منابع مشابه
A three-dimensional crustal seismic velocity model for southern California from a composite event method
[1] We present a new crustal seismic velocity model for southern California derived from P and S arrival times from local earthquakes and explosions. To reduce the volume of data and ensure a more uniform source distribution, we compute ‘‘composite event’’ picks for 2597 distributed master events that include pick information for other events within spheres of 2 km radius. The approach reduces ...
متن کاملCrustal anisotropy across northern Japan from receiver functions
Northern Japan is a tectonically active area, with the presence of several volcanoes, and with frequent earthquakes among which the destructive Mw = 8.9-9.0 Tohoku-oki occurred on 11 March 2011. Tectonic activity leaves an imprint on the crustal structures, on both the upper and the lower layers. To investigate the crust in northern Japan, we construct a receiver function data set using telese...
متن کاملEstimating crustal seismic anisotropy with a joint analysis of radial and transverse receiver function data
S U M M A R Y We developed an integrated technique for estimating crustal anisotropy with a horizontal axis using radial (R) and transverse (T) receiver functions. The technique includes computing three individual and one joint objective function (JOF) and a reliability analysis of the estimated anisotropy. The individual objective functions (IOFs) are designed to: (1) maximize the peak energy ...
متن کاملSeismic evidence of nonlinear crustal deformation during a large slow slip event in Mexico
Repeated cross-correlations of ambient seismic noise indicate a long-term seismic velocity change associated with the 2006 M7.5 slow-slip event (SSE) in the Guerrero region, Mexico. Because the SSE does not radiate seismic waves, the measured velocity change cannot be associated with the response of superficial soil layers to strong shaking as observed for regular earthquakes. The perturbation ...
متن کاملNucleation and early seismic propagation of small and large events in a crustal earthquake model
[1] Earthquake nucleation and early seismic propagation are studied in a two-dimensional strike-slip fault model with depth-variable properties. The fault is governed by the Dieterich-Ruina rate and state friction law. We use an efficient and rigorous numerical procedure for elastodynamic analysis of earthquake sequences on slowly loaded faults developed by Lapusta et al. [2000]. We find that f...
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ژورنال
عنوان ژورنال: Tectonophysics
سال: 2011
ISSN: 0040-1951
DOI: 10.1016/j.tecto.2010.07.011