Effects of the 1983 Coalinga, California, earthquake on creep along the San Andreas fault
Bulletin of the Seismological Society of America
By: Gerald M. Mavko, Sandra Schulz, and Beth D. Brown
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Abstract
The M//L approximately equals 6. 5 earthquake that occurred near Coalinga, California, on May 2, 1983 induced changes in near-surface fault slip along the San Andreas fault. Coseismic steps were observed by creepmeters along a 200-km section of the San Andreas. some of the larger aftershocks induced additional steps, both right-lateral and left-lateral, and in general the sequence disrupted observed creep at several sites from preseismic long-term patterns. Static dislocation models can approximately explain the magnitudes and distribution of the larger coseismic steps on May 2. The smaller, more distant steps appear to be the abrupt release of accumulated slip, triggered by the coseismic strain changes, but independent of the strain change amplitudes.
Suggested Citation
Mavko, G.M., Schulz, S., Brown, B.D., 1985, Effects of the 1983 Coalinga, California, earthquake on creep along the San Andreas fault: Bulletin of the Seismological Society of America, v. 75, no. 2, p. 475-489, https://doi.org/10.1785/BSSA0750020475.
ISSN: 1943-3573 (online)
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Effects of the 1983 Coalinga, California, earthquake on creep along the San Andreas fault |
| Series title | Bulletin of the Seismological Society of America |
| DOI | 10.1785/BSSA0750020475 |
| Volume | 75 |
| Issue | 2 |
| Year Published | 1985 |
| Language | English |
| Publisher | Seismological Society of America |
| Description | 15 p. |
| First page | 475 |
| Last page | 489 |
| Country | United States |
| State | California |
| City | Coalinga |