POINT SOURCE WAVES NEAR THE INTERFACE BETWEEN ELASTIC AND LIQUID MEDIA

摘要

Combined surface waves are under consideration; they can be represented as a combination of whispering gallery waves (concentrated near the boundary in a layer of width O(ω~(-2/3)) as ω→∞, where ω is the frequency) and standard surface waves (exponentially decaying with distance from the interface with exponent proportional to ω), or waves oscillating with distance from the boundary. Those waves are obtained near the boundary z = 0 of an inhomogeneous elastic medium z > 0 (propagation velocities a(z) and b(z)) and an inhomogeneous liquid (the velocity in the liquid is ao(z)). In the latter case, there are wave fields propagating with phase velocity close to the velocities of Stonely and Rayleigh waves, and also close to the velocities ao, b, and a on the interface. Bibliography: 10 titles.