【摘要】 给出了提取短期地震前兆信息的综合信息增益方法Qt=∑∑KijWijt。利用地磁资料进行的震例研究表明 :对ML≥ 4 6地震 ,在测项具有监测能力的情况下 ,震前3个月内大多有明显的前兆异常显示 ,异常结束 2个月至数天内发震更多还原

【Abstract】 A new method:“the integrated information gain” that extracting the short-term earthquake precursors has been provided in this paper.The earthquake examples using the method to geomagnetic data processing showed that under the monitoring range the earthquake precursory anomalies are obvious that appeared before the most earthquake( M ≥4 6)occurence within three months.When the precursory anomalies were over,after several days to two months later,earthquakes would occurred.更多还原