PRISM3 DOT1 Atlantic Basin Reconstruction
Harry Dowsett, Marci Robinson, Gary S. Dwyer, Mark Chandler, Thomas Cronin
2006, Data Series 189
PRISM3 DOT1 (Pliocene Research, Interpretation and Synoptic Mapping 3, Deep Ocean Temperature 1) provides a three-dimensional temperature reconstruction for the mid-Pliocene Atlantic basin, the first of several regional data sets that will comprise a global mid-Pliocene reconstruction. DOT1 is an alteration of modern temperature values for the Atlantic Ocean in...
A method of Shaly sand correction for estimating gas hydrate saturations using downhole electrical resistivity log data
Myung W. Lee, Timothy S. Collett
2006, Scientific Investigations Report 2006-5121
Estimation of the amount of nonconductive and conductive constituents in the pore space of sediments, using electrical resistivity logs, generally loses accuracy when clays are present in the reservoir. Many different methods and clay models have been proposed to account for the conductivity of clay (for example, the shaly sand...
Usoi Dam wave overtopping and flood routing in the Bartang and Panj Rivers, Tajikistan
John Risley, Joseph Walder, Roger Denlinger
2006, Water-Resources Investigations Report 2003-4004
The Usoi dam was created in the winter of 1911 after an enormous seismogenic rock slide completely blocked the valley of the Bartang River in the Pamir Mountains of southeastern Tajikistan. At present the dam impounds 17 million cubic meters of water in Lake Sarez. Flood volume and discharge estimates were...
Seismic constraints and coulomb stress changes of a blind thrust fault system, 2: Northridge, California
Ross S. Stein, Jian Lin
2006, Open-File Report 2006-1158
We review seismicity, surface faulting, and Coulomb stress changes associated with the 1994 Northridge, California, earthquake. All of the observed surface faulting is shallow, extending meters to tens of meters below the surface. Relocated aftershocks reveal no seismicity shallower than 2 km depth. Although many of the aftershocks lie along...
Chapter 5. Assessment of undiscovered conventional oil and gas resources-Lower Cretaceous Travis Peak and Hosston formations, Jurassic Smackover interior salt basins total petroleum system, in the East Texas basin and Louisiana-Mississippi salt basins provinces
T. S. Dyman, S. M. Condon
2006, Data Series 69-E-5
The Lower Cretaceous Travis Peak Formation of east Texas and southern Arkansas (and the correlative Hosston Formation of Louisiana and Mississippi) is a basinward-thickening wedge of terrigenous clastic sedimentary rocks that underlies the northern Gulf of Mexico Basin from east Texas across northern Louisiana to southern Mississippi. Clastic detritus was...
Structural equation modeling and natural systems
James B. Grace
2006, Book
This book, first published in 2006, presents an introduction to the methodology of structural equation modeling, illustrates its use, and goes on to argue that it has revolutionary implications for the study of natural systems. A major theme of this book is that we have, up to this point, attempted...
Development and application of a screening model for simulating regional ground-water flow in the St. Croix River basin, Minnesota and Wisconsin
Daniel T. Feinstein, Cheryl A. Buchwald, Charles P. Dunning, Randall J. Hunt
2006, Scientific Investigations Report 2005-5283
A series of databases and an accompanying screening model were constructed by the U.S. Geological Survey, in cooperation with the National Park Service, to better understand the regional ground-water-flow system and its relation to stream drainage in the St. Croix River Basin. The St. Croix River and its tributaries drain...
Modeling water quality effects of structural and operational changes to Scoggins Dam and Henry Hagg Lake, Oregon
Annett B. Sullivan, Stewart A. Rounds
2006, Scientific Investigations Report 2006-5060
To meet water quality targets and the municipal and industrial water needs of a growing population in the Tualatin River Basin in northwestern Oregon, an expansion of Henry Hagg Lake is under consideration. Hagg Lake is the basin's primary storage reservoir and provides water during western Oregon's typically dry summers....
Vulnerability of recently recharged ground water in the High Plains aquifer to nitrate contamination
Jason J. Gurdak, Sharon L. Qi
2006, Scientific Investigations Report 2006-5050
Nitrate concentrations greater than background levels have been detected in ground water of the High Plains aquifer. Empirically based models and corresponding maps were developed that predict the vulnerability of the aquifer to nonpoint-source nitrate contamination. The models predict the probability of detecting nitrate concentrations larger than 4 milligrams per...
