对南海主要出流通道的诊断及讨论  

Diagnostic calculations and discussions on main outflow passage of South China Sea

作　　者：董丹鹏[1,2] 周伟东[1] 杨阳[3] 杜岩[1] 

机构地区：[1]中国科学院南海海洋研究所热带海洋环境动力学重点实验室,广东广州510301 [2]中国科学院研究生院,北京100049 [3]国家海洋局南海工程勘察中心,广东广州510300

出　　处：《热带海洋学报》2008年第6期1-5,共5页Journal of Tropical Oceanography

基　　金：中国科学院三期创新项目(KZCX2-YW-214);ARGO973国家重点项目(2007CB816004);国家自然科学基金项目(40776009)

摘　　要：通过一个基于质量、热量和盐量守恒的最优化盒子模型,探讨南海的主要出流通道,并详细阐述了该盒子模型中最优化的物理含义,指出这是一种平流排热、排盐最高效的系统。计算结果表明,卡里马塔海峡是南海最主要的出流通道;南海海表有巨大的热通量和淡水通量输入,作为一个热盐守恒的系统,将高温低盐的海水从宽阔的卡里马塔海峡排出是维持整个海区热盐平衡最快速有效的途径。应用更为复杂的、考虑了热盐结构和动力学因素的逆方法进一步地验证了以上结果,同时逆方法结果还揭示了吕宋海峡断面流速分布的一些特征。Based on the constraints of mass, heat and salt conservations, an optimized box model is developed to identify the main outflow passage of the South China Sea. The physical meaning of the box model is described in detail. The diagnostic calculations shows that the Kalimantan Strait is the main outflow passage which is the most efficient pathway to balance the huge mount of heat flux and large precipitation gains in the surface layer. The results are confirmed by an inverse method, in which the details of dynamics and thermohaline structures are considered. Optimization is the most efficient way to estimate the heat and salt budgets. The structure of velocity distribution across the Luzon Strait is also revealed by the in- verse method.

关 键 词：盒子模型 最优化 海峡 输运 逆方法 南海 

分 类 号：P731[天文地球—海洋科学]