摘要
使用河北省测震台网7个宽频带地震台记录,采用CAP方法反演2006年7月4日文安M_W 5.1地震震源机制解,并结合区域地质背景讨论发震构造。结果显示,文安5.1级地震的最佳双力偶解为:节面Ⅰ走向215°,倾角87°,滑动角-115°;节面Ⅱ走向118°,倾角25°,滑动角-8°,震源深度为15 km,联合地质构造确定地震断层面为隐伏的NE向断裂带,为正断层兼走滑断层,与其他研究结果基本一致。
Based on the records of7stations in Hebei seismic network,we inverted the focal mechanism of Wen’an MW5.1earthquake on July42006with the“Cut and Paste”(CAP)method,and analyzed the seismogenic structure combining with the geological background.Our result shows that the best double couple solution of the MW5.1earthquake is215°,87°and-115°for strike,dip and rake angles,respectively.Another nodal plane solution is118°,25°and-8°.The geologic structure shows that the seismic fault in the north east concealed fault,properties with fault and strike-slip faults.This result is consistent with other research findings.
作者
张小涛
韩丽萍
赵长红
张双凤
吴鹏
Zhang Xiaotao;Han Liping;Zhao Changhong;Zhang Shuangfeng;Wu Peng(Handan Central Seismic Station, Hebei Province 056000, China;University of Science and Technology of China, Anhui Province 230026, China)
出处
《地震地磁观测与研究》
2017年第2期17-21,共5页
Seismological and Geomagnetic Observation and Research
基金
河北省地震局地震科技星火计划项目(项目编号:DZ2014122507)
关键词
文安地震
震源机制解
CAP方法
断层
构造
Wen’an earthquake
focal mechanism
CAP method
fault
construction
