THE REFLECTION OF BEAMS OF INTERNAL GRAVITY-WAVES AT A FLAT RIGID SURFACE

The linear problem of the reflection of a beam of monochromatic intern al waves at a rigid inclined wall in an exponentially stratified liqui d with viscosity and diffusion is considered. In such a medium there i s, as well as the reflected wave, a boundary-layer flow at the plane w ith split spatial length-scales for the velocity and density variation . Viscosity and diffusion restrict the limiting value of the geometric al compression coefficient of the beam. The solution has no singularit ies at critical angles of reflection. Calculations for the reflected b eam and boundary flow are performed for an incident beam radiated by a point mass source.