摘要
给出了数字化地震记录Ｐ波初始部分平均出射角和方位角的分析处理方法，研究了山西大同ＭＬ＝６．１级地震以及唐山ＭＬ＝５．６级地震前出射角与方位角出现的异常变化，并对地震前地震波动力学特征的这一类前兆异常现象进行了初步讨论。
In this paper,the processing and analyzing method of mean P-wave emergence angle and azimuth angle from the digital seismic records is given,and the anomalous variations of mean P-wave emetgence and azimuth angle before Datong(ML=6.1) and Tangshan(ML=5.6) earthquakes have emphatically been studied.Finally,the seismic wave dynamical characteristics are preliminarily discussed as a kind of precursory phenomena before large earthquake.
出处
《地壳形变与地震》
CSCD
1995年第3期74-77,共4页
Crustal Deformation and Earthquake
关键词
P波
方位变化
地震前兆
出射角
大震
P-wave,azimuth variation,earthquake precursor,emergence angle
