NEHRP Clearinghouse
- Title
- Evaluation of Hazardous Faults in the Intermountain West Region: Summary and Recommendations of a Workshop.
- File
- PB2009116206.pdf
- Author(s)
- Crone, A. J.; Haller, K. M.; Maharrey, J. Z.
- Source
- January 2009, 75 p.
- Identifying Number(s)
- USGS-OFR-2009-1140
- Abstract
- The U.S. Geological Surveys (USGS) Earthquake Hazards Program (EHP) has the responsibility to provide nationwide information and knowledge about earthquakes and earthquake hazards as a step to mitigating earthquake-related losses. As part of this mission, USGS geologists and geophysicists continue to study faults and structures that have the potential to generate large and damaging earthquakes. In addition, the EHP, through its External Grants Program (hereinafter called Program), supports similar studies by scientists employed by state agencies, academic institutions, and independent employers. For the purposes of earthquake hazard investigations, the Nation is geographically subdivided into tectonic regions. One such region is the Intermountain West (IMW), which here is broadly defined as starting at the eastern margin of the Rocky Mountains in New Mexico, Colorado, Wyoming, and Montana and extending westward to the east side of the Sierra Nevada mountains in eastern California and into the Basin and Range-High Plateaus of eastern Oregon and Washington. The IMW contains thousands of faults that have moved in Cenozoic time, hundreds of which have evidence of Quaternary movement, and thus are considered to be potential seismic sources.
- Keywords
- Intermountain West Region; Evaluation; Investigations; Grants program; US Geological Survey (USGS); Workshop; Earthquake Hazards Program; Earthquake Hazards Program (EHP); Hazardous faults; Recommendations