南海北部内孤立波的能量通量和热通量的研究

Solitons frequently occurred in Southern China Sea, they influence the safety of oceaneering and shipping .Their kinetic effects enhance marine ecology and the exchange of energy between sea and air. In last decades, the study of the solitons is a focused issue for scientists, and there are a series of reports about the energy flux, generation mechanism, and propagation characteristics. However，there are seldom study of the vertical heat transport and simultaneous study of energy flux, momentum flux, heat flux, and heat dissipation rate by observations. In this project, we will study the vertical heat transport of solitons and establish the relations between the vertical heat transport and the vertical maximum displacements. Further more，study of the relations and characteristics among energy flux, momentum flux, heat flux, and heat dissipation rate reveals the breaking mechanism of solitons.

中国南海北部是孤立内波多发区，它直接影响海洋工程、航运交通的安全。它的动力学效应影响着海洋生态和海气之间的能量交换。近年来孤立内波的研究一直是科学家们关注的热点，对孤立内波的能量通量、产生机制、传播特性等一系列的研究有所报道，但孤立内波的垂向热输运及同步观测研究孤立内波的能量通量、动量通量、热通量、热耗散率还很少报道。本项目观测研究孤立内波向陆坡陆架传播过程中，垂向热输运变化特征、建立热输运与孤立内波垂向最大位移的关系。进一步同步观测研究孤立内波能量通量、动量通量、热通量、热耗散率变化特征及其相关性，揭示孤立内波破碎机制。

本项目观测研究了孤立内波和内潮向陆坡陆架区传播过程中能量的演变特征，分析了孤立内波垂向热输运变化特征，建立了热输运与孤立内波垂向最大位移的关系。本项目研究了内波的混合特征，进一步揭示了高频内波的破碎机制。另外，本项目还评估了参数化方案，为模式优化选取合适的参数化方案，优化预测结果提供了参考。除此之外，本项目研究了大尺度ENSO对内潮垂直结构的影响，为深化理解多尺度海洋过程提供了观测参数。本项目取得了一系列科研成果，发表国内二区论文3篇，在JGR等国际主流刊物发表论文6篇。