Simulated water budgets and ground-water/surface-water interactions in Bushkill and parts of Monocacy Creek watersheds, Northampton County, Pennsylvania: A preliminary study with identification of data needs
Dennis W. Risser
2006, Open-File Report 2006-1143
This report, prepared in cooperation with the Department of Environmental Protection, Office of Mineral Resources Management, provides a preliminary analysis of water budgets and generalized ground-water/surface-water interactions for Bushkill and parts of Monocacy Creek watersheds in Northampton County, Pa., by use of a ground-water flow model. Bushkill Creek watershed was...
Computer program for the Kendall family of trend tests
Dennis R. Helsel, David K. Mueller, James R. Slack
2006, Scientific Investigations Report 2005-5275
The Seasonal Kendall (SK) test for trend was developed by the U.S. Geological Survey and has become the most frequently used test for trend in the environmental sciences. Recently the test was modified to form the Regional Kendall (RK) test for trend. In this form, trends at numerous locations within...
Channel morphology and bed-sediment characteristics before and after riparian vegetation clearing in the Cottonwood Ranch, Platte River, Nebraska, water years 2001-2004
Paul J. Kinzel, Jonathan M. Nelson, Ashley K. Heckman
2006, Scientific Investigations Report 2005-5285
Riparian areas along a reach of Platte River passing through Nebraska Public Power District's Cottonwood Ranch Property were modified during 2002 to 2004 to enhance in-channel habitats for endangered and threatened avian species. A component of this alteration involved the removal of riparian vegetation from riverbanks and islands to provide...
Frequency of annual maximum precipitation in the City of Charlotte and Mecklenburg County, North Carolina, through 2004
J. Curtis Weaver
2006, Scientific Investigations Report 2006-5017
A study of annual maximum precipitation frequency in Mecklenburg County, North Carolina, was conducted to characterize the frequency of precipitation at sites having at least 10 years of precipitation record. Precipitation-frequency studies provide information about the occurrence of precipitation amounts for given durations (for example, 1 hour or 24 hours)...
Potential effects of elevated atmospheric carbon dioxide (CO2) on coastal wetlands
Karen McKee
2006, Fact Sheet 2006-3074
Carbon dioxide (CO2) concentration in the atmosphere has steadily increased from 280 parts per million (ppm) in preindustrial times to 381 ppm today and is predicted by some models to double within the next century. Some of the important pathways whereby changes in atmospheric CO2 may impact coastal...
Refined thorium abundances for lunar red spots: Implications for evolved, nonmare volcanism on the Moon
Justin Hagerty, D. J. Lawrence, B. R. Hawke, D. T. Vaniman, R.C. Elphic, William C. Feldman
2006, Journal of Geophysical Research E: Planets (111)
We have used improved knowledge of the spatial distribution of thorium (Th) on the lunar surface, in conjunction with a forward modeling analysis of Lunar Prospector gamma ray data, to estimate the thorium abundances of lunar red spots. The results from this study can be combined with preexisting compositional and...
Spatial variations in fish-tissue mercury concentrations in the St. Croix River basin, Minnesota and Wisconsin, 2004
Victoria G. Christensen, Stephen P. Wente, Mark B. Sandheinrich, Mark E. Brigham
2006, Scientific Investigations Report 2006-5063
Parts of the St. Croix River in Minnesota and Wisconsin are under fish-consumption advisories because of elevated mercury concentrations that have been measured in fish from this river. The U.S. Geological Survey, National Park Service, and the University of Wisconsin, LaCrosse, cooperated in a study to determine the spatial variation...
CLICK: The new USGS center for LIDAR information coordination and knowledge
Jason M. Stoker, Susan K. Greenlee, Dean B. Gesch, Jordan C. Menig
2006, Photogrammetric Engineering and Remote Sensing (72) 613-616
Elevation data is rapidly becoming an important tool for the visualization and analysis of geographic information. The creation and display of three-dimensional models representing bare earth, vegetation, and structures have become major requirements for geographic research in the past few years. Light Detection and Ranging (lidar) has been increasingly accepted...
