强震前地磁秒数据异常及其短临预测意义  

Pre-Seismic Geomagnetic Anomaly Using Second Data and Its Significance in Earthquake Short-Term Prediction

作　　者：孙旭龙[1] 

机构地区：[1]中国地震局地球物理研究所,北京100081

出　　处：《地球科学（中国地质大学学报）》2014年第12期1873-1879,共7页Earth Science-Journal of China University of Geosciences

摘　　要：通过分析6个强震震中附近地磁Z分量秒数据的处理结果显示:一些强震在震前反复出现较强的地磁异常现象.此现象在震前百余天至四十余天和临震前出现;地磁场的特大异常持续天数随震级的增大而增大,其异常天数与总体天数的比值随着震级的增大而增大.该特性对于短临地震预报预警及防震减灾具有一定意义.According to the result of geomagnetic data,great abnormal magnetic phenomenon occurring repeatedly before some significant earthquakes were found.This kind of phenomenon occurs about from over forty to a hundred days before.This pre-seismic geomagnetic anomaly lasts long as the magnitude increases.The nature of geomagnetic data before earthquakes has something to do with earthquake prediction and may be applied to precaution against earthquake disasters.

关 键 词：强震 震前磁异常 短临地震预测 天然地震 

分 类 号：P315.8[天文地球—地震学]