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Seismic imaging together with global positioning system (GPS) and crustal stress data analyses show that the Mw7.9 2008 Wenchuan earthquake occurred within a distinct area of high crustal stress (∼17.5MPa) and high Poisson's ratio (7–10%) anomalies centered on the Longmen-Shan (Shan means Mountain in Chinese) tectonic fault belt. Low P-wave and S-wave velocities in the southwest (SW) segment contrast...
We determined the high-resolution 3-D P-wave velocity structure under the Okinawa Trough in the region between South Taiwan and North Kyushu (Japan) by inverting 102,511 absolute travel-time data from 5012 local earthquakes and 29,153 relative travel-time residuals calculated from 1873 teleseismic events. For the first time, a combined data set recorded simultaneously by three seismographic networks...
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