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.
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Absence of risk associated with movement of processed rainbow trout from an area where infectious hematopoietic necrosis virus is endemic Absence of risk associated with movement of processed rainbow trout from an area where infectious hematopoietic necrosis virus is endemic
Abstract not available
Authors
S. LaPatra, W. Batts, G. Jones, W. Shewmaker, J. Winton
Automated ground-water monitoring with robowell-Case studies and potential applications Automated ground-water monitoring with robowell-Case studies and potential applications
Robowell is an automated system and method for monitoring ground-water quality. Robowell meets accepted manual-sampling protocols without high labor and laboratory costs. Robowell periodically monitors and records water-quality properties and constituents in ground water by pumping a well or multilevel sampler until one or more purge criteria have been met. A record of frequent water...
Authors
G.E. Granato, K.P. Smith
Biodegradation of MTBE by indigenous aquifer microorganisms under artificial oxic conditions Biodegradation of MTBE by indigenous aquifer microorganisms under artificial oxic conditions
Oxygen in the form of a metal peroxide slurry (MgO2 and water) was added to an anoxic part of a gasoline-contaminated aquifer in South Carolina to test the hypothesis that artificial oxic conditions will lead to MTBE biodegradation by indigenous microorganisms in anoxic, gasoline-contaminated aquifers. The slurry slowly released dissolved oxygen upon hydrolysis with groundwater, and was...
Authors
J. E. Landmeyer, P. M. Bradley
Biophysical monitoring of a tidal salt marsh rehabilitation in the San Francisco Bay estuary Biophysical monitoring of a tidal salt marsh rehabilitation in the San Francisco Bay estuary
No abstract available at this time
Authors
S.J. Emerson, M.A. Bias, G.T. Downard, John Y. Takekawa
Changes in flow in the upper North Canadian river basin of western Oklahoma, pre-development to 2000 Changes in flow in the upper North Canadian river basin of western Oklahoma, pre-development to 2000
Water levels have declined in the southern part of the High Plains aquifer of the central USA since the mid-1960s in response to extensive irrigation development. The North Canadian River originates in western Oklahoma, and most of the basin is underlain by the High Plains aquifer. Average river flow in the headwaters near Guymon, Oklahoma, has decreased from about 0.9 m3/s before 1970...
Authors
K.L. Wahl
Coal bed sequestration of carbon dioxide Coal bed sequestration of carbon dioxide
Geologic sequestration of CO2 generated from fossil fuel combustion may be an environmentally attractive method to reduce the amount of greenhouse gas emissions. Of the geologic options, sequestering CO2 in coal beds has several advantages. For example, CO2 injection can enhance methane production from coal beds; coal can trap CO2 for long periods of time; and potential major coal basins...
Authors
Robert Stanton, Romeo M. Flores, Peter D. Warwick, Harold J. Gluskoter, Gary D. Stricker
Coal quality and resources in the U.S. Gulf Coastal Plain Coal quality and resources in the U.S. Gulf Coastal Plain
No abstract available.
Authors
Peter D. Warwick, John R. SanFilipo, Jason C. Willett
Coastline complexity: A parameter for functional classification of coastal environments Coastline complexity: A parameter for functional classification of coastal environments
To understand the role of the world's coastal zone (CZ) in global biogeochemical fluxes (particularly those of carbon, nitrogen, phosphorus, and sediments) we must generalise from a limited number of observations associated with a few well-studied coastal systems to the global scale. Global generalisation must be based on globally available data and on robust techniques for...
Authors
J.D. Bartley, R. W. Buddemeier, D.A. Bennett
Concentrations of organic compounds in bed sediment in the Mississippi Embayment study unit Concentrations of organic compounds in bed sediment in the Mississippi Embayment study unit
No Abstract Available.
Authors
Jeannie R. Bryson, Michelle L. Wates, Barbara A. Kleiss, Krisan L. Risher
Continuous automated sensing of streamflow density as a surrogate for suspended-sediment concentration sampling Continuous automated sensing of streamflow density as a surrogate for suspended-sediment concentration sampling
A newly refined technique for continuously and automatically sensing the density of a water-sediment mixture is being tested at a U.S. Geological Survey streamflow-gaging station in Puerto Rico. Originally developed to measure crude oil density, the double bubbler instrument measures fluid density by means of pressure transducers at two elevations in a vertical water column. By...
Authors
Matthew C. Larsen, Carlos Figueroa Alamo, John R. Gray, William Fletcher
Critical habitat for ovigerous Dungeness crabs Critical habitat for ovigerous Dungeness crabs
The Dungeness crab, Cancer magister, supports an important fishery in the northeastern Pacific Ocean, yet there is limited knowledge of ovigerous female brooding locations and brooding behavior. Our earlier research suggests that ovigerous crabs aggregate at the same brooding locations for many years. Within these locations, ovigerous females occur in high densities, with the majority of...
Authors
Karen Scheding, Thomas C. Shirley, Charles E. O’Clair, S. James Taggart
Demonstration and Field Evaluation of Streambank Stabilization with Submerged Vanes Demonstration and Field Evaluation of Streambank Stabilization with Submerged Vanes
The effectiveness of submerged vanes for reducing bank erosion and improving aquatic habitat is being evaluated at a site on North Fish Creek, a Lake Superior tributary. Increased runoff from agricultural areas with clayey soils has increased flood magnitudes and the erosion potential/transport capacity of the stream. Most of the creek's sediment load originates from the erosion of 17...
Authors
H. Whitman, J. Hoopes, D. Poggi, F. Fitzpatrick, K. Walz