2009-2010年冬季南海东北部中尺度过程观测

刘长建; 庄伟; 夏华永; 杜岩

2009-2010年冬季南海东北部中尺度过程观测

1.
中国科学院南海海洋研究所热带海洋环境国家重点实验室, 广东广州 510301;国家海洋局南海工程勘察中心, 广东广州 510300
2.
中国科学院南海海洋研究所热带海洋环境国家重点实验室, 广东广州 510301
3.
国家海洋局南海工程勘察中心, 广东广州 510300

基金项目: 我国近海海洋综合调查与评价专项——南海北部坡折带水体环境调查与研究项目(908-01-BC10);南海北部环流的动力学诊断分析项目(0871);中国科学院知识创新工程项目(KZCX2-YW-BR-04);NSFC-广东联合基金(U1033003);863项目(2008AA09A402)。

计量
- 文章访问数: 2065
- HTML全文浏览量: 14
- PDF下载量: 2237
- 被引次数: 0
出版历程
- 收稿日期: 2010-08-10
- 修回日期: 2010-12-06

Mesoscale observation in the northeast South China Sea during winter 2009-2010

1.
State Key Laboratory of Tropical Oceanography(LTO), South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China;South China Sea Engineering Surveying Center, State Ocean Administration, Guangzhou 510300, China
2.
State Key Laboratory of Tropical Oceanography(LTO), South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China
3.
South China Sea Engineering Surveying Center, State Ocean Administration, Guangzhou 510300, China

摘要

摘要: 根据南海北部陆架陆坡海域2009-2010年冬季航次的CTD调查资料,发现西北太平洋水在上层通过吕宋海峡入侵南海,其对南海东北部上层水体温盐性质的影响自东向西呈减弱趋势,影响范围可达114°E附近。入侵过程中受东北部海域反气旋式涡旋(观测期间,其中心位于20.75°N,118°E附近) 的影响,海水的垂向和水平结构发生了很大变化,特别是涡旋中心区域,上层暖水深厚,混合层和盐度极大值层显著深于周边海域。该暖涡在地转流场、航载ADCP观测海流及卫星高度计资料中均得到了证实。暖涡的存在还显著影响了海水化学要素的空间分布,暖涡引起的海水辐聚将上层溶解氧含量较高的水体向下输运,使次表层的暖涡中心呈现高溶解氧的分布特征。
- 南海东北部 /
- 水团性质 /
- 暖涡 /
- 溶解氧
Abstract: According to the obtained CTD data of northern South China Sea (SCS) shelf and slope area during the winter cruise in 2009-2010, it found that the northwest pacific water intruded into SCS in the upper layer through Luzon Strait, its effect on tempearture and salinity of northeastern SCS upper layer water decreased from east to west and extended up to about 114°E. Due to the effect of anticyclone eddy in the northeastern SCS during intrusion processing, the vertical and horizontal structure of water mass changed remarkably, especially in the center erea of eddy, the depth of mixed layer and salinity maximum layer is evidently deeper than the surrounding area. The warm eddy was confirmed from the geostrophic current, ADCP current and satellite altimeter data. The existence of warm eddy also affacted the spacial diffusion of chemistry elements markedly. Due to the water convergency caused by warm eddy, the upper layer water with higher concentration dissolved oxygen was transported downwards which induced higher concentration dissolved oxygen existing in the center of warm eddy in upper layer.
- northeast South China Sea /
- water mass properties /
- warm eddy /
- dissolved oxygen

HTML全文

参考文献(24)

苏纪兰.南海环流动力机制研究综述[J].海洋学报,2005,27(6):1-8.

管秉贤. 南海暖流——广东外海一支冬季逆风流动的海流[J]. 海洋与湖沼, 1978, 9(2):117-127.

管秉贤. 中国东南近海冬季逆风海流[M].青岛: 青岛海洋大学出版社, 2002.

