| 用P波波形资料反演中强地震地震矩张量的方法 |
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| 引用本文： | 姚振兴,郑天愉,温联星.用P波波形资料反演中强地震地震矩张量的方法[J].地球物理学报,1994,37(1):34-44. |
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| 作者姓名： | 姚振兴 郑天愉 温联星 |
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| 作者单位： | 中国科学院地球物理研究所, 北京 100101 |
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| 摘 要： | 本文给出了利用不同震中距范围（３°-９０°）的长周期Ｐ波记录资料，通过波形拟合和反演确定地震矩张量的方法．在求解过程中，不引入矩张量的迹为零这一约束条件．有６个独立分量的地震矩张量解可分解成各向同性部分、最佳双力偶和补偿线性矢量偶极．文中给出了发生在中国的５次６级以上地震的地震矩张量反演结果，表明在一些地震的震源过程中存在不可忽略的体积变化．
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| 关 键 词： | 地震矩张量 长周期P波 波形反演 |
| 收稿时间： | 1993-03-09 |
MOMENT TENSOR INVERSION METHOD FOR DETERMINING THE EARTHQUAKE PROCESS BY THE USE OF P-WAVE FORM DATA |
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| YAO ZHEN-XING,ZHENG TINA-YU,WEN LIAN-XING.MOMENT TENSOR INVERSION METHOD FOR DETERMINING THE EARTHQUAKE PROCESS BY THE USE OF P-WAVE FORM DATA[J].Chinese Journal of Geophysics,1994,37(1):34-44. |
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| Authors: | YAO ZHEN-XING ZHENG TINA-YU WEN LIAN-XING |
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| Institution: | Institute of Geophysics, Academia Sinica, Beijing 100101 |
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| Abstract: | A moment tensor inversion method is presented in this paper. Moment tensor is obtained by fitting the long-period P waveforms observed at the stations ranging 3°￣90°without the linear constriant that the trace of the moment tensor is supposed to be equal to zero.Thus,the decomposition of the moment tensor yields an isotropic component, a double couple component and a compensated linear vector dipole（CLVD）.Moment tensor inversion results of five earthquakes（MS>6）of Wuqia, Taiwan, Lanchang, Batang and Jingtai illustrate that the volume variation occurred in some of these earthquake processes can not be ignored. |
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| Keywords: | Seiemic moment tensor Long-period P wave Waveform inversion |
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