Robert Horton
2004, Open-File Report 2003-424
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Page 217, results 5401 - 5425
Publication Extents
Not all publications have extents, not all extents are completely accurateTracy J.B. Yager, David B. Smith, James G. Crock
2004, Open-File Report 2004-1404
In January 1999, the U.S. Geological Survey began an expanded monitoring program near Deer Trail, Colorado, in cooperation with the Metro Wastewater Reclamation District and the North Kiowa Bijou Groundwater Management District. Monitoring components were biosolids, soils, crops, ground water, and streambed sediments. The monitoring program addresses concerns from the...
Allan D. Randall, Kate Klusman
2004, Open-File Report 2004-1276
One normal episode of pump operation in domestic wells drilled into bedrock in New York typically lasts about 1 minute and lowers the water level about 1 meter. Measurement of water levels in the pumped well before and during pumping and recovery can be completed in 2 to 3 hours...
Susan K. Skagen, Cynthia P. Melcher, Rob Hazelwood
2004, Open-File Report 2004-1452
The importance of migration stopover sites in ensuring that migratory birds successfully accomplish their journeys between breeding and non-breeding ranges has come to the forefront of avian research. Migratory birds that breed in western United States (US) and Canada and overwinter primarily in western Mexico migrate across the arid region...
Kimberly Yates
2004, Open-File Report 2004-1449
The U.S. Geological Survey's Gulf of Mexico Integrated Science - Tampa Bay Study combines the expertise of federal, state, and local partners to address some of the most pressing ecological problems of the Tampa Bay estuary. This project serves as a template for integrated research projects in other coastal ecosystems...
Michael P. Finn, Jason R. Trent
2004, Open-File Report 2004-1394
Scientists routinely accomplish small-scale geospatial modeling in the raster domain, using high-resolution datasets (such as 30-m data) for large parts of continents and low-resolution to high-resolution datasets for the entire globe. Recently, Usery and others (2003a) expanded on the previously limited empirical work with real geographic data by compiling and...
Rodger D. Borcherdt, Malcolm J.S. Johnston, Christopher Dietel, Gary Glassmoyer, Doug Myren, Christopher Stephens
2004, Open-File Report 2004-1376
An integrated array of 11 General Earthquake Observation System (GEOS) stations installed near Parkfield, CA provided on scale broad-band, wide-dynamic measurements of acceleration and volumetric strain of the Parkfield earthquake (M 6.0) of September 28, 2004. Three component measurements of acceleration were obtained at each of the stations. Measurements of...
Matt Gerstenberger, Stefan Wiemer, Lucy Jones
2004, Open-File Report 2004-1390
We have derived a multi-model approach to calculate time-dependent earthquake hazard resulting from earthquake clustering. This file report explains the theoretical background behind the approach, the specific details that are used in applying the method to California, as well as the statistical testing to validate the technique. We...
Patricia M. McCrory, W. W. Danforth, T.F. O’Brien, D.S. Foster
2004, Open-File Report 2001-508
John W. Hillhouse, Robert Morin
2004, Open-File Report 2003-12
James Johnston
2004, Open-File Report 2004-1450
The Tampa Bay Integrated Science Study is an effort by the U.S. Geological Survey (USGS) that combines the expertise of federal, state and local partners to address some of the most pressing ecological problems of the Tampa Bay estuary. This project serves as a template for the application of integrated...
Stephanie L. Ross, David M. Boore, Michael A. Fisher, Arthur D. Frankel, Eric L. Geist, Kenneth W. Hudnut, Robert E. Kayen, Homa J. Lee, William R. Normark, Florence L. Wong
2004, Open-File Report 2004-1286
This report examines the regional seismic and geologic hazards that could affect proposed liquefied natural gas (LNG) facilities in coastal Ventura County, California. Faults throughout this area are thought to be capable of producing earthquakes of magnitude 6.5 to 7.5, which could produce surface fault offsets of as much as...
