Scattering Of Surface Waves At Anisotropic Wave Barriers

In this paper we consider the screening effectiveness of an infilled trench for isolation from<br>near-surface ground-transmitted vibrations. The infilled trench is modeled by a vertical<br>anisotropic layer embedded into an isotropic half-space. To study surface wave scattering<br>at the layer we employ the Green’s function technique. The narrow anisotropic layer is<br>modeled by a matrix operator which relates displacement and stress fields at the left-hand<br>side and right-hand side of the layer. The matrix operator is obtained using Taylor’s series<br>decomposition. To represent the field inside the thick layer we apply forward-backward<br>decomposition of the field and calculate forward and backward scattering coefficients of<br>the layer. The results of calculations for the anisotropic layers are compared with similar<br>calculations for various isotropic layers.