【摘要】 表层结构研究的目的,是通过对地震勘探区内地表及近地表沉积物质速度和厚度的变化分析,建立相应的表层结构深度-速度模型,从而求取各观测点的静校正量,以消除地表及近地表速度和厚度变化对地震记录相邻道产生的静校时差。虽然非地震技术获取的数据不能直接用于表层结构深度-速度模型的建立,但可以利用与岩性有关的非地震物性参数刻画地表及近地表地质体的变化规律,从而建立地表及近地表地质模型,在此基础上,利用地震微测井和小折射等数据建立地表及近地表深度-速度模型。这种方法,其静校正量的求取具有唯一性。更多还原

【Abstract】 The study purpose of surface structure is to develop corresponding depth-velocity model of surface structure, based on the variation of velocity and depth of surface and near surface uncemented sediments in seismic survey area, and using the static correction data from each observation point to delete the interference (moveout statics) of the variation on adjacent channel. Although data acquired by nonseismic technology can not directly be used to develop such a model, but can used to describe the variation of surface or near surface geologic body, followed by developing the velocity-depth model using data from seismic micro log and refraction. This method for developing the velocity-depth model of surface and near surface according to the geological model is of uniqueness for getting static correction quantity.更多还原