摘要
分析了山西地震带近年来发生的３次５级以上地震前前兆异常的频度、密度、持续时间、异常形态以及空间分布特征。在此基础上，对山西地区中强地震前的综合预报指标进行了研究。结果表明，前兆现象在震前具有减熵、有序、高频率、高μ值。
The frequencies,densities,continuous times,anomalous shapes and spatial distribution characters of the precursory anomalies before the 3 earthquakes with M ≥5 0 occurred in past years in Shanxi seismic belt were analyzed.Based on this,the comprehensive prediction indexes before the moderately strong earthquakes in Shanxi area were analyzed.The conclusion showed that the precursor phenomena show characters of entropy decreasing,order,high frequency,high μ value,low probability and over limit of comprehensive integration.
出处
《山西地震》
1997年第1期36-45,共10页
Earthquake Research in Shanxi
关键词
地震前兆
异常特征
预报指标
地震预报
Shanxi Earthquake precursor Anomalous character Prediction index
