南海北部次表层盐度的变化及其与北赤道流分叉点的关系

杨龙奇; 许东峰; 徐鸣泉; 王俊; 师鹏飞

PDF(2628 KB)

海洋学研究 ›› 2013, Vol. 31 ›› Issue (3) : 15-24.

研究论文

南海北部次表层盐度的变化及其与北赤道流分叉点的关系

杨龙奇^1,2,3, 许东峰^*1,2, 徐鸣泉^1,2, 王俊^1,2, 师鹏飞^1,2

作者信息 +

The variation of subsurface salinity in northern South China Sea and its relationship to the bifurcation of the North Equatorial Current

YANG Long-qi^1,2,3, XU Dong-feng^*1,2, XU Ming-quan^1,2, WANG Jun^1,2, SHI Peng-fei^1,2

Author information +

文章历史 +

摘要

吕宋海峡是南海与外界水交换的重要通道,黑潮作为北太平洋最强的1支西边界流,在经过吕宋海峡时会对南海北部的环流和环境产生重要影响。本文用1991—2011年期间CTD断面实测资料和高度计资料,提取23.0~25.5 kg/m³等密度面之间的盐度极大值,研究了南海北部不同年月盐度极大值变化、黑潮入侵方式与强弱,以及盐度极大值变化与北赤道流分叉点南北移动的关系,结果表明:(1)黑潮入侵南海方式多样,既有分支形式,也有弯曲、流套形式。(2)不同年月间,黑潮入侵南海的强弱存在较大差别,120°E断面的次表层盐度极大值的变动可超过0.3。(3)北赤道流分叉点位置的南北变动对黑潮入侵南海的强弱具有重要影响:北赤道流分叉点位置偏北,黑潮入侵南海较强;北赤道流分叉点位置偏南,则黑潮入侵相对较弱。

Abstract

Luzon Strait is an important water exchange channel between South China Sea and Philippine Sea. As a famous western boundary current in the North Pacific, the Kuroshio has an important impact on the South China Sea circulation. In this research, we extracted the salinity-maximum at density of 23.0~25.5 kg/m³ and studied further the relation between the Kuroshio intrusion and bifurcation of the North Equatorial Current with CTD data of 1991—2011 and the satellite altimeter data. The results show that: (1) The ways of Kuroshio intrusion in SCS are diverse, including branch, bending and loop. (2) In different years, Kuroshio intrusion is quite different and the range of salinity-maximum can be more than 0.3 in the 120°E section. (3) The bifurcation of North Equatorial Current has a great effect on the intrusion of Kuroshio in South China Sea: When the bifurcation of North Equatorial Current moves to north, the Kuroshio intrusion in South China Sea is strong; when it moves to south, the Kuroshio intrusion is weak.

导出引用

杨龙奇, 许东峰, 徐鸣泉, 王俊, 师鹏飞. 南海北部次表层盐度的变化及其与北赤道流分叉点的关系[J]. 海洋学研究. 2013, 31(3): 15-24

YANG Long-qi, XU Dong-feng, XU Ming-quan, WANG Jun, SHI Peng-fei. The variation of subsurface salinity in northern South China Sea and its relationship to the bifurcation of the North Equatorial Current[J]. Journal of Marine Sciences. 2013, 31(3): 15-24

