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Page 2045, results 51101 - 51125

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Not all publications have extents, not all extents are completely accurate
Pliocene Invertebrates From the Travertine Point Outcrop of the Imperial Formation, Imperial County, California
Charles L. Powell II
2008, Scientific Investigations Report 2008-5155
Forty-four invertebrate taxa, including one coral, 40 mollusks (30 bivalves and 10 gastropods), and three echinoids are recognized from a thin marine interval of the Imperial Formation near Travertine Point, Imperial County, California. The Travertine Point outcrop lies about midway between exposures of the Imperial Formation around Palm Springs, Riverside...
The Significance of Accounting Order for Evapotranspiration and Recharge in Monthly and Daily Threshold-Type Water Budgets
Delwyn S. Oki
2008, Scientific Investigations Report 2008-5163
Most threshold-type water-budget models account for the loss of water by evapotranspiration before accounting for recharge. Recharge estimates can differ substantially, depending on whether recharge is counted before or after evapotranspiration in the water budget. This disparity is the source of uncertainty and is most pronounced for areas where soil-moisture...
Understanding contaminants associated with mineral deposits
Philip L. Verplanck
2008, Circular 1328
Interdisciplinary studies by the U.S. Geological Survey (USGS) have resulted in substantial progress in understanding the processes that controlthe release of metals and acidic water from inactive mines and mineralized areas,the transport of metals and acidic water to streams, andthe fate and effect of metals and acidity on downstream ecosystems.The...
Coastal circulation and sediment dynamics in Hanalei Bay, Kaua'i. Part IV: Measurements of waves, currents, temperature, salinity, and turbidity: June-September 2006
Curt D. Storlazzi, M. Katherine Presto, Joshua B. Logan, Michael E. Field
2008, Open-File Report 2008-1295
High-resolution measurements of waves, currents, water levels, temperature, salinity and turbidity were made in Hanalei Bay, northern Kaua'i, Hawai'i, during the summer of 2006 to better understand coastal circulation, sediment dynamics, and the potential impact of a river flood in a coral reef-lined embayment during quiescent summer conditions. A series...
Nutrient Loading and Algal Response in West Thompson Lake, Thompson, Connecticut, 2003-2005
Jonathan Morrison, Michael J. Colombo
2008, Scientific Investigations Report 2008-5072
Water quality and nutrient loads were characterized for parts of the Quinebaug River and West Thompson Lake in northeastern Connecticut during 2003 to 2005. The West Thompson Lake watershed is a mainly forested watershed that receives treated municipal wastewater from several point sources in Massachusetts. The lake is a flood-control...
Ground-Water Conditions and Studies in the Brunswick-Glynn County Area, Georgia, 2007
Gregory S. Cherry, John S. Clarke
2008, Open-File Report 2008-1297
The Upper Floridan aquifer is contaminated with saltwater in a 2-square-mile area of downtown Brunswick, Georgia. This contamination has limited the development of the ground-water supply in the Glynn County area. Hydrologic, geologic, and water-quality data are needed to effectively manage water resources. Since 1959, the U.S. Geological Survey has...
Water-Quality Characteristics of Ledge Creek and Holman Creek Upstream from Lake Rogers, Granville County, North Carolina, 2005 and 2008
Stephen L. Harden, Mary J. Giorgino
2008, Open-File Report 2008-1319
Water-quality and hydrologic data were collected during 2005 and 2008 to characterize potential source areas of nutrients and sediment within the Ledge and Holman Creek watersheds upstream from Lake Rogers in Granville County, North Carolina. Eight monitoring locations were established in all--five in Holman Creek and three in Ledge Creek--for...
Ground-water quality data in the San Fernando-San Gabriel study unit, 2005— Results from the California GAMA program
Michael Land, Kenneth Belitz
2008, Data Series 356
Ground-water quality in the approximately 460 square mile San Fernando-San Gabriel study unit (SFSG) was investigated between May and July 2005 as part of the Priority Basin Assessment Project of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The GAMA Priority Basin Assessment Project was developed in response to the...
