首都圈跨断层流动形变观测资料映震能力及场地监测能力分析  

Analysis on Earthquake Reflecting Ability of Cross-fault Observation Data and Monitoring Capability of Sites in the Capital Area of China

作　　者：陆明勇[1] 黄宝森[1] 刘天海[1] 邵永新[2] 寇建新[1] 房宗绯[1] 张金城[1] 于海生[1] 

机构地区：[1]中国地震应急搜救中心,北京100049 [2]天津市地震局,天津300201

出　　处：《地震》2011年第3期121-134,共14页Earthquake

基　　金：中国地震局监测预报司项目资助

摘　　要：首都圈最早建立跨断层流动形变监测网始于20世纪60年代末,主要布设在北京周围广大地区,覆盖了主要活动断裂带。在过去的40多年里,首都圈地区及附近发生了多次强震,如1976年唐山7.8级、1989年大同6.1级和1998年张北6.2级地震等。本文首先对首都圈地区的跨断层流动形变观测资料进行了映震能力分析,然后探讨了监测场地的监测能力。结果表明,首都圈地区跨断层流动形变69.64%的观测资料和75.00%监测场地对已发生的较强地震具有较好的映震能力及监测能力,能够较好地捕捉到强震孕育、发展、发生等前兆异常信息。The first movement to establish cross-fault deformation monitoring network began in the Capital Area of China in the late 1960s,mainly laid in a large area around Beijing,covering the main faulting zones.In the past 40 years,several strong earthquakes occurred in the metropolitan area,such as Tangshan M7.8 earthquake in 1976,Datong M6.1 earthquake in 1989,and Zhangbei M6.2 earthquake in 1998.First,we analysed the earthquake reflecting ability of cross-fault deformation observational data in the Capital Area of China,and discussed the earthquake monitoring capability of sites.The results show that： 69.64% cross-fault deformation observation data have better earthquake-reflecting ability on the strong earthquakes occurred,75.00% monitoring sites have better earthquake monitoring capability on the strong earthquakes occurred,and can better capture the strong earthquake preparation,development,occurrence of precursory anomalies.

关 键 词：跨断层流动形变观测 映震能力 监测能力 首都圈地区 

分 类 号：P315.7[天文地球—地震学]