2014年9月6日河北涿鹿4.3级地震分析  

Analysis of Hebei Zhuolu M4.3 Earthquake on Sep.6,2014

作　　者：张杰卿[1] 刘双庆[1] 孙路强[1] 李赫[1] 

机构地区：[1]天津市地震局,天津300201

出　　处：《华北地震科学》2015年第2期36-40,47,共6页North China Earthquake Sciences

基　　金：天津市地震局局内科研项目(12102)

摘　　要：2014年9月6日河北涿鹿发生4.3级地震,该地震发生在延怀盆地的延矾断裂带上,打破了延怀盆地及其周边（39.8°~41.0°N,114.1°~116.1°E）自2005年8月31日河北蔚县3.4级地震后长达9年的ML≥4.0地震平静,是一个非常值得关注的显著地震事件。从该地震的地质背景、地震序列、震源机制及视应力、地震活动性等方面进行分析,结果表明：地震的主破裂面走向与延矾断裂带走向一致,错动方式以走滑为主,地震序列是主震—余震型。根据以前震例的总结分析认为,此次地震的发生对后续华北地区中强地震具有一定的指示意义。On September 6,2014,aM4.3earthquake occurred in Hebei Zhuolu.This earthquake break the ML≥4.0seismic quiescence in the Yanhuai basin and its surrounding area（39.8°~41.0°N,114.1°~116.1°E）since the Yuxian M3.4earthquake occurred on Aug.31,2005.The epicenter of earthquake is on the Yanfan fault zone in the Yanhuai basin.The earthquake is analyzed from the following aspects：geological background,earthquake sequence,focal mechanism and seismic activity.The result shows that,the main rupture surface of the earthquake is consistent with the Yanfan active fault and is mainly caused by striking fault.The earthquake sequence is belongs to main shock-aftershock type.According to previous earthquakes in this area,the earthquake may have significance for medium and strong earthquake forecasting in North China in the future.

关 键 词：涿鹿地震 延怀盆地 显著地震 震例回溯 

分 类 号：P315.71[天文地球—地震学]