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Page 1019, results 25451 - 25475

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Remote sensing characterization of the Animas River watershed, southwestern Colorado, by AVIRIS imaging spectroscopy
J.B. Dalton, D. J. Bove, C.S. Mladinich
2005, Scientific Investigations Report 2004-5203
Visible-wavelength and near-infrared image cubes of the Animas River watershed in southwestern Colorado have been acquired by the Jet Propulsion Laboratory's Airborne Visible and InfraRed Imaging Spectrometer (AVIRIS) instrument and processed using the U.S. Geological Survey Tetracorder v3.6a2 implementation. The Tetracorder expert system utilizes a spectral reference library containing more...
Arsenic in ground water in selected parts of southwestern Ohio, 2002-03
Mary Ann Thomas, Thomas L. Schumann, Bruce A. Pletsch
2005, Scientific Investigations Report 2005-5138
Arsenic concentrations were measured in 57 domestic wells in Preble, Miami, and Shelby Counties, in southwestern Ohio. The median arsenic concentration was 7.1 ?g/L (micrograms per liter), and the maximum was 67.6 ?g/L. Thirty-seven percent of samples had arsenic concentrations greater than the U.S. Environmental Protection Agency drinking-water standard of...
Hydrogeologic setting and conceptual hydrologic model of the Spring Creek Basin, Centre County, Pennsylvania, June 2005
John W. Fulton, Edward H. Koerkle, Steven D. McAuley, Scott A. Hoffman, Linda F. Zarr
2005, Scientific Investigations Report 2005-5091
The Spring Creek Basin, Centre County, Pa., is experiencing some of the most rapid growth and development within the Commonwealth. This trend has resulted in land-use changes and increased water use, which will affect the quantity and quality of stormwater runoff, surface water, ground water, and aquatic resources within the...
Hydrologic response in karstic-ridge wetlands to rainfall and evapotranspiration, central Florida, 2001-2003
Leel Knowles Jr., G. G. Phelps, Sandra L. Kinnaman, Edward R. German
2005, Scientific Investigations Report 2005-5178
Two internally drained karstic wetlands in central Florida-Boggy Marsh at the Hilochee Wildlife Management Area and a large unnamed wetland at the Lyonia Preserve-were studied during 2001-03 to gain a better understanding of the net-recharge function that these wetlands provide, the significance of exchanges with ground water with regard to...
Water-quality trend analysis and sampling design for streams in the Red River of the North Basin, Minnesota, North Dakota, and South Dakota, 1970-2001
Aldo V. Vecchia
2005, Scientific Investigations Report 2005-5224
The Bureau of Reclamation is considering several alternatives to meet the future municipal, rural, and industrial water-supply needs in the Red River of the North (Red River) Basin, and an environmental impact statement is being prepared to evaluate the potential effects of the various alternatives on the water quality and...
Assessment of a model of forest dynamics under contrasting climate and disturbance regimes in the Pacific Northwest [FORCLIM]
Richard T. Busing, Allen M. Solomon
2005, Scientific Investigations Report 2005-5242
An individual-based model of forest dynamics (FORCLIM) was tested for its ability to simulate forest composition and structure in the Pacific Northwest region of North America. Simulation results across gradients of climate and disturbance were compared to forest survey data from several vegetation zones in western Oregon. Modelled patterns of...
Age and quality of ground water and sources of nitrogen in the surficial aquifers in Pumpkin Creek Valley, western Nebraska, 2000
G. V. Steele, J. C. Cannia, S. S. Sibray, V. L. McGuire
2005, Scientific Investigations Report 2005-5157
Ground water is the source of drinking water for the residents of Pumpkin Creek Valley, western Nebraska. In this largely agricultural area, shallow aquifers potentially are susceptible to nitrate contamination. During the last 10 years, ground-water levels in the North Platte Natural Resources District have declined and contamination has become...
