| Abstract: | For the purpose of sensitivity testing and illuminating nonconsensus components of time-dependent models, the California Department of Conservation, Division of Mines and Geology (CDMG) has assembled a time-dependent version of its statewide probabilistic seismic hazard (PSH) model for California. The model incorporates available consensus information from within the earth-science community, except for a few faults or fault segments where consensus information is not available. For these latter faults, published information has been incorporated into the model. As in the 1996 CDMG/U.S. Geological Survey (USGS) model, the time-dependent models incorporate three multisegment ruptures: a 1906, an 1857, and a southern San Andreas earthquake. Sensitivity tests are presented to show the effect on hazard and expected damage estimates of (1) intrinsic (aleatory) sigma, (2) multisegment (cascade) vs. independent segment (no cascade) ruptures, and (3) time-dependence vs. time-independence. Results indicate that (1) differences in hazard and expected damage estimates between time-dependent and independent models increase with decreasing intrinsic sigma, (2) differences in hazard and expected damage estimates between full cascading and not cascading are insensitive to intrinsic sigma, (3) differences in hazard increase with increasing return period (decreasing probability of occurrence), and (4) differences in moment-rate budgets increase with decreasing intrinsic sigma and with the degree of cascading, but are within the expected uncertainty in PSH time-dependent modeling and do not always significantly affect hazard and expected damage estimates. |
| Genre: | Article |
| ProdID: | 70022900 |
| Citation Author: | Cramer, C. H.; Petersen, M. D.; Cao, T.; Toppozada, T. R.; Reichle, M. |
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| Citation End Page: | 21 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Bulletin of the Seismological Society of America |
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| Citation Number Of Pages: | 21 |
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| Citation Search Results Text: | A time-dependent probabilistic seismic-hazard model for California; 2000; Article; Journal; Bulletin of the Seismological Society of America; Cramer, C. H.; Petersen, M. D.; Cao, T.; Toppozada, T. R.; Reichle, M. |
| Citation Start Page: | 1 |
| Citation Volume: | 90 |
| Citation Year: | 2000 |
| Type: | citation/reference |
| Text: | A time-dependent probabilistic seismic-hazard model for California; 2000; Article; Journal; Bulletin of the Seismological Society of America; Cramer, C. H.; Petersen, M. D.; Cao, T.; Toppozada, T. R.; Reichle, M. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 2000 00:00 -0600 |
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