| 震源参数因素对玉树地震库仑破裂应力图像及其与余震活动统计关系的影响 |
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| 引用本文： | 王莹,吴小平,赵韬.震源参数因素对玉树地震库仑破裂应力图像及其与余震活动统计关系的影响[J].地震学报,2011,33(5):595-604. |
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| 作者姓名： | 王莹 吴小平 赵韬 |
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| 作者单位： | 1） 中国昆明650091云南大学地球物理系2） 中国西安710068陕西省地震局 |
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| 基金项目： | 国家自然科学基金项目(41074044,40764001)资助 |
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| 摘 要： | 2010年4月14日青海省玉树发生MS7.1强震， 根据国内外3个机构公布的5套玉树地震震源参数，计算了玉树地震产生的库仑破裂应力变化，研究了震源参数的差异对库仑破裂应力变化及其与余震活动关系的影响． 结果表明，由于不同来源震源参数存在差异，计算得到的库仑破裂应力变化图像也存在不同程度差异，从而影响库仑破裂应力变化与余震活动的关系．在震源断层参数中，断层滑动角和位错量的影响大于其它参数．此外还发现对余震统计时间的长短也会影响库仑破裂应力变化与余震活动关系的统计结果．
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| 关 键 词： | 青海玉树MS7.1地震 震源参数影响 库仑破裂应力变化 余震活动 |
Influence of source parameters of the 2011 Yushu earthquake on its Coulomb failure stress calculation and on aftershock activity |
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| Wang Ying,Wu Xiaoping,Zhao Tao.Influence of source parameters of the 2011 Yushu earthquake on its Coulomb failure stress calculation and on aftershock activity[J].Acta Seismologica Sinica,2011,33(5):595-604. |
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| Authors: | Wang Ying Wu Xiaoping Zhao Tao |
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| Affiliation: | 1) Geophysics Department of Yunnan University, Kunming 650091, China2) Earthquake Administration of Shaanxi Province, Xirsquo;an 710068, China |
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| Abstract: | On April 14, 2010, the Yushu MS7.1 earthquake occurred in Qinghai Province, China. Based on five sets of source parameters published by three institutions at home and abroad, we calculated Coulomb failure stress (CFS) change induced by Yushu earthquake occurrence, and studied the influence of different source parameters on the calculated CFS change and its statistic relation with aftershocks. The result shows that the calculated CFS change patterns are different due to different source parameters, thus the ... |
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| Keywords: | Yushu MS7 1 earthquake influence of source parameters Coulomb failure stress change aftershocks |
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