The reflection of P-waves in a poroelastic half-space saturated with viscous fluid

Abstract

This paper presents the surface strains, rocking strains, and energy partitions in a poroelastic half-space saturated with viscous fluid during the reflection of P-waves. In this paper, the effect of seepage force due to finite skeleton permeability and viscosity of the fluid are presented, mainly to show the effect of permeability on the surface strains, rocking, and energy partitions during the reflection of fast P-waves. Biot's theory of wave propagation in fluid-saturated porous media is used to describe the motion of the medium of the half-space. Numerical results are presented in terms of the angle of incident P-waves and Poisson's ratio for various properties and degrees of solid frame stiffness. It is found that the skeleton permeability affects the strains, rocking, and energy partitions in porous, stiff media, while its effect is negligible in the case of soft soil.