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New USGS seismic hazard maps for the United States

By:
, , , , , , , , and
Edited by:
Housner G.W.Chung R.M.

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Abstract

The US Geological Survey (USGS) is preparing new seismic national maps for release in April 1996. The new maps plot probabilistic ground motions for return times of about 500, 1000, and 2500 years. Deterministic (scenario) ground-motion maps are being prepared for selected faults in the western US. Due to the diversity of tectonic settings in the US, mapping methodologies for different regions had to be modified. A four-model approach is used to eliminate the need for drawing seismic source zones to determine seismic activity levels. A logic tree approach is used to incorporate alternative models of seismic hazard and alternative relations of seismic attenuation.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
New USGS seismic hazard maps for the United States
Year Published:
1996
Language:
English
Larger Work Title:
Proceedings of the Conference on Natural Disaster Reduction
First page:
173
Last page:
174
Conference Title:
Proceedings of the 1996 Conference on Natural Disaster Reduction
Conference Location:
Washington, DC, USA
Conference Date:
3 December 1996 through 5 December 1996