摘要
本文提出了描述爆破地震波的空间相关性的相干函数的理论模型。该模型由三部分组成，分别代表影响地震波的空间相关性的三个主要因素，即：不相干性、传递波、场地效应。文中还指出相干函数的非相干部分是一个非负实函数且为频率和测点距离的减函数。传递波和场地效应部分是各部分波的相位的单位模数的复函数。
A theroetical model for the coherency function describing spatial variability of erathquake wave is developedin this paper. The model consists of three components characterzing three distince effects of spatial variability, named the incoherence effect, the wavepassage effect, and the site - response effect,It is also shown that the incoherence component ofthe coherency function is a real- valued. non - negative, decaying function of frequency and interstation distance, whereasthe wave - passage and site - response component are complex function of unit modulus that characterizing the phasing of thewave components.
