Conference Papers
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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.
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Dispersion of adult Cancer magister at Glacier Bay, Alaska: Variation with spatial scale, sex, and reproductive status Dispersion of adult Cancer magister at Glacier Bay, Alaska: Variation with spatial scale, sex, and reproductive status
Patterns of micro- to mesoscale distribution of Dungeness crabs (Cancer magister) in nearshore habitats at five locations in and near Glacier Bay National Park were revealed using subtidal transects. Sampling was conducted in April and September 1992 and 1993 and April 1994. Divers censused crabs by sex and reproductive status (ovigerous/nonovigerous females) along belt transects (2 m x...
Authors
Charles E. O’Clair, Thomas C. Shirley, S. James Taggart
Earthquake prediction: The interaction of public policy and science Earthquake prediction: The interaction of public policy and science
Earthquake prediction research has searched for both informational phenomena, those that provide information about earthquake hazards useful to the public, and causal phenomena, causally related to the physical processes governing failure on a fault, to improve our understanding of those processes. Neither informational nor causal phenomena are a subset of the other. I propose a...
Authors
L.M. Jones
Effect of a thiamine antagonist on blood thiamine levels in lake trout Effect of a thiamine antagonist on blood thiamine levels in lake trout
No abstract available at this time
Authors
E. Lee, D. C. Honeyfield
Effects of agricultural practices and vadose zone stratigraphy on nitrate concentration in ground water in Kansas, USA Effects of agricultural practices and vadose zone stratigraphy on nitrate concentration in ground water in Kansas, USA
Differences in nitrate-N concentrations in,around water in Kansas can be explained by variations in agricultural practices and vadose-zone stratigraphy. In northwestern Kansas, past use of a local stream for tailwater runoff from irrigation and high fertilizer applications for sugar-beet farming resulted in high nitrate-N concentrations (12-60 mg L-1; in both soil and ground water...
Authors
M.A. Townsend, R. O. Sleezer, S.A. Macko
Effects of supplementation with hatchery fish on carrying capacity and productivity of naturally spawning populations of steelhead Effects of supplementation with hatchery fish on carrying capacity and productivity of naturally spawning populations of steelhead
No abstract available
Authors
R.R. Reisenbichler
Experimental early-stage coalification of a peat sample and a peatified wood sample from Indonesia Experimental early-stage coalification of a peat sample and a peatified wood sample from Indonesia
Experimental coalification of a peat sample and a buried wood sample from domed peat deposits in Indonesia was carried out to examine chemical structural changes in organic matter during early-stage coalification. The experiment (125 C, 408 atm lithostatic pressure, and 177 atm fluid pressure for 75 days) was designed to maintain both lithostatic and fluid pressure on the sample, but...
Authors
W. H. Orem, S.G. Neuzil, H.E. Lerch, C. B. Cecil
Frequency analyses for recent regional floods in the United States Frequency analyses for recent regional floods in the United States
During 1993-95, significant floods that resulted in record-high river stages, loss of life, and significant property damage occurred in the United States. The floods were caused by unique global weather patterns that produced large amounts of rain over large areas. Standard methods for flood-frequency analyses may not adequately consider the probability of recurrence of these global...
Authors
Nick B. Melcher, Patsy G. Martinez
Geology and geothermal potential of Alid volcanic center, Eritrea, Africa Geology and geothermal potential of Alid volcanic center, Eritrea, Africa
Alid volcanic center, a 700-meter-tall mountain in Eritrea, northeast Africa, straddles the axis of an active crustal-spreading center called the Danakil Depression. Boiling-temperature fumaroles are common on Alid, and their gas compositions indicate a reservoir temperature of at least 250 ??C. The history of volcanism and the high reservoir temperature indicated by the Alid fumarole...
Authors
Michael A. Clynne, Wendell A. Duffield, Robert O. Fournier, Leake W. Giorgis, Cathy J. Janik, Gabreab Kahsai, Jacob Lowenstern, Kidane W. Mariam, James G. Smith, Theoderos Tesfai
Historical perspectives on riparian ecosystems of Colorado Historical perspectives on riparian ecosystems of Colorado
No abstract available.
Authors
M. L. Scott, J.M. Friedman, G.T. Auble, P. Anderson
How many seabirds were killed by the Exxon Valdez Oil Spill? How many seabirds were killed by the Exxon Valdez Oil Spill?
After the Exxon Valdez oil spill of 24 March 1989, 36,115 dead seabirds were recovered from beaches and processed at morgues. Most or all of 1,888 live oiled seabirds brought to rehabilitation centers also died and about 3,260 oiled carcasses were never delivered to morgues. Of these 41,263 carcasses accounted for, we estimated conservatively that only 30,000 were killed by oil pollution...
Authors
John F. Piatt, R. Glenn Ford
Identification of organic compounds in the water of a fish culture system Identification of organic compounds in the water of a fish culture system
No abstract available at this time
Authors
J. Bonzo, D. C. Honeyfield
Impact of dia- and catagenesis on sulphur and oxygen sequestration of biomarkers as revealed by artificial maturation of an immature sedimentary rock Impact of dia- and catagenesis on sulphur and oxygen sequestration of biomarkers as revealed by artificial maturation of an immature sedimentary rock
Hydrous pyrolysis of an immature (R(a)??? 0.25%) sulphur-rich marl from the Gessoso-solfifera Formation (Messinian) in the Vena del Gesso Basin was carried out at 160C ??? T ???330 C for 72 h, to study the effect of progressive diagenesis and early catagenesis on the abundance and distribution of sulphur-containing and sulphur- and oxygen-linked carbon skeletons in low-molecular-weight...
Authors
M.P. Koopmans, J. W. De Leeuw, M. D. Lewan, Damste J.S. Sinninghe