Instream flow characterization of upper Salmon River basin streams, central Idaho, 2004
Terry R. Maret, Jon Hortness, Douglas S. Ott
2005, Scientific Investigations Report 2005-5212
Anadromous fish populations in the Columbia River Basin have plummeted in the last 100 years. This severe decline led to Federal listing of Chinook salmon (Oncorhynchus tshawytscha) and steelhead trout (Oncorhynchus mykiss) stocks as endangered or threatened under the Endangered Species Act (ESA) in the 1990s. Historically, the upper Salmon...
Historical development of the gravity method in exploration
M.N. Nabighian, M. E. Ander, V. J. S. Grauch, T.R. LaFehr, Y. Li, W. C. Pearson, J.W. Peirce, J. D. Phillips, M.E. Ruder
2005, Geophysics (70) 63ND-89ND
The gravity method was the first geophysical technique to be used in oil and gas exploration. Despite being eclipsed by seismology, it has continued to be an important and sometimes crucial constraint in a number of exploration areas. In oil exploration the gravity method is particularly applicable in salt provinces,...
Pattern-oriented modeling of agent-based complex systems: Lessons from ecology
Volker Grimm, Eloy Revilla, Uta Berger, Florian Jeltsch, Wolf M. Mooij, Steven F. Railsback, Hans-Hermann Thulke, Jacob Weiner, Thorsten Wiegand, Donald L. DeAngelis
2005, Science (310) 987-991
Agent-based complex systems are dynamic networks of many interacting agents; examples include ecosystems, financial markets, and cities. The search for general principles underlying the internal organization of such systems often uses bottom-up simulation models such as cellular automata and agent-based models. No general framework for designing, testing, and analyzing bottom-up...
Non-lethal estimation of body composition of Yukon River salmon
F. Joseph Margraf, Kyle J. Hartman, M. Keith Cox
2005, Report
Because of the importance of Chinook salmon to commercial and subsistence fisheries on the Yukon River, further study of the factors that may affect the success of this species and our ability to manage the fisheries is warranted. Critical to these studies is the determination of the amount of lipids...
Hydrogeology and simulation of source areas of water to production wells in a colluvium-mantled carbonate-bedrock aquifer near Shippensburg, Cumberland and Franklin Counties, Pennsylvania
Bruce D. Lindsey
2005, Scientific Investigations Report 2005-5195
This report presents the results of a study by the U.S. Geological Survey in cooperation with the Shippensburg Borough Authority to evaluate the source areas of water to production wells in a colluvium-mantled carbonate-bedrock aquifer in Cumberland and Franklin Counties, Pa. The areal extent of the zone of contribution was...
Hydrogeologic setting, ground-water flow, and ground-water quality at the Lake Wheeler Road research station, 2001-03 : North Carolina Piedmont and Mountains Resource Evaluation Program
Melinda J. Chapman, Richard E. Bolich, Brad A. Huffman
2005, Scientific Investigations Report 2005-5166
Results of a 2-year field study of the regolith-fractured bedrock ground-water system at the Lake Wheeler Road research station in Wake County, North Carolina, indicate both disconnection and interaction among components of the ground-water system. The three components of the ground-water system include (1) shallow, porous regolith; (2) a transition...
Triggering of tsunamigenic aftershocks from large strike‐slip earthquakes: Analysis of the November 2000 New Ireland earthquake sequence
Eric L. Geist, Tom Parsons
2005, Geochemistry, Geophysics, Geosystems (6)
[1] The November 2000 New Ireland earthquake sequence started with a Mw = 8.0 left‐lateral main shock on 16 November and was followed by a series of aftershocks with primarily thrust mechanisms. The earthquake sequence was associated with a locally damaging tsunami on the islands of New Ireland and nearby New Britain,...
Coastal-change and glaciological map of the Ronne Ice Shelf area, Antarctica, 1974-2002
Jane G. Ferrigno, K.M. Foley, C. Swithinbank, R.S. Williams Jr., L.M. Dalide
2005, IMAP 2600-D
Changes in the area and volume of polar ice sheets are intricately linked to changes in global climate, and the resulting changes in sea level may severely impact the densely populated coastal regions on Earth. Melting of the West Antarctic part alone of the Antarctic ice sheet could cause a...
