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Page 2259, results 56451 - 56475

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Not all publications have extents, not all extents are completely accurate
Two-Dimensional Simulation of Flow and Evaluation of Bridge Scour at Structure A-1700 on Interstate 155 over the Mississippi River near Caruthersville, Missouri
Richard J. Huizinga
2007, Scientific Investigations Report 2007-5230
The evaluation of scour at bridges throughout the State of Missouri has been ongoing since 1991, and most of these evaluations have used one-dimensional hydraulic analysis and application of conventional scour depth prediction equations. Occasionally, the complex conditions of a site dictate a more thorough assessment of the stream hydraulics...
Characterization of Water Quality in Unmonitored Streams in the Mississippi Alluvial Plain, Northwestern Mississippi, May-June 2006
Jeannie R. Bryson, Richard H. Coupe, Michael A. Manning
2007, Scientific Investigations Report 2007-5116
The Mississippi Department of Environmental Quality is required to develop restoration and remediation plans for water bodies not meeting their designated uses, as stated in the U.S. Environmental Protection Agency's Clean Water Act section 303(d). The majority of streams in northwestern Mississippi are on the 303(d) list of water-quality limited...
Hydrogeology and simulation of ground-water flow near Mount Pleasant, South Carolina: Predevelopment, 2004, and predicted scenarios for 2030
Matthew D. Petkewich, Bruce G. Campbell
2007, Scientific Investigations Report 2007-5126
Heavy water use from the Cretaceous Middendorf aquifer in South Carolina has created a large, regional cone of depression in the potentiometric surface of the Middendorf aquifer in Charleston and Berkeley Counties, South Carolina. Water-level declines of up to 249 feet have been observed in wells over the past 125...
Chapter 8 Tool for monitoring hydrophilic contaminants in water: polar organic chemical integrative sampler (POCIS)
David A. Alvarez, James N. Huckins, Jimmie D. Petty, Tammy L. Jones-Lepp, Frank Stuer-Lauridsen, Dominic T. Getting, Jon P. Goddard, Anthony Gravell
2007, Comprehensive Analytical Chemistry (48) 171-197
The development of the polar organic chemical integrative sampler (POCIS) provides environmental scientists and policy makers a tool for assessing the presence and potential impacts of the hydrophilic component of these organic contaminants. The POCIS provides a means for determining the time-weighted average (TWA) concentrations of targeted chemicals that can...
Haemoproteus
Carter T. Atkinson
Carter T. Atkinson, Nancy J. Thomas, D. Bruce Hunter, editor(s)
2007, Book chapter, Parasitic diseases of wild birds
No abstract available....
Dycheia shergoldi, a new genus and species of Late Cambrian Multivalved Mollusc from Oklahoma, USA
J. Pojeta Jr., James R. Derby
2007, Memoirs of the Association of Australasian Palaeontologists (34) 489-497
A new mollusc from the Upper Cambrian Fort Sill Limestone of Oklahoma, U.S.A. is described. Dycheia shergoldi has at least two types of valves, but the total number of valves is unknown, because the species is known only from disarticulated specimens. The valves show various morphological similarities to Cambrian and...
Potentiometric Surface of the Upper Floridan Aquifer, West-Central Florida, September 2006
A.G. Ortiz
2007, Open-File Report 2007-1228
The Floridan aquifer system consists of the Upper and Lower Floridan aquifers separated by the middle confining unit. The middle confining unit and the Lower Floridan aquifer in west-central Florida generally contain highly mineralized water. The water-bearing units containing freshwater are herein referred to as the Upper Floridan aquifer. The...
Introduction to Regional Geology, Tectonics, and Metallogenesis of Northeast Asia
Leonid M. Parfenov, Gombosuren Badarch, Nikolai A. Berzin, Duk-Hwan Hwang, Alexander I. Khanchuk, Mikhail I. Kuzmin, Warren J. Nokleberg, Alexander O. Obolenskiy, Masatsugu Ogasawara, Andrei V. Prokopiev, Sergey M. Rodionov, Alexander P. Smelov, Hongquan Yan
2007, Open-File Report 2007-1183-A
Purpose This introduction presents an overview of the regional geology, tectonics, and metallogenesis of Northeast Asia. The major purposes are to provide a relatively short summary of these features for readers who are unfamiliar with Northeast Asia; a general scientific introduction for the succeeding chapters of this volume; and an overview...
Geographic information systems, remote sensing, and spatial analysis activities in Texas, 2002-07
D.K. Pearson, R.H. Gary, Z.D. Wilson
2007, Fact Sheet 2007-3076
Geographic information system (GIS) technology has become an important tool for scientific investigation, resource management, and environmental planning. A GIS is a computer-aided system capable of collecting, storing, analyzing, and displaying spatially referenced digital data. GIS technology is particularly useful when analyzing a wide variety of spatial data such as...
