The 2014 national seismic-hazard model for the conterminous United States incorporates new scientific results and important model adjustments. The current model includes updates to the historical catalog, which is spatially smoothed using both fixed-length and adaptive-length smoothing kernels. Fault-source characterization improved by adding faults, revising rates of activity, and incorporating new results from combined inversions of geologic and geodetic data. The update also includes a new suite of published ground motion models. Changes in probabilistic ground motion are generally less than 10% in most of the Intermountain West compared to the prior assessment, and ground-motion hazard in four Intermountain West cities illustrates the range and magnitude of change in the region. Seismic hazard at reference sites in Boise and Reno increased as much as 10%, whereas hazard in Salt Lake City decreased 5–6%. The largest change was in Las Vegas, where hazard increased 32–35%.
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Research Article|
December 01, 2015
Seismic Hazard in the Intermountain West
Kathleen M. Haller;
Kathleen M. Haller
a) U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225
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Morgan P. Moschetti, M.EERI;
Morgan P. Moschetti, M.EERI
a) U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225
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Charles S. Mueller;
Charles S. Mueller
a) U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225
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Sanaz Rezaeian;
Sanaz Rezaeian
a) U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225
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Mark D. Petersen, M.EERI;
Mark D. Petersen, M.EERI
a) U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225
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Yuehua Zeng
Yuehua Zeng
a) U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225
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Kathleen M. Haller
a) U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225
Morgan P. Moschetti, M.EERI
a) U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225
Charles S. Mueller
a) U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225
Sanaz Rezaeian
a) U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225
Mark D. Petersen, M.EERI
a) U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225
Yuehua Zeng
a) U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225
Publisher: Earthquake Engineering Research Institute
Received:
04 Jul 2013
Accepted:
25 Aug 2014
First Online:
27 Oct 2022
Online ISSN: 1944-8201
Print ISSN: 8755-2930
Earthquake Spectra (2015) 31 (1_suppl): S149–S176.
Article history
Received:
04 Jul 2013
Accepted:
25 Aug 2014
First Online:
27 Oct 2022
Citation
Kathleen M. Haller, Morgan P. Moschetti, Charles S. Mueller, Sanaz Rezaeian, Mark D. Petersen, Yuehua Zeng; Seismic Hazard in the Intermountain West. Earthquake Spectra 2015;; 31 (1_suppl): S149–S176. doi: https://doi.org/10.1193/103114EQS173M
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