南海中尺度背景下内波生成传播机制研究

海洋中内波和中尺度过程有着不同的时空尺度，近期南海观测资料表明这两者存在着联系，然而这两者之间的相互作用关系尚无一系统的阐述。本项目将集中于我国北部南海内波和中尺度过程丰富的深水海域，制定经济、高效的跨尺度海洋观测方案，分别从现场观测、理论分析、数值模式三个角度系统的考察和研究以吕宋海峡黑潮锋面和南海中尺度涡为代表的中尺度过程是如何影响内波生成和传播的，内波混合对中尺度涡生消过程的影响，阐明黑潮、中尺度涡与内波之间能量传递、分布、耗散过程，并提出相应的混合参数化方案。南海存在着丰富的黑潮、涡旋等中尺度过程，并且是全球内波振幅最大的区域之一，为开展此项研究提供了天然的测试场所。此项研究目的是理解和掌握南海关键海域动力过程，服务于海洋科学研究和我国经济国防建设。

Internal waves and mesoscale processes have different scales in time and space. Recent observations in the South China Sea reveal a relationship between these two phenomena, however, their interaction and related dynamics are still unclear so far. Therefore, we propose to systemically study their interaction through in situ observations, theoretically analysis and numerical models, focusing on the South China Sea where amount of internal waves and mesocalse motions have been observed. Economic and efficient observational plan will be made for this study. Through this study, we expect to understand how the Kuroshio in Luzon Strait affects the generation of internal tides, how the Kuroshio and mesoscale eddies affect the propagation of internal waves, and how the energy is transferred, redistributed and dissipated between internal waves and mesoscale eddies. Then a parameterization scheme will be proposed and applied in regional ocean models. In the South China Sea, amounts of mesoscale processes, such as the Kuroshio, mesoscale eddies, etc., exist, and the internal waves are one of the largest ones in the world. Therefore, the South China Sea provides a natural field for this study. In addition, this study can support our understanding the dynamics in the South China Sea, and also serve for our economy and surveillance.