关于地震波散射波场属性的基本研究

当地震波传播过程中遇到异常体时往往会在间断点处产生绕射现象,这是识别断层及其他构造的一个重要因素。然而,在实际情况下,绝大多数异常体尤其是金属矿藏,由于其形态并不是规则的,且尺度较小,从而无法产生很好的绕射波,取而代之的却是大量富含介质不规则信息的散射现象.近年来,特别是在金属矿地震勘探中,很多人错误地将散射理解为绕射。通过对一个特殊模型的正演模拟,系统地说明二者之间的差别以及散射波场的一些基本特征。

The Primary Research about Scatter Field

There will always be diffractive phenomena at the disconnected points where seismic wave transmits on them,undoubtedly,it is one of the most important factors,which can be used for faults identification.However,in fact,lots of the abnormities,especially the metal mines,with irregular shapes and little scale,which can not lead to obvious diffraction wave,but scatter instead.Nowadays, lots of people misunderstand the scatter wave as diffraction especially in the field of metal mines exploration,and the aim of this paper is showing the difference between the wave phenomena by the numbers through a special model forwarding,some base characters of scatter wave will be gave out,at the same time.