Variations in creep rate along the Hayward Fault, California, interpreted as changes in depth of creep
Geophysical Research Letters
By: R. W. Simpson, J. J. Lienkaemper, and J.S. Galehouse
Links
- More information: Publisher Index Page (via DOI)
- Open Access Version: Publisher Index Page
- Download citation as: RIS | Dublin Core
Abstract
Variations ill surface creep rate along the Hayward fault are modeled as changes in locking depth using 3D boundary elements. Model creep is driven by screw dislocations at 12 km depth under the Hayward and other regional faults. Inferred depth to locking varies along strike from 4-12 km. (12 km implies no locking.) Our models require locked patches under the central Hayward fault, consistent with a M6.8 earthquake in 1868, but the geometry and extent of locking under the north and south ends depend critically on assumptions regarding continuity and creep behavior of the fault at its ends. For the northern onshore part of the fault, our models contain 1.4-1.7 times more stored moment than the model of Bu??rgmann et al. [2000]; 45-57% of this stored moment resides in creeping areas. It is important for seismic hazard estimation to know how much of this moment is released coseismically or as aseismic afterslip.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Variations in creep rate along the Hayward Fault, California, interpreted as changes in depth of creep |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/2001GL012979 |
| Volume | 28 |
| Issue | 11 |
| Year Published | 2001 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Geophysical Research Letters |
| First page | 2269 |
| Last page | 2272 |
| Google Analytic Metrics | Metrics page |