Virginia H. Garrison
2000, Book
No abstract available....
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Publication Extents
Not all publications have extents, not all extents are completely accurateS.R. Ramireddygari, M.A. Sophocleous, J.K. Koelliker, S.P. Perkins, R.S. Govindaraju
2000, Journal of Hydrology (236) 223-246
This paper presents the results of a comprehensive modeling study of surface and groundwater systems, including stream-aquifer interactions, for the Wet Walnut Creek Watershed in west-central Kansas. The main objective of this study was to assess the impacts of watershed structures and irrigation water use on streamflow and groundwater levels,...
E. R. Landa, T.B. Councell
2000, Health Physics (79) 286-290
Much attention in the radiological health community has recently focused on the management and regulation of naturally occurring radioactive materials. Although uranium-bearing minerals are present in a variety of fluorspar deposits, their potential consideration as naturally occurring radioactive materials has received only limited recognition. The uranium content of...
Z.A. Malaeb, J.Kevin Summers, B.H. Pugesek
2000, Environmental and Ecological Statistics (7) 93-111
Structural equation modeling is an advanced multivariate statistical process with which a researcher can construct theoretical concepts, test their measurement reliability, hypothesize and test a theory about their relationships, take into account measurement errors, and consider both direct and indirect effects of variables on one another. Latent variables are theoretical...
C. T. Chiou
2000, Conference Paper, ACS Division of Environmental Chemistry, Preprints
[No abstract available]...
Jennifer T. McGuire, Erik W. Smith, David T. Long, David W. Hyndman, Sheridan K. Haack, Michael J. Klug, Michael A. Velbel
2000, Chemical Geology (169) 471-485
A fundamental issue in aquifer biogeochemistry is the means by which solute transport, geochemical processes, and microbiological activity combine to produce spatial and temporal variations in redox zonation. In this paper, we describe the temporal variability of TEAP conditions in shallow groundwater contaminated with both waste fuel and chlorinated solvents....
A. H. Sallenger Jr.
2000, Journal of Coastal Research (16) 890-895
A new scale is proposed that categorizes impacts to natural barrier islands resulting from tropical and extra-tropical storms. The proposed scale is fundamentally different than existing storm-related scales in that the coupling between forcing processes and the geometry of the coast is explicitly included. Four regimes, representing different levels of...
Steven R. Chipps, Lisa M. Einfalt, David H. Wahl
2000, Transactions of the American Fisheries Society (129) 186-193
We measured growth of age-0 tiger muskellunge as a function of ration size (25, 50, 75, and 100% Cmax) and water temperature (7.5–25°C) and compared experimental results with those predicted from a bioenergetic model. Discrepancies between actual and predicted values varied appreciably with water temperature and growth rate. On average,...
T.R. Carey, C. F. Richardson, R. Chang, F.B. Meserole, M. Rostam-Abadi, S. Chen
2000, Environmental Progress (19) 167-174
One promising approach for removing mercury from coal-fired, utility flue gas involves the direct injection of mercury sorbents. Although this method has been effective at removing mercury in municipal waste incinerators, tests conducted to date on utility coal-fired boilers show that mercury removal is much more difficult in utility flue...
I. Ferrer, F. Lanza, A. Tolokan, V. Horvath, B. Sellergren, G. Horvai, D. Barcelo
2000, Analytical Chemistry (72) 3934-3941
Two molecularly imprinted polymers were synthesized using either dichloromethane or toluene as the porogen and terbuthylazine as the template and were used as solid-phase extraction cartridges for the enrichment of six chlorotriazines (deisopropylatrazine, deethylatrazine, simazine, atrazine, propazine, and terbuthylazine) in natural water and sediment samples. The extracted samples were analyzed...
Thomas A. Dean, James L. Bodkin, Stephen C. Jewett, Daniel H. Monson, D. Jung
2000, Marine Ecology Progress Series (199) 281-291
Interactions between sea otters Enhydra lutris, sea urchins Strongylocentrotus droebachiensis, and kelp were investigated following the reduction in sea otter density in Prince William Sound, Alaska, after the Exxon Valdez oil spill in 1989. At northern Knight Island, a heavily oiled portion of the sound, sea otter abundance was reduced...
Frank E. Huggins, G.P. Huffman, A. Kolker, S. Mroczkowski, C.A. Palmer, R. B. Finkelman
2000, ACS Division of Fuel Chemistry, Preprints (45) 547-551
The speciation of arsenic in an Ohio bituminous coal and a North Dakota lignite has been examined by the complementary methods of arsenic XAFS spectroscopy and sequential extraction by aqueous solutions of ammonium acetate, HCl, HF, and HNO3. In order to facilitate a more direct comparison of the two methods,...
C. Knickerbocker, D. Kirk Nordstrom, G. Southam
2000, Book, Chemical Geology
Brimstone Basin, in southeastern Yellowstone National Park, Wyoming is an ancient hydrothermal area containing solfataric alteration. Drainage waters flowing from Brimstone Basin had pH values as low as 1.23 and contained up to 1.7×106 MPN/ml acidophilic sulfur-oxidizing bacteria. Thiobacillus thiooxidans was the dominant sulfur-oxidizing bacterium recovered from an enrichment culture...
