闽赣交界地区流动地磁变化特征与地震关系的分析

摘要

利用1990年以来闽赣交界地区流动地磁观测资料,分析研究1990年以来发生的地震与地磁异常变化的关系.结果表明,闽赣交界地区流动地磁变化与该地区的地震存在一定的对应关系,在震前一年内出现异常,表现出地磁场变化的群体性和同向性的特征,震级越大,震磁异常关系越显著.%In this paper, the relationship between the earthquakes and the geomagnetic anomalous variation was studied by use of the mobile geomagnetic observation data on the Fujian-Jianxi interface since 1990.The results show that there are some correspondence relationship between the mobile geomagnetic variation and the earthquakes in this region. the geomagnetic anomaly occurred within one year before earthquakes,showing the characteristics of same group and same direction in the geomagnetic field variation. The greater the earthquake magnitude, the more remarkable the seismo-magnetic relation.