| 1996年5月3日包头西Ms=6.4地震的矩张量解 |
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| 引用本文： | 张兵,竺敏.1996年5月3日包头西Ms=6.4地震的矩张量解[J].地震地磁观测与研究,1998,19(2):15-20. |
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| 作者姓名： | 张兵 竺敏 |
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| 作者单位： | 国家地震局地球物理研究所，北京市地震局 |
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| 摘 要： | 利用ＣＤＳＮ及ＧＤＳＮ数字化Ｐ波波形资料，用遗传算法反演１９９６年包头西ＭＳ＝６．４地震的地震矩张量解。结果表明该地震矩张量解以双力偶成分为主，是断层面接近南北走向的左旋走滑错动，断裂面走向与大震后５天内余震的分布带走向基本一致。压应力轴与张应力转接近水平，前者近北西西走向，后者近北北东走向。
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| 关 键 词： | 包头 震源 地震矩张量 |
A study of seismic moment tensor of May 3, 1996 western Baotou earthquake( M S=6 4) |
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| Zhang Bing , Lin Banghui and Zhu Min Institute of Geophysics,State Seismological Bureau,Beijing ,China Seismological Bureau of Beijing,Beijing,China.A study of seismic moment tensor of May 3, 1996 western Baotou earthquake( M S=6 4)[J].Seismological and Geomagnetic Observation and Research,1998,19(2):15-20. |
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| Authors: | Zhang Bing Lin Banghui and Zhu Min Institute of Geophysics State Seismological Bureau Beijing China Seismological Bureau of Beijing Beijing China |
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| Institution: | Zhang Bing 1) , Lin Banghui 1) and Zhu Min 2) 1) Institute of Geophysics,State Seismological Bureau,Beijing 100081,China 2) Seismological Bureau of Beijing,Beijing,100036,China |
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| Abstract: | In this paper, by utilizing CDSN and GDSN P wave digital data, we use the genetical algorithm in the seismic moment tensor inversion of western Baotou earthquake ( M S=6 4) occurred in May 3,1996. The result indicates that the seismic momemt tensor of this earthquake comprises mainly the double couple components, and is a left lateral slip with fault plane trending to southnorth direction, and the direction of fault is generally consistent with the distribution direction of aftershock sequences in the five days after the mainshock. Both the pressure stress axis and the tensive stress axis trend to horizon, the former is near NWW direction, and the later is near NNE direction. |
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| Keywords: | Baotou seismic source seismic moment tensor |
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