北部湾三维风生流及密度流模拟  

A 3-D numerical simulation of wind-driven currents in the Beibu Gulf

作　　者：夏华永[1] 李树华[1] 侍茂崇[2] 

机构地区：[1]广西海洋监测预报中心,广西北海536000 [2]青岛海洋大学海洋环境学院,山东青岛266003

出　　处：《海洋学报》2001年第6期11-23,共13页

基　　金：国家海洋局青年海洋科学基金项目 ( 973 0 1) ;广西自然科学基金 (桂科自 0 13 5 0 4 8)资助项目

摘　　要：将Casulli差分格式引入三维物理海洋模型计算 ,模拟了北部湾风生流及密度流 .模拟结果表明 ,夏季西南季风在北部湾导致一个顺时针环流 ,夏季海水密度梯度导致一个逆时针方向的环流 ,密度流明显强于风生流 ;冬季东北寒潮导致一个逆时针环流 .模拟结果不支持北部湾夏季为一顺时针环流、冬季为逆时针环流的传统结论 ,而支持终年为逆时针环流的观点 .The Casulli's difference scheme was introduced into the three dimensional ocean model in the present paper, and the wind-driven current and thermohaline current were simulated. The results show that, southwesterly monsoon in summer induces a clockwise circulation in the Beibu Gulf, and the density gradient induces an anti-clockwise one, but the density currents are more intense than the wind-driven one in summer, especially in surface layer, in addition, the northeasterly monsoon in winter induces an anti-clockwise circulation. The simulated results don't support the traditional conclusion that there is a clockwise circulation in Beibu Gulf in summer and a counter-clockwise one in winter, instead of supporting the statement that a counter-clockwise circulation exists in the Beibu Gulf all year round.

关 键 词：北部湾 Casulli差分格式 风生流 密度流 三维物理海洋模型 

分 类 号：P731.21[天文地球—海洋科学]