地磁“低点位移”预报方法与天祝6.2级等地震前的区域异常

A PREDICTION METHOD OF GEOMAGNETIC LOW-POINT DISPLACEMENT AND REGIONAL ANOMALY BEFORE THE TIANZHU M=6.2 EARTHQUAKE ETC

摘要:

本文对地磁垂直分量日变"低点位移"预报方法及"低点位移"异常与强震的对应情况进行了系统的总结,並着重介绍了1990年天祝6.2级等地震前的地磁"低点位移"异常与短期趋势判断情况。事实表明,该预报方法不仅能对6级以上强震作出短临预报,还可对重点监视区内的一些中强地震作出较好的短临预报。

Abstract:

This paper systematically summarized a prediction method of daily low-point displacement of geomagnetic vertical component,and the relation between the low-point displacement anomaly and the strong earthquakes.It introduced emphatically the geomagnetic low-point displacement anomalies and the short-term trend judgement before the TianZhu M=6.2 earthquake of 1990.The results show that this prediction method can make short-imminent prediction not only for M ≥ 6 strong earthquakes,but for some moderately strong earthquakes in master monitoring areas.