Publications
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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 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
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...
Authors
Rex L. Baum, Anthony J. Crone, Demetreo Escobar, Edwin L. Harp, Jon J. Major, Mauricio Martinez, Carlos Pullinger, Mark E. Smith
Did you feel it? Community-made earthquake shaking maps Did you feel it? Community-made earthquake shaking maps
Since the early 1990's, the magnitude and location of an earthquake have been available within minutes on the Internet. Now, as a result of work by the U.S. Geological Survey (USGS) and with the cooperation of various regional seismic networks, people who experience an earthquake can go online and share information about its effects to help create a map of shaking intensities and damage...
Authors
D.J. Wald, L. A. Wald, J. W. Dewey, Vince Quitoriano, Elisabeth Adams
The rainfall-triggered landslide and flash-flood disaster in northern Venezuela, December 1999 The rainfall-triggered landslide and flash-flood disaster in northern Venezuela, December 1999
Rainstorms in December 1999 induced thousands of landslides along the northern slopes of the Cordillera de la Costa mountain range principally in the state of Vargas, Venezuela. Rainfall accumulation of 293 millimeters during the first 2 weeks ofDecember was followed by an additional 911 millimeters of rainfall on December 14 through 16. The landslides and floods inundated coastal...
Authors
Matthew C. Larsen, Gerald F. Wieczorek, L.S. Eaton, Heriberto Torres-Sierra
Natural hazards on alluvial fans: the debris flow and flash flood disaster of December 1999, Vargas state, Venezuela Natural hazards on alluvial fans: the debris flow and flash flood disaster of December 1999, Vargas state, Venezuela
Large populations live on or near alluvial fans in locations such as Los Angeles, California, Salt Lake City, Utah, Denver, Colorado, and lesser known areas such as Sarno, Italy, and Vargas, Venezuela. Debris flows and flash floods occur episodically in these alluvial fan environments, and place many communities at high risk during intense and prolonged rainfall. In December 1999...
Authors
Matthew C. Larsen, Gerald F. Wieczorek, L.S. Eaton, Heriberto Torres-Sierra
Relocation of Wyoming mine production blasts using calibration explosions Relocation of Wyoming mine production blasts using calibration explosions
An important requirement for a comprehensive seismic monitoring system is the capability to accurately locate small seismic events worldwide. Accurate event location can improve the probability of determining whether or not a small event, recorded predominantly by local and regional stations, is a nuclear explosion. For those portions of the earth where crustal velocities are not well...
Authors
Carol A. Finn, Gordon D. Kraft, Matthew S. Sibol, Ronald L. Jones, Mark E. Pulaski
Remote rainfall sensing for landslide hazard analysis Remote rainfall sensing for landslide hazard analysis
Methods of assessing landslide hazards and providing warnings are becoming more advanced as remote sensing of rainfall provides more detailed temporal and spatial data on rainfall distribution. Two recent landslide disasters are examined noting the potential for using remotely sensed rainfall data for landslide hazard analysis. For the June 27, 1995, storm in Madison County, Virginia...
Authors
Gerald F. Wieczorek, Harry McWreath, Clay Davenport
Landslide response to Hurricane Mitch rainfall in seven study areas in Nicaragua Landslide response to Hurricane Mitch rainfall in seven study areas in Nicaragua
No abstract available.
Authors
Susan H. Cannon, Kathleen M. Haller, Ingrid Ekstrom, Eugene S. Schweig, Graziella Devoli, David W. Moore, Sharon A. Rafferty, Arthur C. Tarr
Compilation of post-wildfire runoff-event data from the Western United States Compilation of post-wildfire runoff-event data from the Western United States
No abstract available.
Authors
Erica R. Bigio, Susan H. Cannon
Debris-flow and flooding hazards associated with the December 1999 storm in coastal Venezuela and strategies for mitigation Debris-flow and flooding hazards associated with the December 1999 storm in coastal Venezuela and strategies for mitigation
Heavy rainfall from the storm of December 14-16, 1999 triggered thousands of landslides on steep slopes of the Sierra de Avila north of Caracas, Venezuela. In addition to landslides, heavy rainfall caused flooding and massive debris flows that damaged coastal communities in the State of Vargas along the Caribbean Sea. Examination of the rainfall pattern obtained from the GOES-8 satellite...
Authors
G. F. Wieczorek, M. C. Larsen, L.S. Eaton, B. A. Morgan, J. L. Blair
Wildfire-related debris-flow initiation processes, Storm King Mountain, Colorado Wildfire-related debris-flow initiation processes, Storm King Mountain, Colorado
A torrential rainstorm on September 1, 1994 at the recently burned hillslopes of Storm King Mountain, CO, resulted in the generation of debris flows from every burned drainage basin. Maps (1:5000 scale) of bedrock and surficial materials and of the debris-flow paths, coupled with a 10-m Digital Elevation Model (DEM) of topography, are used to evaluate the processes that generated fire...
Authors
S.H. Cannon, R. M. Kirkham, M. Parise