西安地震台体应变观测资料异常与汶川8.0级地震的疑似对应关系  

Suspected Correlation between Anomalies of Body Strain Observation Data at Xi'an Seismological Station and Wenchuan M8.0 Earthquake

作　　者：崔青发[1] 舒优良[1] 王振武[1] 樊金堂[1] 刘伟[1] 

机构地区：[1]陕西省地震局西安基准地震台,陕西西安710068

出　　处：《山西地震》2010年第4期30-33,39,共5页Earthquake Research in Shanxi

基　　金：南北地震带北段大震危险性强化跟踪研究及西安市政府十一五项目"西安地区地震活动特征研究"共同资助

摘　　要：在2008年5月12日汶川8.0级地震前后,西安基准地震台体应变观测资料出现显著的异常变化。对引起此异常可能的原因进行分析,其一,在异常出现时,台站附近在建筑施工;其二,在其他时段也出现过两次与汶川地震前后相似的异常,是由仪器原因引起。但鉴于异常变化与汶川8.0级地震在时间上的一致性,幅度上的显著性和形态上与一般震例的相似性,故认为,西安台体应变观测资料出现此异常可作为汶川8.0级地震前后的疑似地震异常来处理。The body strain observation data at Xi＇an reference seismological station showed obvious changes before and after the May 12^th, 2008 Wenchuan earthquake. The possible reasons for causing these anomalies are analyzed. Firstly, the construction work near the station was continuing while the anomaly appeared. Secondly, the similar anomalies also appeared twice in other periods, which were caused by instruments. Considering the time consistency of anomalous variation with Wenchuan M8. 0 earthquake, the notability of variation amplitude and shape comparability with earthquake cases, the anomalies of body strain observation data at Xi＇an seismological station are believed to be suspected earthquake precursor of Wenchuan earthquake.

关 键 词：体应变观测资料 震兆异常 汶川地震 

分 类 号：P315.724.7[天文地球—地震学]