安徽中西部地区地震活动特征的对比分析

Compared analysis of seismic activity characteristics in Anhui Midwest Area

针对安徽中西部地区目前存在的多项测震学指标异常，重点对比分析了该区域１９７０年以来三个活动时期的地震活动时空特征。认为本活跃期期间（１９９０年以来）地震活动特征总体上与第四个活动期期间（１９７０年～１９７９年）比较类似，但活动水平要低，时间上还将持续１年至１年半左右。

Owing to a lot of seismometry index abnormalitis of Anhui Midwest area,we have focused on compared analysis of the spase time characteristics of seismic activity in this area since 1970.The characteristics of this active period(since,1990)is similar to that of the 4th active period(from 1970 to 1979),though it's level is lower.The active time will be continued 1 year or 1 5 years or so.