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地震 ›› 2009, Vol. 29 ›› Issue (1): 26-32.

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汶川8.0级地震序列活动的分段性研究

李志雄1, 邵志刚1, 赵翠萍1, 李圣强1, 王慧敏2, 吕梅梅2, 和平1, 刘桂平1, 崔子键1   

  1. 1.中国地震局地震预测研究所, 北京 100036;
    2.中国地震台网中心, 北京 100045
  • 收稿日期:2008-10-06 修回日期:2008-11-17 出版日期:2009-01-31 发布日期:2021-10-15
  • 作者简介:李志雄(1963- ), 男, 湖南常德人, 博士, 研究员, 主要从事地震预测方法及理论等研究。
  • 基金资助:
    科技部国际合作项目(2005CB724808)、 地震联合科学基金项目(A07007)和中国地震局地震预测研究所基本业务专项(0207690210)共同资助

Study on the Sectional Features of the Aftershock Sequence of the Wenchuan MS8.0 Earthquake

LI Zhi-xiong1, SHAO Zhi-gang1, ZHAO Cui-ping1, LI Sheng-qiang1, WANG Hui-min1, LU Mei-mei2, HE Ping1, LIU Gui-ping1, CUI Zi-jian1   

  1. 1. Institute of Earthquake Science, CEA, Beijing 10036, China;
    2. China Earthquake Network Center, Beijing, 100045, China
  • Received:2008-10-06 Revised:2008-11-17 Online:2009-01-31 Published:2021-10-15

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摘要： 在汶川8.0级地震序列的跟踪研究中, 发现汶川地震序列具有明显的空间分段活动特点。 根据对汶川地震余震序列的部分测震学指标计算, 结果表明, 汶川地震序列可能是由以绵竹为界, 其西南段的汶川主-余震序列和绵竹北东段的北川－青川6级震群地震序列组成, 汶川地震可能具有龙门山活动构造的继承性运动特点。

关键词: 汶川8.0级地震, 地震序列, 活动分段性, 地震类型

Abstract: In the process of investigating the aftershock sequence of Wenchuan MS8.0 earthquake, we found that there is an obvious sectional feature in the spatial distribution of its aftershocks. According to the calculation results of some seismometry index of the aftershock sequences, the whole aftershock sequence could be divided into two sub-sequences, or the main event-aftershock sequence distributed in the Wenchuan area at the south-west part of the fault and the seismic swarm sequence with several large events of magnitude MS6.0 or greater located between Beichuan County and Qingchuan County with the boundary of Mianzhu County at the north-east part of the fault. The Wenchuan earthquake is likely to possess the characteristic of inheritance movement of active tectonics in the Longmanshan fault system.

Key words: Wenchuan earthquake, Earthquake sequence, Sectional feature of activities, Earthquake type

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