Source Parameters of the Shallow 2012 Brawley Earthquake, Imperial Valley
نویسندگان
چکیده
منابع مشابه
Source Parameters of the Shallow 2012 Brawley Earthquake , Imperial Valley
Resolving earthquake parameters, especially depth, is difficult for events occurring within basins because of issues involved with separating source properties from propagational path effects. Here, we demonstrate some advantages of using a combination of teleseismic and regional waveform data to improve resolution following a bootstrapping approach. Local SS-S differential arrivals from a fore...
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[1] We investigate the finite rupture processes of twoM> 5 earthquakes in the 2012 Brawley swarm by joint inversion of nearby strong motion and high-rate GPS data. Waveform inversions up to 3 Hz were made possible by using a small event (Mw3.9) for path calibration of the velocity structure. Our results indicate that the first (Mw5.3) event ruptured a strong, concentrated asperity with offsets ...
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Strong-motion displacements, recorded at 33 km (IVC) and 36 km (ELC) from the November 4, 1976 Brawley earthquake, are modeled using the CagniarddeHoop technique. The IVC record consists almost entirely of transversely polarized motion, whereas the ELC record contains an approximately equal proportion of transversely and radially polarized motion. A simplified shear-wave velocity model was dete...
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The Brawley fault zone (BFZ) and the Brawley Seismic Zone constitute the principal transfer zone accommodating strain between the San Andreas and Imperial faults in southernmost California. The BFZ ruptured along with the Imperial fault in the 1940 Mw 6.9 and the 1979 Mw 6.4 earthquakes, although in each case only minor slip apparently occurred on the BFZ; several other episodes of slip and cre...
متن کاملStrong - Motion Modeling of the Imperial Valley Earthquake 573 Qualitative Investigation
Twelve three-component strong-motion displacement records are modeled for the 1979 Imperial Valley earthquake to recover the distribution of slip on the lmperral fault plane. The final model, for which point source responses are calculated by a discrete wavenumber /finite element technique, uses a structure with gradients in material properties rather than layers. The effects of a velocity grad...
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ژورنال
عنوان ژورنال: Bulletin of the Seismological Society of America
سال: 2013
ISSN: 0037-1106
DOI: 10.1785/0120120324