节点文献
区域地震范围内地壳介质的低频响应
LOW-FREQUENCY RESPONSE OF THE CRUSTAL MEDIA AT REGIONAL RANGES
【Author】 Xu Dafang Yao Zhenxing (Institute of Geophysics,Chinese Academy of Sciences)
【机构】 中国科学院地球物理研究所;
【摘要】 本文对于计算Pnl波格林函数的广义地震射线方法进行了改进.包括:(1)简化了地震射线的描述方法;(2)将射线按其运动学相似性进行分组计算,从而较大地提高了计算速度;(3)进一步推广用于计算SH波部分的响应.对于1983年山东菏泽地震和1985年云南禄劝地震,用综合地震图方法模拟了763型长周期地震仪的Pnl波记录,求出两个地震的断层面解答,其结果与有关研究所得该地区构造应力场的图象基本一致.
【Abstract】 In this paper some modifications to generalized ray theory are made for generating the Pn! Green’s functions.The major improvements are as follows:(1) The method to describe seismic rays are simplified;(2) The rays are grouped on the basis of the kinematical similarity, thus the computation speed is considerably increased;(3) This technique is extended to calculate the response of the SH waves.For the Heze(Shandong,1983) and Luquan(Yunnan, 1985) earthquakes,Pnl waveforms recorded on the 763 long-period seismographs are simulated by the use of synthetic seismograms.The fault plane solutions yielded for these two earthquakes agree with patterns of the tectonic stress field.
- 【会议录名称】 中国科学院地球物理研究所论文摘要集(1988)
- 【会议时间】1989-12-01
- 【分类号】P315.31