EFFECTS OF LOW SOUND VELOCITY AND GRAVITY ON WAVE PROPAGATION IN OCEANIC STRUCTURE

Abstract

The effects of solid-fluid interactions and gravity on wave propagation in the SOFAR channel are investigated by using a discrete wavenumber and normal mode superposition method. Numerical results show that the arrival time of the gravity perturbated wave which has the largest amplitude is delayed. Therefore, it is possible that the propagation of TSUNAMI is largely affected by the compressibity of fluid as well as the heterogeneity of the sound velocity of fluid. Another effect of the SOFAR channel on wave propagation is in that the fundamental Rayleigh wave shows the anormalous dispersion property.