摘要
通过对江苏地区7个地磁台多年地磁Z21资料相关分析,检出地磁Z21相关系数异常与该区东部南黄海两次MS≥5.0地震有较好的对应关系。地震前地磁相关系数异常,对今后监视中强地震的短临前兆具有重要意义
By using the method of correlation analysis to Z 21 recorded in seven geomagnetic stations in Jiangsu Province for many years,we found that the abnormal correlation coefficient had good relationship with the two south Yellow Sea earthquakes of M S≥5 0.The result that the geomagnetic correlation coefficient is abnormal before an earthquake is significant for monitoring short term precursors of moderate earthquakes.