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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A comparison of larval development in the zebra mussels, Dreissena polymorpha, (Bivalvia: Dreissenidae) up to the free-swimming trochophore stage in Tennessee and Ohio River water A comparison of larval development in the zebra mussels, Dreissena polymorpha, (Bivalvia: Dreissenidae) up to the free-swimming trochophore stage in Tennessee and Ohio River water
No abstract available.
Authors
D. P. Reed, J.J. Herod, J. B. Sickel
A fishy story about hurricanes and herbivory: Seven years of research on a reef in St. John, U.S. Virgin Islands A fishy story about hurricanes and herbivory: Seven years of research on a reef in St. John, U.S. Virgin Islands
No abstract available.
Authors
C. R. Rogers, Virginia H. Garrison, L. E. Grober-Dunsmore
A forage fish is what? Summary of the symposium A forage fish is what? Summary of the symposium
No abstract available.
Authors
Alan M. Springer, Suzann G. Speckman
A science-based, watershed strategy to support effective remediation of abandoned mine lands A science-based, watershed strategy to support effective remediation of abandoned mine lands
A U.S. Geological Survey Abandoned Mine Lands Initiative will develop a strategy for gathering and communicating the scientific information needed to formulate effective and cost-efficient remediation of abandoned mine lands. A watershed approach will identify, characterize, and remediate contaminated sites that have the most profound effect on water and ecosystem quality within a...
Authors
Herbert T. Buxton, David A. Nimick, Paul Von Guerard, Stan E. Church, Ann G. Frazier, John R. Gray, Bruce R. Lipin, Sherman P. Marsh, Daniel F. Woodward, Briant A. Kimball, Susan E. Finger, Lee S. Ischinger, John C. Fordham, Martha S. Power, Christine M. Bunch, John Jones
Aerial videography for estimating goose populations staging in Izembek Lagoon, Alaska Aerial videography for estimating goose populations staging in Izembek Lagoon, Alaska
We conducted experimental photographic surveys of black brant and Canada geese in a pre-migration staging area on the Alaska Peninsula to compare precision and efficiency of this technique to currently employed ocular estimates. Video and digital cameras sensitive to near infrared and visible radiation were tested at various altitudes and with lenses of different focal length. Using...
Authors
R.M. Anthony, R.A. Stehn, W.H. Anderson
Amplitude versus offset modeling of the bottom simulating reflection associated with submarine gas hydrates Amplitude versus offset modeling of the bottom simulating reflection associated with submarine gas hydrates
A bottom simulating seismic reflection (BSR) that parallels the sea floor occurs worldwide on seismic profiles from outer continental margins. The BSR coincides with the base of the gas hydrate stability field and is commonly used as indicator of natural submarine gas hydrates. Despite the widespread assumption that the BSR marks the base of gas hydrate-bearing sediments, the occurrence...
Authors
K. Andreassen, P. E. Hart, M. MacKay
An experimental design for examining the influence on environmental factors on downstream migratory behavior An experimental design for examining the influence on environmental factors on downstream migratory behavior
No abstract available at this time
Authors
G.P. Barbin, S. D. McCormick, A.J. Haro
An on-line diagnostic wind model applied to the San Francisco Bay region An on-line diagnostic wind model applied to the San Francisco Bay region
No abstract available.
Authors
R. T. Cheng, J. Feinstein, F. Ludwig, D. M. Sinton
Automated, reproducible delineation of zones at risk from inundation by large volcanic debris flows Automated, reproducible delineation of zones at risk from inundation by large volcanic debris flows
Large debris flows can pose hazards to people and property downstream from volcanoes. We have developed a rapid, reproducible, objective, and inexpensive method to delineate distal debris-flow hazard zones. Our method employs the results of scaling and statistical analyses of the geometry of volcanic debris flows (lahars) to predict inundated valley cross-sectional areas (A) and...
Authors
Steve P. Schilling, Richard M. Iverson
Characterisation of physical environmental factors on an intertidal sandflat, Manukau Harbour, New Zealand Characterisation of physical environmental factors on an intertidal sandflat, Manukau Harbour, New Zealand
Physical environmental factors, including sediment characteristics, inundation time, tidal currents and wind waves, likely to influence the structure of the benthic community at meso-scales (1-100 m) were characterised for a sandflat off Wiroa Island (Manukau Harbour, New Zealand). In a 500 x 250 m study site, sediment characteristics and bed topography were mostly homogenous apart from...
Authors
R.G. Bell, T.M. Hume, T.J. Dolphin, M.O. Green, R. A. Walters
Cometabolic biodegradation of trichloroethylene in microcosms Cometabolic biodegradation of trichloroethylene in microcosms
Laboratory microcosms were used to determine the concentrations of oxygen (O2) and methane (CH4) that optimize trichloroethylene (TCE) biodegradation in sediment and ground-water samples from a TCE-contaminated aquifer at Picatinny Arsenal, Morris County, New Jersey. The mechanism for degradation is the cometabolic activity of methanotrophic bacteria. The laboratory data will be used to...
Authors
Allen C. Kane, Timothy P. Wilson, Jeffrey M. Fischer
Coordination and standardization of federal sedimentation activities Coordination and standardization of federal sedimentation activities
In August 1964, the Bureau of the Budget issued Circular A-67 to set forth guidelines for the coordination of water-data acquisition activities throughout the Federal government. The U.S. Department of the Interior was assigned the task of implementing Circular A-67, which in turn redelegated this responsibility to the U.S. Geological Survey (USGS). Delegation of the lead responsibility...
Authors
G. Douglas Glysson, John R. Gray