Estimating earthquake-rupture rates on a fault or fault system
Bulletin of the Seismological Society of America
By: E. H. Field and M.T. Page
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Abstract
Previous approaches used to determine the rates of different earthquakes on a fault have made assumptions regarding segmentation, have been difficult to document and reproduce, and have lacked the ability to satisfy all available data constraints. We present a relatively objective and reproducible inverse methodology for determining the rate of different ruptures on a fault or fault system. The data used in the inversion include slip rate, event rate, and other constraints such as an optional a priori magnitude-frequency distribution. We demonstrate our methodology by solving for the long-term rate of ruptures on the southern San Andreas fault. Our results imply that a Gutenberg-Richter distribution is consistent with the data available for this fault; however, more work is needed to test the robustness of this assertion. More importantly, the methodology is extensible to an entire fault system (thereby including multifault ruptures) and can be used to quantify the relative benefits of collecting additional paleoseismic data at different sites.
Suggested Citation
Field, E.H., Page, M., 2011, Estimating earthquake-rupture rates on a fault or fault system: Bulletin of the Seismological Society of America, v. 101, no. 1, p. 79-92, https://doi.org/10.1785/0120100004.
ISSN: 1943-3573 (online)
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Estimating earthquake-rupture rates on a fault or fault system |
| Series title | Bulletin of the Seismological Society of America |
| DOI | 10.1785/0120100004 |
| Volume | 101 |
| Issue | 1 |
| Publication Date | January 26, 2011 |
| Year Published | 2011 |
| Language | English |
| Publisher | Seismological Society of America |
| Publisher location | El Cerrito, CA |
| Contributing office(s) | Earthquake Science Center |
| Description | 14 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Bulletin of the Seismological Society of America |
| First page | 79 |
| Last page | 92 |