| 2009年姚安地震序列定位及震源区三维P波速度结构研究 |
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| 引用本文： | 王长在,吴建平,房立华,王未来.2009年姚安地震序列定位及震源区三维P波速度结构研究[J].地震学报,2011,33(2):123-133. |
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| 作者姓名： | 王长在 吴建平 房立华 王未来 |
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| 作者单位： | （中国北京 100081 中国地震局地球物理研究所） |
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| 基金项目： | 地震行业科研专项(200808001); 基本科研业务专项(DQJB09B08)共同资助 |
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| 摘 要： | 利用2009年7月9日姚安Ms6.0地震序列的到时数据,应用双差层析成像方法,对地震进行了重定位,并反演了震源区的三维速度结构.经过资料选取,共有873次余震事件参加了反演.重定位结果显示,姚安地震余震序列呈WNW向条带状分布,大部分地震的震源深度集中在3-12 km之间.从余震的深度分布随时间的变化推测,姚安Ms6....
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| 关 键 词： | 姚安余震 双差层析成像 地震定位 地壳结构 |
Relocation of aftershocks of the 2009 Yaoan Ms 6.0 earthquake and 3-D P-wave velocity structure around its source region |
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| Wang Changzai,Wu Jianping,Fang Lihua,Wang Weilai.Relocation of aftershocks of the 2009 Yaoan Ms 6.0 earthquake and 3-D P-wave velocity structure around its source region[J].Acta Seismologica Sinica,2011,33(2):123-133. |
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| Authors: | Wang Changzai Wu Jianping Fang Lihua Wang Weilai |
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| Institution: | (Institute of Geophysics, China Earthquake Administration, Beijing 100081, China) |
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| Abstract: | The Yaoan,Yunnan,MS6.0 earthquake occurred on July 9,2009.By inverting seismic phase arrival time data and using the double-difference tomography approach(Zhang and Thurber),the aftershocks were relocated and a 3-D P-wave velocity structure around the earthquake source region were obtained.After data selection 873 aftershocks were used for inversion.The relocation result shows that aftershocks distribute in a belt with WNW--ESE trend.Focal depth of most aftershocks is between 3 km and 12 km.By analyzing the... |
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| Keywords: | Yaoan earthquake double-difference tomography earthquake location velocity structure |
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