A modified NURE {National Uranium Resource Evaluation) method will be used in place of the standard NURE method of the DOE that was used for the national assessment reported in October 1980. The modified method, here named the 'deposit-size-frequency' {DSF) method, is presented for the first time, and calculations by the two methods are compared using an illustrative example based on preliminary estimates for the first area to be evaluated under the MOU. The results demonstrate that the estimate of the endowment using the DSF method is significantly larger and more uncertain than the estimate obtained by the NURE method. We believe that the DSF method produces a more realistic estimate because the principal factor estimated in the endowment equation is disaggregated into more parts and is more closely tied to specific geologic knowledge than by the NURE method. The DSF method consists of modifying the standard NURE estimation equation, U=AxFxTxG, by replacing the factors FxT by a single factor that represents the tonnage for the total number of deposits in all size classes. Use of the DSF method requires that the size frequency of deposits in a known or control area has been established and that the relation of the size-frequency distribution of deposits to probable controlling geologic factors has been determined. Using these relations, the principal scientist {PS) first estimates the number and range of size classes and then, for each size class, estimates the lower limit, most likely value, and upper limit of the numbers of deposits in the favorable area. Once these probable estimates have been refined by elicitation of the PS, they are entered into the DSF equation, and the probability distribution of estimates of undiscovered uranium endowment is calculated using a slight modification of the program by Ford and McLaren (1980). The EIA study of the viability of the domestic uranium industry requires an annual appraisal of the U.S. uranium resource situation. During DOE's NURE Program, which was terminated in 1983, a thorough assessment of the Nation's resources was completed. A comprehensive reevaluation of uranium resource base for the entire United States is not possible for each annual appraisal. A few areas are in need of future study, however, because of new developments in either scientific knowledge, industry exploration, or both. Four geologic environments have been selected for study by the U.S. Geological Survey in the next several years: (1) surficial uranium deposits throughout the conterminous United States, (2) uranium in collapse-breccia pipes in the Grand Canyon region of Arizona, (3) uranium in Tertiary sedimentary rocks of the Northern Great Plains, and (4) uranium in metamorphic rocks of the Piedmont province in the eastern States. In addition to participation in the National uranium resource assessment, the U.S. Geological Survey will take part in activities of the Nuclear Energy Agency of the Organization for Economic Cooperation and Development and those of the International Atomic Energy Agency.

Finch, Warren Irvin; McCammon, Richard B.

1987-01-01

300

Access to Care, Health Status, and Health Disparities in the United States and Canada: Results of a Cross-National Population-Based Survey  

Microsoft Academic Search

Objectives. We compared health status, access to care, and utilization of med- ical services in the United States and Canada, and compared disparities accord- ing to race, income, and immigrant status. Methods. We analyzed population-based data on 3505 Canadian and 5183 US adults from the Joint Canada\\/US Survey of Health. Controlling for gender, age, income, race, and immigrant status, we

Karen E. Lasser; David U. Himmelstein; Steffie Woolhandler

2006-01-01

301

The Canada-France-Hawaii Telescope Legacy Survey: The Morphology-Density Relation of Galaxies out to z ~ 1  

Microsoft Academic Search

We study the relationships between galaxy total luminosity (Mg'), morphology, color, and environment as a function of redshift. We use a magnitude-limited sample of 65,624 galaxies in the redshift range 0Canada-France-Hawaii Telescope Legacy Survey Deep Fields. We parameterize galaxy morphology according to the Sérsic index n, taking n>2 to be ``bulge-dominated'' and n2

Martijn J. H. M. Nuijten; Luc Simard; Stephen Gwyn; Huub J. A. Röttgering

2005-01-01

302

Activities of the U.S. Geological Survey Water-Resources Division in North Carolina, 1986  

USGS Publications Warehouse

Water resources programs conducted by the U.S. Geological Survey in the state of North Carolina during 1985 and proposed programs for 1986 are described. This is the first in a series of biennial progress reports on Survey activities in the state. Activities such as gathering, interpreting and publishing hydrologic data and scientific information in support of state and local water resources planning, management, and regulatory programs are presented. The water resources programs described are funded through cooperative agreements with state and local agencies and through special agreements with other federal agencies. Cooperative programs are reviewed annually to insure that state, local and national priorities are being met. Groundwater withdrawals are estimated to have produced water level declines of 150 ft and more for large areas of the northeast and central Coastal Plain. Future demands for water quality and quantity are discussed.

Turner, J. F., (compiler); Deckard, R.J.

1986-01-01

303

Lessons learned from the U.S. Geological Survey abandoned mine lands initiative: 1997-2002  

USGS Publications Warehouse

Growth of the United States has been facilitated, in part, by hard-rock mining in the Rocky Mountains. Abandoned and inactive mines cause many significant environmental concerns in hundreds of watersheds. Those who have responsibility to address these environmental concerns must have a basic level of scientific information about mining and mine wastes in a watershed prior to initiating remediation activities. To demonstrate what information is needed and how to obtain that information, the U.S. Geological Survey implemented the Abandoned Mine Lands (AML) Initiative from 1997 to 2002 with demonstration studies in the Boulder River watershed in Montana and the Animas River watershed in Colorado. The AML Initiative included collection and analysis of geologic, hydrologic, geochemical, geophysical, and biological data. The synergy of this interdisciplinary analysis produced a perspective of the environmental concerns that could not have come from a single discipline. Two examples of these perspectives include (1) the combination of hydrological tracer techniques, structural geology, and geophysics help to understand the spatial distribution of loading to the streams in a way that cannot be evaluated by monitoring at a catchment outlet, and (2) the combination of toxicology and hydrology combine to illustrate that seasonal variability of toxicity conditions occurs. Lessons have been learned by listening to and collaborating with land-management agencies to understand their needs and by applying interdisciplinary methods to answer their questions.

Kimball, Briant A.; Church, Stanley E.; Besser, John M.

2006-01-01

304

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

305

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

306

For permission to copy, contact editing@geosociety.org 2004 Geological Society of America 251  

E-print Network

, Michigan 49224, USA Gregg F. Gunnell§ Museum of Paleontology, University of Michigan, 1109 Geddes Avenue, Ann Arbor, Michigan 48109, USA John-Paul Zonneveld# Geological Survey of Canada, 3303 33rd St. NW, Calgary, Alberta T2L 2A7, Canada Keywords: Eocene, Green River Basin, biostratigraphy, geochronology

Singer, Bradley S.

307

Aadland, R.K., and E.H. Bennett. 1979. Geologic Map of the Sandpoint Quadrangle, Idaho and Washington: Idaho Geological Survey, 1:250,000 Scale, 1 Plate.  

E-print Network

503 Aadland, R.K., and E.H. Bennett. 1979. Geologic Map of the Sandpoint Quadrangle, Idaho and Washington: Idaho Geological Survey, 1:250,000 Scale, 1 Plate. Abbot, A. H. and Duvenack. 1939. 1934. Roadside Geology of Idaho: Mountain Press Publishing, Missoula, MT, 393 pp. Anders, P. and D. Richards

308

User's guide for U.S. Geological Survey rainfall-runoff models; revised 1977  

USGS Publications Warehouse

Modified versions of the rainfall-runoff model described by Dawdy, Lichty, and Bergmann (1972) (see W72-11754) are used in the U.S. Geological Survey as a means of synthesizing flood discharges for small drainage areas. Synthesized flood discharges derived through use of long-term (60-70 year) rainfall and evaporation data, provide a more representative time base than do short-term (5-15 year) discharge records obtained by conventional stream gaging techniques. The rainfall, discharge, and evaporation data for use with rainfall-runoff models are stored in the Unit and Daily Values Files. Any of these data which were collected during the current or immediately preceding water year are stored on direct access, online disk files. Older data are stored in sequential files on magnetic tapes. Both the disks and tapes contain short-term data collected by the U.S. Geological Survey for calibration of models and long-term data for use in synthesis of long-term flood records. Information in this report provides guidelines for the assembly, storage, and retrieval of data needed to use these models, and also provides description and documentation of computer programs for model calibration and flood-record synthesis. (See also W74-11234) (Woodard-USGS)

Carrigan, Philip Hadley, Jr.; Bower, David E.; Dempster, G.R.

1977-01-01

309

Geological and geophysical survey of a building site: the "European Coast  

NASA Astrophysics Data System (ADS)

Geological and geophysical surveys are an essential aspect to determine irregularities in the bedrock surface caused by tectonic faults and active weathering process. Such kind of investigation is particularly important when dealing with the design of foundations for living block infrastructures. In the particular case presented in this work, the bedrock is covered by sediments that form quite a flat surface, thus requiring some kind of sub-surface study. The solely use of drilling in this situation can not be enough for civil engineering purposes. Also, the option to drill at a denser grid would increase the price drastically. On the other hand, an insufficient sampling grid is prone to the risk of missing potentially dangerous anomalies. In addition to that, the urban environment makes the choice of geophysical techniques difficult. In order to obtain a continuous picture of the cross-section, the 3D electric resistivity tomography (ERT) was chosen. Geomorphology of the site is quite typical for the Ob river floodplain. The Paleozoic bedrock is covered by Paleogene alluvial sediments; modern alluvial, biogene and artificial sediments are on the top. As a result of the survey, the geological elements of the cross-section, such as bedrock and sediments were determined. The combined use of geophysical techniques, together with drilling, in-situ testing and laboratory analysis have drastically decreased the time and costs of the exploration work, improving its quality and informational content, thus providing essential information for the design of the infrastructure.

Manstein, Y. A.; Lavrov, S. N.; Scozzari, A.

2012-04-01

310

Operation of hydrologic data collection stations by the U.S. Geological Survey in 1985  

USGS Publications Warehouse

The U.S. Geological Survey (USGS) operated hydrologic data collection stations during fiscal yr 1985 in response to the needs of all levels of Government for hydrologic information. Surface water discharge was determined at 11,076 stations; stage data on streams, reservoirs, and lakes were recorded at 2,141 stations; and surface water quality was determined at 4,166 stations. Groundwater levels were measured at 39,301 stations, and the quality of groundwater was determined at 9,263 stations nationwide. Data on sediment were collected daily at 212 stations and on a periodic basis at 1,027 stations. Information on precipitation quantity was collected at 921 stations, and the quality of precipitation was analyzed at 108 stations. Data collection platforms for satellite telemetry of hydrologic information were used at 1,520 USGS stations. Funding support for the hydrologic stations was derived either solely or from a combination of three major sources--the Geological Survey 's Federal Program appropriation, the Federal-State Cooperative Program, and reimbursements from other Federal agencies. (Author 's abstract)

Condes de la Torre, Alberto

1985-01-01

311

U.S. Geological Survey: A synopsis of Three-dimensional Modeling  

USGS Publications Warehouse

The U.S. Geological Survey (USGS) is a multidisciplinary agency that provides assessments of natural resources (geological, hydrological, biological), the disturbances that affect those resources, and the disturbances that affect the built environment, natural landscapes, and human society. Until now, USGS map products have been generated and distributed primarily as 2-D maps, occasionally providing cross sections or overlays, but rarely allowing the ability to characterize and understand 3-D systems, how they change over time (4-D), and how they interact. And yet, technological advances in monitoring natural resources and the environment, the ever-increasing diversity of information needed for holistic assessments, and the intrinsic 3-D/4-D nature of the information obtained increases our need to generate, verify, analyze, interpret, confirm, store, and distribute its scientific information and products using 3-D/4-D visualization, analysis, modeling tools, and information frameworks. Today, USGS scientists use 3-D/4-D tools to (1) visualize and interpret geological information, (2) verify the data, and (3) verify their interpretations and models. 3-D/4-D visualization can be a powerful quality control tool in the analysis of large, multidimensional data sets. USGS scientists use 3-D/4-D technology for 3-D surface (i.e., 2.5-D) visualization as well as for 3-D volumetric analyses. Examples of geological mapping in 3-D include characterization of the subsurface for resource assessments, such as aquifer characterization in the central United States, and for input into process models, such as seismic hazards in the western United States.

