泰安基准地震台体应变映震能力统计分析  

Statistical Analysis of Earthquake Reflecting Ability of Body Strain at Tai'an Referential Seismological Station

作　　者：于庆民[1] 卢双苓[1] 郝军丽[2] 李惠玲[1] 闫德桥[3] 孙豪 

机构地区：[1]山东省地震局泰安基准地震台,山东泰安271000 [2]山东省地震局,山东济南250014 [3]山东省地震局安丘地震台,山东安丘262100 [4]山东烟台市地震局,山东烟台264000

出　　处：《山西地震》2014年第2期1-7,16,共8页Earthquake Research in Shanxi

基　　金：中国地震局"三结合"课题(SJH201301);山东省地震局合同制项目(14Y61)资助

摘　　要：通过对山东泰安基准地震台体应变仪记录的同震变化进行统计,绘制出了体应变映震能力图;2009-2012年全球共发生了91次7级及以上地震,仅有1例未记录,7级及以上地震记录能力为98.9%;其中,记录最小地震为3.5级,震中距165km;最远地震7.3级,震中距19 498km。同震变化幅度与震级成正比,与震中距成反比;并对地震前后出现的阶跃和畸变现象进行初步探讨,认为有些畸变可能与地震有关系。By statistics of coseismic variation recorded at Tai＇an Referential Seismological Station,an formula of earthquake reflecting ability of body strain is figured out.Body strain at Tai＇an Station has strong earthquake reflecting ability,only one earthquake with M≥7.0missed.The magnitude of the minimum earthquake recorded is M=3.5with epicentral distance 16.5km,while the farthest earthquake recorded is M=7.3with epicentral distance 19 498km.Amplitude of coseismic variation is proportional with magnitude and is inverse with epicentral distance.Also,step change and distortion,which seem to be related with earthquake,before and after earthquake are studied preliminarily.

关 键 词：体应变 同震变化 映震能力 

分 类 号：P315.725[天文地球—地震学]