The 2001 Kokoxili (Mw 7.8) earthquake

The 2001 Kokoxili (Mw 7.8) earthquake

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K.T. Walker and P.M. Shearer/IRIS Consortium

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A map showing variation of Rayleigh wave group


The 2001 Kokoxili (Mw 7.8) earthquake ruptured about 400 km of the Kunlun fault in northern Tibet and is one of the longest strike-slip events recorded by modern seismic networks. The contours indicate the intensity of high-frequency seismic radiation as imaged using back-projection of globally recorded P-waves, with the strongest regions plotted in red. Analysis shows that the rupture propagated at ~ 2.6 km/s for the first 120 km and then accelerated to ~ 5.7 km/s, a super-shear (faster than S-wave speed) velocity that continued for at least 290 km away from the epicenter. (Image courtesy of K.T. Walker and P.M. Shearer.)

Date Taken: February 18, 2009
Photographer / Contributor: K.T. Walker and P.M. Shearer

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Seismological_Grand_Challenges, Long_Range_Science_Plan,

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