PHYSICAL MODELLING OF ELASTIC WAVES REFLECTION FROM THE AZIMUTHALLY ANISOTROPIC MEDIUM
The results of physical modelling of elastic waves reflected from the boundary of water and low-velocity azimuthally anisotropic medium are presented. The thin-layer model of anisotropic medium was made from ABS plastic using 3D printer. The results of experiments showed that for such boundary the reflection coefficients are practically independent from the azimuth of plane of incidence at the angles of incidence less than 25°. At larger angles of incidence, the azimuthal dependence on the reflection coefficients is observed, which is most pronounced at azimuths of plane of incidence about 45-60°. The results of measurements in the layering direction are in good agreement with the theoretical reflection coefficients for the boundary of isotropic media.