摘要
本文利用P波初动符号,垂直向P波、S波最大振幅比,尾波衰减系数a值,尾波持续时间比τ_b/τ_v及尾波衰减速率p值等方法研究了1990年10月25日乌苏5.2级地震波异常曲时空变化特征。结果表明,地震波参数的分析可以提取中强地震前的异常信息。
In this paper, the temporal—spatial change characteristics of seismic wave anomaly of Wusu 5. 2 earthquake on Oct. 25, 1990 have been researched using P wave first motion mark、maximum amplitude ratio of vertical P wave and S wave、a value of decay coefficient of coda、duration time ratio of coda (τ_h/τ_v)、p value of decay rate of coda and so on method. The results show that abnormal information was picked out before moderate shock through analysing parameters of seismic wave.
出处
《高原地震》
1993年第1期9-16,共8页
Plateau Earthquake Research
关键词
地震波参数
尾波形状函数
地震预报
乌苏地震
Parameters of seismic wave Coda shape function Earthquake prediction Wusu earthquake
