南海冬、夏季环流的三维数值模拟
Three-dimensional numerical simulation of South China Sea circulation in winter and summer
-
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.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 cyclonic circulation between Xisha Islands and Zhongsha Islands sea zones, a southward western boundary current along the east shore of middle Vietnam and a local anticyclonic eddy in out-lying sea of Jinlan Bay, in the southern SCS, it is mainly shown that there is a large cyclonic meander (cyclonic eddy) in Wanantan and an anticyclonic eddy in the north of Beikangansha.In August, there is a large-scale cyclonic eddy among Dongsha 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 Bay and Liyuetan, in the meanwhile a cyclonic eddy in the east of Wanantan.Due to the actions of baroclinic effect and bottom topsgraphic effect, the current fields of middle layer to southern SCS in winter and summer are almost opposite to those of the surface layer.
-
Key words:
- Numerical simulation /
- South China Sea circulation /
- eddy /
- meander
-
Dale W L.Wind and drift currents in the South China.The Malayan Journal of Tropical(Ueography,1956.8(1):1~31 Wyrtki K.Scientific results of marine investigation of the South China Sea and Gulf of Thailand,1959~1961.Vaga Report.1961,(2):195 徐锡祯,邱章,陈惠昌.南海水平环流的概述.中国海洋湖沼学会水文气象学会学术会议论文集.北京:科学出版社,1980,137~145 中国科学院南海海洋研究所.南海海区综合调查研究报告(二).北京:科学出版社,1985,183~231 Xu Jianping,Su Jilan,Qiu Dezhong.Hydrographic analysis on the intruding of Kuroshio water into the South China Sea.In:Proceedings of Symposium of Marine Sciences in Taiwan Strait and Its Adjacent Waters.Beijing:China Ocean Press.1995,30~44 方文东,郭忠信,黄羽庭.南海南部海区的环流观测研究.科学通报,1997,42(21):2 264~2 271 许建平,苏纪兰.黑潮水入侵南海的水文分析I.1994年8~9月期间的观测结果.热带海洋,1997,16(2):1~23 曾庆存,李荣凤,季仲贞等.南海数值模拟月平均水平环流图.海洋环流研究讨会论文选集,北京:海洋出版社,1992.127~168 苏纪兰,刘先炳.南海环流的数值模拟.海洋环流研讨会论文选集.北京:海洋出版社,1992,206~215 毛明,王文质,黄企洲等.南海环流的三维数值模拟.热带海洋,1992,11(4):34~41 Shaw P T.Chao S Y.Surface circulation in the South China Sea.Deep-Sea Research,1994,41(11,12):1 663~1 683 Backhaus J O.A three-dimensional model for the simulation of shelf sea dynamics.Deutsche Hydrographische Zeitschrift.1985,38(4):165~187 黄大吉,陈宗铺,苏纪兰.三维陆架海模式在渤海中的应用1.潮流、风生环流及其相互作用.海洋学报,1996,18(5):1~13 Ihvies A M.On using turbulence energy models to develop spectral viscosity models.Continental Shelf Res.,1991,11(10):1 313~1 353 Armi L.The dynamics of the bottom boundary layer of the deep ocean.Bottom Turbulence.New York:Elsevier Scientific Publishing Company.1977,237~254 Lentz S J.Sensitivity of the inner-shelf circulation to the form of the eddy viscosity profile.J.Phys.Ckeanogr.,1995.25(1):19~28 Jones J H.Vertical mixing in the Eyuatorial Undercurrent.J.Phys.Ckeanogr.,1973,3(2):286~296 Pohlmann T.Calculating the annual cycle of the vertical eddy viscosity in the North Sea with a three-dimensional baroclinic shelf sea circulation model.Continental Shelf Res.,1996.16(2):147~161
点击查看大图
计量
- 文章访问数: 821
- HTML全文浏览量: 11
- PDF下载量: 734
- 被引次数: 0