2012•Northwestern Seismological JournalRequires access

Using Green Function Database and Quick Moment Tensor Inversion Calculating the Focal Mechanism Solution of Aftershocks of Dachaidan MS6.4 Earthquake in 2008 in Qinghai Province

Yanjie Zhao

Abstract

Through establishing the Green function database,the calculation work in the moment tensors inversion method is reduced,and speed for getting focal mechanism solutions of moderate-small earthquakes is improved.Using this method the focal mechanism solutions for 98 events with ML≥2.0 in 2008,in Qinghai province are calculated.The result is discussed also.The research work is helpful to using regional digital seismograph network data for giving focal mechanism solution of small earthquakes.

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Key concepts: Focal mechanism, Moment tensor, Aftershock, Seismology, Inversion (geology), Seismometer, Geology, Geodesy