Abstract
An acoustic wave scattering model with three homogeneous layers consisting of a thin solid sediment layer sandwiched by semi-infinite water and solid basalt media is formulated, solved, and analyzed for effects of physical parameters and interface roughness scattering on the reflection loss. Preliminary results are discussed. A dominant mechanism of reflection loss is the combined effects of attenuation of the sediment layer, especially or S waves and conversion and scattering processes of the basalt interface. The scattering process is found not only to produce the well-known acoustic energy loss from specular to nonspecular directions, but also to alter the conversion efficiency between P and S with the resulting loss or gain.
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