We study the propagation of seismoacoustic waves in a three-layered medium consisting of a uniform isotropic deformable solid layer that is loaded with a uniform porous layer saturated with fluid. In turn, the porous layer covers a homogeneous isotropic solid half-space. This medium models the geological section in which the upper ground layer is separated from the deep rocks by a porous layer containing a significant amount of fluid. The obtained dispersion relation is analyzed and its solutions for the practically important cases are presented. The effects due to the liquid-phase motion with respect to the relatively deformable solid skeleton during the wave propagation are pointed out. The features of the dispersion curves and the spatial distribution of the mode fields, which allow one not only to determine the presence of a fluid-saturated porous layer under the upper ground layer, but also estimate the thickness and occurrence depth of the porous layer, are revealed.

中文翻译：

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具有多孔饱和层的弹性介质中的表面波分析

我们研究地震声波在三层介质中的传播，该介质由均匀的各向同性可变形固体层组成，该固体层加载有饱和流体的均匀多孔层。反过来，多孔层覆盖均匀的各向同性固体半空间。该介质模拟地质剖面，其中上地层与深层岩石被包含大量流体的多孔层隔开。分析了所获得的色散关系，并给出了在实际重要情况下的解决方案。指出了在波传播过程中液相运动对相对可变形固体骨架的影响。频散曲线的特征和模场的空间分布，