Conference Papers
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Sources of acid and metals from the weathering of the Dinero waste pile, Lake Fork watershed, Leadville, Colorado Sources of acid and metals from the weathering of the Dinero waste pile, Lake Fork watershed, Leadville, Colorado
Two trenches were dug into the south Dinero mine-waste pile near Leadville, Colorado, to study the weathering of rock fragments and the mineralogic sources of metal contaminants in the surrounding wetland and Lake Fork Watershed. Water seeping from the base of the south Dinero waste-rock pile was pH 2.9, whereas leachate from a composite sample of the rock waste was pH 3.3. The waste...
Authors
S. F. Diehl, Phil L. Hageman, Kathleen S. Smith, J.T. Herron, G. A. Desborough
Using enzyme bioassays as a rapid screen for metal toxicity Using enzyme bioassays as a rapid screen for metal toxicity
Mine tailings piles and abandoned mine soils are often contaminated by a suite of toxic metals, which were released in the mining process. Traditionally, toxicity of such areas has been determined by numerous chemical methods including the Toxicity Characteristic Leachate Procedure (TCLP) and traditional toxicity tests using organisms such as the cladoceran Ceriodaphnia dubia. Such tests...
Authors
LaDonna M. Choate, P.E. Ross, E. P. Blumenstein, James F. Ranville
Pulsing and circulation in rip current system 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...
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 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 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...
Authors
Douglas H. Johnson, Jane E. Austin, Jill A. Shaffer
Wildlife disease in a changing world Wildlife disease in a changing world
No abstract available.
Authors
Milton Friend
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 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...
Authors
Roger D. Borcherdt, G. Glassmoyer, Christopher M. Dietel, R.E. Westerlund
A method for quantifying bioavailable organic carbon in aquifer sediments 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...
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 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 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...
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 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...
Authors
D. Einhouse, M. G. Walsh, S. Keeler, J.M. Long