| 云南地区中强地震震源破裂图像 |
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| 引用本文： | 苏有锦,李忠华,蔡民军,张俊伟,刘祖荫.云南地区中强地震震源破裂图像[J].地震研究,2000,23(4):369-377. |
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| 作者姓名： | 苏有锦 李忠华 蔡民军 张俊伟 刘祖荫 |
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| 作者单位： | 云南省地震局,昆明,650041 |
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| 基金项目： | 云南省自然科学基金!(97D0 15G)，云南省中青年学术和技术带头人培养引进办公室资助项目 |
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| 摘 要： | 利用等震线和余震序列资料，主要研究了云南地区１５１次中、强震的震源破裂方向资料，给出云南地区中强地震震源破裂的空间展布图像。结果表明，该区的５～６级地震破裂相对较散乱，没有明显的优势方向。而７级以上地震破裂具有明显的方向性，以北北西－北西向为主，占６３％；其次是近南北向，占２１％它们形成了３条具相当规模的震源破裂带。
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| 关 键 词： | 中强地震 震源破裂 破裂方向 空间分布 云南地区 |
RUPTURE PATTERN OF SEISMIC SOURCE FOR MODERATE-STRONG EARTHQUAKES IN YUNNAN REGION |
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| Su Youjin,Li Zhonghua,Cai Mingjun,Zhang Jianwei,Liu Zuyin.RUPTURE PATTERN OF SEISMIC SOURCE FOR MODERATE-STRONG EARTHQUAKES IN YUNNAN REGION[J].Journal of Seismological Research,2000,23(4):369-377. |
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| Authors: | Su Youjin Li Zhonghua Cai Mingjun Zhang Jianwei Liu Zuyin |
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| Abstract: | The directions of seismic source rupture for 151 historical moderate strong earthquakes occurred in Yunnan region have been determined by using aftershock sequence data and isoseismal line data. The spatial distributions of seismic source rupture for these earthquakes have also been plotted. The results show that seismic ruptures with Ms 5-6 have no dominated direction, however, the ones with Ms7 0 have obvious directivity. The dominated direction is NNW-NW, taking 63%, and another is close to NS, taking 21%. They form 3 large seismic rupture belts, which are aligned with the boundary of active interplate block in this region. |
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| Keywords: | Yunnan region moderate strong earthquake rupture direction of seismic source |
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