1998年夏季南海环流的三维结构

廖光洪; 袁耀初; 王彰贵

1998年夏季南海环流的三维结构

1.
卫星海洋环境动力学国家重点实验室, 国家海洋局, 第二海洋研究所, 浙江, 杭州, 310012
2.
国家海洋局, 海洋环境预报中心, 北京, 100081

基金项目: 国家自然科学基金重大国际合作项目(40510073);国家基础研究发展规划项目(G1999043805)

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出版历程
- 收稿日期: 2005-10-15
- 修回日期: 2006-08-04

The three dimensional structure of the circulation in the South China Sea during the summer of 1998

1.
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
2.
National Center for Marine Environmental Forecasts, Beijing 100081, China

摘要

摘要: 利用1998年6月12日至7月6日南海的调查资料,采用三维海流诊断模式,计算了夏季南海三维海流,结合卫星海表面高度距平资料,得到结果如下:(1)南海北部,在吕宋岛以西海域和东沙群岛附近海域,分别存在一个反气旋式涡和东沙群岛西南的气旋式涡.(2)南海中部,越南以东海域出现由暖涡W3和冷涡C3组成的一个准偶极子.在冷涡C3和暖涡W3以北分别存在一个暖涡W2和冷涡C2.(3)在越南近岸存在较强的、北向的西边界射流,此北向射流在14°N附近离岸转为东,并流入两涡W3和C3之间.(4)南海南部,在巴拉望岛的西南海域,100m以浅水层存在反气旋式涡,而在其较深水层,此处变为气旋式涡.(5)南海环流的动力机制有两个:最重要的动力因子为斜压场与地形相互作用项,其次为风应力与地形相互作用项.(6)讨论了夏季南海环流垂向速度w分布,例如在30m层,Ekman抽吸对垂向速度w分布起着重要作用.(7)与2000年夏季南海环流的比较,1998年夏季计算海域涡旋W3,C3,C2等的位置变化并不大.
- 南海环流 /
- 海面高度距平 /
- 诊断计算 /
- 多涡结构 /
- 动力因子
Abstract: On the basis of hydrog raphic data obtained from 12 June to 6 July,1998, the three dimensional structure of circulation in the South China Sea (SCS) is computed by using three dimensional diagnostic model.The combination of sea surface height anomaly from altimeter data and numerical results provides a consistent circulation pattern for the SCS, and the main circulation features can be summ arized as follows: (1) In the northern SCS, there are a cycloniceddy C1 near Dongsha Islands and an anti-cycloniceddy W1 in the area west of Luzon Island.(2) In the central SCS, a strong eranti-cyclonic eddy W3 and a cyclonic eddy C3 compose a quasi-dipole in the area southeast of Vietnam.(3) A coastal northwardjet is present at the western boundary near the coast of Vietnam.This northward coastjet flows northward and turns eastward at the about 14°N, and then it flows southeast ward into the area between eddies W3 and C3.(4) In the sout hern SCS the current is weaker.(5) Most important dynamical mechanism is because of the joint effect of the baro clinity and relief.The second dynamical mechanism is because of the interaction between the wind stress and relief.(6) The distribution of the vertical component of current velocity is discussed.(7) Comparing of the circulation in 1998 with 2000, their change is not large.
- circulation in the SCS /
- SSHA /
- diagnostic calculation /
- multi-eddies structure /
- dynamic factors

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参考文献(29)

曾庆存,李荣凤,季仲贞,等.南海数值模拟月平均水平环流图[Z].海洋环流研讨会论文选集[C].北京:海洋出版社,1992.127-168.

SHAW P T,CHAO S Y.Surface circulation in the South China Sea[J].Deep-Sea Research (Ⅰ),1994,41(11/12):1 663-1 683.

TAKANO K,HARASHIMA A,NAMBA T.A numerical simulation of the circulation in the South China Sea-Preliminary Results[J].Acta Oceanographica Taiwanica,1998,37(2):165-186.

蔡树群,苏纪兰.南海环流的一个两层模式[J].海洋学报,1995,17(2):12-20.

METZGER E J,HURLBURT H E.Coupled dynamics of the South China Sea,the Sulu Sea,and the Pacific Ocean[J].J Geophys.Res,1996,101(C5):12 331-12 352.

