Analysis of Wave Components and Propagation Rules of Seabed Seismic Waves in Shallow Sea

摘要

In order to analyze the wave components and propagation rules of seabed seismic waves in shallow sea, the seismic wave field of shallow sea is simulated by the high-order staggered grid finite difference method based on shallow sea sound field model. The calculated results show that, the wavefront of direct, reflected and transmitted waves are pherical surface, and amplitude is proportional to one of r points the wavefront of Scholte wave is cylindrical surface, and amplitude is proportional to one of the square root of r points; the wavefront of lateral wave is conical surface, and amplitude is proportional to one of squared r.