Torsional Wave Frequency in Corrugated Poroelastic Layer Bonded Between Anisotropic Media

Abstract

An analytical solution is obtained for torsional surface wave propagating in pre-stressed poroelastic layer sandwiched between transversely isotropic and pre-stressed viscoelastic half-spaces with non-planer boundaries. Frequency equation has been established in closed form. Separation of variables method is adopted to obtain the dispersion relation. Substantial influence of corrugated boundary, initial stresses, porosity and inhomogeneity on the phase velocity of considered surface wave has been presented through graphs. Proposed study finds its possible applications in the fields of geophysics and seismology. Results may be extended to interpret the seismic activities near the crust-mantle boundary.