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共反射点地震技术提供了波旅行路径的重复资料,因而可以直接确定这个界面的均方根速度。速度谱与其它速度分析一样,起初是为了确定最佳叠加速度而发展起来的。而且发现,速度谱还可能在地质剖面上提供与岩性有关的资料和显示地层圈闭的变化。本文将概略地叙述计算速度谱展示图的基本原理。
Reflective point seismic techniques provide repetitive data on the travel path of a wave and therefore determine the root mean square velocity of the interface directly. The velocity spectrum, like other velocity analyzes, was originally developed to determine the optimum stacking velocity. It has also been found that the velocity spectrum may also provide lithological-related information on the geological profile and show changes in the formation trap. This article will outline the basic principles of calculating a velocity spectrum display.