Gain-frequency characteristics for several models of stratified geological medium

Abstract

© 2014, Romanian Society of Acoustics. All rights reserved. Gain-frequency characteristics of displacements of daylight area at forced oscillations are studied. Several models utilizing a layer sitting on top of a basement are considered. Together with a classical model (considering two homogeneous media), investigated are a model for the layer with absorption and a model for the layer having continuous variation of elasticity parameters at transition toward the basement. The case of linear variation of density and a constant velocity is considered in detail. For all structures under consideration, analytical expressions for displacements of daylight area are obtained.