Geophysical Logs, Aquifer Tests, and Water Levels in Wells in and Near the North Penn Area 7 Superfund Site, Upper Gwynedd Township, Montgomery County, Pennsylvania, 2002-2006
Lisa A. Senior, Randall W. Conger, Philip H. Bird
2008, Scientific Investigations Report 2008-5154
Ground water in the vicinity of several industrial facilities in Upper Gwynedd Township and Lansdale Borough, Montgomery County, Pa., is contaminated with several volatile organic compounds (VOCs). The 2-square-mile area was placed on the National Priorities List as the North Penn Area 7 Superfund Site by the U.S. Environmental Protection...
A Brief Test of the Tokyo Sokushin VSE-355G3 Strong Motion Velocity Seismometer
Charles R. Hutt, John R. Evans, Isamu Yokoi
2008, Open-File Report 2008-1311
The VSE-355G3 seismometer is a broadband seismometer (called a 'servo velocity meter' by Tokyo Sokushin) with a specified clip level of 2 m/s and a flat response to earth velocity from 0.008 Hertz (Hz) to 70 Hz. Mr. Yokoi and Mr. Kurahashi of Tokyo Sokushin shipped one instrument to the...
Isotope and Chemical Methods in Support of the U.S. Geological Survey Science Strategy, 2003-2008
R. O. Rye, C. A. Johnson, G. P. Landis, A. H. Hofstra, P. Emsbo, C. A. Stricker, A.G. Hunt, B.G. Rusk
2008, Fact Sheet 2008-3083
Principal functions of the Mineral Resources Program are providing information to decision-makers related to mineral deposits on federal lands and predicting the environmental consequences of the mining or natural weathering of those deposits. Performing these functions requires that predictions be made of the likelihood of undiscovered deposits. The predictions are...
Flood of June 7-9, 2008, in Central and Southern Indiana
Scott E. Morlock, Chad D. Menke, Donald V. Arvin, Moon H. Kim
2008, Open-File Report 2008-1322
On June 6-7, 2008, heavy rainfall of 2 to more than 10 inches fell upon saturated soils and added to already high streamflows from a wetter than normal spring in central and southern Indiana. The heavy rainfall resulted in severe flooding on many streams within the White River Basin during...
Assessment of gas hydrate resources on the North Slope, Alaska, 2008
Timothy S. Collett, Warren F. Agena, Myung W. Lee, Margarita V. Zyrianova, Kenneth J. Bird, Ronald R. Charpentier, Troy Cook, David W. Houseknecht, Timothy R. Klett, Richard M. Pollastro, Christopher J. Schenk
2008, Fact Sheet 2008-3073
The U.S. Geological Survey (USGS) recently completed the first assessment of the undiscovered technically recoverable gas-hydrate resources on the North Slope of Alaska. Using a geology-based assessment methodology, the USGS estimates that there are about 85 trillion cubic feet (TCF) of undiscovered, technically recoverable gas resources within gas hydrates in...
Streamflow conditions in the Guadalupe River Basin, south-central Texas, water years 1987-2006— An assessment of streamflow gains and losses and relative contribution of major springs to streamflow
Darwin J. Ockerman, Richard N. Slattery
2008, Scientific Investigations Report 2008-5165
The U.S. Geological Survey, in cooperation with the Edwards Aquifer Authority, assessed available streamflow data in the Guadalupe River Basin to determine streamflow gains and losses and the relative contribution of flow from major springs - Comal Springs, San Marcos Springs, and Hueco Springs - to streamflow in reaches of...
Dynamics of magma supply to Kilauea volcano, Hawai‘i: Integrating seismic, geodetic and eruption data
Thomas L. Wright, F. W. Klein
2008, Book chapter, Dynamics of crustal magma transfer, storage and differentiation
We focus on movement of magma beneath Kīlauea from the long summit eruption in 1967–1968 through the first historical sustained eruption on the east rift zone (Mauna Ulu 1969–1974), ending with the occurrence of a magnitude 7.2 earthquake beneath Kīlauea's eastern south flank. Magma from the Hawai‘iian hot spot continuously...