Jacobsen, Linda J.; Glynn, Pierre D.; Phelps, Geoff A.; Orndorff, Randall C.; Bawden, Gerald W.; Grauch, V.J.S.

2011-01-01

312

Renal colic and urolithiasis practice patterns in Canada: a survey of Canadian Urological Association members  

PubMed Central

Background: We describe the practice variability of CUA (Canadian Urological Association) members and factors which predict these patterns for common stone scenarios. Methods: We asked 308 English- and 52 French-speaking CUA members to complete online surveys in their respective languages. We collected demographic information on fellowship training, shock wave lithotripsy (SWL) access, academic setting and whether they are at a hospital with regionalized surgical services. Respondents indicated their actual as well as ideal treatment for scenarios of renal, proximal and distal ureteric calculi. Results: In total, 131 urologists responded (36% response rate), all of whom treated urolithiasis. Of this number, 17% had endourology fellowship training, 76% had access to SWL, 42% were at an academic institution and 66% were at institutions with regionalized surgical services. Actual and ideal treatment modalities selected for symptomatic, distal and proximal ureteric stones (4, 8, 14 mm) were consistent with published guidelines. There were discrepancies between the use of ureteroscopy and SWL in actual versus ideal scenarios. Actual and ideal practices were congruent for proximal ureteric stones and asymptomatic renal calculi. In multivariate analysis, respondents were less likely to perform ureteroscopy on proximal 4- and 8-mm stones if they were at a hospital with regionalized surgical services (OR: 0.097; 95% CI: 0.01–0.76, p = 0.03 and OR: 0.330; 95% CI: 0.13–0.83, p = 0.02). Interpretation: There is clinical variability in the management of urolithiasis in Canada; however, management approaches fall within published guidelines. Type of hospital and access to operating room resources may affect treatment modality selection. PMID:22031612

Satkunasivam, Raj; Keays, Melise; Pace, Kenneth T.

2011-01-01

313

Promoting cessation resources through cigarette package warning labels: a longitudinal survey with adult smokers in Canada, Australia and Mexico  

PubMed Central

Introduction Health warning labels (HWLs) on tobacco packaging can be used to provide smoking cessation information, but the impact of this information is not well understood. Methods Online consumer panels of adult smokers from Canada, Australia and Mexico were surveyed in September 2012, January 2013 and May 2013; replenishment was used to maintain sample sizes of 1000 participants in each country at each wave. Country-stratified logistic Generalised Estimating Equation (GEE) models were estimated to assess correlates of citing HWLs as a source of information on quitlines and cessation websites. GEE models also regressed having called the quitline, and having visited a cessation website, on awareness of these resources because of HWLs. Results At baseline, citing HWLs as a source of information about quitlines was highest in Canada, followed by Australia and Mexico (33%, 19% and 16%, respectively). Significant increases over time were only evident in Australia and Mexico. In all countries, citing HWLs as a source of quitline information was significantly associated with self-report of having called a quitline. At baseline, citing HWLs as a source of information about cessation websites was higher in Canada than in Australia (14% and 6%, respectively; Mexico was excluded because HWLs do not include website information), but no significant changes over time were found for either country. Citing HWLs as a source of information about cessation websites was significantly associated with having visited a website in both Canada and Australia. Conclusions HWLs are an important source of cessation information. PMID:25052860

Thrasher, James F; Osman, Amira; Moodie, Crawford; Hammond, David; Bansal-Travers, Maansi; Cummings, K Michael; Borland, Ron; Yong, Hua-Hie; Hardin, James

2015-01-01

314

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

315

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

316

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

317

Hydrogeology of the observation well site at the United States Geological Survey National Center, Reston, Virginia  

USGS Publications Warehouse

The U.S. Geological Survey 's National Center is on a 105-acre tract straddling rocks of two distinct types. These are pelitic schists of late Precambrian or early Paleozoic age; and sandstone, shale, siltstone, conglomerate, and diabase of Triassic age. Two observation wells and two core holes were drilled on the part of the property underlain by Triassic sedimentary rocks. The wells were drilled to monitor water levels, for equipment testing and to determine the hydraulic properties of the Triassic rocks. Geophysical logs were run and lithologic logs prepared from drill cuttings and cores. An aquifer test was conducted and indicated that the transmissivity is about 40 sq ft/day. Flowmeter surveys showed that the water comes from two thin zones, presumably bedding plane partings. The flowmeter surveys, core samples, and geophysical logs suggest that the Triassic sandstone is a fractured-rock aquifer. A water sample taken at the close of the aquifer test was low in dissolved solids, soft, and of excellent quality. (Woodard-USGS)

Larson, J.D.

1978-01-01

318

Application of statistical approaches to analyze geological, geotechnical and hydrogeological data at a fractured-rock mine site in Northern Canada  

NASA Astrophysics Data System (ADS)

Mine site characterization often results in the acquisition of geological, geotechnical and hydrogeological data sets that are used in the mine design process but are rarely co-evaluated. For a study site in northern Canada, bivariate and multivariate (hierarchical) statistical techniques are used to evaluate empirical hydraulic conductivity estimation methods based on traditional rock mass characterisation schemes, as well as to assess the regional hydrogeological conceptual model. Bivariate techniques demonstrate that standard geotechnical measures of fracturing are poor indicators of the hydraulic potential of a rock mass at the study site. Additionally, rock-mass-permeability schemes which rely on these measures are shown to be poor predictors of hydraulic conductivity in untested areas. Multivariate techniques employing hierarchical cluster analysis of both geotechnical and geological data sets are able to identify general trends in the data. Specifically, the geological cluster analysis demonstrated spatial relationship between intrusive contacts and increased hydraulic conductivity. This suggests promise in the use of clustering methods in identifying new trends during the early stages of hydrogeological characterization.

Mayer, J. M.; Allen, D. M.; Gibson, H. D.; Mackie, D. C.

2014-05-01

319

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

320

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

321

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

322

Sudbury project (University of Muenster-Ontario Geological Survey): Petrology, chemistry, and origin of breccia formations  

NASA Technical Reports Server (NTRS)

Within the Sudbury Project of the University of Muenster and the Ontario Geological Survey special emphasis was put on the breccia formations exposed at the Sudbury structure (SS) because of their crucial role for the impact hypothesis. They were mapped and sampled in selected areas of the north, east, and south ranges of the SS. The relative stratigraphic positions of these units are summarized. Selected samples were analyzed by optical microscopy, SEM, microprobe, XRF and INAA, Rb-Sr and SM-Nd-isotope geochemistry, and carbon isotope analysis. The results of petrographic and chemical analysis for those stratigraphic units that were considered the main structural elements of a large impact basin are summarized.

Stoeffler, D.; Deutsch, A.; Avermann, M.; Brockmeyer, P.; Lakomy, R.; Mueller-Mohr, V.

1992-01-01

323

Availability of Earth observations data from the U.S. Geological Survey's EROS data center  

USGS Publications Warehouse

For decades federal and state agencies have been collecting regional, continental, and global Earth observations data acquired by satellites, aircraft, and other information-gathering systems. These data include photographic and digital remotely sensed images of the Earth's surface, as well as earth science, cartographic, and geographic data. Since 1973, the U.S. Geological Survey's Earth Resources Observation Systems (EROS) Data Center (EDC) in Sioux Falls, South Dakota, has been a data management, production, dissemination, and research center for these data. Currently, the Data Center holds over 10 million satellite images and aerial photographs, in photographic and digital formats. Users are able to place inquiries and orders for these holdings via a nationwide computer network. In addition to cataloging the data stored in its archives, the Data Center provides users with rapid access to information on many data collections held by other facilities.

Holm, Thomas M.; Draeger, William C.; Risty, Ronald R.

1993-01-01

324

U.S. Geological Survey Standard Reference Sample Project: Performance Evaluation of Analytical Laboratories  

USGS Publications Warehouse

Since 1962, the U.S. Geological Survey (USGS) has operated the Standard Reference Sample Project to evaluate the performance of USGS, cooperator, and contractor analytical laboratories that analyze chemical constituents of environmental samples. The laboratories are evaluated by using performance evaluation samples, called Standard Reference Samples (SRSs). SRSs are submitted to laboratories semi-annually for round-robin laboratory performance comparison purposes. Currently, approximately 100 laboratories are evaluated for their analytical performance on six SRSs for inorganic and nutrient constituents. As part of the SRS Project, a surplus of homogeneous, stable SRSs is maintained for purchase by USGS offices and participating laboratories for use in continuing quality-assurance and quality-control activities. Statistical evaluation of the laboratories results provides information to compare the analytical performance of the laboratories and to determine possible analytical deficiences and problems. SRS results also provide information on the bias and variability of different analytical methods used in the SRS analyses.

Long, H. Keith; Daddow, Richard L.; Farrar, Jerry W.

1998-01-01

325

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

326

Energy and Minerals Science at the U.S. Geological Survey  

USGS Publications Warehouse

The economy, national security, and standard of living of the United States depend on adequate and reliable supplies of energy and mineral resources. Based on population and consumption trends, the Nation’s and World’s use of energy and minerals is expected to grow, driving the demand for scientific understanding of resource formation, location, and availability. The importance of environmental stewardship and human health in sustainable growth emphasizes the need for a broader understanding of energy and mineral resources. The U.S. Geological Survey (USGS) is a world leader in conducting research needed to address these challenges and to provide a scientific foundation for policy and decisionmaking with respect to resource use, sustainability, environmental protection, and an adaptive resource management approach.

Ferrero, Richard C.; Kolak, Jonathan J.; Bills, Donald J.; Bowen, Zachary H.; Cordier, Daniel J.; Gallegos, Tanya J.; Hein, James R.; Kelley, Karen D.; Nelson, Philip H.; Nuccio, Vito F.; Schmidt, Jeanine M.; Seal, Robert R., II

2013-01-01

327

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

328

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

329

U.S. Geological Survey programs and investigations related to soil and water conservation  

USGS Publications Warehouse

The U.S. Geological Survey has a rich tradition of collecting hydrologic data, especially for fluxes of water and suspended sediment, that provide a foundation for studies of soil and water conservation. Applied and basic research has included investigations of the effects of land use on rangelands, croplands, and forests; hazards mapping; derivation of flood and drought frequency, and other statistics related to streamflow and reservoir storage; development and application of models of rainfall-runoff relations, chemical quality, and sediment movement; and studies of the interactive processes of overland and channel flow with vegetation. Networks of streamgaging stations and (or) sampling sites within numerous drainage basins are yielding information that extends databases and enhances the ability to use those data for interpretive studies.

Osterkamp, W.R.; Gray, J.R.

2001-01-01

330

McNutt Outlines Priorities for the U.S. Geological Survey  

NASA Astrophysics Data System (ADS)

For Marcia McNutt, the new director of the U.S. Geological Survey (USGS) and science advisor to the secretary of the interior, the clock is ticking. “Everyone feels that we have perhaps 3 years in which a very ambitious agenda needs to be accomplished,” McNutt told Eos in a recent exclusive interview. “We want to make sure by the end of [U.S. President Obama's] first term we have got significant accomplishments on issues such as climate change, environment, and energy, and other things that are important to the president.” “Everything is on a fast track to move quickly,” she said. “Everything had to be done yesterday, if not last week.” While the political process often requires immediate scientific information, the scientific process can take a bit longer, McNutt said, noting that it is fortunate research at the USGS has persisted in many areas.

