S.A Sahu - Department of Applied Mathematics, Indian Institute of Technology (Indian School of Mines), Dhanbad-۸۲۶۰۰۴, Jharkhand, India
S Karmakar - Department of Applied Mathematics, Indian Institute of Technology (Indian School of Mines), Dhanbad-۸۲۶۰۰۴, Jharkhand, India

A Mathematical model has been considered to study the reflection and refraction phenomenon of plane wave at the interface of an isotropic liquid medium and a triclinic (anisotropic) half-space. The incident plane qP wave generates three types of reflected waves namely quasi-P (qP), quasi-SV (qSV) and quasi-SH (qSH) waves in the triclinic medium and one refracted P wave in the isotropic liquid medium. Expression of phase velocities of all the three quasi waves have been calculated. It has been considered that the direction of particle motion is neither parallel nor perpendicular to the direction of propagation in anisotropic medium. Some specific relations have been established between directions of motion and propagation. The expressions for reflection coefficients of qP, qSV, qSH and refracted P waves with respect to incident qP wave are obtained. Numerical computation and graphical representations have been performed for the reflection coefficient of reflected qP, reflected qSV, reflected qSH and refraction coefficient of refracted P wave with incident qP wave.

Reflection, Refraction, Plane wave, Triclinic