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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Pulsing and circulation in rip current system
Current pulsations from a longshore bar and trough rip system located on the eastern coast of Moreton Island, Australia are presented. These pulsations occur over 10-20minute intervals through the rip system and are correlated to both water level gradients and wave energy variations. The field measurements suggest that rip current pulsations can be driven by fluctuating mass transport over the sho
Authors
D. P. Callaghan, T. E. Baldock, P. Nielsen, D.M. Hanes, K. Haas, J. MacMahan
Recent changes toward earlier springs---early signs of climate warming in western North America
No abstract available.
Authors
D. Cayan, M. Dettinger, I. Stewart, N. Knowles
A fresh look at the taxonomy of midcontinental sandhill cranes
The midcontinental population of sandhill crane (Grus canadensis) includes about 500,000 birds and provides valuable recreational crane-watching and hunting opportunities in Canada and the United States. It comprises three subspecies, one of which (G. c. rowani) was of uncertain taxonomic status and another of which (G. c. tabida) merited protection from excessive harvest due to its small populati
Authors
Douglas H. Johnson, Jane E. Austin, Jill A. Shaffer
Integrated surface and borehole strong-motion, soil-response arrays in San Francisco, California: Empirical measurements of low-strain site coefficients at site class E and D soil sites
An integrated set of four borehole arrays and ten surface installations is installed in the city of San Francisco, California to measure the response of soft-soil deposits to strong earthquake ground motions. The borehole arrays extend through thick layers of soft water-saturated soils of Holocene age and older more consolidated soils of Pleistocene age into bedrock at depths up to 90 m. The surfa
Authors
Roger D. Borcherdt, G. Glassmoyer, Christopher M. Dietel, R.E. Westerlund
A long-term (50 yr) historical perspective on flood-generating winter storms in the American River basin
No abstract available.
Authors
M. D. Dettinger
A method for quantifying bioavailable organic carbon in aquifer sediments
The fact that naturally occurring microorganisms can biodegrade PCE and TCE allows the use of monitored natural attenuation (MNA) as a remediation strategy at chlorinated solvent-contaminated sites. Research at numerous chlorinated solvent sites indicates an active dechlorinating microbial population coupled with an ample supply of organic carbon are conditions needed to sustain reductive dechlori
Authors
H.V. Rectanus, M. Widdowson, J. Novak, F. Chapelle
A preliminary evaluation of nutrient and ground-water fluxes to the Neuse River Estuary, North Carolina
No abstract available.
Authors
Timothy B. Spruill, John F. Bratton, John Crusius, Beth M. Wrege, G. Strickland
Adsorption in single-walled carbon nanotubes by experiments and molecular simulation II: Effect of morphology and temperature on organic adsorption
Hexane adsorption on single-walled carbon nanotube (SWNT) bundles was studied. Hexane adsorption capacities of two purified SWNT samples was gravimetrically determined at isothermal conditions of 25??, 37??, and 50??C for 10-4 < p/po < 0.9, where p/po is hexane vapor pressure relative to its saturation pressure. Simulation of hexane adsorption under similar temperature and pressure conditions were
Authors
S. Agnihotri, M. Rostam-Abadi, J.P.B. Mota, M.J. Rood
American Fisheries Society 136th Annual Meeting Lake Placid, NY 10-14 September, 2006
The New York Chapter of the American Fisheries Society and the New York State Department of Environmental Conservation invite you to experience the beauty of New York's famous Adirondack Park as the American Fisheries Society (AFS) convenes its 136th Annual Meeting in the legendary Olympic Village of Lake Placid, NY, 10-14 September 2006. Our meeting theme "Fish in the Balance" will explore the in
Authors
D. Einhouse, M. G. Walsh, S. Keeler, J.M. Long
Analysis of real-time vibration data
In recent years, a few structures have been instrumented to provide continuous vibration data in real time, recording not only large-amplitude motions generated by extreme loads, but also small-amplitude motions generated by ambient loads. The main objective in continuous recording is to track any changes in structural characteristics, and to detect damage after an extreme event, such as an earthq
Authors
E. Şafak
Analyzing indicators of stream health for Minnesota streams
Recent research has emphasized the importance of using physical, chemical, and biological indicators of stream health for diagnosing impaired watersheds and their receiving water bodies. A multidisciplinary team at the University of Minnesota is carrying out research to develop a stream classification system for Total Maximum Daily Load (TMDL) assessment. Funding for this research is provided by t
Authors
U. Singh, M. Kocian, B. Wilson, A. Bolton, J. Nieber, B. Vondracek, J. Perry, J. Magner