Modeling and Simulation of Wave Pressure Field Based on Typhoon Condition

The Holland model is used to parameterize the typhoon to construct the wind field when the typhoon transits. Then, the wind field is interpolated by time and space, and the wind field is input into the SWAN (Simulationg Wave Nearshore) mode with the spatial resolution and time step accuracy of 1h to simulate the typhoon. Through the wave field at the time of passage, the wave spectrum of the sea area under typhoon conditions is obtained, and the wave amplitude spectrum is obtained according to the wave spectrum, and then the seafloor pressure amplitude spectrum and the pressure power density spectrum, and the seabed fixed point water pressure field pressure---time series are obtained. The research results show that the sea level of the study is extended from 4th to 8th, and the amplitude of the sea water pressure field can reach 12kPa under the condition of 8th sea conditions.