Physical and hydrochemical evidence of lake leakage near Jim Woodruff Lock and Dam and of ground-water inflow to Lake Seminole, and an assessment of karst features in and near the lake, southwestern Georgia and northwestern Florida
Lynn J. Torak, Dianna M. Crilley, Jaime A. Painter
2006, Scientific Investigations Report 2005-5084
Hydrogeologic data and water-chemistry analyses indicate that Lake Seminole leaks into the Upper Floridan aquifer near Jim Woodruff Lock and Dam, southwestern Georgia and northwestern Florida, and that ground water enters Lake Seminole along upstream reaches of the lake’s four impoundment arms (Chattahoochee and Flint Rivers, Spring Creek, and Fishpond...
User guide for the farm process (FMP1) for the U.S. Geological Survey's modular three-dimensional finite-difference ground-water flow model, MODFLOW-2000
Wolfgang Schmid, R. T. Hanson, Thomas Maddock III, S. A. Leake
2006, Techniques and Methods 6-A17
There is a need to estimate dynamically integrated supply-and-demand components of irrigated agriculture as part of the simulation of surface-water and ground-water flow. To meet this need, a computer program called the Farm Process (FMP1) was developed for the U.S. Geological Survey three-dimensional finite-difference modular ground-water flow model, MODFLOW- 2000...
Magnetotelluric survey to locate the Archean/Proterozoic suture zone north of Wells, Nevada
Jackie M. Williams, Brian D. Rodriguez
2006, Open-File Report 2006-1119
It is important to know whether major mining districts in the Northern Nevada Gold Province are underlain by rocks of the Archean Wyoming craton, which are known to contain orogenic gold deposits, or by accreted rocks of the Paleoproterozoic Mojave province. It is also important to know the location and...
Geophysical studies of the Crump Geyser known geothermal resource area, Oregon, in 1975
Donald Plouff
2006, Open-File Report 2006-1110
The U.S. Geological Survey (USGS) conducted geophysical studies in support of the resource appraisal of the Crump Geyser Known Geothermal Resource Area (KGRA). This area was designated as a KGRA by the USGS, and this designation became effective on December 24, 1970. The land classification standards for a KGRA were...
Capitol Lake, Washington, 2004 data summary
Jodi Eshleman, Peter Ruggiero, Etienne Kingsley, Guy Gelfenbaum, Doug George
2006, Data Series 180
At the request of the Washington Department of Ecology (WDOE), the US Geological Survey (USGS) collected bathymetry data in Capital Lake, Olympia, Wash., on September 21, 2004. The data are to be used to calculate sediment infilling rates within the lake as well as for developing the bottom boundary conditions...
User's guide to the Variably Saturated Flow (VSF) process to MODFLOW
R. Brad Thoms, Richard L. Johnson, Richard W. Healy
2006, Techniques and Methods 6-A18
A new process for simulating three-dimensional (3-D) variably saturated flow (VSF) using Richards' equation has been added to the 3-D modular finite-difference ground-water model MODFLOW. Five new packages are presented here as part of the VSF Process--the Richards' Equation Flow (REF1) Package, the Seepage Face (SPF1) Package, the Surface Ponding...
Geology, ground-water hydrology, geochemistry, and ground-water simulation of the Beaumont and Banning Storage Units, San Gorgonio Pass area, Riverside County, California
Diane L. Rewis, Allen H. Christensen, Jonathan Matti, Joseph A. Hevesi, Tracy Nishikawa, Peter Martin
2006, Scientific Investigations Report 2006-5026
Ground water has been the only source of potable water supply for residential, industrial, and agricultural users in the Beaumont and Banning storage units of the San Gorgonio Pass area, Riverside County, California. Ground-water levels in the Beaumont area have declined as much as 100 feet between the early 1920s...
Idaho and Montana non-fuel exploration database 1980-1997
David A. Buckingham, Carl A. DiFrancesco, Kenneth E. Porter, Donald I. Bleiwas, J. Douglas Causey, William B. Ferguson
2006, Data Series 173
This report describes a relational database containing information about mineral exploration projects in the States of Idaho and Montana for the years 1980 through 1997 and a spatial (geographic) database constructed using data from the relational database. The focus of this project was to collect information on exploration for mineral...
