Joint inversion with both local and teleseismic waveforms for source parameters of the 2010 Kaohsiung earthquake
Joint inversion with both local and teleseismic waveforms for source parameters of the 2010 Kaohsiung earthquake
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发表时间：
2012-07
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通讯作者：
Weiwen Chen;S. Ni;Zhenjie Wang;Xiangfang Zeng;S. Wei
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作者：
Weiwen Chen;S. Ni;Zhenjie Wang;Xiangfang Zeng;S. Wei
本文改进了传统基于近震波形数据的点源震源参数反演的Cut And Paste(CAP)方法,实现了近震Pnl波、面波和远震P波、SH波的联合反演的CAPjoint算法.结果表明，该事件的最佳双偶解为：走向317°，倾角36°，倾角52°。另一个节面为181°、62°、114°，震源深度为21km。我们测试了几个参数对典型机构不同距离数据的灵敏度。然后应用bootstrap方法进行统计，验证了联合反演方法对中强地震震源参数约束的有效性，特别是在局部台站分布稀疏的情况下，效果更好。
We improved the traditional Cut and Paste (CAP) method in inverting point source parameters by combining local Pnl, surface waveforms and teleseismic P and SH waveforms, and then applied the method (CAPjoint) to study the source parameters of the 2010 Kaohsiung earthquake. The result shows that the best double-couple solution of the event is: 317°, 36°, 52° for strike, dip and rake, respectively. The other nodal plane is 181°, 62°, 114° with 21km focal depth. We tested the sensitivities of several parameters for data at different distances with typical mechanisms. Then we applied the bootstrap method to make statistics and verified that the joint inversion method is effective for constraining source parameters of moderate earthquakes, and the effect is especially good when the distribution of local seismic stations is sparse.