Propagation of coupled Rayleigh-gravity waves on the ocean floor

Abstract

It is shown that the Ocean-Earth crust interface can propagate gravity-sound Rayleigh waves. Dispersion properties of waves and flux of energy are derived. It is shown that the waves split into low and fast velocity branches. The fast branch has a multimode structure and has a cutoff in frequency and wave number. Numerical solutions are discussed.

Keywords

• Earthquake
• Rayleigh wave
• gravity-sound wave