Synthetic seismograms for finite sources in spherically symmetric Earth using normal-mode summation

查看全文 作　　者：Tianshi [1]Liu;Haiming [1]Zhang

机构地区：[1]Department of Geophysics,School of Earth and Space Sciences,Peking University

出　　处：《Earthquake Science》索引2017年第30卷第3期,共9页

基　　金：supported by the National Natural Science Foundation of China (Grant No. 41674050);MOST grant (2012CB417301) 摘　　要：Normal-mode summation is the most rapidly used method in calculating synthetic seismograms. However, normal-mode summation is mostly applied to point sources. For earthquakes triggered by faults extending for as long as several 100 km, the seismic waves are usually simulated by point source summation. In this paper, we attempt to follow a different route, i.e., directly calculate the excitation of each mode, and use normal-mode summation to obtain the seismogram. Furthermore, we assume the finite source to be a ‘‘line source'' and numerically calculate the transverse component of synthetic seismograms for vertical strike-slip faults. Finally, we analyze the features in the Love waves excited by finite faults. 关键词：正常模求和震动合成对称球状分析特征数字地

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Synthetic seismograms for finite sources in spherically symmetric Earth using normal-mode summation

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