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
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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.
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关键词:
- 北部湾 /
- Casulli差分格式 /
- 风生流 /
- 密度流
Abstract: 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 counte-rclockwise circulation exists in the Beibu Gulfall year round.-
Key words:
- the Beibu Gulf /
- Casulli’s difference scheme /
- wind-driven currents /
- density currents
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