MODFLOW-2000, the U.S. Geological Survey Modular Ground-Water Model -Documentation of the Hydrogeologic-Unit Flow (HUF) Package
E.R. Anderman, M. C. Hill
2000, Open-File Report 2000-342
This report documents the Hydrogeologic-Unit Flow (HUF) Package for the groundwater modeling computer program MODFLOW-2000. The HUF Package is an alternative internal flow package that allows the vertical geometry of the system hydrogeology to be defined explicitly within the model using hydrogeologic units that can be different than the definition of the model layers....
Map and database of Quaternary faults in the vicinity of Managua, Nicaragua
Hugh Cowan, Michael N. Machette, Xavier Amador, Karen S. Morgan, Richard L. Dart, Lee-Ann Bradley
2000, Open-File Report 2000-437
No abstract available. ...
Results of the U.S. Geological Survey's analytical evaluation program for standard reference samples distributed in October 1999
T.W. Farrar
2000, Open-File Report 2000-227
This report presents the results of the U.S. Geological Survey's analytical evaluation program for six standard reference samples -- T-159 (trace constituents), M-152 (major constituents), N-63 (nutrient constituents), N-64 (nutrient constituents), P-33 (low ionic strength constituents), and Hg-29 (mercury) -- that were distributed in October 1999 to 149 laboratories enrolled in the U.S....
Digital mapping techniques '00, workshop proceedings - May 17-20, 2000, Lexington, Kentucky
David R. Soller
2000, Open-File Report 2000-325
Introduction: The Digital Mapping Techniques '00 (DMT'00) workshop was attended by 99 technical experts from 42 agencies, universities, and private companies, including representatives from 28 state geological surveys (see Appendix A). This workshop was similar in nature to the first three meetings, held in June, 1997, in Lawrence, Kansas (Soller,...
Ground-water, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona: 1998
Margot Truini, Bradley M. Baum, Gregory R. Littin, Gayl Shingoitewa-Honanie
2000, Open-File Report 2000-66
The Black Mesa monitoring program is designed to document long-term effects of ground-water pumping from the N aquifer by industrial and municipal users. The N aquifer is the major source of water in the 5,400-square-mile Black Mesa area, and the ground water occurs under confined and unconfined conditions. Monitoring activities...
Archive of sidescan-sonar data and DGPS navigation data collected during U.S. Geological Survey cruise DIAN97032 Long Island, New York Inner Shelf--Fire Island, New York 25 September-19 October 1997
E. S. Hammar-Klose, J. C. Hill, W. C. Schwab, E.R. Thieler
2000, Open-File Report 2000-440
Preliminary map showing landslide densities, mean recurrence intervals, and exceedance probabilities as determined from historic records, Seattle, Washington
J. A. Coe, J. A. Michael, R. A. Crovelli, W. Z. Savage
2000, Open-File Report 2000-303
Preliminary maps of Quaternary deposits and liquefaction susceptibility, nine-county San Francisco Bay region, California: a digital database
Keith L. Knudsen, Janet M. Sowers, Robert C. Witter, Carl M. Wentworth, Edward J. Helley, Robert S. Nicholson, Heather M. Wright, Katherine H. Brown
2000, Open-File Report 2000-444
This report presents a preliminary map and database of Quaternary deposits and liquefaction susceptibility for the nine-county San Francisco Bay region, together with a digital compendium of ground effects associated with past earthquakes in the region. The report consists of (1) a spatial database of fivedata layers (Quaternary deposits, quadrangle...
Initial report on IMAGES V cruise of the Marion-Dufresne to the Chesapeake Bay, June 20-22, 1999
Thomas M. Cronin
2000, Open-File Report 2000-306
Analytical results for mine dump samples and leachate solutions, upper Animas River watershed, San Juan County, Colorado
David L. Fey, J. Thomas Nash, Douglas B. Yager, George A. Desborough
2000, Open-File Report 2000-338
Sawgrass density, biomass, and leaf area index: A flume study in support of research on wind sheltering effects in the Florida Everglades
Nancy B. Rybicki, Justin T. Reel, Henry A. Ruhl, Patricia T. Gammon, Virginia Carter, Jonathan K. Lee
2000, Open-File Report 2000-172
The U.S. Geological Survey is studying the wind sheltering effects of vegetation in the Florida Everglades. In order to test both the flow resistance and wind sheltering effects of sawgrass, uniform dense stands of sawgrass were grown in a tilting flume at Stennis Space Center, Mississippi. In June, 1997, one...
