Moho structure across the San Jacinto fault zone: Insights into strain localization at depth
نویسندگان
چکیده
منابع مشابه
Abundant off-fault seismicity and orthogonal structures in the San Jacinto fault zone
The trifurcation area of the San Jacinto fault zone has produced more than 10% of all earthquakes in southern California since 2000, including the June 2016 Mw (moment magnitude) 5.2 Borrego Springs earthquake. In this area, the fault splits into three subparallel strands and is associated with broad VP /VS anomalies. We synthesize spatiotemporal properties of historical background seismicity a...
متن کاملInitiation of the San Jacinto Fault and its Interaction with the San Andreas Fault: Insights from Geodynamic Modeling
The San Andreas Fault (SAF) is the Pacific-North American plate boundary, yet in southern California a significant portion of the relative plate motion is accommodated by the San Jacinto Fault (SJF). Here we investigate the initiation of the SJF and its interaction with the SAF in a threedimensional visco-elasto-plastic finite-element model. The model results show that the restraining bend of t...
متن کاملA Re-examination of Historic Earthquakes in the San Jacinto Fault Zone, California
The high level of seismic activity and the potential for large earthquakes in the San Jacinto fault zone, southern California, make it desirable to have accurate locations and source parameters for as many previous events as possible. Prior to the installation of a dense seismic network in this region, earthquakes were located using only a few stations with generally poor azimuthal coverage res...
متن کاملLow-velocity damaged structure of the San Andreas Fault at Parkfield from fault zone trapped waves
[1] We used dense linear seismic arrays across and along the San Andreas Fault (SAF) at Parkfield, California to record fault zone trapped waves generated by explosions and microearthquakes in 2002. Prominent trapped waves appeared at stations close to the SAF main fault trace while some energy was trapped in the north strand at the array site. Observations and 3-D finitedifference simulations ...
متن کاملDeep creep as a cause for the excess seismicity along the San Jacinto fault
Since 1890, the San Jacinto fault in Southern California has been the site of eleven earthquakes of moderate magnitude (6 < M < 7) and tens of thousands of small earthquakes, but none of large magnitude1,2. This activity contrasts sharply with the seismic quiescence of the nearby southern San Andreas fault. Although this fault slips at a rate higher than that associated with the San Jacinto fau...
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ژورنال
عنوان ژورنال: Lithosphere
سال: 2014
ISSN: 1947-4253,1941-8264
DOI: 10.1130/l295.1