| 2013年10月吉林省前郭强震群研究 |
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| 引用本文： | 武成智,;张晨侠,;刘俊清,;张淑洁.2013年10月吉林省前郭强震群研究[J].国际地震动态,2014(8):17-21. |
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| 作者姓名： | 武成智 ;张晨侠 ;刘俊清 ;张淑洁 |
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| 作者单位： | [1]长白山火山监测站,安图133600; [2]吉林省地震局,长春130117; [3]前郭县地震局,前郭131100 |
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| 基金项目： | 地震科技星火计划项目（XH14016Y）,中国地震局“三结合”课题（课题编号：140702）联合资助. |
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| 摘 要： | 从2013年10月31日开始，不到一个月的时间吉林省前郭县就发生了5次5级以上地震，最大地震为11月23日的Ms5．8地震。根据震源机制解、余震序列特征、震中区地质构造特点以及历史地震情况，对这次强震群的发震条件进行探讨。认为震源区位于松辽盆地中部滑脱面上部的推覆构造系内，我国东北块体应力应变状态受2011年日本9级巨震影响，应力使滑脱面上部的隐伏铲形断层面组发生错动，从而发生这次隅露群．
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| 关 键 词： | 前郭强震群 松辽盆地 推覆构造 |
The research on the Qianguo Ms5.5 earthquake swarm in 2013 in the Jilin Province |
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| Institution: | Wu Chengzhi, Zhang Chengxia, Liu Junqing, Zhang Shujie( 1) Changhaishan Volcano Observatory, Antu 133600, China ;2) Earthquake Administration of Jilin Province , Changchun 130117, China ;3) Earthquake Administration of Qianguo County, Qianguo 131100, China) |
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| Abstract: | From October 31, 2013, 5 earthquakes with magnitude greater than M5 occurred in Qianguo County, Jilin Province within 1 month. We discuss the causative condition of the strong earthquake swarm according to the characteristics of focal mechanism solution, aftershock sequence, the geological structure characteristics and historical earthquake in epicentral region. We conclude that the epicentral area is located in the nappe structure in Songliao basin. The stress and strain condition of NE China block is affected by 2011 M9 large earthquakes in Japan, the change of the stress make the blinded listric fault plane group to detach, and resulted in the strong earthquake swarm. |
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| Keywords: | Qianguo strong earthquake swarm Songliao basin nappe structure |
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