Analysis of Complex Typography Modulating on Internal Wave's Generation and Propagation

Abstract

We use a non-hydrostatic numerical simulation based on incompressible Navier-Stokes equations to model the generation and evolution of nonlinear internal waves formed as a result of the interaction with double-ridge topography. By employing an analysis on the different-time distribution of density field, related-vorticity field which came from different profile condition of second sill, we can find and quantify the relation between the arriving time and intensity with the second sill parameter such as the depth and extensional factors. The results and progression of the internal wave's generation and propagation show the complexity, and one of the important factors is deriving from the modulating action on the state of the internal waves initial exciting from the first sill. We also present the case of coexist and evolution of "quick wave" and "slow waves". This study to reveal the ocean internal waves generated transmission mechanism is of important value.