| 南海冬、夏季环流的三维数值模拟 |
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| 引用本文： | 蔡树群,王文质.南海冬、夏季环流的三维数值模拟[J].海洋学报,1999,21(2):27-33. |
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| 作者姓名： | 蔡树群 王文质 |
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| 作者单位： | 中国科学院南海海洋研究所, 广州 510301 |
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| 基金项目： | 国家自然科学基金!49476279，中德海洋科技项目 |
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| 摘 要： | 本文利用一个斜压三维陆架海模式——HAMSOM模式对12月份和8月份的南海环流进行数值模拟,结果为:对上层流场,在12月份,在西沙群岛－中沙群岛海区间呈现一个气旋式环流,在越南中部东岸存在一支南向西边界流,在金兰湾的远海为一局地反气旋涡,在南海南部,主要表现为万安滩的气旋式大弯曲(气旋涡)及在北康暗沙北侧的反气旋涡;在8月份,在东沙群岛－中沙群岛－吕宋岛西侧海域间存在一大尺度的气旋涡,在南海西部主要表现为以西沙群岛南部的气旋涡与金兰湾－礼乐滩间的反气旋式大环流相对峙的局面,同时在万安滩东侧有－气旋涡.由于斜压效应、底形效应的作用,使冬、夏季的南海南部中层流场几乎与上层流场相反.
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| 关 键 词： | 数值模拟 南海环流 涡旋 弯曲 |
| 收稿时间： | 1997/9/30 0:00:00 |
| 修稿时间： | 4/5/1998 12:00:00 AM |
Three-dimensional numerical simulation of South China Sea circulation in winter and summer |
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| Cai Shuqun and Wang Wenzhi.Three-dimensional numerical simulation of South China Sea circulation in winter and summer[J].Acta Oceanologica Sinica (in Chinese),1999,21(2):27-33. |
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| Authors: | Cai Shuqun and Wang Wenzhi |
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| Institution: | South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301 |
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| Abstract: | A baroclinic three dimensional shelf sea model-HAMSOM model is employed to simulate the South China Sea(SCS) circulation in December and August. The result is that: for the upper layer circulation, in December, there exists a cycloniccirculation between Xisha Islands and Zhongsha Islands sea zones, a southward western boundary current along the east shore ofmiddle Vietnam and a local anticyclonic eddy in out-lying sea of Jinlan Bay, in the southern SCS, it is mainly shown that thereis a large cyclonic meander (cyclonic eddy) in Wanantan and an anticyclonic eddy in the north of Beikangansha. In August, thereis a large-scale cyclonic eddy among Dengsha Islands,Zhongsha Islands and western sea areas of Luzon Island, in the western SCS,it is mainly shown that there is a cyclonic eddy in the south of Xisha Islands against an anticyclonic circulation between Jinlan Bayand Liyuetan, in the meanwhile a cyclonic eddy in the east of Wanantan. Due to the actions of baroclinic effect and bottom tope-graphic effect, the current fields of middle layer to southern SCS in winter and summer are almost opposite to those of the surfacelayer. |
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| Keywords: | Numerical simulation South China Sea circulation eddy meander |
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