【摘要】 简要介绍了昌平地震台概况,用相关分析、信息合成等方法,对体应变仪1989年7月至2001年的资料进行了处理,发现对发生在距昌平地震台300～500km范围内、震级5级以上的地震,体应变资料趋势异常明显,异常时间与震级相关性较好,地震多发生在信息合成值变化较大的时段。昌平地震台体积式应变仪观测到的同震效应多以张性阶跃为主。更多还原

【Abstract】 We have analyzed the volume strain data from July 1989 to December 2001 for Changping Seismic Station by use of correlation analysis,information composition and so on.We found that the data trends had obvious abnormity and correlation between abnormal time and earthquake magnitude for the earthquake M>5 and the range from 300 km to 500 km.At the same time,the earthquake often occurred in the periods while information composition was biggish changed.More over,the volume strain step of co-seismic variation was mainly tensional in Changping Seismic Station.更多还原