基于文氏方向谱的海浪感应磁场仿真

根据Maxwell电磁理论,在地磁场中运动的海水将产生磁场;利用Weaver建立的海浪感应磁场模型,结合文氏方向谱,从理论上计算了海浪在地磁场中感应磁场的强度及频率分布特性,分析可得,随着风速的增加,海浪感应磁场对应主频率变小,而感应磁场幅值变大;随着深度的增加,海浪感应磁场按指数衰减。

Simulation of the Ocean Wave Induced Magnetic Field Based on the Venn Direction Spectrum

According to the Maxwell theory, motion of the ocean waves will generate electromagnetic field. This paper built the relationship between the sea surface wind field and the magnetic field induced by the waves using the wave induced magnetic field model, and analyzed the frequency spectrum distribution of wave induced magnetic field. The simulation results show that with the increase of the wind velocity, the frequency of wave induced magnetic rate becomes smaller, but the amplitude becomes bigger. With the in- crease of the depth, the induced magnetic field is damping according to the exponential equation.