Framework for Regional, Coordinated Monitoring in the Middle and Upper Deschutes River Basins, Oregon
Chauncey W. Anderson
2000, Open-File Report 2000-386
This report presents a framework for regional water-quality monitoring in the middle and upper Deschutes River Basin, Oregon, that would be coordinated among organizations doing related monitoring. The emphasis is on maximizing the value of existing programs and resources by minimizing overlapping sampling efforts, filling key data gaps, increasing communication...
Preliminary stratigraphic database for the subsurface Tertiary and uppermost Cretaceous sediments of Dorchester County, South Carolina
Gregory Gohn, Laurel M. Bybell, Peter G. Chirico, R. A. Christopher, Lucy E. Edwards, N. O. Frederiksen, D.C. Prowell, Jean Self-Trail, Robert E. Weems
2000, Open-File Report 2000-49
No abstract available....
SMSIM--Fortran programs for simulating ground motions from earthquakes: Version 2.0.--a revision of OFR 96-80-A
David M. Boore
2000, Open-File Report 2000-509
A simple and powerful method for simulating ground motions is based on the assumption that the amplitude of ground motion at a site can be specified in a deterministic way, with a random phase spectrum modified such that the motion is distributed over a duration related to the earthquake magnitude...
Hydrogeochemical data for historic mining areas, Humboldt watershed and adjacent areas, northern Nevada
J. Thomas Nash
2000, Open-File Report 2000-459
South Sumatra Basin Province, Indonesia; the Lahat/Talang Akar-Cenozoic total petroleum system
Michele G. Bishop
2000, Open-File Report 99-50-S
Oil and gas are produced from the onshore South Sumatra Basin Province. The province consists of Tertiary half-graben basins infilled with carbonate and clastic sedimentary rocks unconformably overlying pre-Tertiary metamorphic and igneous rocks. Eocene through lower Oligocene lacustrine shales and Oligocene through lower Miocene lacustrine and deltaic coaly shales are...
Subsurface characterization of selected water bodies in the St. Johns River Water Management District, Northeast Florida
J. L. Kindinger, J. B. Davis, J. G. Flocks
2000, Open-File Report 2000-180
No abtract available....
Program BOMTOM for crosswell radar and seismic tomography
Daryl R. Tweeton
2000, Open-File Report 2000-455
Program MIGRATOM for crosswell radar and seismic tomography
Daryl R. Tweeton
2000, Open-File Report 2000-457
Geochemical productivity monitoring in Florida Bay
Kimberly Yates, Robert Halley
2000, Open-File Report 2000-361
No abstract available....
Deep electrical geophysical measurements across the Carlin Trend, Nevada
Jackie M. Williams, Brian D. Rodriguez
2000, Open-File Report 2000-419
Preliminary simulation of a M6.5 earthquake on the Seattle Fault using 3D finite-difference modeling
William J. Stephenson, Arthur D. Frankel
2000, Open-File Report 2000-339
A three-dimensional finite-difference simulation of a moderate-sized (M 6.5) thrust-faulting earthquake on the Seattle fault demonstrates the effects of the Seattle Basin on strong ground motion in the Puget lowland. The model area includes the cities of Seattle, Bremerton and Bellevue. We use a recently developed detailed 3D-velocity model of...
Geographic Information for Analysis of Highway Runoff-Quality Data on a National or Regional Scale in the Conterminous United States
Tomas W. Smieszek, Gregory E. Granato
2000, Open-File Report 2000-432
Spatial data are important for interpretation of water-quality information on a regional or national scale. Geographic information systems (GIS) facilitate interpretation and integration of spatial data. The geographic information and data compiled for the conterminous United States during the National Highway Runoff Water-Quality Data and Methodology Synthesis project is described...
Program 3DTOM for Crosswell Radar and Seismic Tomography
Daryl R. Tweeton
2000, Open-File Report 2000-456
Titanium mineral resources of the western U.S.: An update
Eric R. Force, Scott Creely
2000, Open-File Report 2000-442
Thirteen deposits or districts in the western U.S. have been examined in which titanium mineral resources have been reported or implied. These deposits are of the following general types (in probable order of importance): 1) Cretaceous shoreline placer deposits, 2) silica-sand deposits of California, 3) fluvial monazite placers of Idaho,...
