高分辨率勘探与地震仪器

HIGH RESOLUTION EXPLORATION AND SEISMOGRAPHS

本文较系统地讨论了地震勘探中振幅动态范围与仪器动态范围的基本概念，指出仪器动态范围是开展高分辨率勘探的极为重要的一个基本条件，它要根据浅层强信号与深层高频弱信号的振幅动态范围来设计。如果仪器动态范围小，就录制不上高频信号，必然降低分辨率。文中也简介了在高分辨率地震勘探中如何选取最佳仪器因素的一些做法。

This paper deals systematically with the basic concepts of amplitude dynamic range and instrument dynamic in seismic exoloration, and points out that the instrument dynamic range is an extremely importaant basic prerequisite in high resolution exploration, which must be designed on the basis of amplitude dynamic ranges of shallow strong signal and deep high-frequency weak signal. If the instrument dynamic range is small, highfrequoncy signal cannot be recorded, inevitably resulting in the decrease in resolution ratio.The paper also dsscribes briefly some means for selecting optimum instrument factors in high resolution seismic exploration.