EXPERIMENTAL-OBSERVATION OF SURFACE-WAVE PROPAGATION FOR A TRANSVERSELY ISOTROPIC MEDIUM

Velocity anisotropy of surface-wave propagation in a transversely isot ropic solid has been observed in a laboratory study. In this study, Ph enolite(TM), an electrical insulation material, was used as the transv ersely isotropic media (TIM), and a vertical seismic profiling (VSP) g eometry was used to record seismic arrivals and to separate surface wa ves from shear waves. Results show that surface waves that propagate w ith different velocities exist at certain directions.