中图分类号： P731

参考文献

[1] NITANI H. Beginning of the Kuroshio[M]//STOMMEL H, YOSHIDA K. Kuroshio, physical aspects of the Japan current. Seattle: University of Wash Press,1972:129-163.
[2] LI Li, NOWLIN W D, SU Ji-lan. Anticyclonic rings from the Kuroshio in the South China Sea[J]. Deep Sea Research Part I: Oceanographic Research Papers,1998,45(9):1 469-1 482.
[3] XUE Hui-jie, CHAI Fei, SHI Mao-chong. The loop current incursion of Kuroshio and main circulations in the northeastern South China Sea[M]//XUE Hui-jie, CHAI Fei, XU Jian-ping, et al. Oceanography in China: Thirteenth set. Beijing: Ocean Press,2001:23-37.
薛惠洁,柴扉,侍茂崇. 南海东北部黑潮的入侵流套及其环流[M]//薛惠洁, 柴扉,许建平,等. 中国海洋学文集: 第13集. 北京: 海洋出版社, 2001:23-37.
[4] ZHANG Fan, HUANG Qi-zhou, WANG Wen-zhi, et al. Dignostic calculations for the seasonal averaged current field in the deep water zone of the South China Sea[J]. Tropic Oceanology,1994,13(3):8-16.
章凡,黄企洲,王文质, 等.南海深水区季平均海流的诊断计算[J].热带海洋学报,1994,13(3):8-16.
[5] LI Wei, LI Li, LIU Qin-yu. Water mass analysis in Luzon Strait and northern South China Sea[J]. Journal of Oceanography in Taiwan Strait,1998,17(2):207-213.
李薇,李立,刘秦玉. 吕宋海峡及南海北部海域的水团分析[J]. 台湾海峡,1998,17(2):207-213.
[6] LIU Qin-yu, LIU Zhuo-teng, ZHENG Shi-pei, et al. The deformation of Kuroshio in the Luzon Strait and its dynamics[J]. Journal of Ocean University of Qingdao,1996(4):413-420.
刘秦玉,刘倬腾,郑世培,等.黑潮在吕宋海峡的形变及动力机制[J].青岛海洋大学学报,1996(4):413-420.
[7] LIU Qin-yu, LI Wei, XU Qi-chun. Interaction between the northeast monsoon and ocean circulation in South China Sea[J]. Oceanology et Limnologia Sinsca,1997,28(5):493-502.
刘秦玉,李薇,徐启春.东北季风与南海海洋环流的相互作用[J].海洋与湖沼,1997,28(5):493-502.
[8] LI Li, SU Ji-lan, XU Jian-ping. Detached Kuroshio rings in the South China Sea[J]. Tropic Oceanology,1997,16(2):42-57.
李立,苏纪兰,许建平.南海的黑潮分离流环[J].热带海洋,1997,16(2):42-57.
[9] WANG Gui-hua, SU Ji-lan, CHU P C. Mesoscale eddies in the South China Sea observed with altimeter data[J]. Geophysical Research Letters,2003,30(21):2 121-2 123.
[10] JIA Ying-lai, LIU Qin-yu. Eddy shedding from the Kuroshio bend at Luzon strait[J]. Journal of Oceanography,2004,60(6):1 063-1 069.
[11] YUAN Dong-liang, HAN Wei-qing, HU Dun-xin. Surface Kuroshio path in the Luzon Strait area derived from satellite remote sensing data[J]. Journal of Geophysical Research,2006,111(C11):1-16.
[12] XU Jian-ping, SU Ji-lan. Hydrographic analysis on the intrusion of the Kuroshio into the South China Sea Ⅱ: Observational results during the cruise from August to September in 1994[J]. Tropic Oceanology,1997,16(2):1-23.
许建平,苏纪兰.黑潮水入侵南海的水文分析Ⅱ:1994年8—9月期间的观测结果[J].热带海洋,1997,16(2):1-23.
[13] SU Ji-lan. Overview of the South China Sea circulation and its dynamics[J]. Acta Oceanologiga Sinica,2005,27(6):1-8.
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.
[14] LIU Zeng-hong, LI Lei, XU Jian-ping, et al. Analysis of water masses in the South China Sea in the summer of 1998[J]. Donghai Marine Science,2001,19(3):1-10.
刘增宏,李磊,许建平,等.1998年夏季南海水团分析[J].东海海洋,2001,19(3):1-10.
[15] QIU De-zhong, YANG Tian-hong, GUO Zhong-xin. A west-flowing current in the northern part of the South China Sea in summer[J]. Tropic Oceanology,1984,3(4):65-73.
仇德忠,杨天鸿,郭忠信.夏季南海北部一支向西流动的海流[J].热带海洋,1984,3(4):65-73.
