Aftershock asymmetry/rupture directivity among central San Andreas fault microearthquakes
نویسندگان
چکیده
منابع مشابه
Aseismic slip and seismogenic coupling along the central San Andreas Fault
We use high-resolution Synthetic Aperture Radarand GPS-derived observations of surface displacements to derive the first probabilistic estimates of fault coupling along the creeping section of the San Andreas Fault, in between the terminations of the 1857 and 1906 magnitude 7.9 earthquakes. Using a fully Bayesian approach enables unequaled resolution and allows us to infer a high probability of...
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[1] We perform a systematic survey of triggered tremor along the San Andreas Fault in central California for the 31 teleseismic earthquakes with Mw 7.5 since 2001. We identify 10 teleseismic events associated with clear triggered tremor. About 52% of the tremor is concentrated south of Parkfield near Cholame, where ambient tremor has been identified previously, and the rest is widely distribute...
متن کاملModeling evolution of the San Andreas Fault system in northern and central California
[1] We present a three-dimensional finite element thermomechanical model idealizing the complex deformation processes associated with evolution of the San Andreas Fault system (SAFS) in northern and central California over the past 20 Myr. More specifically, we investigate the mechanisms responsible for the eastward (landward) migration of the San Andreas plate boundary over time, a process tha...
متن کاملNonvolcanic tremors deep beneath the San Andreas Fault.
We have discovered nonvolcanic tremor activity (i.e., long-duration seismic signals with no clear P or S waves) within a transform plate boundary zone along the San Andreas Fault near Cholame, California, the inferred epicentral region of the 1857 Fort Tejon earthquake (moment magnitude approximately 7.8). The tremors occur between 20 to 40 kilometers' depth, below the seismogenic zone (the upp...
متن کاملLocalized and distributed creep along the southern San Andreas Fault
We investigate the spatial pattern of surface creep and off-fault deformation along the southern segment of the San Andreas Fault using a combination of multiple interferometric synthetic aperture radar viewing geometries and survey-mode GPS occupations of a dense array crossing the fault. Radar observations from Envisat during the period 2003–2010 were used to separate the pattern of horizonta...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Solid Earth
سال: 2000
ISSN: 0148-0227
DOI: 10.1029/2000jb900129