Taking into Account Fluid Saturation of Bottom Sediments in Marine Seismic Survey

Abstract

The seismic response from the marine bottom is numerically simulated. Acoustic equations are used to describe the dynamic behavior of a water layer. Bottom sediments are described as a porous fluid-filled medium by using the Dorovsky model. A unified algorithm for full wave modeling based on the grid-characteristic method is proposed for solving all hyperbolic systems of equations in the entire computational domain. A distinctive feature of this approach is that the necessary contact conditions at the interface of media with different rheology are set in explicit form.