An evaluation of selected extraordinary floods in the United States reported by the U.S. Geological Survey and implications for future advancement of flood science
John E. Costa, Robert D. Jarrett
2008, Scientific Investigations Report 2008-5164
Thirty flood peak discharges determine the envelope curve of maximum floods documented in the United States by the U.S. Geological Survey. These floods occurred from 1927 to 1978 and are extraordinary not just in their magnitude, but in their hydraulic and geomorphic characteristics. The reliability of the computed discharge of...
Wyoming Landscape Conservation Initiative Science Workshop Proceedings, May 15-17, 2007
Frank D’Erchia
2008, Scientific Investigations Report 2008-5073
The U.S. Geological Survey (USGS) hosted a Wyoming Landscape Conservation Initiative (WLCI) Science Workshop at the University of Wyoming on May 15, 16, and 17, 2007. The goal of the workshop was to gather information from stakeholders about research needs and existing data resources to help develop the USGS WLCI...
Enhanced sidescan-sonar imagery, north-central Long Island Sound
K.Y. McMullen, L.J. Poppe, P.T. Schattgen, E. F. Doran
2008, Open-File Report 2008-1174
The U.S. Geological Survey, National Oceanic and Atmospheric Administration (NOAA), and Connecticut Department of Environmental Protection have been working cooperatively to map the sea-floor geology within Long Island Sound. Sidescan-sonar imagery collected during three NOAA hydrographic surveys (H11043, H11044, and H11045) was used to interpret the surficial-sediment distribution and sedimentary...
Geological, geochemical, and geophysical studies by the U.S. Geological Survey in Big Bend National Park, Texas
W. R. Page, K. J. Turner, R. G. Bohannon, M. E. Berry, V. S. Williams, D. P. Miggins, M. Ren, E. Y. Anthony, L. A. Morgan, P. W. C. Shanks, J. E. Gray, P. M. Theodorakos, David P. Krabbenhoft, A. H. Manning, P. A. Gemery-Hill, E. C. Hellgren, C. A. Stricker, D. P. Onorato, C. A. Finn, E. Anderson
J. E. Gray, W. R. Page, editor(s)
2008, Circular 1327
Big Bend National Park (BBNP), Tex., covers 801,163 acres (3,242 km2) and was established in 1944 through a transfer of land from the State of Texas to the United States. The park is located along a 118-mile (190-km) stretch of the Rio Grande at the United States-Mexico border. The park...
Understanding the occurrence and transport of current-use pesticides in the San Francisco estuary watershed
Kathryn Kuivila, Michelle L. Hladik
2008, San Francisco Estuary and Watershed Science (6)
The occurrence and potential effects of current-use pesticides are of concern in the San Francisco Estuary watershed but our understanding of the spatial and temporal distribution of contamination is limited. This paper summarizes almost two decades of historical data and uses it to describe our current knowledge of the processes...
Preliminary model of porphyry copper deposits
Byron R. Berger, Robert A. Ayuso, Jeffrey C. Wynn, Robert R. Seal II
2008, Open-File Report 2008-1321
The U.S. Geological Survey (USGS) Mineral Resources Program develops mineral-deposit models for application in USGS mineral-resource assessments and other mineral resource-related activities within the USGS as well as for nongovernmental applications. Periodic updates of models are published in order to incorporate new concepts and findings on the occurrence, nature, and...
Volusia Blue Spring — A hydrological treasure
Edward R. German
2008, Fact Sheet 2008-3035
Springs are natural openings in the ground through which water beneath the surface discharges into hydrologic features such as lakes, rivers, or the ocean. The beautiful springs and spring rivers are among Florida's most valued natural resources; their gemlike refreshing waters have been a focal point of life from prehistoric...