Simulation of flow and sediment transport in the white sturgeon spawning habitat of the Kootenai River near Bonners Ferry, Idaho
Charles Berenbrock, James P. Bennett
2005, Scientific Investigations Report 2005-5173
Characterization of sediment transport of the Kootenai River in the white sturgeon spawning reach is needed by the Kootenai River White Sturgeon Recovery Team to predict sediment-transport conditions that improve spawning conditions for the white sturgeon (Acipenser transmontanus) in the Kootenai River near Bonners Ferry, Idaho. The decreasing population and...
Hydraulic characterization of overpressured tuffs in central Yucca Flat, Nevada Test Site, Nye County, Nevada
Keith J. Halford, Randell J. Laczniak, Devin L. Galloway
2005, Scientific Investigations Report 2005-5211
A sequence of buried, bedded, air-fall tuffs has been used extensively as a host medium for underground nuclear tests detonated in the central part of Yucca Flat at the Nevada Test Site. Water levels within these bedded tuffs have been elevated hundreds of meters in areas where underground nuclear tests...
Implications for prediction and hazard assessment from the 2004 Parkfield earthquake
W. H. Bakun, Brad T. Aagaard, B. Dost, William L. Ellsworth, Jeanne L. Hardebeck, Ruth A. Harris, C. Ji, Malcolm J. S. Johnston, John O. Langbein, James J. Lienkaemper, Andrew J. Michael, Jessica R. Murray, R.M. Nadeau, P.A. Reasenberg, M.S. Reichle, Evelyn A. Roeloffs, A. Shakal, Robert W. Simpson, F. Waldhauser
2005, Nature (437) 969-974
Obtaining high-quality measurements close to a large earthquake is not easy: one has to be in the right place at the right time with the right instruments. Such a convergence happened, for the first time, when the 28 September 2004 Parkfield, California, earthquake occurred on the San Andreas fault in...
Feasibility of using benthic invertebrates as indicators of stream quality in Hawaii
Reuben H. Wolff
2005, Scientific Investigations Report 2005-5079
Macroinvertebrates were collected from 19 sites on 14 streams on the island of Oahu and from 9 sites on 7 streams on the island of Kauai to evaluate associations between macroinvertebrate assemblages and environmental variables and to determine whether or not it would be feasible, in future studies, to develop...
National Acid Precipitation Assessment Program Report to Congress: An integrated assessment
Dallas Burtraw, Thomas Butler, Kenneth Colburn, C. Driscoll, David Grigal, editor(s)
2005, Report
Acid deposition, more commonly known as acid rain, occurs when emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) react in the atmosphere (with water, oxygen, and oxidants) to form various acidic compounds. These acidic compounds then fall to earth in either a wet form (rain, snow, and fog) or a dry form (gases, aerosols,...
Hydrology and water quality of lakes and streams in Orange County, Florida
Edward R. German, James C. Adamski
2005, Scientific Investigations Report 2005-5052
Orange County, Florida, is continuing to experience a large growth in population. In 1920, the population of Orange County was less than 20,000; in 2000, the population was about 896,000. The amount of urban area around Orlando has increased considerably, especially in the northwest part of the County. The eastern...
Questa baseline and premining ground-water quality investigation. 8. Lake-sediment geochemical record from 1960 to 2002, Eagle Rock and Fawn Lakes, Taos County, New Mexico
S. E. Church, D.L. Fey, M. E. Marot
2005, Scientific Investigations Report 2005-5006
Geochemical studies of lake sediment from Eagle Rock Lake and upper Fawn Lake were conducted to evaluate the effect of mining at the Molycorp Questa porphyry molybdenum deposit located immediately north of the Red River. Two cores were taken, one from each lake near the outlet where the sediment was...