Conference Papers
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
Filter Total Items: 5518
Impacts of the Asian Clam on San Francisco Bay, California Impacts of the Asian Clam on San Francisco Bay, California
No abstract available.
Authors
J.K. Thompson
Implications of new gravity data collected over the Wilkes Subglacial Basin, East Antarctica Implications of new gravity data collected over the Wilkes Subglacial Basin, East Antarctica
No abstract available.
Authors
R.I. Hackney, Uri S. ten Brink, S. Bannister, T.A. Stern
In-situ stress and fracture permeability in a fault-hosted geothermal reservoir at Dixie Valley, Nevada In-situ stress and fracture permeability in a fault-hosted geothermal reservoir at Dixie Valley, Nevada
As part of a study relating fractured rock hydrology to in-situ stress and recent deformation within the Dixie Valley Geothermal Field, borehole televiewer logging and hydraulic fracturing stress measurements were conducted in a 2.7-km-deep geothermal production well (73B-7) drilled into the Stillwater fault zone. Borehole televiewer logs from well 73B-7 show numerous drilling-induced...
Authors
Stephen Hickman, Colleen Barton, Mark Zoback, Roger Morin, John Sass, Richard Benoit
Isolation of thiaminase-producing bacteria from alewives Isolation of thiaminase-producing bacteria from alewives
No abstract available at this time
Authors
G. Watkins, D. C. Honeyfield
Lignin phenols in sediments of Lake Baikal, Siberia: Application to paleoenvironmental studies Lignin phenols in sediments of Lake Baikal, Siberia: Application to paleoenvironmental studies
Sediments from three cores obtained from distinct depositional environments in Lake Baikal, Siberia were analyzed for organic carbon, total nitrogen and lignin phenol concentration and composition. Results were used to examine changes in paleoenvironmental conditions during climatic cycles of the late Quaternary ( 125 ka). Average organic carbon, and total nitrogen concentrations, atomic...
Authors
W. H. Orem, Steven M. Colman, H.E. Lerch
Long time-series of turbid coastal water using AVHRR: An example from Florida Bay, USA Long time-series of turbid coastal water using AVHRR: An example from Florida Bay, USA
The AVHRR can provide information on the reflectance of turbid case II water, permitting examination of large estuaries and plumes from major rivers. The AVHRR has been onboard several NOAA satellites, with afternoon overpasses since 1981, offering a long time-series to examine changes in coastal water. We are using AVHRR data starting in December 1989, to examine water clarity in...
Authors
R. P. Stumpf, M.L. Frayer
Long-term changes in diets and populations of piscivorous birds and mammals in Prince William Sound, Alaska Long-term changes in diets and populations of piscivorous birds and mammals in Prince William Sound, Alaska
No abstract available.
Authors
K.J. Kuletz, D.B. Irons, B.A. Agler, John F. Piatt, D.C. Duffy
Long-term investigations provide fundamental insight into natural and human-induced change in the San Francisco Bay (U.S.A.) estuary Long-term investigations provide fundamental insight into natural and human-induced change in the San Francisco Bay (U.S.A.) estuary
No abstract available.
Authors
F.H. Nichols, S. N. Luoma
Long-term observations of migrating shore-normal bars Long-term observations of migrating shore-normal bars
A series of migrating shore-normal sandbars with wavelengths of 50-200 m and heights of 0.5-2 m have been identified off the northern tip of Anna Maria Island, a barrier island on the west-central Florida coast. Similar features have been described elsewhere since the 1930's and termed `transverse bars.' The transverse bars identified off Anna Maria Island are found for about 3 km along...
Authors
Guy Gelfenbaum, Gregg R. Brooks
Low shear stress gravel-bed river Low shear stress gravel-bed river
A low stress gravel bed river is a river where the cross-sectional average dimensionless shear stress (??*) rarely exceeds 0.047. That is the case for the Gunnison River below Delta in Western Colorado. The cross-sectional average ??* in the Gunnison River has not exceeded 0.047, except at one cross section during one year, in the 87 years of record. A ??* of 0.047 is the critical ??* in...
Authors
Robert T. Milhous
Low-rank coal formation in Poland and the United States: I. Zitau Basin, Poland Low-rank coal formation in Poland and the United States: I. Zitau Basin, Poland
No abstract available.
Authors
J.R. Kasinski, R. B. Finkelman, M. Piwocki, R.W. Stanton, Peter D. Warwick
Mapping the radon potential of the united states: Examples from the Appalachians Mapping the radon potential of the united states: Examples from the Appalachians
The geologic radon potential of the United States was recently assessed by the U.S. Geological Survey. Results indicate that approximately 33% of the U.S. population lives within geologic provinces where the average indoor radon levels have the potential to be greater than 4 pCi/L (147 Bq/m3). Rock types most commonly associated with high indoor radon include: 1) Uraniferous...
Authors
L.C.S. Gundersen, R.R. Schumann