| 汶川Ms8.0地震及余震序列重新定位 |
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| 引用本文： | 赵博,石玉涛,高原.汶川Ms8.0地震及余震序列重新定位[J].地震,2011,31(2):1-10. |
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| 作者姓名： | 赵博 石玉涛 高原 |
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| 作者单位： | 中国地震局地震预测研究所; |
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| 基金项目： | 中国地震局地震预测研究所基本科研专项(2008-09); 地震行业科研专项重大项目(201008001)资助 |
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| 摘 要： | 从2008年5月12日汶川8.0级地震发震时刻起到2008年12月31日,四川省及其周边省区布设的区域台网、水库台网以及流动台共记录到10000余次余震序列(M≥2.0).我们采用双差定位法对主震及余震序列进行重新定位,得到7000多个地震的重新定位结果.结果表明,余震分布带长约350 km.在西南部,余震沿龙门山后山...
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| 关 键 词： | 双差定位法 汶川地震 余震序列 龙门山断裂带 |
Relocation of the Wenchuan M_S8.0 Earthquake Sequence |
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| ZHAO Bo,SHI Yu-tao,GAO Yuan.Relocation of the Wenchuan M_S8.0 Earthquake Sequence[J].Earthquake,2011,31(2):1-10. |
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| Authors: | ZHAO Bo SHI Yu-tao GAO Yuan |
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| Institution: | ZHAO Bo,SHI Yu-tao,GAO Yuan(Institute of Earthquake Science,CEA,Beijing 100036,China) |
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| Abstract: | From the origin time of May 12,2008,MS8.0 Wenchuan earthquake to Dec.31,2008,more than 10 000 aftershocks(M≥2.0) had been recorded by the seismic network in Sichuan and the surrounding provinces.In the paper,the main shock and more than 7 000 aftershocks were relocated using the double difference algorithm.The results show that the length of aftershock distribution is about 350 km.In the southwest,the distribution of aftershocks is along the Back-range,the Central and the Front-range of the Longmenshan fault.In the middle,the distribution of aftershocks is along the Central fault.In the North,the aftershocks distributed across the Qingchuanr-Pingwu fault.The depths of aftershocks mainly located in the 10~20 km,and the average depth of aftershocks is 13 km after relocation. |
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| Keywords: | Earthquake location Double difference algorithm Wenchuan MS8 0 earthquake |
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