【摘要】 本次研究发现 ,晋冀蒙交界中强地震前的地电阻率异常存在如下几种特征 :1地震前震中区地电阻率异常出现时间短 ,幅度小 ;2主震之后的中强余震异常明显 ,幅度比较大 ,在低值持续或者年变消失 ;3外围地区异常出现较早 ,异常形态明显 ,并伴随长趋势变化的转折。本文在综合分析该区域异常特征的基础上 ,利用引进九五攻关软件中的月速率方法对这类异常进行了有效的分析 ,形成了一套适用于晋冀蒙地区的地电分析预报方法。更多还原

【Abstract】 The anomalies of earth resistivity in the joint area of Shanxi,Hebei and Inner Mongolia region before some medium and strong earthquakes have the following characteristics:(1) the occurrence time of resistivity anomaly is short and its amplitude is small in the epicenter region before a earthquake;(2) the anomalies before some medium and strong aftershocks after the main shock are clear,with large amplitude and lasting at low value or yearly annual variation disappearing,(3) Anomalies occurred early in marginal area with obviously anomaly form and long tendency turning.Based upon comprehensive analysis to the anomaly features in this area,and using the method of monthly speed introduced from the softweare in the ninth five years breakthrough project,we analyzed this kind anomalies effectively,and present a set sethod for analysis and prediction suitable to the area.更多还原