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184900 results.

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Trace elements and semi-volatile organic compounds in bed sediments from streams and impoundments at Fort Gordon, Georgia
James B. McConnell, T. C. Stamey, H.H. Persinger Jr., K.W. McFadden
2000, Open-File Report 2000-87
In May 1998, the U.S. Geological Survey, in cooperation with the Environmental and Natural Resources Management Office of the U.S. Army Signal Center and Fort Gordon, investigated the presence and disbursal of trace elements and semi-volatile organic compounds in bed sediments from selected streams and impoundments at the Fort Gordon...
Field estimates of gravity terrain corrections and Y2K-compatible method to convert from gravity readings with multiple base stations to tide- and long-term drift-corrected observations
Donald Plouff
2000, Open-File Report 2000-140
Gravity observations are directly made or are obtained from other sources by the U.S. Geological Survey in order to prepare maps of the anomalous gravity field and consequently to interpret the subsurface distribution of rock densities and associated lithologic or geologic units. Observations are made in the field with gravity...
Estuarine water-quality and sediment data, and surface-water and ground-water-quality data, Naval Submarine Base Kings Bay, Camden County, Georgia, January 1999
David C. Leeth, Owen G. Holloway
2000, Open-File Report 2000-75
In January 1999, the U.S. Geological Survey collected estuarine-water, estuarine-sediment, surface-water, and ground-water quality samples in the vicinity of Naval Submarine Base Kings Bay, Camden County, Georgia. Data from these samples are used by the U.S. Navy to monitor the impact of submarine base activities on local water resources. Estuarine...
Selected hydrologic data, through water year 1998, Black Hills Hydrology Study, South Dakota
Daniel G. Driscoll, Wendell L. Bradford, Michael J. Moran
2000, Open-File Report 2000-70
This report presents water-level and water-quality data that have been collected or compiled, through water year 1998, for the Black Hills Hydrology Study. This study is a long-term coop-erative effort between the U.S. Geological Survey, the South Dakota Department of Environment and Natural Resources, and the West Dakota Water Development...
Forces dictating colloidal interactions between viruses and soil
Sandip Chattopadhyay, Robert W. Puls
2000, Chemosphere (41) 1279-1286
The fate and transport of viruses in soil and aquatic environments were studied with respect to the different forces involved in the process of sorption of these viruses on soil particles. In accordance with the classical DLVO theory, we have calculated the repulsive electrostatic forces and the attractive van der...
The web of life: Natural science information on the Internet
Gail Clement
2000, Journal of Library Administration (30) 271-292
As society has come to equate economic prosperity with the health of our living resources, national science policy has called for the development of a comprehensive digital knowledge base to support informed decision making and wise resource management. The Internet and World Wide Web demonstrate the earliest stages of...
High Plains Regional Ground-water Study web site
Sharon L. Qi
2000, Fact Sheet 049-00
Now available on the Internet is a web site for the U.S. Geological Survey's (USGS) National Water-Quality Assessment (NAWQA) Program-High Plains Regional Ground-Water Study. The purpose of the web site is to provide public access to a wide variety of information on the USGS investigation of the ground-water resources within...
National land cover dataset
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 108-00
The U.S. Geological Survey (USGS), in cooperation with the U.S. Environmental Protection Agency, has produced a land cover dataset for the conterminous United States on the basis of 1992 Landsat thematic mapper imagery and supplemental data. The National Land Cover Dataset (NLCD) is a component of the USGS Land Cover...
Relationships among sea-floor structure and benthic communities in Long Island Sound at regional and benthoscape scales
Roman N. Zajac, Ralph S. Lewis, Larry J. Poppe, David C. Twichell, Joseph Vozarik, Mary L. DiGiacomo-Cohen
2000, Journal of Coastal Research (16) 627-640
Long Island Sound is comprised of a rich and spatially heterogeneous mix of sea-floor environments which provide habitat for an equally diverse set of assemblages of soft-sediment communities. Information from recent research on the geomorphological and chemical attributes of these environments, as well as from studies of the hydrodynamics of...
Comment on RamaRao et al. [1995] and LaVenue et al. [1995]
Richard L. Cooley, Mary C. Hill
2000, Water Resources Research (36) 2795-2797
A method for stochastic modeling of groundwater flow systems using a combination of pilot point parameterization and conditional simulation was presented by RamaRao et. al [1995] and LaVenue et. al [1995]. (We will collectively term these two papers RLMM and term the method developed in RLMM the CS method here.) RLMM (pp....
Geology of caves
W.E. Davies, I.M. Morgan
2000, The Earth Scientist (17) 12-15
No abstract available. ...
Ecogeochemistry of the subsurface food web at pH 0–2.5 in Iron Mountain, California, U.S.A.
Eleanora I. Robbins, Teresa M. Rodgers, Charles N. Alpers, D. Kirk Nordstrom
2000, Hydrobiologia (433) 15-23
Pyrite oxidation in the underground mining environment of Iron Mountain, California, has created the most acidic pH values ever reported in aquatic systems. Sulfate values as high as 120 000 mg l−1 and iron as high as 27 600 mg l−1 have been measured in the mine water, which also...
Comment on “Sea level rise shown to drive coastal erosion”
Sallenger Jr., Robert Morton, Charles Fletcher, E. Robert Thieler, Peter Howd
2000, Eos, Transactions, American Geophysical Union (81) 436-436
In a recent article (Eos, Trans., AGU, February 8, 2000, p.55), Leatherman et al. [2000] state that they have confirmed an association between sea-level rise and coastal erosion. Applying their results to the New Jersey, Delaware, and Maryland coasts and using a projected sea-level rise, the authors predict that by...
Mercury in Long Island Sound sediments
J.C. Varekamp, Marilyn R. Buchholtz ten Brink, E.I. Mecray, B. Kreulen
2000, Journal of Coastal Research (16) 613-626
Mercury (Hg) concentrations were measured in 394 surface and core samples from Long Island Sound (LIS). The surface sediment Hg concentration data show a wide spread, ranging from 600 ppb Hg in westernmost LIS. Part of the observed range is related to variations...
Late-stage development of the Bryant Canyon turbidite pathway on the Louisiana continental slope
David C. Twichell, Hans Nelson, John E. Damuth
2000, Conference Paper, Deep-water reservoirs of the world : Gulf Coast Section Society of Economic Paleontologists and Mineralogists Foundation, 20th annual Bob F. Perkins Research Conference, December 3-6, 2000, Houston, Texas
GLORIA sidescan imagery, multibeam bathymetry, seismic profiles, and piston cores (3–5 m penetration) reveal the near-surface geology of the Bryant Canyon turbidite pathway on the continental margin of Louisiana. This pathway extends from the continental shelf edge, across the continental slope, to a deep-sea fan on the continental rise. The...