Observations and Modeling of Shallow Fault Creep Along the San Andreas Fault System
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چکیده
منابع مشابه
Localized 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...
متن کاملFault creep along the southern San Andreas from interferometric synthetic aperture radar, permanent scatterers, and stacking
[1] Interferometric synthetic aperture radar (InSAR) provides a practical means of mapping creep along major strike-slip faults. The small amplitude of the creep signal (<10 mm/yr), combined with its short wavelength, makes it difficult to extract from long time span interferograms, especially in agricultural or heavily vegetated areas. We utilize two approaches to extract the fault creep signa...
متن کاملHigh-resolution interseismic velocity data along the San Andreas Fault from GPS and InSAR
[1] We compared four interseismic velocity models of the San Andreas Fault based on GPS observations. The standard deviations of the predicted secular velocity from the four models are larger north of the San Francisco Bay area, near the creeping segment in Central California, and along the San Jacinto Fault and the East California Shear Zone in Southern California. A coherence spectrum analysi...
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...
متن کاملCreep on the Rodgers Creek fault, northern San Francisco Bay area from a 10 year PS-InSAR dataset
[1] Deformation in the northern San Francisco Bay area is dominated by a series of sub-parallel strike-slip faults. Existing GPS observations provide some constraint on the slip rates of these faults, however these have only limited resolution for resolving shallow fault behavior, such as brittle creep. We use a 30 image Permanent Scatterer InSAR (PS-InSAR) dataset spanning the time interval 19...
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تاریخ انتشار 2011