Gael Kurath, Maureen K. Purcell, Kyle A. Garver
2007, CAB Review (2)
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Publication Extents
Not all publications have extents, not all extents are completely accurateJohn A. Barron, Linda E. Heusser
Scott W. Starratt, Patrica Cornelius, James G. Joelson Jr., editor(s)
2007, Conference Paper, Proceedings of the twenty-first annual Pacific climate workshop
High resolution diatom and pollen data from piston core TN062 0550 off northernmost California, and Kasten core WW7710A-26 off coastal Oregon, are compiled for the past 2,400 years. Diatom proxy data for Fall SST from both cores record warm SST's in the intervals from ca. AD 400 to 600, and...
D. R. Pool, Jesse E. Dickinson
2007, Scientific Investigations Report 2006-5228
A numerical ground-water model was developed to simulate seasonal and long-term variations in ground-water flow in the Sierra Vista subwatershed, Arizona, United States, and Sonora, Mexico, portions of the Upper San Pedro Basin. This model includes the simulation of details of the groundwater flow system that were not simulated by...
Charles D. Blome, Jason R. Faith, George B. Ozuna
2007, Fact Sheet 2006-3145
This five-year USGS project, funded by the National Cooperative Geologic Mapping Program, is using multidisciplinary approaches to reveal the surface and subsurface geologic architecture of two important Texas aquifers: (1) the Edwards aquifer that extends from south of Austin to west of San Antonio and (2) the southern part of...
Joseph A. Briskey, Klaus J. Schulz, editor(s)
2007, Circular 1294
The world's use of nonfuel mineral resources continues to increase to support a growing population and increasing standards of living. The ability to meet this increasing demand is affected especially by concerns about possible environmental degradation associated with minerals production and by competing land uses. What information does the world...
Francis H. Chapelle, John Novak, John Parker, Bruce G. Campbell, Mark A. Widdowson
2007, Circular 1303
The sustainability of monitored natural attenuation (MNA) over time depends upon (1) the presence of chemical/biochemical processes that transform wastes to innocuous byproducts, and (2) the availability of energy to drive these processes to completion. The presence or absence of contaminant-transforming chemical/biochemical processes can be determined by observing contaminant mass...
Rosalyn K. Hayward, Kevin F. Mullins, L.K. Fenton, T.M. Hare, T.N. Titus, M.C. Bourke, Anthony Colaprete, P. R. Christensen
2007, Open-File Report 2007-1158
Introduction The Mars Global Digital Dune Database presents data and describes the methodology used in creating the database. The database provides a comprehensive and quantitative view of the geographic distribution of moderate- to large-size dune fields from 65? N to 65? S latitude and encompasses ~ 550 dune fields. The database...
K.K. Bradbury, D.C. Barton, J.G. Solum, S.D. Draper, J.P. Evans
2007, Geosphere (3) 299-318
We examine drill cuttings from the San Andreas Fault Observatory at Depth (SAFOD) boreholes to determine the lithology and deformational textures in the fault zones and host rocks. Cutting samples represent the lithologies from 1.7-km map distance and 3.2-km vertical depth adjacent to...
D.L. Naftz, B.J. Stolp, C.C. Fuller, T. Snyder, M. Wilkins
2007, Conference Paper, Proceedings of the 12th International Symposium on Water-Rock Interaction
Gas generation from groundwater interaction with a field-scale zero-valent iron permeable reactive barrier (ZVI PRB) was measured and simulated with the geochemical reaction path model PHREEQC. Due to anaerobic corrosion of Fe (0) within the ZVI...
Kim S. Perkins, Kari A. Winfield
2007, Scientific Investigations Report 2007-5093
The unsaturated zone at the Idaho National Laboratory is complex, comprising thick basalt flow sequences interbedded with thinner sedimentary layers. Understanding the highly nonlinear relation between water content and hydraulic conductivity within the sedimentary interbeds is one element in predicting water flow and solute transport processes in this geologically complex...
Glen B. Carleton, Alison D. Gordon
2007, Scientific Investigations Report 2006-5269
A numerical ground-water-flow model was constructed to simulate ground-water flow in the Pohatcong Valley, including the area within the U.S. Environmental Protection Agency Pohatcong Valley Ground Water Contamination Site. The area is underlain by glacial till, alluvial sediments, and weathered and competent carbonate bedrock. The northwestern and southeastern valley boundaries...
J.M. Schmidt, T.D. Light, L.J. Drew, Frederic H. Wilson, Marti L. Miller, R. W. Saltus
2007, Scientific Investigations Report 2007-5039
The Bay Resource Management Plan (RMP) area in southwestern Alaska, north and northeast of Bristol Bay contains significant potential for undiscovered locatable mineral resources of base and precious metals, in addition to metallic mineral deposits that are already known. A quantitative probabilistic assessment has identified 24 tracts of land that...
Ross S. Stein
2007, Open-File Report 2007-1162
Summary To estimate the down-dip coseismic fault dimension, W, the Executive Committee has chosen the Nazareth and Hauksson (2004) method, which uses the 99% depth of background seismicity to assign W. For the predicted earthquake magnitude-fault area scaling used to estimate the maximum magnitude of an earthquake rupture from a fault's...
