【摘要】 利用常规分析方法年变曲线、矢量图曲线分析研究了山西地区MS≥4.0和国内外MS≥7.0地震前地倾斜、地应变资料所出现的短期和临震异常变化,统计了异常开始至发震时间、异常持续时间、异常结束至发震时间及异常形态等,通过对山西地倾斜、地应变资料的日均值做一阶差分分析,并对典型震例进行剖析得出了山西地区(近场)4.0级以上地震和远场7.0级强地震前地倾斜、地应变的短期、临震异常特征。更多还原

【Abstract】 Short-term and imminent earthquake anomaly variation appeared in crustal tilt and ground strain data before the MS≥4.0 earthquakes in Shanxi and the MS≥7.0 earthquakes at home and aboard are studied by using the routine analysis methods of yearly variation and vector graph.Time from anomaly starting to earthquake occurring,anomaly lasting time,time from anomaly ending to earthquake occurring and anomaly shape etc.are calculated.Through the first order differential analysis on the daily mean values of crustal tilt and ground strain data of Shanxi.Based on anatomy of typical earthquake events,short-term and imminent earthquake anomaly characteristics of crustal tilt and ground strain before the MS≥4.0 earthquakes in Shanxi(near field) and the MS≥7.0 earthquakes in far field are figured out.更多还原