Showstack, Randy

2010-01-01

331

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

332

Proposed Budget for U.S. Geological Survey: A Mixed Bag of Increases and Cuts  

NASA Astrophysics Data System (ADS)

Under the Obama administration's proposed fiscal year (FY) 2012 budget, the U.S. Geological Survey (USGS) would receive $1.1 billion, a scant $6.1 million more than the 2010 enacted budget. Within the agency, which is part of the Department of the Interior (DOI), some key initiatives slated for new or increased funding include the National Land Imaging Program, the USGS portion of the America's Great Outdoors Initiative, and DOI Climate Science Centers. However, the request also includes $89.1 million in program reductions and the elimination of some programs. With Congress currently considering a budget continuing resolution to fund the federal government through the end of the current fiscal year, 2011, USGS faces possible additional cuts.

Showstack, Randy

2011-03-01

333

U.S. Geological Survey budget would increase but includes targeted cuts to some key programs  

NASA Astrophysics Data System (ADS)

The Obama administration's proposed budget for the U.S. Geological Survey (USGS) for fiscal year (FY) 2013 is $1.1 billion, $34.5 million (3.2%) above the Agency's 2012 enacted level. The budget includes $73.2 million in targeted increases but also has $49.5 million in proposed reductions, including cuts to some water and minerals programs and other areas. Funding for the budget was prioritized to maintain programs that are legislatively mandated, that are important for protecting lives and human property, and that are among the Obama administration's key emphases. These include research and development, which the administration believes will help end the economic recession, USGS director Marcia McNutt said at a 14 February briefing.

Showstack, Randy

2012-03-01

334

Proposed U.S. Geological Survey Budget Would Provide "Significant" Increase  

NASA Astrophysics Data System (ADS)

The White House's proposed budget for the U.S. Geological Survey (USGS) for fiscal year (FY) 2014, which the administration submitted to Congress on 10 April, would provide the agency with 1.17 billion, an increase of 98.02 million, 9.17% more than the FY 2012 enacted budget of $1.07 billion (see Table 1). The proposed budget is a "significant" increase and "makes a statement about the USGS's relevance in the federal research community," USGS acting director Suzette Kimball said at the agency's briefing. Because Congress approved the FY 2013 budget just a few weeks prior to the release of the Obama administration's proposal, the FY 2014 budget is compared with the FY 2012 enacted budget here.

Showstack, Randy

2013-04-01

335

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.

U.S. Geological Survey

1993-01-01

336

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

337

AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications of the U.S. Geological Survey, along with prices of the last offerings, are given in the current-  

E-print Network

AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications given below. BY MAIL Books Professional Papers, Bulletins, Water-Supply Papers, Tech- niques of Water Box 25286, Federal Center, Denver, CO 80225 OVER THE COUNTER Books and Maps Books and maps of the U

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

Discrimination in Canada: A Survey of Knowledge, Attitudes and Practices Concerned with Discrimination.  

ERIC Educational Resources Information Center

To identify attitudes of the Canadian public toward discrimination, the Canadian Human Rights Commission surveyed a representative sample of 2,000 Canadians. This document describes the survey, presents highlights, and explains how the survey is being used. The specific purpose of the survey was to provide information on public opinion regarding…

Canadian Human Rights Commission, Ottawa (Ontario). Research and Special Studies Branch.

340

The Canada-France Ecliptic Plane Survey—L3 Data Release: The Orbital Structure of the Kuiper Belt  

NASA Astrophysics Data System (ADS)

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(Hg < 10) = 50 ± 5 × 103 and find that the hot component of the main classical belt represents ~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 Hg < 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(Hg < 10)~ 25+25 -12 × 103compared to our estimate of the size of main classical Kuiper Belt population of N(Hg < 10) ~ (126+50 -46) × 103. 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 Institute National des Sciences de l'Universe 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 the Canadian Astronomy Data Centre as part of the Canada-France-Hawaii Telescope Legacy Survey, a collaborative project of NRC and CNRS.

Kavelaars, J. J.; Jones, R. L.; Gladman, B. J.; Petit, J.-M.; Parker, Joel Wm.; Van Laerhoven, C.; Nicholson, P.; Rousselot, P.; Scholl, H.; Mousis, O.; Marsden, B.; Benavidez, P.; Bieryla, A.; Campo Bagatin, A.; Doressoundiram, A.; Margot, J. L.; Murray, I.; Veillet, C.

2009-06-01

341

INTRODUCTION Each chapter of the 2010 edition of the U.S. Geological Survey (USGS) Mineral Commodity Summaries (MCS)  

E-print Network

3 INTRODUCTION Each chapter of the 2010 edition of the U.S. Geological Survey (USGS) Mineral Commodity Summaries (MCS) includes information on events, trends, and issues for each mineral commodity comprehensive source of 2009 mineral production data for the world. More than 90 individual minerals

Torgersen, Christian

342

Celebrating 125 Years of the U.S. Geological Survey U.S. Department of the Interior  

E-print Network

-888-ASK-USGS World Wide Web: http://www.usgs.gov/ Any use of trade, product, or firm names world. Message from the Director In the 125 years since its creation, the U.S. Geological Survey (USGS..................................................................................................................................................................... 1 A Proud History of Service

Torgersen, Christian

343

A history of the Water Resources Division, U.S. Geological Survey: vol. VIII 1979-94  

USGS Publications Warehouse

The mission of the Water Resources Division (WAD) of the U.S. Geological Survey (USGS) is to provide the hydrologic information and understanding needed for the optimum use and management of the Nation·s water resources for the overall benefit of the people of the United States.

Blakey, James F.; Biesecker, James E.; Feltz, Herman R.; Kantrowitz, Irwin H.; Yong, Loren E.; and others

2005-01-01

344

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

E-print Network

Impacts to Coastal Beaches and BarriersU.S. Department of the Interior U.S. Geological Survey Fact assessments of the potential impacts of past and future storms on coastal beaches and barriers, access. · Coastal topography and bathymetry · Impacts to coastal beaches and barriers · Impacts of storm surge

Fleskes, Joe

345

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

346

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

347

Supporting data for the U.S. Geological Survey 2012 world assessment of undiscovered oil and gas resources  

USGS Publications Warehouse

This report provides information pertaining to the 2012 U.S. Geological Survey assessment of undiscovered, technically recoverable conventional oil and gas resources of the world, exclusive of the United States. Some of the results were previously published, mostly in USGS fact sheet series.

World Conventional Resources Assessment Team, USGS

2013-01-01

348

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

349

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

350

Geological disaster survey based on Curvelet transform with borehole Ground Penetrating Radar in Tonglushan old mine site  

Microsoft Academic Search

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

Xinjian Tang; Tao Sun; Zhijie Tang; Zenghui Zhou; Baoming Wei

2011-01-01

351

A Review of Methods Applied by the U.S. Geological Survey in the Assessment of Identified  

E-print Network

.......................... 18 Figure 2. Utilization efficiency as a function of temperature for existing geothermal power plants Geothermal Resources By Colin F. Williams, Marshall J. Reed, and Robert H. Mariner Open-File Report 2008 applied by the U.S. Geological Survey in the assessment of identified geothermal resources: U

352

The Global Seismographic Network The U.S. Geological Survey's National Earthquake Information Center reports on more than  

E-print Network

of the devastating 2010 Haiti earthquake. The GSN also plays a major role in the operations of the National OceanicThe Global Seismographic Network The U.S. Geological Survey's National Earthquake Information Center reports on more than 30,000 earthquakes a year worldwide, automatically detecting, locating

Torgersen, Christian

353

Hydrologic Instrumentation Facility of the U.S. Geological Survey, annual report for fiscal year 1993  

USGS Publications Warehouse

The Hydrologic lnstrumentation Facility (HIF) of the U.S. Geological Survey (USGS) has nationwide responsibility for all aspects of hydrologic field instrumentation in support of Survey data-collection programs. Each year the HIF publishes a report to inform Water Resources Division (WRD) personnel of progress made by the HIF in fulfilling its mission to improve instrumentation services to the Division. The report for fiscal year 1993 (FY93) describes the activities of the HIF, including major accomplish- ments for the year; personnel actions; active projects (reported by section--Technical Services Section, Administrative Services Section, Field Coordination, Applications and Development Section, Test and Evaluation Section, Field Service and Supply Section); and planned activities for the coming year. Also presented in the appendixes are detailed listings of the memberships of the Instrumentation Committee and the Instrumentation Technical Advisory Subcommittee; district, sub- district, and field office visits by HIF personnel; professional and technical meetings attended by HIF personnel; vendor visits; and reports prepared by HIF personnel.

Latkovich, V.J.; Tracey, Debra C.

1994-01-01

354

Multidisciplinary approach (geology, geomorphology, geomechanics, geomatics) for the characterization of the Blais Creek DsGSD (Monashee Mountains, BC, Canada)  

NASA Astrophysics Data System (ADS)

Field investigations, including detailed geological and geomorphological mapping have been coupled with stratigraphic and structural studies of the Blais Creek Deep-seated Gravitational Slope Deformations (DsGSD), Monashee Mountains, British Columbia (BC). To reconstruct the DsGSD evolutionary stages and to evaluate its controlling factors, a complex methodology has been applied, integrating orthophotos, stereo models and 3D models of the DsGSD with field and literature data concerning tectonic and glacial history of the Seymour Valley. General geomechanical properties of the deforming rock mass has been then evaluated for using in numerical models of the failure mechanism at Blais Creek and to define a broad geomechanical characterization of different portions of the DsGSD. The combination between the aerial and terrestrial photogrammetry was appropriate in terms of the quality of the information obtained more than the quantitative information. Several Ground Control Points (GCPs) and Tie Points (TPs) were selected from the original DEM received by the BC Government. The use of a multitemporal aerial triangulation gave the possibility to minimize the error relative to every single block of images. Couples of oriented photos were used to create stereoscopic models. Multitemporal variations of the Blais Creek slope were observed and compared to the actual situation of the slope. The use of terrestrial photogrammetry through Adamtech software confirmed some of the qualitative data obtained from aerial interpretation and from field survey. The limited use of terrestrial photogrammetry was due to the impossibility of orienting the 3D terrestrial models. Anyway these models were also useful to confirm one of the possible mechanisms used to describe the evolution of Blais Creek. Geomechanical analysis was performed through field work and laboratory tests to characterize the entire slope and to produce some of the values useful for a possible numerical analysis of Blais Creek. It showed interesting differences in geomechanical properties between the calc-silicate and quartzite/gneiss. The kinematic analysis showed very the different instability areas along the slope, even if variations in landforms and rock masses volume weren't widespread along Blais Creek slope during the time span covered by aerial photographs (1973-2007). Indeed, the multitemporal analysis outlined very active instability along the large upper trench and the lateral active slopes of Blais Creek. Even without significant level of risks in the area, considering the remote area involved in this instability, some relevant hazards could occur, related to the possible collapse of SE side of Blais Creek DsGSD. Regarding the long term evolution of the DsGSD, the extensive network of linear features at Blais Creek is of a large deforming rock mass. Movement probably began with the retreat of valley glaciers during deglaciation when the oversteepened valley sides were debuttressed. By these evidences it is possible to theorize that the post-glacial retreat of the rock face and removal of the ice buttress from both the Seymour and the Blais Creeek Valleys lowered the factor of stability of the mass as a whole, allowing a deep-seated shear surface to develop gradually over time by progressive creep.

