代县地震台体应变异常与山西地震带有感地震对应关系

The correlation between body strain observation anomalies at Daixian Seismic Station and felt earthquake in Shanxi seismic belt

通过年动态曲线对比、与水位相关分析、去趋势分析等方法,分析代县地震台体应变数字化以来的观测资料,结果显示,代县体应变异常与山西地震带3次4级以上地震存在一定对应关系,异常特征包括:曲线快速上升(受压)、与水位相关性变差、与水位曲线相比形态一致性不好、去趋势处理后体应变年动态异常。

Based on methods of the annual dynamic curve comparison,correlation analysis,detrendanalysis and etc.,the digital observation of body strain at Daixian Seismic Station is studied.Theresult shows that,it has some correlation between body strain observation anomalies at DaixianSeismic Station and several earthquakes in Shanxi.The features of the anomalies includes:rapid rising of the curves(is compressed),correlation of body strain and water level and themorphological consistency with the water level curve becoming worse,and annual dynamicanomaly of body strain observation after detrending process.