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2004年6月甘肃临泽震群地震精确定位
引用本文:莘海亮,张元生,郭晓,李稳. 2004年6月甘肃临泽震群地震精确定位[J]. 地震工程学报, 2008, 30(1): 71-74
作者姓名:莘海亮  张元生  郭晓  李稳
作者单位:1. 中国地震局,兰州地震研究所,甘肃兰州,730000
2. 中国地震局,兰州地震研究所,甘肃兰州,730000;中国地震局地震预测研究所兰州科技创新基地,甘肃兰州,730000
基金项目:地震科学联合基金 , 中国地震局兰州地震研究所科研基金
摘    要:利用"双差地震定位法"对2004年6月甘肃临泽发生的地震震群进行了精确定位,结合地质构造资料讨论了本次震群的发震构造.结果表明:该震群震中沿着榆木山北缘断裂呈NNW向分布,震源深度优势分布于10~25 km,平均深度为16.3 km;发震断裂为榆木山北缘断裂东段局部断裂,走向NNW,倾向SW,倾角约为60°.

关 键 词:临泽震群  地震精确定位  双差地震定位法  甘肃  临泽  震群  地震精确定位  Earthquake Swarm  Locating  倾角  倾向  局部  发震断裂  震源深度  优势分布  榆木山  结果  发震构造  构造资料  地质  结合  发生  双差地震定位法
文章编号:1000-0844(2008)01-0071-04
修稿时间:2007-07-13

Accurate Locating of Linze Earthquake Swarm Occurred in June,2004
XIN?Hai-liang,ZHANG?Yuan-sheng,GUO?Xiao and LI?Wen. Accurate Locating of Linze Earthquake Swarm Occurred in June,2004[J]. China Earthguake Engineering Journal, 2008, 30(1): 71-74
Authors:XIN?Hai-liang  ZHANG?Yuan-sheng  GUO?Xiao  LI?Wen
Affiliation:Lanzhou?Institute?of?Seismology?,?CEA;;Lanzhou?Institute?of?Seismology?,?CEA;Lanzhou?Base?of?Institute?of?Earthquake?Prediction,?CEA;;Lanzhou?Institute?of?Seismology?,?CEA;Lanzhou?Base?of?Institute?of?Earthquake?Prediction,?CEA;;Lanzhou?Institute?of?Seismology?,?CEA;
Abstract:The Linze earthquake swarm in Gansu province in Jun. 2004 are relocated using the double-difference earthquake location genetic algorithm, the seismogenic structure is discussed with the data of geological structure. The results show that the distribution of hypocenters stretchs along the north edge of Yumushan fault in NNW direction, the focus depths of the earthquake swarm are mainly distributed in 10-25 km, and the average is 16.3 km. The seismogenic structure is the east section of the fault, whose strike is NNW, the dip direction is SW, and the dip is about 60°.
Keywords:Linze earthquake swarm   Accurate seismic location   Double-difference earthquake location algorithm   
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