Moretti, Danilo; Giardino, Marco; Stead, Doug; Clague, John; Gibson, Dan; Ghirotti, Monica; Perotti, Luigi

2013-04-01

355

Age at menarche in Canada: results from the National Longitudinal Survey of Children & Youth  

Microsoft Academic Search

BACKGROUND: Given the downward trend in age at menarche and its implications for the reproductive health and wellbeing of women, little is known about menarcheal age in Canada. Most Canadian studies are only representative of specific populations. The present study, therefore, aims to assess the distribution of age at menarche for Canadian girls and explore its variation across socio-economic and

Ban Al-Sahab; Chris I Ardern; Mazen J Hamadeh; Hala Tamim

2010-01-01

356

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

357

Limitations Influencing Interventional Radiology in Canada: Results of a National Survey by the Canadian Interventional Radiology Association (CIRA)  

SciTech Connect

Purpose. To describe the current state and limitations to interventional radiology (IR) in Canada through a large, national survey of Canadian interventional radiologists. Methods. An anonymous online survey was offered to members of the Canadian Interventional Radiology Association (CIRA). Only staff radiologists were invited to participate. Results. Seventy-five (75) responses were received from a total of 247, giving a response rate of 30%. Respondents were split approximately equally between academic centers (47%) and community practice (53%), and the majority of interventional radiologists worked in hospitals with either 200-500 (49%) or 500-1,000 (39%) beds. Procedures listed by respondents as most commonly performed in their practice included PICC line insertion (83%), angiography and stenting (65%), and percutaneous biopsy (37%). Procedures listed as not currently performed but which interventional radiologists believed would benefit their patient population included radiofrequency ablation (36%), carotid stenting (34%), and aortic stenting (21%); the majority of respondents noted that a lack of support from referring services was the main reason for not performing these procedures (56%). Impediments to increasing scope and volume of practice in Canadian IR were most commonly related to room or equipment shortage (35%), radiologist shortage (33%), and a lack of funding or administrative support (28%). Conclusion. Interventional radiology in Canada is limited by a number of factors including funding, manpower, and referral support. A concerted effort should be undertaken by individual interventional radiologists and IR organizations to increase training capacity, funding, remuneration, and public exposure to IR in order to help advance the subspecialty.

O'Brien, Jeremy [University of Western Ontario, Schulich School of Medicine (Canada); Baerlocher, Mark Otto [University of Toronto, Radiology Residency Program (Canada)], E-mail: mark.baerlocher@utoronto.ca; Asch, Murray R. [Lakeridge Health Corporation (Canada); Hayeems, Eran; Kachura, John R. [Mount Sinai Hospital, University of Toronto, University Health Network (Canada); Collingwood, Peter [Memorial University of Newfoundland (Canada)

2007-09-15

358

Geologic survey in the south-central region of Mato Grosso  

NASA Technical Reports Server (NTRS)

The field observations made in the Cuiaba Project area are described. Many geologic cross-sections were done in which the stratigraphic units and the geologic structures defined in the literature and observed in the LANDSAT MSS imagery were recognized.

Parada, N. D. J. (principal investigator); Balieiro, M. G.

1983-01-01

359

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

360

Archive of U.S. Geological Survey selected single-beam bathymetry datasets, 1969-2000  

USGS Publications Warehouse

New national programs, as well as natural and man-made disasters, have raised awareness about the need to find new and improved ways to share information about the coastal and marine environment with a wide-ranging public audience. The U.S. Geological Survey (USGS) Coastal and Marine Geology Program (CMGP) has begun a large-scale effort to incorporate the program's published, digital geophysical data into a single point of access known as the Coastal and Marine Geoscience Data System (CMGDS) (http://cmgds.marine.usgs.gov/). To aid in data discovery, work is also being done to import CMGP data into highly visible data and information resources, such as the National Oceanic and Atmospheric Administration's (NOAA) National Geophysical Data Center (NGDC) and two widely used Earth-science tools, GeoMapApp (GMA) (http://www.geomapapp.org) and Virtual Ocean (VO) (http://www.virtualocean.org/). This task of the CMGP Integrated Data Management System project will help support information exchange with partners, regional planning groups, and the public, as well as facilitate integrated spatial-data analysis. Sharing USGS-CMGP geophysical data via CMGDS, NGDC, GMA, and VO will aid data discovery and enable the data to support new purposes beyond those for which the data were originally intended. In order to make data available to NGDC, and from there into GMA and VO, the data must be reformatted into a standard exchange format and published. In 1977, a group of geophysical data managers from the public and private sectors developed the MGD77 format as the standard exchange format for geophysical data. In 2010, a tab-delimited version of the format was added as MGD77T (Hittelman and others, 1977). The MGD77T geophysical data format can include bathymetry, magnetics, gravity, and seismic navigation data. It is used for the transmission of data between marine institutions, data centers, and can be used by various software programs as an exchange format. A header (documentation) file and data file are created for each survey (Hittelman and others, 1977). More details about the MGD77T format are available at http://www.ngdc.noaa.gov/mgg/dat/geodas/docs/mgd77.pdf (74MB PDF). This archive describes the detailed steps used to convert single-beam bathymetry and navigation files into the MGD77T format (Hittelman and others, 1977) for submission to NGDC and formal Federal Geographic Data Committee (FGDC) (http://www.fgdc.gov/metadata) metadata as a publication of these single-beam bathymetry datasets.

Schreppel, Heather A.; Degnan, Carolyn H.; Dadisman, Shawn V.; Metzger, Dan R.

2013-01-01

361

Are clinicians being prepared to care for abused women? A survey of health professional education in Ontario, Canada  

PubMed Central

Background The current project undertook a province-wide survey and environmental scan of educational opportunities available to future health care providers on the topic of intimate partner violence (IPV) against women. Methods A team of experts identified university and college programs in Ontario, Canada as potential providers of IPV education to students in health care professions at the undergraduate and post-graduate levels. A telephone survey with contacts representing these programs was conducted between October 2005 and March 2006. The survey asked whether IPV-specific education was provided to learners, and if so, how and by whom. Results In total, 222 eligible programs in dentistry, medicine, nursing and other allied health professions were surveyed, and 95% (212/222) of programs responded. Of these, 57% reported offering some form of IPV-specific education, with undergraduate nursing (83%) and allied health (82%) programs having the highest rates. Fewer than half of undergraduate medical (43%) and dentistry (46%) programs offered IPV content. Postgraduate programs ranged from no IPV content provision (dentistry) to 41% offering content (nursing). Conclusion Significant variability exists across program areas regarding the methods for IPV education, its delivery and evaluation. The results of this project highlight that expectations for an active and consistent response by health care professionals to women experiencing the effects of violence may not match the realities of professional preparation. PMID:19575776

Wathen, C Nadine; Tanaka, Masako; Catallo, Cristina; Lebner, Adrianne C; Friedman, M Kinneret; Hanson, Mark D; Freeman, Clare; Jack, Susan M; Jamieson, Ellen; MacMillan, Harriet L

2009-01-01

362

Public Perceptions of Climate Change as a Human Health Risk: Surveys of the United States, Canada and Malta  

PubMed Central

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.

2010-01-01

363

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

364

Geological and seismological survey for new design-basis earthquake ground motion of Kashiwazaki-Kariwa NPS  

NASA Astrophysics Data System (ADS)

At about 10:13 on July 16, 2007, a strong earthquake named 'Niigata-ken Chuetsu-oki Earthquake' of Mj6.8 on Japan Meteorological Agencyfs scale occurred offshore Niigata prefecture in Japan. However, all of the nuclear reactors at Kashiwazaki-Kariwa Nuclear Power Station (KKNPS) in Niigata prefecture operated by Tokyo Electric Power Company shut down safely. In other words, automatic safety function composed of shutdown, cooling and containment worked as designed immediately after the earthquake. During the earthquake, the peak acceleration of the ground motion exceeded the design-basis ground motion (DBGM), but the force due to the earthquake applied to safety-significant facilities was about the same as or less than the design basis taken into account as static seismic force. In order to assess anew the safety of nuclear power plants, we have evaluated a new DBGM after conducting geomorphological, geological, geophysical, seismological survey and analyses. [Geomorphological, Geological and Geophysical survey] In the land area, aerial photograph interpretation was performed at least within the 30km radius to extract geographies that could possibly be tectonic reliefs as a geomorphological survey. After that, geological reconnaissance was conducted to confirm whether the extracted landforms are tectonic reliefs or not. Especially we carefully investigated Nagaoka Plain Western Boundary Fault Zone (NPWBFZ), which consists of Kakuda-Yahiko fault, Kihinomiya fault and Katakai fault, because NPWBFZ is the one of the active faults which have potential of Mj8 class in Japan. In addition to the geological survey, seismic reflection prospecting of approximate 120km in total length was completed to evaluate the geological structure of the faults and to assess the consecutiveness of the component faults of NPWBFZ. As a result of geomorphological, geological and geophysical surveys, we evaluated that the three component faults of NPWBFZ are independent to each other from the viewpoint of geological structure, however we have decided to take into consideration simultaneous movement of the three faults which is 91km long in seismic design as a case of uncertainty. In the sea area, we conducted seismic reflection prospecting with sonic wave in the area stretching for about 140km along the coastline and 50km in the direction of perpendicular to the coastline. When we analyze the seismic profiles, we evaluated the activities of faults and foldings carefully on the basis of the way of thinking of 'fault-related-fault' because the sedimentary layers in the offing of Niigata prefecture are very thick and the geological structures are characterized by foldings. As a result of the seismic reflection survey and analyses, we assess that five active faults (foldings) to be taken into consideration to seismic design in the sea area and we evaluated that the F-B fault of 36km will have the largest impact on the KKNPS. [Seismological survey] As a result of analyses of the geological survey, data from NCOE and data from 2004 Chuetsu Earthquake, it became clear that there are factors that intensifies seismic motions in this area. For each of the two selected earthquake sources, namely NPWBFZ and F-B fault, we calculated seismic ground motions on the free surface of the base stratum as the design-basis ground motion (DBGM) Ss, using both empirical and numerical ground motion evaluation method. PGA value of DBGM is 2,300Gal for unit 1 to 4 located in the southern part of the KKNPS and 1,050Gal for unit 5 to 7 in the northern part of the site.

Takao, M.; Mizutani, H.

2009-05-01

365

Data from selected U.S. Geological Survey national stream water quality monitoring networks  

USGS Publications Warehouse

A nationally consistent and well-documented collection of water quality and quantity data compiled during the past 30 years for streams and rivers in the United States is now available on CD-ROM and accessible over the World Wide Web. The data include measurements from two U.S. Geological Survey (USGS) national networks for 122 physical, chemical, and biological properties of water collected at 680 monitoring stations from 1962 to 1995, quality assurance information that describes the sample collection agencies, laboratories, analytical methods, and estimates of laboratory measurement error (bias and variance), and information on selected cultural and natural characteristics of the station watersheds. The data are easily accessed via user-supplied software including Web browser, spreadsheet, and word processor, or may be queried and printed according to user-specified criteria using the supplied retrieval software on CD-ROM. The water quality data serve a variety of scientific uses including research and educational applications related to trend detection, flux estimation, investigations of the effects of the natural environment and cultural sources on water quality, and the development of statistical methods for designing efficient monitoring networks and interpreting water resources data.

Alexander, R.B.; Slack, J.R.; Ludtke, A.S.; Fitzgerald, K.K.; Schertz, T.L.

