利用近震转换波探测地壳深部构造的研究

本文对近震PS折射转换波的运动学和动力学特征进行了初步的研究,并且提出了识别近震PS转换波的主要参考标志。利用这些标志分析了邢台地区某些测点的近震转换波资料,所测出的转换界面深度与爆炸地震法得出的主要结果基本一致。因此,近震PS转换波法是探测区域地壳深部构造的一种有效方法。 

STUDIES ON THE EXPLORATION OF DEEP CRUSTAL STRUCTURE USING CONVERTED SEISMIC WAVES OF NEAR EARTHQUAKES

In this paper,preliminary studies are decribed on the kinetic and dynamic characters of PS converted seismic waves of local and near earthquakes,and the main criteria for identifying PS converted seismic waves of near earthquakes are also suggested. The data of PS converted seismic waves at some observation points in the Xingtai area are analysed based on these criteria. The main deep discontinuities thus derived are essentially consistent with those determined by deep seismic sounding surveys.It is concluded that the PS converted seismic wave method is an effective method for the exploration of regional structures of the crust.