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Page 282, results 7026 - 7050

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Photographs of the sea floor in western Massachusetts Bay, offshore of Boston, Massachusetts, July, 1999
Benjamin T. Gutierrez, Bradford Butman, Dann S. Blackwood
2001, Open-File Report 2000-427
This CD-ROM contains photographs and sediment sample analyses of the sea floor obtained at 142 sites in western Massachusetts Bay (Figure 1) during a research cruise (USGS cruise ISBL99024) aboard the Fishing Vessel (FV) Isabel S. (Figure 2) conducted July 18-21, 1999. These photographs and samples provide critical ground...
Assessment of landslide hazards resulting from the February 13, 2001, El Salvador earthquake; a report to the government of El Salvador and the U. S. Agency for International Development
Rex L. Baum, Anthony J. Crone, Demetreo Escobar, Edwin L. Harp, Jon J. Major, Mauricio Martinez, Carlos Pullinger, Mark E. Smith
2001, Open-File Report 2001-119
On February 13, 2001, a magnitude 6.5 earthquake occurred about 40 km eastsoutheast of the capital city of San Salvador in central El Salvador and triggered thousands of landslides in the area east of Lago de Ilopango. The landslides are concentrated in a 2,500-km2 area and are particularly abundant in areas underlain by thick deposits of poorly consolidated, late Pleistocene and...
The radiated seismic energy and apparent stress of interplate and intraplate earthquakes at subduction zone environments; implications for seismic hazard estimation
George L. Choy, John L. Boatwright, Stephen H. Kirby
2001, Open-File Report 2001-5
The radiated seismic energies (ES) of 980 shallow subduction-zone earthquakes with magnitudes ? 5.8 are used to examine global patterns of energy release and apparent stress. In contrast to traditional methods which have relied upon empirical formulas, these energies are computed through direct spectral analysis of broadband seismic waveforms. Energy...
Simple Techniques For Assessing Impacts Of Oil And Gas Operations On Public Lands: A Field Evaluation Of A Photoionization Detector (PID) At A Condensate Release Site, Padre Island National Seashore, Texas
James K. Otton, Robert A. Zielinski
2001, Open-File Report 2001-183
Simple, cost-effective techniques are needed for land managers to assess the environmental impacts of oil and gas production activities on public lands, so that sites may be prioritized for remediation or for further, more formal assessment. Field-portable instruments provide real-time data and allow the field investigator to extend an assessment...
A comparative analysis of hazard models for predicting debris flows in Madison County, Virginia
Meghan M. Morrissey, Gerald F. Wieczorek, Benjamin A. Morgan
2001, Open-File Report 2001-67
During the rainstorm of June 27, 1995, roughly 330-750 mm of rain fell within a sixteen-hour period, initiating floods and over 600 debris flows in a small area (130 km2) of Madison County, Virginia. Field studies showed that the majority (70%) of these debris flows initiated with a thickness...
Vegetative resistance to flow in South Florida: Summary of vegetation sampling in Taylor Slough, Everglades National Park, September 1997–July 1998
N. B. Rybicki, J. T. Reel, H. Ruhl, P. A. Gammon, Virginia Carter
2001, Open-File Report 2001-102
The U.S. Geological Survey is one of many agencies providing scientific support to the effort to restore the South Florida Everglades. In September and November 1997 and July 1998, vegetation was sampled at selected sites in the Everglades as part of a study to quantify vegetative resistance to flow. The...
Statistical Summary of Hydrologic and Water-Quality Data from the Halawa, Haiku, and Kaneohe Drainage Basins Before, During, and After H-3 Highway Construction, Oahu, Hawaii, 1983-99
Michael F. Wong, Stacie T. M. Young
2001, Open-File Report 2001-64
This report provides statistical summaries of rainfall, streamflow, suspended-sediment, and water-quality data collected in the Halawa, Haiku, and Kaneohe drainage basins before, during, and after construction of the H-3 Highway on the island of Oahu, Hawaii. Methods of data collection also are described. Data collected during water years 1983 through...
Index of stations— Surface-water data-collection network of Texas, September 1999
2001, Open-File Report 2001-103
As of September 30, 1999, the surface-water data-collection network of Texas (table 1) included 321 continuous-record streamflow stations (D), 20 continuous-record gage-height only stations (G), 24 crest-stage partial-record stations (C), 40 floodhydrograph partial-record stations (H), 25 low-flow partial-record stations (L), 1 continuous-record temperature station (M1), 25 continuous-record temperature and specific...
Chemical analysis and modes of occurrence of selected trace elements in a Powder River basin coal and its corresponding simulated cleaned coal
Curtis A. Palmer, Stanley J. Mroczkowski, Allan Kolker, Robert B. Finkelman, John H. Bullock Jr.
2001, Open-File Report 2000-323
This report provides semi-quantitative data on modes of occurrence of 19 elements in as-mined Powder River Basin coal and its corresponding simulated cleaned coal. The data are in support of the project "Prediction of Trace Element Removal from Coal" --a Cooperative Research and Development Agreement (CRADA) with CQ Inc. The...
Geologic map and database of the Roseburg 30' x 60' quadrangle, Douglas and Coos Counties, Oregon
Ray E. Wells, A. S. Jayko, A. R. Niem, G. Black, T. Wiley, E. Baldwin, K. M. Molenaar, K.L. Wheeler, C. B. DuRoss, R. W. Givler
2001, Open-File Report 2000-376
The Roseburg 30' x 60' Quadrangle covers the southeastern margin of the Oregon Coast Range and its tectonic boundary with Mesozoic terranes of the Klamath Mountains (see figures 1 and 2 in pamphlet, also shown on map sheet). The geologic framework of the Roseburg area was established by the pioneering...
Characterization of Northern California petroleum by stable carbon isotopes
Paul G. Lillis, Leslie B. Magoon, Richard G. Stanley, Robert J. McLaughlin, Augusta Warden
2001, Open-File Report 99-164
The purpose of this study is to characterize natural occurrences of petroleum at the surface and in the subsurface within northern California in order to define and map petroleum systems for U.S. Geological Survey energy resource assessments. Furthermore, the chemical characterization and mapping of natural petroleum occurrences could also be...