1998-01-01

366

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

367

Programs and analytical methods for the US Geological Survey acid rain quality-assurance project  

SciTech Connect

The US Geological Survey operates four programs to provide external quality-assurance of wet deposition monitoring by the National Atmospheric Deposition Program and the National Trends Network. An intersite-comparison program assesses the precision and bias of onsite determinations of pH and specific conductance made by site operators. A blind-audit program is used to assess the effect of routine sample-handling procedures and transportation on the precision and bias of wet-deposition data. An interlaboratory comparison program is used to assess analytical results from three or more laboratories, which routinely analyze wet-deposition samples from the major North American networks, to determine if comparability exists between laboratory analytical results and to provide estimates of the analytical precision of each laboratory. A collocated sampler program is used to estimate the precision of wet/dry precipitation sampling throughout the National Atmospheric deposition Program and the Nation Trends Network to assess the variability of varying spatial arrays and to evaluate the impact of violations of specific site criteria. This report documents the procedures and analytical methods used in these four quality-assurance programs.

See, R.B.; Willoughby, T.C.; Brooks, M.H.; Gordon, J.D. (Geological Survey, Denver, CO (United States))

1990-01-01

368

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

369

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

370

Cost effectiveness of the US Geological Survey stream-gaging program in Alabama  

USGS Publications Warehouse

A study of the cost effectiveness of the stream gaging program in Alabama identified data uses and funding sources for 72 surface water stations (including dam stations, slope stations, and continuous-velocity stations) operated by the U.S. Geological Survey in Alabama with a budget of $393,600. Of these , 58 gaging stations were used in all phases of the analysis at a funding level of $328,380. For the current policy of operation of the 58-station program, the average standard error of estimation of instantaneous discharge is 29.3%. This overall level of accuracy can be maintained with a budget of $319,800 by optimizing routes and implementing some policy changes. The maximum budget considered in the analysis was $361,200, which gave an average standard error of estimation of 20.6%. The minimum budget considered was $299,360, with an average standard error of estimation of 36.5%. The study indicates that a major source of error in the stream gaging records is lost or missing data that are the result of streamside equipment failure. If perfect equipment were available, the standard error in estimating instantaneous discharge under the current program and budget could be reduced to 18.6%. This can also be interpreted to mean that the streamflow data records have a standard error of this magnitude during times when the equipment is operating properly. (Author 's abstract)

Jeffcoat, H.H.

1987-01-01

371

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

372

Applications of the U.S. Geological survey's global land cover product  

USGS Publications Warehouse

The U.S. Geological Survey (USGS), in partnership with several international agencies and universities, has produced a global land cover characteristics database. The land cover data were created using multitemporal analysis of advanced very high resolution radiometer satellite images in conjunction with other existing geographic data. A translation table permits the conversion of the land cover classes into several conventional land cover schemes that are used by ecosystem modelers, climate modelers, land management agencies, and other user groups. The alternative classification schemes include Global Ecosystems, the Biosphere Atmosphere Transfer Scheme, the Simple Biosphere, the USGS Anderson Level 2, and the International Geosphere Biosphere Programme. The distribution system for these data is through the World Wide Web ( the web site address is: http://edcwww.cr.usgs.gov/landdaac/glcc/glcc.html) or by magnetic media upon special request. The availability of the data over the World Wide Web, in conjunction with the flexible database structure, allows easy data access to a wide range of users. The web site contains a user registration form that allows analysis of the diverse applications of large-area land cover data. Currently, applications are divided among mapping (20 percent), conservation (30 percent), and modeling (35 percent).

Reed, B.

1997-01-01

373

U.S. Geological Survey community for data integration: data upload, registry, and access tool  

USGS Publications Warehouse

As a leading science and information agency and in fulfillment of its mission to provide reliable scientific information to describe and understand the Earth, the U.S. Geological Survey (USGS) ensures that all scientific data are effectively hosted, adequately described, and appropriately accessible to scientists, collaborators, and the general public. To succeed in this task, the USGS established the Community for Data Integration (CDI) to address data and information management issues affecting the proficiency of earth science research. Through the CDI, the USGS is providing data and metadata management tools, cyber infrastructure, collaboration tools, and training in support of scientists and technology specialists throughout the project life cycle. One of the significant tools recently created to contribute to this mission is the Uploader tool. This tool allows scientists with limited data management resources to address many of the key aspects of the data life cycle: the ability to protect, preserve, publish and share data. By implementing this application inside ScienceBase, scientists also can take advantage of other collaboration capabilities provided by the ScienceBase platform.

Fort Collins Science Center Web Applications Team

2012-01-01

374

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

375

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

376

The oilspill risk analysis model of the U. S. Geological Survey  

USGS Publications Warehouse

The U.S. Geological Survey has developed an oilspill risk analysis model to aid in estimating the environmental hazards of developing oil resources in Outer Continental Shelf (OCS) lease areas. The large, computerized model analyzes the probability of spill occurrence, as well as the likely paths or trajectories of spills in relation to the locations of recreational and biological resources which may be vulnerable. The analytical methodology can easily incorporate estimates of weathering rates , slick dispersion, and possible mitigating effects of cleanup. The probability of spill occurrence is estimated from information on the anticipated level of oil production and method and route of transport. Spill movement is modeled in Monte Carlo fashion with a sample of 500 spills per season, each transported by monthly surface current vectors and wind velocities sampled from 3-hour wind transition matrices. Transition matrices are based on historic wind records grouped in 41 wind velocity classes, and are constructed seasonally for up to six wind stations. Locations and monthly vulnerabilities of up to 31 categories of environmental resources are digitized within an 800,000 square kilometer study area. Model output includes tables of conditional impact probabilities (that is, the probability of hitting a target, given that a spill has occurred), as well as probability distributions for oilspills occurring and contacting environmental resources within preselected vulnerability time horizons. (USGS)

Smith, R.A.; Slack, J.R.; Wyant, T.; Lanfear, K.J.

1980-01-01

377

The oilspill risk analysis model of the U. S. Geological Survey  

USGS Publications Warehouse

The U.S. Geological Survey has developed an oilspill risk analysis model to aid in estimating the environmental hazards of developing oil resources in Outer Continental Shelf (OCS) lease areas. The large, computerized model analyzes the probability of spill occurrence, as well as the likely paths or trajectories of spills in relation to the locations of recreational and biological resources which may be vulnerable. The analytical methodology can easily incorporate estimates of weathering rates , slick dispersion, and possible mitigating effects of cleanup. The probability of spill occurrence is estimated from information on the anticipated level of oil production and method of route of transport. Spill movement is modeled in Monte Carlo fashion with a sample of 500 spills per season, each transported by monthly surface current vectors and wind velocities sampled from 3-hour wind transition matrices. Transition matrices are based on historic wind records grouped in 41 wind velocity classes, and are constructed seasonally for up to six wind stations. Locations and monthly vulnerabilities of up to 31 categories of environmental resources are digitized within an 800,000 square kilometer study area. Model output includes tables of conditional impact probabilities (that is, the probability of hitting a target, given that a spill has occured), as well as probability distributions for oilspills occurring and contacting environmental resources within preselected vulnerability time horizons. (USGS)

Smith, R.A.; Slack, J.R.; Wyant, Timothy; Lanfear, K.J.

1982-01-01

378

Neutron-activation analysis of several US Geological Survey and National Bureau of Standards reference materials  

SciTech Connect

In this work, several US Geological Survey (U.S.G.S.) and National Bureau of Standards (N.B.S.) reference samples have been analyzed in an effort to improve the quality of elemental concentration data available on these materials, so they can be used in a program of verification of factor analysis source resolution procedures. The analyses of these samples were performed by instrumental neutron activation analysis (INAA). The samples analyzed were: U.S.G.S. Green River Shale, N.B.S. 45b Homogeneous River Sediment, U.S.G.S. Analyzed Peridotite N.B.S. 1579 Powdered Lead-based Paint, U.S.G.S. Hawaian Basalt U.S.G.S. Marine Mud, U.S.G.S. Analyzed Cody Shale U.S.G.S. Glass Mountain Rhyolite, N.B.S. Argillaceous Limestone No. 1, and a sample of Spex ultrapure graphite. Neutron activation analysis was employed because of the high sensitivity that can be attained in determining elemental concentrations. Although INAA is a relatively simple method and the reproducibility of the data is good, the method shows some inaccuracies. The basic theory and technique are reviewed in an attempt to show where problems can arise and how they can be dealt with.

Daly, A.T.

1981-01-01

379

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

380

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

381

U.S. Geological Survey Mentoring Program - Paired for a Powerful Science Future  

USGS Publications Warehouse

The U.S. Geological Survey (USGS) prides itself in its excellence in science. The resource bank of skills and knowledge that is contained within the current employees of the USGS is what makes our science excellent. With an aging workforce, we must ensure that the knowledge and skills represented by those years of experience are passed to new employees. To ensure that this bank of knowledge and experience is not lost and thereby sustain the excellence of our science, the Mentoring Program focuses on intentional mentoring, the deliberate transfer of skills and knowledge. Skills transfer from more experienced employees to those who are less experienced is critical. By placing an emphasis on intentional mentoring, we help to meet the scientific and technical needs of the employees by offering a cost-effective way to gain knowledge and skills necessary to maintain excellence in science. By encouraging and fostering a mentoring atmosphere within the USGS, we are investing in the future of our organization. With improved technical skills, increased job effectiveness, and resulting satisfaction, USGS employees will not only be more invested and engaged, they will also be able to work smarter, thus benefiting from the experience of their mentor.

Miller, K.F.; Clarke, S.D.

2007-01-01

382

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

383

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

384

Standard for the U.S. Geological Survey Historical Topographic Map Collection  

USGS Publications Warehouse

This document defines the digital map product of the U.S. Geological Survey (USGS) Historical Topographic Map Collection (HTMC). The HTMC is a digital archive of about 190,000 printed topographic quadrangle maps published by the USGS from the inception of the topographic mapping program in 1884 until the last paper topographic map using lithographic printing technology was published in 2006. The HTMC provides a comprehensive digital repository of all scales and all editions of USGS printed topographic maps that is easily discovered, browsed, and downloaded by the public at no cost. Each printed topographic map is scanned “as is” and captures the content and condition of each map. The HTMC provides ready access to maps that are no longer available for distribution in print. A new generation of topographic maps called “US Topo” was defined in 2009. US Topo maps, though modeled on the legacy 7.5-minute topographic maps, conform to different standards. For more information on the HTMC, see the project Web site at: http://nationalmap.gov/historical/.

Allord, Gregory J.; Fishburn, Kristin A.; Walter, Jennifer L.

2014-01-01

385

Documentation of the U.S. Geological Survey Oceanographic Time-Series Measurement Database  

USGS Publications Warehouse

The U.S. Geological Survey (USGS) Oceanographic Time-Series Measurements Database contains oceanographic observations made as part of studies designed to increase understanding of sediment transport processes and associated dynamics. Analysis of these data has contributed to more accurate prediction of the movement and fate of sediments and other suspended materials in the coastal ocean. The measurements were collected by investigators at the USGS Woods Hole Science Center (WHSC) and colleagues, beginning in 1975. Most of the field experiments were carried out on the U.S. continental shelf and slope. This report describes the instrumentation and platforms used to make the measurements; the methods used to process, apply quality-control criteria, and archive the data; and the data storage format. The report also includes instructions on how to access the data from the on-line database at http://stellwagen.er.usgs.gov/. As of 2008, the database contains about 4,250 files which may include observations of current velocity, ocean temperature, conductivity, pressure, and light transmission at one or more depths over some duration of time.

