Physics
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3117608j&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 17, CiteID L17608
Physics
17
Geodesy And Gravity: Seismic Deformations (7205), Seismology: Earthquake Ground Motions And Engineering, Tectonophysics: Dynamics, Seismotectonics
Scientific paper
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.
Choi Kyuhong
Hudnut Kenneth W.
Ji Chen
Larson Kristine M.
Tan Ying
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