Abstract
In this paper, the basic governing equations for isotropic and homogeneous generalized thermoelastic half-space under magnetic field, temperature field and initial stress. The reflection coefficient of thermoelastic plane waves at the free surface of an elastic half-space, which is initially stressed, normal magnetic field and thermally insulated from the outer space has been investigated. It is shown that there exist three plane waves, namely a thermal wave, a P-wave and an SV-wave. The numerical computations are carried out for a particular model. The effect of magnetic field, initial stress and temperature field on the reflection coefficient are shown graphically after numerical calculation. This change of behavior of the reflected elastic waves due to temperature, magnetic field and initial stress may be used to know the more accurate nature of the seismic waves. The results indicate that the effect of the magnetic field, wave number and initial stress on reflection coefficient are very pronounced.