Montgomery, Ellyn T.; Martini, Marinna A.; Lightsom, Frances L.; Butman, Bradford

2008-01-01

386

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

387

Summary of the U. S. Geological Survey National Water Quality Assessment Program  

SciTech Connect

Beginning in 1986, the Congress appropriated funds for the US 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 the 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 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.

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

1988-01-01

388

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

389

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, Michael H.; Kohout, F.A.; Manheim, F. T.; Schloam, R.; Miller, R.E.; Schultz, D.M.

1976-01-01

390

Modernization and multiscale databases at the U.S. geological survey  

USGS Publications Warehouse

The U.S. Geological Survey (USGS) has begun a digital cartographic modernization program. Keys to that program are the creation of a multiscale database, a feature-based file structure that is derived from a spatial data model, and a series of "templates" or rules that specify the relationships between instances of entities in reality and features in the database. The database will initially hold data collected from the USGS standard map products at scales of 1:24,000, 1:100,000, and 1:2,000,000. The spatial data model is called the digital line graph-enhanced model, and the comprehensive rule set consists of collection rules, product generation rules, and conflict resolution rules. This modernization program will affect the USGS mapmaking process because both digital and graphic products will be created from the database. In addition, non-USGS map users will have more flexibility in uses of the databases. These remarks are those of the session discussant made in response to the six papers and the keynote address given in the session. ?? 1992.

Morrison, J.L.

1992-01-01

391

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

392

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

393

Instructions for using the U.S. Geological Survey data base of wells on Long Island, New York  

USGS Publications Warehouse

The population of central and eastern Long Island, New York depends on ground water for its supply of fresh water. Data on more than 7,500 wells on the island have been collected by various State and local agencies and compiled by the U.S. Geological Survey since 1906. During 1975-81, the Geological Survey developed a data base for its Data General Nova 1220 minicomputer to store and process the well information. The data base is composed of seven sections, each of which may be revised and updated. Three types of magnetic devices with limited capacity are used for data storage--disk, Linctape, and 9-track tape. This breakdown makes each section small enough to store and update on a small minicomputer while allowing simultaneous data retrieval from all sections. This manual gives complete instructions for revising, storing, and retrieving well data. Most programming is in FORTRAN, but some is in assembly language. (USGS)

Hawkins, George W.; Terlecki, Gregory M.

1983-01-01

394

U.S. Geological Survey water-resource monitoring activities in support of the Wyoming Landscape Conservation Initiative  

USGS Publications Warehouse

The quality of the Nation’s water resources are vital to the health and well-being of both our communities and the natural landscapes we value. The U.S. Geological Survey investigates the occurrence, quantity, quality, distribution, and movement of surface water and groundwater and provides this information to engineers, scientists, managers, educators, and the general public. This information also supplements current (2013) and historical water data provided by the National Water Information System. The U.S. Geological Survey collects and shares data nationwide, but how those data are used is often site specific; this variety of data assists natural-resource managers in addressing unique, local, and regional challenges.

Soileau, Suzanna; Miller, Kirk

2013-01-01

395

A Survey of the Current Study and Teaching of North American Indian Languages in the United States and Canada. CAL-ERIC/CLL Series on Languages and Linguistics, No. 17.  

ERIC Educational Resources Information Center

This survey attempts to bring together as much information as possible on the current study and teaching of North American Indian languages in the United States and Canada. The primary source of data for this survey was a questionnaire distributed in the spring of 1973 to 61 universities and colleges in the U.S. and Canada. Other sources were…

Martin, Jeanette

396

Accuracy assessment of the U.S. Geological Survey National Elevation Dataset, and comparison with other large-area elevation datasets: SRTM and ASTER  

USGS Publications Warehouse

The National Elevation Dataset (NED) is the primary elevation data product produced and distributed by the U.S. Geological Survey. The NED provides seamless raster elevation data of the conterminous United States, Alaska, Hawaii, U.S. island territories, Mexico, and Canada. The NED is derived from diverse source datasets that are processed to a specification with consistent resolutions, coordinate system, elevation units, and horizontal and vertical datums. The NED serves as the elevation layer of The National Map, and it provides basic elevation information for earth science studies and mapping applications in the United States and most of North America. An important part of supporting scientific and operational use of the NED is provision of thorough dataset documentation including data quality and accuracy metrics. The focus of this report is on the vertical accuracy of the NED and on comparison of the NED with other similar large-area elevation datasets, namely data from the Shuttle Radar Topography Mission (SRTM) and the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER).

Gesch, Dean B.; Oimoen, Michael J.; Evans, Gayla A.

2014-01-01

397

The Distribution of Faint Satellites around Central Galaxies in the Canada-France-Hawaii Telescope Legacy Survey  

NASA Astrophysics Data System (ADS)

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 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 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

2012-11-01

398

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

399

MODFLOW-2000, The U.S. Geological Survey Modular Ground-Water Model -- GMG Linear Equation Solver Package Documentation  

USGS Publications Warehouse

A geometric multigrid solver (GMG), based in the preconditioned conjugate gradient algorithm, has been developed for solving systems of equations resulting from applying the cell-centered finite difference algorithm to flow in porous media. This solver has been adapted to the U.S. Geological Survey ground-water flow model MODFLOW-2000. The documentation herein is a description of the solver and the adaptation to MODFLOW-2000.

Wilson, John D.; Naff, Richard L.

2004-01-01

400

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

401

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

402

The elevated risk for violence against cohabiting women: a comparison of three nationally representative surveys of Canada.  

PubMed

This study examined cohabiting women's elevated risk for male partner violence. It was predicted that an increased rate of cohabitation would be accompanied by a reduction in the bias toward selection into cohabitation and that this would result in greater similarity between characteristics of cohabiting and marital relationships as well as in their respective rates of violence. The results were generally consistent with this prediction. Cohabitation increased in Canada between 1993 and 2004, which appeared to have been reflected in some reduction in differences in selection and relationship variables as well as in lower rates of violence for cohabiting relative to married women. Nevertheless, persons who cohabited remained a select group and several relationship differences persisted. These selection and relationship differences accounted for the persistence of cohabiting women's elevated odds of violence in each survey. Results suggested that rates of violence in cohabiting and marital unions should eventually converge. PMID:18559868

Brownridge, Douglas A

2008-07-01

403

Proceedings of a U.S. Geological Survey pressure-sensor Workshop, Denver, Colorado, July 28-31, 1992  

USGS Publications Warehouse

The U.S. Geological Survey (USGS) conducted a Pressure Sensor Workshop, oriented toward the measurement of stage in surface waters, in Denver, Colorado, July 28-31, 1992. Twenty attendees from the U.S. Geological Survey and the National Oceanic and Atmospheric Administration gave presentations concerning their experiences with the use of pressure sensors in hydrologic investigations. This report is a compilation of the abstracts of the presentations made at the workshop. Workshop participants concluded that each of the sensors evaluated by the U.S. Geological Survey has strengths and weaknesses. Personnel contemplating the use of pressure sensors discussed at this workshop should contact workshop attendees and consult with them about their experiences with those sensors. The attendees preferred to use stilling wells with float-operated water-level sensors as the primary means for monitoring water levels. However, pressure sensor systems were favored as replacements for mercury manometers and as alternatives to stilling wells at sites where stilling wells are not practical or cost effective.

Wilbourn, Sammy L.

1994-01-01

404

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

E-print Network

Chief Scientist, USGS Central Region Geologic Hazards Team Box 25046 Denver Federal Center MS 966 Denver ................................................................................................................6 Plot Experiments ..................................................................................................................................7 Plot Topography and Stratigraphy

405

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

406

Employer-Sponsored Training in Canada: Synthesis of the Literature Using Data from the Workplace and Employee Survey. Learning Research Series  

ERIC Educational Resources Information Center

This report presents a review of studies and articles on employer-sponsored training in Canada. The authors reviewed documentation that used data from the Workplace and Employee Survey (WES) and offer a synthesis of the current state of knowledge. The report looks alternately at issues pertaining to determinants of training from the employer and…

Dostie, Benoit; Montmarquette, Claude

2007-01-01

407

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-François and Saint-Pierre, the Richelieu River, the Québec

Lucie Dutil; Denise Bélanger; Catherine M Couillard

1997-01-01

408

U.S. GEOLOGICAL SURVEY--MINERALS INFORMATION--1996 1 By Joseph Gambogi  

E-print Network

primarily in the minerals anatase, brookite, titanium slag, and synthetic rutile. Australia, Canada, Norway slag is not produced in the United States. from commercial aerospace and golf club markets resulted

409

Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory: Processing, taxonomy, and quality control of benthic macroinvertebrate samples  

NSDL National Science Digital Library

This US Geological Survey Open-File Report (00-212) describes analytical techniques for benthic macroinvertebrates. Available in .pdf format, the 49-page report includes information on such analytical techniques as chemical equipment supplies, taxonomic identification, and more.

2000-01-01

410

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

411

Optimal mapping of terrestrial gamma dose rates using geological parent material and aerogeophysical survey data.  

PubMed

Regulatory authorities need ways to estimate natural terrestrial gamma radiation dose rates (nGy h?¹) across the landscape accurately, to assess its potential deleterious health effects. The primary method for estimating outdoor dose rate is to use an in situ detector supported 1 m above the ground, but such measurements are costly and cannot capture the landscape-scale variation in dose rates which are associated with changes in soil and parent material mineralogy. We investigate the potential for improving estimates of terrestrial gamma dose rates across Northern Ireland (13,542 km²) using measurements from 168 sites and two sources of ancillary data: (i) a map based on a simplified classification of soil parent material, and (ii) dose estimates from a national-scale, airborne radiometric survey. We used the linear mixed modelling framework in which the two ancillary variables were included in separate models as fixed effects, plus a correlation structure which captures the spatially correlated variance component. We used a cross-validation procedure to determine the magnitude of the prediction errors for the different models. We removed a random subset of 10 terrestrial measurements and formed the model from the remainder (n = 158), and then used the model to predict values at the other 10 sites. We repeated this procedure 50 times. The measurements of terrestrial dose vary between 1 and 103 (nGy h?¹). The median absolute model prediction errors (nGy h?¹) for the three models declined in the following order: no ancillary data (10.8) > simple geological classification (8.3) > airborne radiometric dose (5.4) as a single fixed effect. Estimates of airborne radiometric gamma dose rate can significantly improve the spatial prediction of terrestrial dose rate. PMID:23147566

Rawlins, B G; Scheib, C; Tyler, A N; Beamish, D

2012-12-01

412

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.; Wünnemann, K.; Poelchau, M. H.; Elbeshausen, D.; Núñez Del Prado, H.

2009-08-01

413

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 L.; Sweat, Michael J.

2009-01-01

414

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

PubMed

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. PMID:17054535

Toccalino, Patricia L; Norman, Julia E

2006-10-01

415

Pennsylvania Geology  

NSDL National Science Digital Library

Three decades after it was published, the Second Geological Survey of Pennsylvania was described as "the most remarkable series of reports ever issued by any survey." Considering the diversity of other geological reports, this was no small compliment. Drawing on support from the Marion and Kenneth Pollock Libraries Program Fund, the Pennsylvania State University Libraries' Digital Preservation Unit was able to digitize not only this fabled Survey, but also the Third and Fourth Surveys as well. Visitors can use the search engine on the homepage to look for items of interest, or they can just browse through the collection at their leisure. The surveys include various maps and illustrations that track mineral deposits and the disposition and location of other natural resources. Additionally, users can look through a miscellaneous set of publications from the early 20th century related to survey work performed by the U.S. Geological Survey.

