地震地磁观测与研究2017，Vol.38Issue(5)：8-13,6.DOI:10.3969/j.issn.1003-3246.2017.05.002
2016年运城4.4级地震序列精定位及发震构造分析
Fine location and seismogenic structure analysis of Yuncheng M 4.4 earthquake sequence in 2016
摘要
Abstract
In the paper, the aftershock relocation, mainshock focal mechanism solution and seismogenic structure of the Yuncheng M 4.4 earthquake sequence in 2016 are presented. The earthquake distribution results show that the Yuncheng M 4.4 earthquake sequence occurred near the Yanhu lake' northern shore fault which was located in simple structure and different from the seismogenic structure of previous swarm types. The aftershock relocation results show that most the preponderate distribution orientation of aftershocks is in NNE and scattered aftershocks distribute in NW. The focal depths after relocation concentrate on 15—24 km and the average depth is 20.2 km. The depths of fault section focus on 18—23 km and NW dip in accordance with the basin terrain structure. The focal mechanism solutions from Snoke and CAP methods are almost consistent, as slipping faulting with thrust strike. Nodal plane B result is close to the strike and dip of eastern Zhongtiaoshan fault. In summary, the aftershock distribution of Yuncheng earthquake sequence is mostly in NNE; Relocation and focal mechanism results refer that the sequence probably occur on the NNE buried fault of Zhongtiaoshan fault.关键词
运城4.4级地震/精确定位/震源机制解/隐伏断裂Key words
Yuncheng M 4.4 earthquake/relocation/focal mechanism solution/buried fault引用本文复制引用
吴昊昱,吕睿..2016年运城4.4级地震序列精定位及发震构造分析[J].地震地磁观测与研究,2017,38(5):8-13,6.基金项目
中国地震局监测、预测、科研三结合课题(项目编号:160405) （项目编号:160405）
