Study on the earthquake fault of the Lulong M-L=6.2 earthquake by precise relocation of aftershock

被引：0
作者：
Li Wen-jun [1 ,2 ]
Wang Pei-de [1 ]
Li Chun-lai [1 ]
Chen Qi-fu [2 ]
机构：
[1] China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China
[2] China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China
来源：
EARTHQUAKE SCIENCE | 2005年 / 18卷 / 04期
基金：
中国国家自然科学基金;
关键词：
M-L=6.2 earthquake; Zhangjiakou-Bohai seismic belt; Hypoinverse location method; seismogenic structure;
D O I：
暂无
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
We have selected 171 near-field records from 391 aftershock records of the Lulong, Hebei Province, earthquake in October 1982 and relocated the hypocenter of 45 aftershocks using the program Hypoinverse. The distribution of aftershocks reveals a set of earthquake faults: a WNW stretching fault truncates two NNE stretching faults. The two branches of faults show the conjugate structure which is often seen in brittle fracture. The NNE stretching faults are connected together. The Luanhe river valley near Lulong developed to a rudiment rift basin surrounded by a series of faults. The fault of Lulong earthquake is a strike-slip fault with tension component. This fault type matches with the activity of Zhangjiakou-Bohai seismic belt (Zhang-Bo belt) and also shows the action of Zhang-Bo belt as a boundary of two secondary active blocks that truncates the NNE fault.
引用
收藏
页码：402 / 409
页数：8
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