Nitrogen isotopes as indicators of NOx source contributions to atmospheric nitrate deposition across the midwestern and northeastern United States
Emily M. Elliott, Carol Kendall, Scott D. Wankel, Douglas A. Burns, E.W. Boyer, K. Harlin, Daniel J Bain, T.J. Butler
2007, Environmental Science & Technology (41) 7661-7667
Global inputs of NOx are dominated by fossil fuel combustion from both stationary and vehicular sources and far exceed natural NOx sources. However, elucidating NOx sources to any given location remains a difficult challenge, despite the need for this information to develop sound regulatory and mitigation strategies. We present results from a regional-scale...
Conceptual design of the Everglades Depth Estimation Network (EDEN) grid
John Jones, Susan D. Price
2007, Open-File Report 2007-1200
The Everglades Depth Estimation Network (EDEN) offers a consistent and documented dataset that can be used to guide large-scale field operations, to integrate hydrologic and ecological responses, and to support biological and ecological assessments that measure ecosystem responses to the Comprehensive Everglades Restoration Plan (Telis, 2006). Ground elevation data for...
Methods and data used to investigate polonium-210 as a source of excess gross-alpha radioactivity in ground water, Churchill County, Nevada
Ralph L. Seiler
2007, Open-File Report 2007-1231
Ground water is the major source of drinking water in the Carson River Basin, California and Nevada. Previous studies have shown that uranium and gross-alpha radioactivities in ground water can be greater than U.S. Environmental Protection Agency Maximum Contaminant Levels, particularly in the Carson Desert, Churchill County, Nevada. Studies also...
Seabed ripple morphology and surficial sediment size at the SAX04 experiments near Fort Walton Beach, Florida, fall 2004
Daniel M. Hanes, Li H. Erikson, Jamie M.R. Lescinski, Jodi N. Harney, Carissa L. Carter, Gerry A. Hatcher, Jessica R. Lacy, David M. Rubin
2007, Open-File Report 2007-1232
Data presented in this report originates from measurements obtained off the Florida coast (fig. 1) as part of the Sediment Acoustics Experiment (SAX04) and Ripples Department Research Initiative (DRI) (Office of Naval Research (ONR), Critical Benthic Environmental Processes and Modeling, Long Range BAA 04-001, Sept. 10, 2003). The aim of...
A monthly water-balance model driven by a graphical user interface
Gregory J. McCabe, Steven L. Markstrom
2007, Open-File Report 2007-1088
This report describes a monthly water-balance model driven by a graphical user interface, referred to as the Thornthwaite monthly water-balance program. Computations of monthly water-balance components of the hydrologic cycle are made for a specified location. The program can be used as a research tool, an assessment tool, and a...
Geophysical analysis of the Salmon Peak Formation near Amistad Reservoir Dam, Val Verde County, Texas, and Coahuila, Mexico, March 2006, to aid in piezometer placement
Gregory P. Stanton, Wade H. Kress, Andrew Teeple, Michael L. Greenslate, Allan K. Clark
2007, Scientific Investigations Report 2007-5143
Since 1992, numerous sinkholes have developed northwest of the Amistad Reservoir dam on the Rio Grande. Increases in the discharge of springs south of the dam, on the western side of the Rio Grande, in Coahuila, Mexico, have been documented. In 1995 the Mexico Section of the International Boundary and...
High-resolution topographic, bathymetric, and oceanographic data for the Pleasure Point area, Santa Cruz County, California: 2005-2007
Curt D. Storlazzi, Patrick L. Barnard, Brian D. Collins, David P. Finlayson, Nadine E. Golden, Gerry A. Hatcher, Robert E. Kayen, Peter Ruggiero
2007, Open-File Report 2007-1270
The County of Santa Cruz Department of Public Works and the County of Santa Cruz Redevelopment Agency requested the U.S. Geological Survey (USGS) Western Coastal and Marine Geology Team (WCMG) to provide baseline geologic and oceanographic information on the coast and inner shelf at Pleasure Point, Santa Cruz County, California....
Geologic Map of the Pueblo of Isleta Tribal Lands and Vicinity, Bernalillo, Torrance, and Valencia Counties, Central New Mexico
Florian Maldonado, Janet L. Slate, Dave W. Love, Sean D. Connell, J. C. Cole, Karl E. Karlstrom
2007, Scientific Investigations Map 2913
This 1:50,000-scale map compiles geologic mapping of the Pueblo of Isleta tribal lands and vicinity in the central part of the Albuquerque Basin in central New Mexico. The map synthesizes new geologic mapping and summarizes the stratigraphy, structure, and geomorphology of an area of approximately 2,000 km2 that spans the...