Slip history of the 2003 San Simeon earthquake constrained by combining 1-Hz GPS, strong motion, and teleseismic data
Geophysical Research Letters
By: C. Ji, K.M. Larson, Y. Tan, K.W. Hudnut, and K. Choi
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Abstract
The slip history of the 2003 San Simeon earthquake is constrained by combining strong motion and teleseismic data, along with GPS static offsets and 1-Hz GPS observations. Comparisons of a 1-Hz GPS time series and a co-located strong motion data are in very good agreement, demonstrating a new application of GPS. The inversion results for this event indicate that the rupture initiated at a depth of 8.5 km and propagated southeastwards with a speed ???3.0 km/sec, with rake vectors forming a fan structure around the hypocenter. We obtained a peak slip of 2.8 m and total seismic moment of 6.2 ?? 1018 Nm. We interpret the slip distribution as indicating that the hanging wall rotates relative to the footwall around the hypocenter, in a sense that appears consistent with the shape of the mapped fault trace. Copyright 2004 by the American Geophysical Union.
Suggested Citation
Ji, C., Larson, K., Tan, Y., Hudnut, K., and Choi, K., 2004, Slip history of the 2003 San Simeon earthquake constrained by combining 1-Hz GPS, strong motion, and teleseismic data: Geophysical Research Letters, v. 31, no. 17, https://doi.org/10.1029/2004GL020448.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Slip history of the 2003 San Simeon earthquake constrained by combining 1-Hz GPS, strong motion, and teleseismic data |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/2004GL020448 |
| Volume | 31 |
| Issue | 17 |
| Publication Date | September 15, 2004 |
| Year Published | 2004 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Geophysical Research Letters |