A.M. Sarna-Wojcicki, M. S. Pringle, J. Wijbrans
2000, Journal of Geophysical Research B: Solid Earth (105) 21431-21443
Precise dating of sanidine from proximal ash flow Bishop Tuff and air fall Bishop pumice and ash, California, can be used to derive an absolute age of the Matuyama Reversed-Brunhes Normal (M-B) paleomagnetic transition, identified stratigraphically close beneath the Bishop Tuff and ash at many sites in the western United...
Michael D. Fleming, F. Stuart Chapin III, W. Cramer, Gary L. Hufford, Mark C. Serreze
2000, Global Change Biology (6) 49-58
Data from a sparse network of climate stations in Alaska were interpolated to provide 1-km resolution maps of mean monthly temperature and precipitation-variables that are required at high spatial resolution for input into regional models of ecological processes and resource management. The interpolation model is based on thin-plate smoothing splines,...
T.D. Lorenson
2000, Conference Paper, Annals of the New York Academy of Sciences
The presence of disseminated gas hydrate was inferred based on pore fluid geochemistry and downhole logging data, but was rarely observed at Ocean Drilling Program (ODP) Leg 164 (Blake Ridge), and Leg 170 (Middle America Trench, offshore from Costa Rica) drilling sites. Gas hydrate nucleation is likely to occur first...
W.H. Asquith, J.S. Famiglietti
2000, Journal of Hydrology (230) 55-69
The adjustment of precipitation depth of a point storm to an effective (mean) depth over a watershed is important for characterizing rainfall-runoff relations and for cost-effective designs of hydraulic structures when design storms are considered. A design storm is the precipitation point depth having a specified duration and frequency (recurrence...
T. Parsons, S. Toda, R.S. Stein, A. Barka, James H. Dieterich
2000, Science (288) 661-665
We calculate the probability of strong shaking in Istanbul, an urban center of 10 million people, from the description of earthquakes on the North Anatolian fault system in the Marmara Sea during the past 500 years and test the resulting catalog against the frequency of damage in Istanbul during the...
B. Voight, M.J. Davis
2000, Journal of Volcanology and Geothermal Research (100) 371-377
A study of emplacement temperatures was carried out for the largest of the 22 November 1994 nuée ardente deposits at Merapi Volcano, based mainly on the response of plastic and woody materials subjected to the hot pyroclastic current and the deposits, and to some extent on eyewitness observations. The study...
S.E. King, J.B. Grace
2000, Wetlands (20) 300-306
Cogongrass (Imperata cylindrica), an invasive perennial introduced from Southeast Asia, is currently spreading throughout the southeastern United States from Florida to Louisiana. In the U.S., cogongrass is generally not considered a wetland species, although it’s range is expanding in regions with high wetland abundance. The objective of this...
Kyle Joly
2000, Canadian Field-Naturalist (114) 322-323
Low sample size and high variation within populations reduce power of statistical tests. These aspects of statistical power appear to have affected an analysis comparing overwinter survival rates of non-orphan and orphan Caribou (Rangifer tarandus) calves by an earlier study for the Porcupine Caribou Herd. A re-evaluation of the data...
J.M. Bigham, D. Kirk Nordstrom
2000, Reviews in Mineralogy and Geochemistry (40) 351-403
Acid sulfate waters are produced mostly by the oxidation of common sulfide minerals such as pyrite, chalcopyrite, pyrrhotite, and marcasite in rocks, soils, sediments, and industrial wastes. This spontaneous process of mineral weathering plays a fundamental role in the supergene alteration of ore deposits, the formation of acid sulfate soils,...
M.A. Townsend, D.P. Young
2000, International Journal of Environmental Analytical Chemistry (78) 9-23
A survey of atrazine and its metabolites in Kansas ground water indicated that ground-water quality was impacted by stream-aquifer interaction between rivers in the Kansas River basin and their adjacent alluvial aquifers. Atrazine was detected in 19 of the 78 samples. The most common metabolite, deethylatrazine, was detected in 25...
J.L. Nielsen, Erika L. Heine, Christina A. Gan, Monique C. Fountain
2000, California Fish and Game (86) 21-40
Mitochondrial DNA (mtDNA) sequence and allelic frequency data for 12 microsatellite loci were used to analyze population genetic structure and recolonization by rainbow trout, Oncorhynchus mykiss, following the 1991 Cantara spill on the upper Sacramento River, California. Genetic analyses were performed on 1,016 wild rainbow trout collected between...
J. Pamic, M. Belak, T.D. Bullen, M. A. Lanphere, E.H. McKee
2000, Mineralogy and Petrology (68) 271-296
In this paper we present petrological and geochemical information on a bimodal basalt-rhyolite suite associated with A-type granites of Late Cretaceous age from the South Pannonian Basin in Slavonija (Croatia). Basalts and alkali-feldspar rhyolites, associated in some places with ignimbrites, occur in volcanic bodies that are interlayered with pyroclastic and...