Dan L. Mosier, Donald A. Singer, Vladimir I. Berger
2007, Scientific Investigations Report 2007-5082
A mineral-deposit density model for volcanogenic massive sulfide deposits was constructed from 38 well-explored control areas from around the world. Control areas contain at least one exposed volcanogenic massive sulfide deposit. The control areas used in this study contain 150 kuroko, 14 Urals, and 25 Cyprus massive sulfide subtypes of...
Aaron J. DeLonay, Diana M. Papoulias, Robert B. Jacobson, Mark L. Wildhaber, Darin G. Simpkins, Carl E. Korschgen
2007, Open-File Report 2007-1262-A
For more than a hundred years, human activities have modified the natural forces that control the Missouri River and its native fish fauna. While the ecological effects of regulation and channel engineering are understood in general, the current understanding is not sufficient to guide river restoration and management. The U.S....
Ken W. Krauss, Jim L. Chambers, David L. Creech
2007, Book chapter, Ecology of tidal freshwater forested wetlands of the southeastern United States
Worldwide, the intrusion of salinity into irrigated and natural landscapes has major economic and cultural impacts and has resulted in large reductions in crop yields (Epstein et al. 1980; Flowers 2003). Losses have prompted wide-scale programs to improve the salt tolerance of many agronomic species or to identify crop species...
Robert B. Jacobson, Harold E. Johnson, Joanna M. Reuter, Caroline M. Elliott
2007, Open-File Report 2007-1262-D
This report documents progress on three related components of habitat assessments in the Lower Missouri River during 2005–06. The habitat-use component links this research directly to sturgeon ecology research described in other chapters. The habitat availability and habitat dynamics assessments provide physical context for the ecological research. Results from 2005...
Charles Berenbrock, Joseph P. Rousseau, Brian V. Twining
2007, Scientific Investigations Report 2007-5080
A 1.9-mile reach of the Big Lost River, between the Idaho National Engineering and Environmental Laboratory (INEEL) diversion dam and the Pioneer diversion structures, was investigated to evaluate the effects of streambed erosion and bedrock constrictions on model predictions of water-surface elevations. Two one-dimensional (1-D) models, a fixed-bed surface-water flow...
Richard J. Huizinga
2007, Scientific Investigations Report 2007-5098
The Blue River Channel Modification project being implemented by the U.S. Army Corps of Engineers (USACE) is intended to provide flood protection within the Blue River valley in the Kansas City, Mo., metropolitan area. In the latest phase of the project, concerns have arisen about preserving the Civil War historic...
Meghan C. Roussel, Michael G. Canova, William H. Asquith, Richard L. Kiesling
2007, Data Series 255
The Arroyo Colorado is in the lower Rio Grande Valley of southern Texas and extends from near Mission, Texas, eastward to the Laguna Madre estuarine and coastal marine system, which separates Padre Island from the Texas mainland. Streamflow in the Arroyo Colorado primarily is sustained by effluent from municipal wastewater-treatment...
Robert A. Gleason, Brian A. Tangen, Murray K. Laubhan, Kevin E. Kermes, Ned H. Euliss Jr.
2007, Open-File Report 2007-1159
Executive Summary Concern over flooding along rivers in the Prairie Pothole Region has stimulated interest in developing spatially distributed hydrologic models to simulate the effects of wetland water storage on peak river flows. Such models require spatial data on the storage volume and interception area of existing and restorable wetlands in...
M.D. Zoback, Stephen H. Hickman, William L. Ellsworth
2007, Book chapter, Treatise on Geophysics
The objective of fault-zone drilling projects is to directly study the physical and chemical processes that control deformation and earthquake generation within active fault zones. An enormous amount of field, laboratory, and theoretical work has been directed toward the mechanical and...
Mark D. Kozar, David J. Weary, Katherine S. Paybins, Herbert A. Pierce
2007, Scientific Investigations Report 2007-5066
The Leetown Science Center is a research facility operated by the U.S. Geological Survey that occupies approximately 455-acres near Kearneysville, Jefferson County, West Virginia. Aquatic and fish research conducted at the Center requires adequate supplies of high-quality, cold ground water. Three large springs and three production wells currently (in 2006)...
Alan L. Flint, Lorraine E. Flint
2007, Scientific Investigations Report 2007-5099
A regional-scale water-balance model was used to estimate recharge and runoff potential and support U.S. Geological Survey efforts to develop a better understanding of water availability for the Basin and Range carbonate-rock aquifer system (BARCAS) study in White Pine County, Nevada, and adjacent areas in Nevada and Utah. The water-balance...
L.J. Poppe, M. L. DiGiacomo-Cohen, E. F. Doran, S. M. Smith, H.F. Stewart, N.A. Forfinski
2007, Open-File Report 2007-1012
Digital terrain models (DTMs) produced from multibeam bathymetric data provide valuable base maps for marine geological interpretations (Todd and others, 1999; Mosher and Thomson, 2002; ten Brink and others, 2004; Poppe and others, 2006a, b, c, d). These maps help define the geological variability of the sea floor (one of...