黄企洲, 王文质, 李毓湘, 等.南海海流和涡旋概况[J]. 地球科学进展, 1992, 7(5): 1-9.

SU J. Overview of the South China Sea circulation and its influence on the coastal physical oceanography outside the Pearl River Estuary[J]. Continental Shelf Research, 2004, 16: 1745-1760.

李立, 吴日升, 郭小钢. 南海的季节环流——TOPEX/Poseidon卫星测高应用研究[J].海洋学报, 2000,22 (6): 13-25.

QU T. Upper-layer circulation in the South China Sea[J].J Phys Oceanogr ,2000,30: 1450-1460.

NITANI H. Beginning of the Kuroshio[M]// STOMMEL H, YASHIDA K. Kuroshio: Physical Aspects of the Japan Current.Seattle:Univ. of Wash. Press, 1972:129-163.

LI L, WORTH D N, SU J. Anticyclonic rings from the Kuroshio in the South China Sea[J].Deep-Sea Res,Part Ⅰ, 1998,45:1469-1482.

SHAW P-T. Seasonal variation of the intrusion of the Philippine Sea water into the South China Sea[J]. J Geophys Res,1991,96: 821-827.

QU T, MITSUTDERA H, YAMAGATA T. Intrusion of the North Pacific waters into the South China Sea[J]. J Geophys Res, 2000, 150: 6415-6424.

CENTURIONI L R,NIILER P P. Observations of inflow of Philippine Sea surface water into the South China Sea through the Luzon Strait[J]. J Phys Oceanogr,2004, 34: 113-121.

WANG L P, KOBLINSKY C J,HOWDEN S. Mesoscale variability in the South China Sea from the TOPEX/Poseidon altimetry data[J]. Deep-Sea Res, Part Ⅰ, 2000,47: 681-708.

WANG G, SU J, CHU P C, Mesoscale eddies in the South China Sea observed with altimeter data[J]. Geophys Res Lett, 2003,30: 2121, doi:10.1029/ 2003GL018532.

ZHUANG W, XIE S-P, WANG D,et al. Intraseasonal variability in sea surface height over the South China Sea[J]. J Geophys Res, 2010,115, C04010, doi: 10.1029/2009JC005647.

李燕初,蔡文理,李立.南海东北海域海面高度的多尺度变异[J].海洋学报,2003,25(5):1-8.

靖春生,李立,朱大勇. 西太平洋－南海中尺度水位波动的耦合传播特征[J].科学通报,2006,51 (20): 2422-2428.

JIA Y, LIU Q. Eddy shedding from the Kuroshio bend at Luzon Strait[J]. J Oceanogr, 2004, 60(6): 1063-1069.

WU C-R,CHANG C-W J. Interannual variability of the South China Sea in a data assimilation model[J]. Geophys Res Lett, 2005, 32, L17611, doi: 10.1029/2005GL023798.

ZHUANG W, DU Y, WANG D, et al Pathways of mesoscale variability in the South China Sea[J]. Chin J Oceano and Limnol,2010, 28 (5): 1055-1067, doi: 10.1007/s00343-010-0035-x.

WANG D, XU H, LIN J, et al. Anticyclonic eddies in the northeastern South China Sea during winter 2003/2004[J]. J Oceanogr, 2008, 64: 925-935.

HUANG B, HU J, XU H, et al.Phytoplankton community at warm eddies in the northern South China Sea in winter 2003/2004[J]. Deep-Sea Res, Part Ⅱ,2010, doi: 10.1016/j.dsr2.2010.04.005.

LI L, POHLMANN T. The South China Sea warm-core ring 94S and its influence on the distribution of chemical tracers[J]. Ocean Dyn, 2002, 52: 116-122.

TIAN J, YANG Q, ZHAO W Enhanced diapycnal mixing in the South China Sea[J]. J Phys Oceanogr, 2009,39: 3191-3203, doi: 10.1175/2009JPO3899.1.

施引文献

资源附件(0)

访问统计