David C. Prowell, Raymond A. Christopher
2004, Open-File Report 2004-1343
In 1976, the U.S. Geological Survey drilled four holes in Lafayette Park in Washington, D.C. These holes encountered two Coastal Plain units (Quaternary (undifferentiated) and the Lower Cretaceous Potomac Group), and then bottomed in Paleozoic metamorphic bedrock. The stratigraphic relations of the Coastal Plain formations indicate that the Potomac Group...
Peter Hamilton, Burton Jones, John Largier, Charles McGee, Marlene Noble, Kevin Orzech, George Robertson, Leslie Rosenfeld, Jingping Xu
Marlene Noble, editor(s)
2004, Open-File Report 2004-1019
No abstract available....
Tracy J.B. Yager, David B. Smith, James G. Crock
2004, Open-File Report 2004-1388
In January 1999, the U.S. Geological Survey (USGS) began an expanded monitoring program near Deer Trail, Colorado, in cooperation with the Metro Wastewater Reclamation District and the North Kiowa Bijou Groundwater Management District. Monitoring components were biosolids, soils, crops, ground water, and streambed sediment. The monitoring program addresses concerns from...
Peter G. Chirico
2004, Open-File Report 2004-1320
Sandra L. Kinnaman, Leel Knowles Jr.
2004, Open-File Report 2004-1377
This map depicts the potentiometric surface of the Upper Floridan aquifer in the St. Johns River Water Management District and vicinity in May 2001. Potentiometric contours are based on water-level measurements collected at 684 wells during the period May 2 - 30, near the end of the dry season. The...
Peter G. Chirico, Seth D. Tanner
2004, Open-File Report 2004-1321
Explanation The purpose of developing a new 10m resolution DEM of the Shenandoah National Park Region was to more accurately depict geologic structure, surfical geology, and landforms of the Shenandoah National Park Region in preparation for automated landform classification. Previously, only a 30m resolution DEM was available through the National Elevation...
John F. Slack, Karen D. Kelley, Jeffrey L. Clark
2004, Open-File Report 2004-1372
John F. Slack, Jeanine M. Schmidt, Julie A. Dumoulin
2004, Open-File Report 2004-1371
Mark J. Mihalasky, Lorre A. Moyer
2004, Open-File Report 2004-1245
This report describes the origin, generation, and format of tract map databases for deposit types that accompany the metallic mineral resource assessment for the Humboldt River Basin, northern Nevada, (Wallace and others, 2004, Chapter 2). The deposit types include pluton-related polymetallic, sedimentary rock-hosted Au-Ag, and epithermal Au-Ag. The tract maps...
Suzanne W. Nicholson, Connie L. Dicken, Michael P. Foose, Julie Mueller
2004, Open-File Report 2004-1355
The growth in the use of Geographic Information Systems (GIS) has highlighted the need for regional and national digital geologic maps attributed with age and lithology information. Such maps can be conveniently used to generate derivative maps for purposes including mineral-resource assessment, metallogenic studies, tectonic studies, and environmental research....
Viki Bankey, V. J. S. Grauch, Fugro Airborne Surveys Corporation
2004, Open-File Report 2004-1229-B
This CD-ROM contains digital data, image files, and text files describing data formats and survey procedures for aeromagnetic data collected during a helicopter geophysical survey in southern Colorado during October 2003. The survey covers the town of Blanca and surrounding communities in Alamosa and Costilla Counties. Several derivative products from...
Michael J. Byrne, Eduardo Patino
2004, Open-File Report 2004-1265
A hydrologic analysis was made at three canal sites and four tidal sites along the St. Lucie River Estuary in southeastern Florida from 1998 to 2001. The data included for analysis are stage, 15-minute flow, salinity, water temperature, turbidity, and suspended-solids concentration. During the period of record, the estuary experienced...
William H. Schulz, Jonathan P. McKenna
2004, Open-File Report 2004-1357
Logan Cave, located in Benton County, Arkansas, is inhabited by several endangered and threatened species. The cave and surrounding area was designated a National Wildlife Refuge under the control of the U.S. Fish and Wildlife Service (USFWS) in 1989. Cave researchers access the cave through a steep-sided sinkhole entrance, which...