摘要
本文绘出一种实现二维粘滞介质完全波场模型计算的方法。该方法的独到之处在于把传播时间分解成了水平时间分量和垂直时间分量两部分，在线源入射的基础上，无需繁杂的射线追踪，只考虑入射角随偏移距的变化情况便可获得包括反射纵波、转换波、多次波、折射波及面波等在内的多种波场的时间一空间道集的正演模拟记录，而且还能灵活地模拟井间和VSP地震剖面。
The article describes the method for modeling full wave field in 2-D viscoelastic medium- The method is characterized by the following essential polnts:The travel time is decomposed into horizontal component and vert1cal compo-nent.The forward modeled records of time-space trace gathers,which include vari-ous wave fields of reflected P-wave, converted wave, multiple, refracted wave and surface wave,can be produced only by considering how incident angle varies with offset,without tedious ray tracing done,under the presupposition of seismic linear source.Cross-borehole seismic section and VSP section can also be modeled success-fully.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1995年第3期351-362,共12页
Oil Geophysical Prospecting
关键词
粘弹介质
波场递推法
地震波
地震勘探
2-D viscoelastic medium, forward modeling, wave-field recursion method, time decomposition, complex reflection coefficient, complex transmission coefficient