416

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

417

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

418

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

419

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?50 km from the major centre. Participants accessing services >50 km 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

420

The Canada-France Ecliptic Plane Survey—Full Data Release: The Orbital Structure of the Kuiper Belt  

NASA Astrophysics Data System (ADS)

We report the orbital distribution of the trans-Neptunian objects (TNOs) discovered during the Canada-France Ecliptic Plane Survey (CFEPS), whose discovery phase ran from early 2003 until early 2007. The follow-up observations started just after the first discoveries and extended until late 2009. We obtained characterized observations of 321 deg2 of sky to depths in the range g ~ 23.5-24.4 AB mag. We provide a database of 169 TNOs with high-precision dynamical classification and known discovery efficiency. Using this database, we find that the classical belt is a complex region with sub-structures that go beyond the usual splitting of inner (interior to 3:2 mean-motion resonance [MMR]), main (between 3:2 and 2:1 MMR), and outer (exterior to 2:1 MMR). The main classical belt (a = 40-47 AU) needs to be modeled with at least three components: the "hot" component with a wide inclination distribution and two "cold" components (stirred and kernel) with much narrower inclination distributions. The hot component must have a significantly shallower absolute magnitude (Hg ) distribution than the other two components. With 95% confidence, there are 8000+1800 -1600 objects in the main belt with Hg <= 8.0, of which 50% are from the hot component, 40% from the stirred component, and 10% from the kernel; the hot component's fraction drops rapidly with increasing Hg . Because of this, the apparent population fractions depend on the depth and ecliptic latitude of a trans-Neptunian survey. The stirred and kernel components are limited to only a portion of the main belt, while we find that the hot component is consistent with a smooth extension throughout the inner, main, and outer regions of the classical belt; in fact, the inner and outer belts are consistent with containing only hot-component objects. The Hg <= 8.0 TNO population estimates are 400 for the inner belt and 10,000 for the outer belt to within a factor of two (95% confidence). We show how the CFEPS Survey Simulator can be used to compare a cosmogonic model for the orbital element distribution to the real Kuiper Belt. Based on observations obtained with MegaPrime/MegaCam, a joint project of the Canada-France-Hawaii Telescope (CFHT) and CEA/DAPNIA, at CFHT which is operated by the National Research Council (NRC) of Canada, the Institute National des Sciences de l'Universe 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 the Canadian Astronomy Data Centre as part of the CFHT Legacy Survey, a collaborative project of NRC and CNRS.

Petit, J.-M.; Kavelaars, J. J.; Gladman, B. J.; Jones, R. L.; Parker, J. Wm.; Van Laerhoven, C.; Nicholson, P.; Mars, G.; Rousselot, P.; Mousis, O.; Marsden, B.; Bieryla, A.; Taylor, M.; Ashby, M. L. N.; Benavidez, P.; Campo Bagatin, A.; Bernabeu, G.

2011-10-01

421

Geology at the steepbank [open quotes]In-Situ[close quotes] HASDrive Pilot Site, Athabasca Tar Sands, Canada  

SciTech Connect

The Athabasca tar sands of northeastern Alberta contain 13 trillion bbl of bitumen in place, 5% of which is accessible by surface mining techniques. If there is to be significant exploitation of the deeper buried resources, it will have to be done using subsurface [open quotes]in-situ[close quotes] technologies. Compared to surface mining, these methods are potentially more economic, can be developed on a smaller scale and are environmentally more sound. The Lower Cretaceous McMurray Formation is by far the richest hydrocarbon bearing unit in Canada. Overall, it is a transgressive sand and mud dominated unit deposited in fluvial to marine environments. The main reservoir unit is an estuarine sand, whole complexity makes for an elusive exploration target and a challenging development project. Successful reservoir management of a subsurface [open quotes]in-situ[close quotes] operation depends on a solid understanding of estuarine stratigraphy and its lithologic heterogeneities. For the past 20 years, Chevron has been developing an [open quotes]in-situ[close quotes] heavy oil extraction process called HASDrive (Heated Annulus Steam Drive). Recently, HASDrive and other technologies have been employed on a 77 mi[sup 2] lease with 9 billion bbl of heavy oil in place. The goal is to bring the lease to a fully commercial 10,000 bbl/day operation by 1997. In the exploration phase, 64 core hole wells were located with the aid of shallow 3-D seismic and electromagnetic techniques. The current pilot phase has utilized HASDrive to extract the bitumen from and sand and specialized seismic methods to monitor the development of the steam chamber.

Holloway, D.C.

1993-02-01

422

Airborne Geophysical Surveys Illuminate the Geologic and Hydrothermal Framework of the Pilgrim Springs Geothermal Area, Alaska  

NASA Astrophysics Data System (ADS)

An airborne magnetic and frequency-domain electromagnetic (EM) survey of the Pilgrim Springs geothermal area, located on the Seward Peninsula in west-central Alaska, delineates key structures controlling hydrothermal fluid flow. Hot springs, nearby thawed regions, and high lake temperatures are indicative of high heat flow in the region that is thought to be related to recent volcanism. By providing a region-wide geologic and geophysical framework, this work will provide informed decisions regarding drill-site planning and further our understanding of geothermal systems in active extensional basins. Helicopter magnetic and EM data were acquired using a Fugro RESOLVE system equipped with a high sensitivity cesium magnetometer and a multi-coil, multi-frequency EM system sensitive to the frequency range of 400-140,000 Hz. The survey was flown ~40 m above ground along flight lines spaced 0.2-0.4 km apart. Various derivative and filtering methods, including maximum horizontal gradient of the pseudogravity transformation of the magnetic data, are used to locate faults, contacts, and structural domains. A dominant northwest trending anomaly pattern characterizes the northeastern portion of the survey area between Pilgrim Springs and Hen and Chickens Mountain and may reflect basement structures. The area south of the springs, however, is dominantly characterized by east-west trending, range-front-parallel anomalies likely caused by late Cenozoic structures associated with the north-south extension that formed the basin. Regionally, the springs are characterized by a magnetic high punctuated by several east-west trending magnetic lows, the most prominent occurring directly over the springs. The lows may result from demagnetization of magnetic material along range-front parallel features that dissect the basin. We inverted in-phase and quadrature EM data along each profile using the laterally-constrained inversion of Auken et al. (2005). Data were inverted for 20-layer models starting from a 50 ohm-m half-space and with no prior model. Lateral constraints were relaxed in proximity to known or suspected structures using horizontal gradients in the measured data as a proxy for lateral variations in subsurface resistivity. A region of low resistivity (< 5 ohm-m) characterizes Pilgrim Springs and extends farther to the north and northeast, indicative of high heat flow and saline geothermal fluids associated with the hot springs. More moderate resistivities (50-200 ohm-m) characterize surrounding rivers and streams and are likely due to variations in sediment clay content. High resistivities (> 1000 ohm-m) associated with the mountain ranges reflect Precambrian metamorphic basement and overlying Paleozoic carbonates. An equally resistive region exists between the range front of the Kigluaik Mountains and dense stream channels surrounding Pilgrim Springs. This region of high resistivity reflects permafrost in the subsurface, in agreement with permafrost mapping in the area. An east-west trending, low resistivity (100-200 ohm-m) anomaly follows the base of the Kigluaik Mountains and may indicate fractured rocks within the range-front fault that hosted fluid flow and subsequent mineralization.

McPhee, D. K.; Glen, J. M.; Bedrosian, P. A.

2012-12-01

423

Soil geochemical survey over concealed kimberlites in the Attawapiskat area in northern Canada  

E-print Network

ABSTRACT: A soil geochemical survey was conducted over kimberlites in a discontinuous permafrost zone in the James Bay Lowlands, southeastern Hudson Bay Lowlands. The kimberlites are concealed by 10 to 30 m of tills and Tyrell Sea clay sediments. Samples of humus and B-horizon soil were collected

Keiko H. Hattori; Stewart Hamilton; Julie Kong; John Gravel

424

HumanWildlife Interactions 8(2):245250, Fall 2014 Survey of Canada goose feces for  

E-print Network

be a conduit for transmitting Giardia, a protozoan that is parasitic to humans. We surveyed fecal droppings). Giardiasis is a common waterborne disease of humans caused by the protozoan, G. lamblia (Hamnes et al. 2006- protozoan drugs known as nitroimidazoles; however, drug resistance can make treatment difficult (Gardner

425

Survey of Salmonid Pathogens in Ocean-Caught Fishes in British Columbia, Canada  

Microsoft Academic Search

A survey of wild fishes captured around marine net-pen salmon farms and from open waters for certain salmonid pathogens was conducted in the coastal waters of British Columbia. Viral hemorrhagic septicemia virus was detected in Pacific herring Clupea pallasi, shiner perch Cymatogaster aggregata, and threespine sticklebacks Gasterosteus aculeatus. Infectious hematopoietic necrosis (IHN) virus was detected in one Pacific herring (collected

M. L. Kent; G. S. Traxler; D. Kieser; J. Richard; S. C. Dawe; R. W. Shaw; G. Prosperi-Porta; J. Ketcheson; T. P. T. Evelyn

1998-01-01

426

The Credibility of Monetary Policy: A Survey of the Literature with Some Simple Applications to Canada  

Microsoft Academic Search

this paper is to survey the literature fromthe perspective of a central bank practitioner. We have three specific objectives. The first isto get a sense of why the credibility problem is important for the economy and forpolicymakers. The second is to draw some lessons from the literature that a monetaryauthority can use to enhance the credibility of its policy. And

Robert A. Amano; Paul Fenton; David Tessier; Agatha Christie

1997-01-01

427

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

428

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

E-print Network

process for the Nation's proposed geologic repository for high-level nuclear waste at Yucca Mountain ountains Yucca Mountain Pahute Mesa Yucca Flat Valley Penoyer Valley Penoyer Valley Nevada Test Site

429

Proposed program for and present status of the Geological Survey's investigation of domestic resources of radioactive raw materials  

USGS Publications Warehouse

This interim report is designed to show the present status of the Geological Survey's information and the parts of a comprehensive program necessary to improve our information about the raw material resources of uranium and thorium. Rarely in geologic work has it been necessary. to determine so completely a nation's resources of useful minerals in so brief a span of time. Ordinarily, information on mineral resources Is accumulated during a long period of years. However, uranium and thorium were suddenly thrust from a position of subsidiary economic interest into one of great strategic importance. Information concerning their occurrence must, therefore, be obtained as rapidly as reliable methods of investigation will permit. Accordingly the program must be at once comprehensive and carried out over an area more extensive than is usual in the search for and appraisal of most other mineral resources.

Bulter, A.P., Jr.; Killeen, P.L.; Page, G.B.; Rubey, W.W.

