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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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. Carcass
Authors
John F. Piatt, R. Glenn Ford
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
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 and highmol
Authors
M.P. Koopmans, J. W. De Leeuw, M. D. Lewan, Damste J.S. Sinninghe
Implications of fault constitutive properties for earthquake prediction
The rate- and state-dependent constitutive formulation for fault slip characterizes an exceptional variety of materials over a wide range of sliding conditions. This formulation provides a unified representation of diverse sliding phenomena including slip weakening over a characteristic sliding distance D(c), apparent fracture energy at a rupture front, time- dependent healing after rapid slip, an
Authors
J.H. Dieterich, B. Kilgore
Interpreting the ASTM 'content standard for digital geospatial metadata'
ASTM and the Federal Geographic Data Committee have developed a content standard for spatial metadata to facilitate documentation, discovery, and retrieval of digital spatial data using vendor-independent terminology. Spatial metadata elements are identifiable quality and content characteristics of a data set that can be tied to a geographic location or area. Several Office of Management and Budge
Authors
Douglas D. Nebert
Localized alteration of the paintbrush nonwelded hydrologic unit within the exploratory studies facility
The mound-like feature in the lower part of the PTn, composed of highly disrupted strata and open-system alteration were the result of intense water-rock interaction. This feature was formed by fumarolic activity during cooling of the 12.8 Ma Topopah Spring Tuff and prior to deposition of the pre-Pah Canyon bedded tuff. Evidence of vapor phase crystallization, commonly observed in fumaroles, is no
Authors
Z. E. Peterman, R.W. Spengler, F.R. Singer, S.C. Beason
Market value of asteroidal precious metals in an age of diminishing terrestrial resources
In the next century Mankind may have to choose from two options for our supply and usage of some nonrenewable natural resources, such as gold, platinum metals, and fossil fuels: learn to live with diminishing supplies of these materials obtained at ever increasing economic and environmental cost, or reach into difficult places and develop new technologies to give us what we need to sustain economi
Authors
Jeffrey S. Kargel
Meeting summary - Coastal meteorology and oceanography: Report of the third prospectus development team of the U.S. Weather Research Program to NOAA and NSF
U.S. Weather Research Program (USWRP) prospectus development teams (PDTs) are small groups of scientists that are convened by the USWRP lead scientist on a one-time basis to discuss critical issues and to provide advice related to future directions of the program. PDTs are a principal source of information for the Science Advisory Committee, which is a standing committee charged with the duty of m
Authors
R. Rotunno, L.J. Pietrafesa, J. S. Allen, B.R. Colman, C.M. Dorman, C.W. Kreitzberg, S.J. Lord, M.G. McPhee, G.L. Mellor, C.N.K. Mooers, P.P. Niiler, R.A. Pielke, M.D. Powell, D.P. Rogers, J.D. Smith, Lingtian Xie, R. Carbone
Modeling the periodic stratification and gravitational circulation in San Francisco Bay, California
A high resolution, three-dimensional (3-D) hydrodynamic numerical model is applied to San Francisco Bay, California to simulate the periodic tidal stratification caused by tidal straining and stirring and their long-term effects on gravitational circulation. The numerical model is formulated using fixed levels in the vertical and uniform computational mesh on horizontal planes. The governing conse
Authors
Ralph T. Cheng, Vincenzo Casulli
Modern Pearl River Delta and Permian Huainan coalfield, China: A comparative sedimentary facies study
Sedimentary facies types of the Pleistocene deposits of the Modern Pearl River Delta in Guangdong Province, China and Permian Member D deposits in Huainan coalfield in Anhui Province are exemplified by depositional facies of anastomosing fluvial systems. In both study areas, sand/sandstone and mud/mudstone-dominated facies types formed in diverging and converging, coeval fluvial channels laterally
Authors
P. Suping, R. M. Flores
Natural hazard zonation
This paper presents the basic scientific principles underpinning the professional practice of zonation for natural hazards such as floods, severe storms, earthquakes, volcanic eruptions, landslides, wildfires, tsunamis, and droughts. Zonation is the scientific process of identifying those parts of a geographic area which are best and least suited for community development in terms of their exposur
Authors
Walter W. Hays
Near bottom velocity measurements in San Francisco Bay, California
The ability to accurately measure long-term time-series of tidal currents in bays and estuaries is critical in estuarine hydrodynamic studies. Accurate measurements of tidal currents near the air-water interface and in the bottom boundary layer remain difficult in spite of the significant advances in technology for measuring tidal currents which have been achieved in recent years. One of the objec
Authors
Jeffrey W. Gartner, Ralph T. Cheng