CAI Shu-qun,SU Ji-lan,GAN Zi-jun,et al.The numerical study of the South China Sea upper circulation characteristics and its dynamic mechanism,in winter[J].Continental Shelf Research,2002,22:2 247-2 264.

YUAN Yao-chu,LIU Yong-gang,LIAO Guang-hong,et al.Calculation of circulation in the South China Sea during the summer of 2000 by the modified inverse method[J].Acta Oceanographica Sinica,2005,24(1):14-30.

刘勇刚,袁耀初,苏纪兰,等.1998年夏季南海环流[J].科学通报,2000,45(12):1 252-1 259.

WANG Hui-qun,YUAN Yao-chu,GUAN Wei-bing,et al.Circulation in the South China SSa during summer 2000 as obtained from observation and a generalized topography-fllowing ocean model[J].J Geophys Res,2004,109:C07007,doi: 10.1029/2003JC002134.

CHU P C,LI Rong-feng.South China Sea Isopycnal-surface circulation[J].J Phys Oceanogr,2000,30:2 419-2 438.

YUAN Yao-chu,BU Xian-wei,LIAO Guang-hong,et al.Diagnostic calculation of the upper-layer circulation in the South China Sea during the winter of 1998[J].Acta Oceanographica Sinica,2004,23(2):187-199.

WANG Gui-hua,SU Ji-lan,CHU P C.Mesoscal eddies in the South China Sea observed with altimeter data[J].Geophysical Research Letters,2003,30(21):2 121.

李立,吴日升,郭小钢.南海的季节环流——TOPEX/POSEITON卫星测高应用研究[J].海洋学报,2002,22(6):13-16.

YUAN Yao-chu,ZHAO Jin-ping,WANG Hui-qun,et al.Current measurements and spectral analyses in the upper 450m and deep layers of the northeastern South China Sea[J].Science in China(Series D),2002,45(11):1 008-1 026.

管秉贤,陈上及.中国近海海流系统[A].中华人民共和国科学技术委员会海洋组海洋综合调查办公室.全国海洋综合调查报告[R].1964.1-85.

邓松,钟欢良,王名文,等.琼东沿岸上升流及其与渔场关系[J].台湾海峡,1995,14(1):51-56.

郭飞,侍茂崇,夏综万.琼东沿岸上升流二维数值模型的诊断计算[J].海洋学报,1998,20(6):109-116.

CHAO Shenn-yu,SHAW Ping-tung,WU Sunny Y.Deep water ventilation in the South China Sea[J].Deep-Sea Research,1996,43(4):445-446.

XIE Shang-Ping,XIE Qiang,WANG Dong-xiao.Summer upwelling in the South China SSa and its role in regional climate variations[J].J Geophys Res,2003,108(C8):3261,doi: 10.1029/2003JC001867.17-1-17-13

袁耀初,苏纪兰,赵金三.东中国海陆架环流的单层模式[J].海洋学报,1982,4(1):1-11.

袁耀初,苏纪兰.陆架环流数值研究[A].冯士筰,孙文心.物理海洋数值计算[M].郑州:河南科学技术出版社,1992.474-542.

YUAN Yao-chu,SU Ji-lan XIA Sang-yun,A diagnostic model of summer on the northwest of the East China Sea[J].Progress in Oceanography,1986,17:163-176.

袁耀初,何魁荣.三维海流计算的一个方法[J].海洋学报,1982,4(6):653-666.

SARKISYAN A C.乐肯堂译.海流数值分析与预报[M].北京:科学出版社,1980.1-255.

中科院南海海洋研究所.南海海区综合调查研究报告(二)[R].北京:科学出版社,1985.204-231.

苏纪兰.南海北部环流动力机制[A].苏纪兰.南海环境与资源基础研究前瞻[C].北京:海洋出版社,2001.1-7.

柴扉,薛惠洁,侍茂崇.南海升降流分布及形成机制分析[A].柴扉,薛惠洁,许建平,等.中国海洋学文集(13)[C].北京:海洋出版社,2001.117-128.

李立,吴日升,孙湘平.上升流[A].苏纪兰,袁业立.中国近海水文[M].北京:海洋出版社,2005.272-278.

许建平,潘玉球,柴扉,等.1998年春夏季南海若干重要水文特征及其形成机制分析[A],柴扉,薛惠洁,许建平,等.中国海洋学文集(13)[C].北京:海洋出版社,2001.211-220.

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