1983-01-01

430

Framework for a U.S. Geological Survey Hydrologic Climate-Response Program in Maine  

USGS Publications Warehouse

This report presents a framework for a U.S. Geological Survey (USGS) hydrologic climate-response program designed to provide early warning of changes in the seasonal water cycle of Maine. Climate-related hydrologic changes on Maine's rivers and lakes in the winter and spring during the last century are well documented, and several river and lake variables have been shown to be sensitive to air-temperature changes. Monitoring of relevant hydrologic data would provide important baseline information against which future climate change can be measured. The framework of the hydrologic climate-response program presented here consists of four major parts: (1) identifying homogeneous climate-response regions; (2) identifying hydrologic components and key variables of those components that would be included in a hydrologic climate-response data network - as an example, streamflow has been identified as a primary component, with a key variable of streamflow being winter-spring streamflow timing; the data network would be created by maintaining existing USGS data-collection stations and establishing new ones to fill data gaps; (3) regularly updating historical trends of hydrologic data network variables; and (4) establishing basins for process-based studies. Components proposed for inclusion in the hydrologic climate-response data network have at least one key variable for which substantial historical data are available. The proposed components are streamflow, lake ice, river ice, snowpack, and groundwater. The proposed key variables of each component have extensive historical data at multiple sites and are expected to be responsive to climate change in the next few decades. These variables are also important for human water use and (or) ecosystem function. Maine would be divided into seven climate-response regions that follow major river-basin boundaries (basins subdivided to hydrologic units with 8-digit codes or larger) and have relatively homogeneous climates. Key hydrologic variables within each climate-response region would be analyzed regularly to maintain up-to-date analyses of year-to-year variability, decadal variability, and longer term trends. Finally, one basin in each climate-response region would be identified for process-based hydrologic and ecological studies.

Hodgkins, Glenn A.; Lent, Robert M.; Dudley, Robert W.; Schalk, Charles W.

2009-01-01

431

The U.S. Geological Survey coal assessment of the Gulf Coastal region, a progress report  

SciTech Connect

The US Geological Survey (USGS) is conducting a comprehensive assessment of the major coal regions of the country. This program, known as the National Coal Resource Assessment (NCRA), is focused on five major coal-bearing regions in the country: the Appalachian basin, Illinois basin, Northern Rocky Mountains and Great Plains, Colorado Plateau, and the Gulf Coast region. In this program, the authors are characterizing the quantity and quality of coals that are expected to be mined during the next 30 years. As part of this effort, they are conducting an evaluation of the stratigraphic setting, resource potential, and the quality of the lignites in five coal-producing areas within the Gulf Coast region. The results of these efforts will be a series of digital Geographic Information System (GIS) maps, text, and tables that will be published in a CD-ROM format. These products, along with a national summary CD-ROM, are expected to be completed by 1999. The assessment of the Gulf Coast region is focused primarily on four areas that are currently producing coal as shown in a figure. These areas are the: (1) Sabine area, which includes parts of northwest Louisiana and northeast Texas; (2) northeast Texas; (3) central Texas; and (4) south Texas. In addition, a fifth area in Mississippi has been evaluated because a new surface mine has been proposed for that area. The Gulf Coast coal region produces about 57 million short tons of coal annually from the states of Louisiana and Texas from Wilcox Group coals. The primary intervals of study for this project are the Wilcox Group (Paleocene-Eocene) and selected coal-producing intervals (such as the Eocene Jackson and Claiborne Groups, and Cretaceous Olmos Formation in south Texas) that are producing or have potential for producing coal in the near future. The objectives of this project are to provide high-quality, organized information and interpretations on the location, quality, and quantity of the coal to be mined in the Gulf Coast area during the next several decades in order to meet the needs of the region for reliable, low cost, environmentally-acceptable energy.

Warwick, P.D.; Aubourg, C.E.; Crowley, S.S. [Geological Survey, Reston, VA (United States)] [and others

1998-12-31

432

U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative: 2011 annual report  

USGS Publications Warehouse

This is the fourth report produced by the U.S. Geological Survey (USGS) for the Wyoming Landscape Conservation Initiative (WLCI) to detail annual work activities. In FY2011, there were 37 ongoing, completed, or new projects conducted under the five 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. The four new work activities were (1) development of the Western Energy Citation Clearinghouse, a Web-based energy-resource database of references for literature and on-line resources focused on energy development and its effects on natural resources; (2) a study to support the Sublette County Conservation District in ascertaining potential water-quality impacts to the New Fork River from energy development in the Pinedale Anticline Project Area; (3) a study to test the efficacy of blending high-frequency temporal data provided by Moderate Resolution Imaging Spectroradiometer (MODIS) sensors and high-resolution Landsat data for providing the fine-resolution data required to evaluate habitat responses to management activities at the landscape level; and (4) a study to examine the seasonal water chemistry of Muddy Creek, including documenting salinity patterns and providing a baseline for assessing potential effects of energy and other development on water quality in the Muddy Creek watershed. Two work activities were completed in FY2011: (1) the assessment of rancher perceptions of energy development in Southwest Wyoming and (2) mapping aspen stands and conifer encroachment using classification and regression tree (CART) analysis for effectiveness monitoring. The USGS continued to compile data, develop geospatial products, and upgrade Web-based products in support of both individual and overall WLCI efforts, including (1) ranking and prioritizing proposed conservation projects, (2) developing the WLCI integrated assessment, (3) developing the WLCI 5-year Conservation Action Plan, and (4) continuing to upgrade the content and improve the functionality of the WLCI Web site. For the WLCI FY2012 annual report, a decision was made to greatly reduce the overall length of the annual report, which will be accomplished by simplifying the report format and focusing on the take-home messages of each work activity for WLCI partners.

Bowen, Zachary H.; Aldridge, Cameron L.; Anderson, Patrick J.; Assal, Timothy J.; Biewick, Laura R.H.; Blecker, Steven W.; Boughton, Gregory K.; Carr, Natasha B.; Chalfoun, Anna D.; Chong, Geneva W.; Clark, Melanie L.; Diffendorfer, Jay E.; Fedy, Bradley C.; Foster, Katharine; Garman, Steven L.; Germaine, Stephanie; Hethcoat, Matthew G.; Holloway, JoAnn; Homer, Collin; Kauffman, Matthew J.; Keinath, Douglas; Latysh, Natalie; Manier, Daniel J.; McDougal, Robert R.; Melcher, Cynthia P.; Miller, Kirk A.; Montag, Jessica; Olexa, Edward M.; Potter, Christopher J.; Schell, Spencer; Shafer, Sarah L.; Smith, David B.; Stillings, Lisa L.; Sweat, Michael J.; Tuttle, Michele L.; Wilson, Anna B.

2013-01-01

433

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

NASA Astrophysics Data System (ADS)

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 about current earthquakes in the U.S. and around the world, and the second most visited portion of the website are the education-related pages. People are eager for information, and they are most interested in "what's in my backyard?" Recent and future web developments are aimed at answering this question, making the information more relevant to users, and enabling users to more quickly and easily find the information they are looking for. Recent and/or current web developments include the new enhanced Recent Global Earthquakes and U.S. Earthquakes webpages, the Earthquake in the News system, the Rapid Accurate Tectonic Summaries (RATS), online Significant Earthquake Summary Posters (ESP's), and the U.S. Quaternary Fault & Fold Database, the details of which are covered individually in greater detail in this or other sessions. Future planned developments include a consistent look across all EHP webpages, an integrated one-stop-shopping earthquake notification (EQMail) subscription webpage, new navigation tabs, and a backend database allowing the user to search for earthquake information across all the various EHP websites (on different webservers) based on a topic or region. Another goal is to eventually allow a user to input their address (Zip Code?) and in return receive all the relevant EHP information (and links to more detailed information) such as closest fault, the last significant nearby earthquake, a local seismicity map, and a local hazard map, for example. This would essentially be a dynamic report based on the entered location. This type of "what's in my backyard?" information would be of great benefit to both various organizations, such as insurance agencies and building contractors, and the general public.

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

2003-12-01

434

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

435

Landscape Change Priorities at the U.S.Geological Survey, 2005-2015  

NASA Astrophysics Data System (ADS)

In February 2004 the U.S. Geological Survey (USGS) convened a Science Planning Team with a charge to create a succinct strategy to define, organize, manage, and expand the scientific activities of the Geography Discipline over the next 10 years (2005-2015). Over the ensuing months the Team has held listening sessions in five cities, meeting with 150 scientists and science managers from inside and outside the USGS to gain understanding of the strategic science issues and opportunities for the Geography Discipline. In a draft of the science plan the Science Planning Team has identified 10 priority science goals in three areas of societal interest: landscape change, the societal impacts of landscape change, especially related to hazards, environment, and natural resources, and the development, management, and access to geospatial information. Landscape change is a primary focus of the strategy and includes goals to (1) describe and understand the status of the nation's land surface and how is it changing; (2) describe and understand the local, regional, national, and global drivers of change; (3) predict the likely landscape changes over the next 20-50 years; and (4) describe and understand the consequences of landscape change on human and environmental systems. The critical steps identified to realize these goals are: development of a land use history of North America; development of periodic assessments of land cover responses associated with regional to global drivers, including economic globalization; development of a local to regional-scale land cover forecasting capability; and assessment of biodiversity and habitat consequences associated with landscape changes at the boundaries between human settlements and less developed areas. In most cases successful outcomes associated with these actions will require collaboration with scientists from the USGS, other government agencies, universities, and non-governmental organizations. As part of the implementation of the plan, a USGS Land Cover Institute is proposed that would include a strong focus on landscape change and the addition of at least 20 doctoral-level researchers. The final plan is expected to be released in January 2005.

McMahon, G.; Loveland, T. R.

2004-12-01

436

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

437

A history of the Water Resources Branch, U.S. Geological Survey; Volume I, from predecessor surveys to June 30, 1919  

USGS Publications Warehouse

This volume is the first in a series of chronological summaries of the activities and achievements of the Water Resources Division of the U.S. Geological Survey. First published in 1939 through private subscription by interested personnel, Volume I is now available as a public document. The manuscripts of the following three volumes that cover the years 1919-47, all by the author of this volume, were reproduced by the Division in the 1950's for internal use only. Their publication for public use remains one of the Division's goals.

Follansbee, R.

1994-01-01

438

U.S. GEOLOGICAL SURVEY--MINERALS INFORMATION 1 By Patricia A. Plunkert  

E-print Network

. Although imports from Russia continued to decline from their peak level in 1994, Russia remained the second% of the world total, followed by Russia with 14% and Canada with 11%. World metal production increased slightly. of America (Alcoa), Reynolds Metals Co., the United Steelworkers of America (USW), and the Aluminum, Brick

439

U.S. Geological Survey and Afghanistan Ministry of Mines and Industry cooperative assessment of Afghanistan's undiscovered oil and gas  

USGS Publications Warehouse

Results of the U.S. Geological Survey and Afghanistan Ministry of Mines and Industry cooperative assessment of undiscovered petroleum resources of northern Afghanistan were first released through this presentation on March 14, 2006, at the Afghan Embassy in Washington, D.C. On March 15 the results were presented in Kabul, Afghanistan. The purpose of the assessment and release of the results is to provide energy data required to implement the rebuilding and development of Afghanistan's energy infrastructure. This presentation includes a summary of the goals, process, methodology, results, and accomplishments of the assessment. It provides context for Fact Sheet 2006-3031, a summary of assessment results provided in the presentations.

Wandrey, Craig J.; Ulmishek, Gregory; Agena, Warren; Klett, Timothy R.; Afghanistan Oil and Gas Research Assessment Team

2006-01-01

440

Land-cover change research at the U.S. Geological Survey-assessing our nation's dynamic land surface  

USGS Publications Warehouse

The U.S. Geological Survey (USGS) recently completed an unprecedented, 27-year assessment of land-use and land-cover change for the conterminous United States. For the period 1973 to 2000, scientists generated estimates of change in major types of land use and land cover, such as development, mining, agriculture, forest, grasslands, and wetlands. To help provide the insight that our Nation will need to make land-use decisions in coming decades, the historical trends data is now being used by the USGS to help model potential future land use/land cover under different scenarios, including climate, environmental, economic, population, public policy, and technological change.

Wilson, Tamara S.

2011-01-01