“十五”地电场观测的震兆异常特征分析  

EARTHQUAKE PRECURSOR ABNORMAL CHARACTERISTICS OF THE GEOELECTRIC FIELD DURING THE TENTH-FIVE YEAR

作　　者：关晓明[1] 李哲[1] 纪延辉[1] 李京锦 吕强[1] 王亮[1] 杨森[1] 

机构地区：[1]锦州地震台,辽宁锦州121013

出　　处：《防灾减灾学报》2012年第4期31-39,共9页Journal of Disaster Prevention And Reduction

摘　　要：利用锦州义县地震站"十五"观测以来的地电场分钟值观测资料,对辽宁及周边地区ML4.0级以上地震大地电场的震兆异常特征进行了分析,并对异常机理进行了讨论。研究结果表明:震兆异常特征表现为震前地电场日变形态的畸变、高频脉冲和阶变变化等。Based on the minute value observation of the geoelectric field since ＂the tenth five-year plan＂ of Yixian Seismic Station in Jinzhou, the abnormal characteristics of telluric field of ML〉4.0 earthquakes in Liaoning and surrounding areas were analyzed. And the anomaly mechanism was discussed. The results showed that earthquake precursor abnormalities were characterized by the geoelectric field distortion of the daily variation shape before the earthquake, high frequency pulse and order variable changes.

关 键 词：地电场 异常特征 机理 

分 类 号：P315.63[天文地球—地震学]