内波波-波相互作用的KP模拟

The KP Simulation of the Internal Wave-wave Interactions

在内波多发海区,多个内孤立波可以发生波-波相互作用。在一定条件下,内孤立波相互作用可以产生振幅和波速都增大的孤立波并且有多种形态。二维KP方程适用于两列非线性内孤立波相互作用的理论研究。本文基于KP方程,并结合乔治亚海峡内孤立波的观测资料和航拍技术,对三种内孤立波相互作用后的波形进行了初步模拟。模拟结果较好的反映了内孤立波的多维特征,从而更直观地观察和了解两列波相互作用后的形态,并突出了KP方程在波-波相互作用的信息提取和模拟方面的巨大优势。

In the sea area,where the internal waves occur frequently,multiple internal solitary waves can have wave-wave interactions,the wave phase and speed may have some change after that.Under certain conditions,a new solitary wave generated within the wave amplitude and speed increased due to the interaction and there will be a variety of patterns after the interaction.The KP equation is applied to the theoretical research of two nonlinear internal wave interactions.Based on the KP equation and combine with the observation data in the Strait of Georgia and aerial technology,I conduct a preliminary simulation corresponding to three patterns of the internal waves after the interaction.The simulation results better reflect the multi-dimensional characteristics of the solitary wave,and we can better understand the patterns after the interaction.So it has indicated that the KP equation has a big advantage in the information extraction and simulation inversion aspects of the wave-wave interactions.