多层介质中透射波和反射波的运动学正演理论

KINEMATICAL FORWARD PROBLEMS CONCERNING THE TRANSMITTED AND REFLECTED WAVES IN MULTILAYERED MEDIUM

武汉地质学院

本文采用射线法研究具有连续分界面的多层介质中透射波和反射波的运动学规律, 得到了它们的运动学基本方程组, 解出了在多层介质中透射波和反射波(包括多次反射)的时间场方程。如果再将波的动力学特点考虑进去, 就近似地解决了多层介质中透射波和反射波的正演问题, 从而可获得多层介质中的人工地震记录, 为进一步研究地震勘探问题提供了有效的途径。

In this paper, the kinematical regularities of the transmitted and reflected wave in multilayered medium with continuous interface were studied, their coupled equations were obtained, the solution of time-field equation of transmtted and reflected wave (including the multiples) in multilayered medium was extracted. If the characteristics in the dynamics of wave taken into account, the forward problem concerning the transmitted and the reflected waves in multilayered medium could be considered as to have been solved approximately. Therefore, the synthetic seismogram about the multilayered medium could thus be acquired and this would provide an useful tool for the further examination of seismic exploration.