Conference Papers
Science Quality and Integrity
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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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Global climate change: USFWS coastal research Global climate change: USFWS coastal research
Scenarios of global climate change are still ambiguous; however, increasing sea level and atmospheric carbon dioxide (CO2) concentrations seem certain, although rates of change are still being debated. Predictions for other aspects of climate change, such as temperature, tropical storm frequency and intensity, and precipitation, are still in debate, and all predictions for local (e.g...
Authors
Janet R. Keough, Thomas W. Doyle, Robert E. Stewart
Remote sensing of water quality Remote sensing of water quality
Water property data were collected within 3 cooling water reservoirs (active to inactive, large [1,068 ha] to small [68.6 ha]. oligotrophic to eutrophic) at 31 locations. A description of the water characteristics was obtained including algal pigments, total suspended particles, dissolved and particulate organic matter, and total particle absorption spectra. Field data included generated...
Authors
Elijah Ramsey III, John R. Jensen
Geochemical evolution of acidic ground water at a reclaimed surface coal mine in western Pennsylvania Geochemical evolution of acidic ground water at a reclaimed surface coal mine in western Pennsylvania
Concentrations of dissolved sulfate and acidity in ground water increase downflow in mine spoil and underlying bedrock at a reclaimed surface coal mine in the bituminous field of western Pennsylvania. Elevated dissolved sulfate and negligible oxygen in ground water from bedrock about 100 feet below the water table suggest that pyritic sulfur is oxidized below the water table, in a system...
Authors
Charles A. Cravotta
The distribution of seabirds and fish in relation to ocean currents in the southeastern Chukchi Sea The distribution of seabirds and fish in relation to ocean currents in the southeastern Chukchi Sea
In late August 1988, we studied the distribution of seabirds in the southeastern Chukchi Sea, particularly in waters near a major seabird colony at Cape Thompson. Foraging areas were characterized using hydrographic data obtained from hydroacoustic surveys for fish. Murres (Uria spp.) and Black-legged Kitttiwakes Rissa tridactyla breeding at Cape Thompson fed mostly on Arctic cod, which...
Authors
John F. Piatt, John L. Wells, Andrea MacCharles, Brian S. Fadely
The West Antarctic rift system, a propagating rift "captured" by a mantle plume The West Antarctic rift system, a propagating rift "captured" by a mantle plume
The West Antarctic rift system, marked by a 3-5-kilometer high shoulder from northern Victoria Land to the Ellsworth Mountains, extends through the Ross Embayment and the Byrd Subglacial Basin. Geophysical data suggest that the ice covered area beneath the rift zone is underlain by Cenozoic volcanic rocks (flood basalts?), and extended crust about 20 km thick. Exposed bimodal alkaline...
Authors
John C. Behrendt, W.E. LeMasurier, Alan K. Cooper
Geographic and seasonal distribution of herbicides in streams of the midwestern United States Geographic and seasonal distribution of herbicides in streams of the midwestern United States
No abstract available.
Authors
D. A. Goolsby, E.M. Thurman, D.W. Kolpin
Ground water impacts from irrigated ridge tillage Ground water impacts from irrigated ridge tillage
No abstract available.
Authors
H. W. Anderson, R.H. Dowdy, G. N. Delin
Proposed U.S. Geological Survey standard for digital orthophotos Proposed U.S. Geological Survey standard for digital orthophotos
No abstract available.
Authors
David Hooper, Vincent Caruso
Regional side-scan sonar swath mapping: A tool for environmental monitoring Regional side-scan sonar swath mapping: A tool for environmental monitoring
No abstract available.
Authors
H. A. Karl, William C. Schwab
Methodology for predictive GIS mapping of special study zones for strong ground shaking in the San Francisco Bay region, California Methodology for predictive GIS mapping of special study zones for strong ground shaking in the San Francisco Bay region, California
No abstract available.
Authors
Roger D. Borcherdt, Carl M. Wentworth, A. Janssen, T. Fumal, J. Gibbs
Application of GIS technology to seismic zonation of the San Francisco Bay region, California Application of GIS technology to seismic zonation of the San Francisco Bay region, California
No abstract available.
Authors
Carl M. Wentworth, Roger D. Borcherdt, T.T. Fitzgibbon, P. K. Showalter
Comparative observation of soil amplification from long-period micro tremor and earthquake recordings for seismic microzonation Comparative observation of soil amplification from long-period micro tremor and earthquake recordings for seismic microzonation
No abstract available.
Authors
Hiroyuki Kameda, Mehmet Celebi, Roger D. Borcherdt, Junpei Akamatsu, M. Fujita