Publications
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C-language software for computing strong ground motion metrics and seismograph self noise C-language software for computing strong ground motion metrics and seismograph self noise
No abstract available.
Authors
J.R. Evans, R.L. Nigbor, C. R. Hutt
Calibrated Landsat ETM+ nonthermal-band image mosaics of Afghanistan Calibrated Landsat ETM+ nonthermal-band image mosaics of Afghanistan
In 2005, the U.S. Agency for International Development and the U.S. Trade and Development Agency contracted with the U.S. Geological Survey to perform assessments of the natural resources within Afghanistan. The assessments concentrate on the resources that are related to the economic development of that country. Therefore, assessments were initiated in oil and gas, coal, mineral...
Authors
Philip A. Davis
Report of the workshop on Extreme Ground Motions at Yucca Mountain, August 23-25, 2004 Report of the workshop on Extreme Ground Motions at Yucca Mountain, August 23-25, 2004
This Workshop has its origins in the probabilistic seismic hazard analysis (PSHA) for Yucca Mountain, the designated site of the underground repository for the nation's high-level radioactive waste. In 1998 the Nuclear Regulatory Commission's Senior Seismic Hazard Analysis Committee (SSHAC) developed guidelines for PSHA which were published as NUREG/CR-6372, 'Recommendations for...
Authors
Thomas C. Hanks, N. A. Abrahamson, M. Board, D.M. Boore, J.N. Brune, C.A. Cornell
By
Geology, Energy, and Minerals Mission Area, Natural Hazards Mission Area, Earthquake Hazards Program, Energy Resources Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Earthquake Science Center, Geologic Hazards Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Overview of the Opportunity Mars Exploration Rover Mission to Meridiani Planum: Eagle Crater to Purgatory Ripple Overview of the Opportunity Mars Exploration Rover Mission to Meridiani Planum: Eagle Crater to Purgatory Ripple
The Mars Exploration Rover Opportunity touched down at Meridiani Planum in January 2004 and since then has been conducting observations with the Athena science payload. The rover has traversed more than 5 km, carrying out the first outcrop‐scale investigation of sedimentary rocks on Mars. The rocks of Meridiani Planum are sandstones formed by eolian and aqueous reworking of sand grains...
Authors
S. W. Squyres, R. E. Arvidson, D. Bollen, J.F. Bell, J. Bruckner, N.A. Cabrol, W. M. Calvin, M. H. Carr, P. R. Christensen, B. C. Clark, L. Crumpler, D.J. Des Marais, C. D'Uston, T. Economou, J. Farmer, W.H. Farrand, W. Folkner, R. Gellert, T.D. Glotch, M. Golombek, S. Gorevan, J. A. Grant, R. Greeley, J. Grotzinger, Kenneth E. Herkenhoff, S. Hviid, J. R. Johnson, G. Klingelhoefer, A.H. Knoll, G. Landis, M. Lemmon, Ron Li, M.B. Madsen, M.C. Malin, S. M. McLennan, H.Y. McSween, D. W. Ming, J. Moersch, R.V. Morris, T. Parker, J. W. Rice, L. Richter, R. Rieder, C. Schroeder, M. Sims, M. Smith, P. Smith, Laurence A. Soderblom, R. Sullivan, N.J. Tosca, H. Wänke, T. Wdowiak, M. Wolff, A. Yen
National Geomagnetism Program: Current Status & Five-Year Plan, 2006-2010 National Geomagnetism Program: Current Status & Five-Year Plan, 2006-2010
Executive Summary: The U.S. Geological Survey's Geomagnetism Program serves the scientific community and the broader public by collecting and distributing magnetometer data from an array of ground-based observatories and by conducting scientific analysis on those data. Preliminary, variational time-series can be collected and distributed in near-real time, while fully calibrated...
Authors
Jeffrey J. Love
South Carolina Coastal Erosion Study: Data report for observations, October 2003 - April 2004 South Carolina Coastal Erosion Study: Data report for observations, October 2003 - April 2004
Oceanographic observations have been made at nine locations in Long Bay, South Carolina from October 2003 through April 2004. These sites are centered around a shore-oblique sand feature that is approximately 10 km long, 2 km wide, and in excess of 3 m thick. The observations were collected through a collaborative effort with the U.S. Geological Survey, the University of South Carolina...
Authors
Charlene M. Sullivan, John C. Warner, Marinna A. Martini, George Voulgaris, Paul Work, Kevin A. Haas, Daniel Hanes
Post-Wildfire Sedimentation in Saguaro National Park, Rincon Mountain District, and Effects on Lowland Leopard Frog Habitat Post-Wildfire Sedimentation in Saguaro National Park, Rincon Mountain District, and Effects on Lowland Leopard Frog Habitat
The Rincon Mountain District of Saguaro National Park occupies about 272 square kilometers of mountains, canyons, and alluvial fans in southeastern Arizona just east of Tucson. The park contains some of the last remaining habitat in the Tucson Basin of the lowland leopard frog that lives in the bedrock pools called tinajas in canyons at elevations between 850 and 1,800 meters. Those...
Authors
John T.C. Parker
Submarine ground-water discharge: nutrient loading and nitrogen transformations Submarine ground-water discharge: nutrient loading and nitrogen transformations
Eutrophication of coastal waters due to nonpoint source land-derived nitrogen (N) loads is a worldwide phenomenon and perhaps the greatest agent of change altering coastal ecology (National Research Council, 2000; Howarth and others, 2000). Within the United States, a majority of estuaries have been determined to be moderately to severely impaired by eutrophication associated with...
Authors
Kevin D. Kroeger, Peter W. Swarzenski, John Crusius, John F. Bratton, Matthew A. Charette
Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2005 Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2005
The Alaska Volcano Observatory (AVO), a cooperative program of the U.S. Geological Survey, the Geophysical Institute of the University of Alaska Fairbanks, and the Alaska Division of Geological and Geophysical Surveys, has maintained seismic monitoring networks at historically active volcanoes in Alaska since 1988 (Figure 1). The primary objectives of the seismic program are the real...
Authors
James P. Dixon, Scott D. Stihler, John A. Power, Guy Tytgat, Steve Estes, Stephen R. McNutt
Reconnaissance investigation of Caribbean extreme wave deposits — Preliminary observations, interpretations, and research directions Reconnaissance investigation of Caribbean extreme wave deposits — Preliminary observations, interpretations, and research directions
This report presents an overview of preliminary geological investigations and recommended future research activities in the Caribbean region pertaining to coastal hazards with an emphasis on establishing tsunami risk for U.S. territories. Fieldwork was conducted in March 2006 on the islands of Bonaire, Puerto Rico, and Guadeloupe to evaluate the stratigraphic records of extreme wave...
Authors
Robert A. Morton, Bruce M. Richmond, Bruce E. Jaffe, Guy Gelfenbaum
Evaluation of some software measuring displacements using GPS in real-time Evaluation of some software measuring displacements using GPS in real-time
For the past decade, the USGS has been monitoring deformation at various locations in the western United States using continuous GPS. The main focus of these measurements are estimates of displacement averaged over one day. Essentially, these consist of recording at 30 seconds intervals the carrier-frequency phase-data (equivalent to travel-time) between a GPS receiver and the GPS...
Authors
John O. Langbein
Tephra deposits for the past 2600 years from Irazú Volcano, Costa Rica: Chapter 12 in Volcanic hazards in Central America Tephra deposits for the past 2600 years from Irazú Volcano, Costa Rica: Chapter 12 in Volcanic hazards in Central America
No abstract available.
Authors
S.K. Clark, M. K. Reagan, D.A. Trimble