[16] GUO Zhong-xin, YANG Tian-hong, QIU De-zhong. The South China Sea warm current and the sw-ward current on its right side in winter[J]. Tropic Oceanology,1985,4(3):1-8.
郭忠信,杨天鸿,仇德忠.冬季南海暖流及其右侧的西南向海流[J].热带海洋,1985,4(3):1-8.
[17] SHAW P T. The seasonal variation of the intrusion of the Philippine sea water into the South China Sea[J]. Journal of Geophysical Research,1991,96(C1):821-827.
[18] CENTURIONI L R, NIILER P P, LEE D K. Observations of inflow of Philippine Sea surface water into the South China Sea through the Luzon Strait[J]. Journal of Physical Oceanography,2004,34(1):113-121.
[19] LI Feng-qi, LI Lei, WANG Xiu-qin, et al. Water masses in the South China Sea in summer and winter of 1998 and water exchange between the Pacific and the South China Sea[J]. Journal of Ocean University of Qingdao, 2002,32(3):329-336.
李凤岐,李磊,王秀芹,等.1998年夏、冬季南海的水团及其与太平洋的水交换[J].青岛海洋大学学报,2002,32(3):329-336.
[20] QU Tang-dong. Upper-layer circulation in the South China Sea[J]. Journal of Physical Oceanography,2000,30(6):1 450-1 460.
[21] CARUSO M J, GLEN G G, ROBERT C B. Interannual variability of the Kuroshio intrusion in the South China Sea[J]. Journal of Oceanography,2006,62(4):559-575.
[22] WU C R. Interannual modulation of the Pacific Decadal Oscillation (PDO) on the low-latitude western North Pacific[J]. Progress in Oceanography,2013,110: 49-58.
[23] TOOLE J, MILLARD R, WANG Z, et al. Observations of the Pacific north equatorial current bifurcation at the Philippine coast[J]. Journal of Physical Oceanography,1990,20:307-318.
[24] QIU Bo, CHEN Shui-ming. Interannual-to-decadal variability in the bifurcation of the North Equatorial Current off the Philippines[J]. Journal of Physical Oceanography,2010,40(11):2 525-2 538.
[25] SHEREMET V. Hysteresis of a western boundary current leaping across a gap[J]. Journal of Physical Oceanography,2001,31(5):1 247-1 259.
[26] YAREMCHUK M, QU Tang-dong. Seasonal variability of the circulation near the Philippine coast[J]. Journal of Physical Oceanography,2004,34(4):844-855.
[27] QU Tang-dong, LUKAS R. The bifurcation of the North Equatorial Current in the Pacific[J]. Journal of Physical Oceanography,2003,33(1):5-18.
[28] WANG Qing-ye, HU Dun-xin. Bifurcation of the North Equatorial Current derived from altimetry in the Pacific Ocean[J]. Journal of Hydrodynamics,2006,18(5):620-626.
[29] QIU Bo, LUKAS R. Seasonal and interannual variability of the North Equatorial Current, the Mindanao Current and the Kuroshio along the Pacific western boundary[J]. Journal of Geophysical Research,1996,101(C5):12 315-12 330.
[30] KIM Y Y, QU Tang-dong, JENSEN T, et al. Seasonal and interannual variations of the North Equatorial Current bifurcation in a high resolution OGCM[J]. Journal of Geophysical Research,2004,109(C3):C03040.
[31] SHI Jing-tao. The data quality control method research and software realization for marine envrironment real-time observation[D]. Tianjin: National Ocean Technology Center, 2010.
史静涛.海洋环境实时观测数据质量控制方法研究与软件实现[D].天津:国家海洋技术中心,2010.
[32] LE TRAON P Y, NADAL P Y F, DUCET N. An improved mapping method of multi-satellite altimeter data[J]. J Atmo Oceanic Technol,1998,15(2):522-534.
[33] DUCET N, LE TRAON P Y, REVERDIN G. Global high resolution mapping of ocean circulation from TOPEX/Poseidon and ERS-1 and-2[J]. Journal of Geophysical Research,2000,105(C8):19 477-19 498.
[34] RIO M H, SCHAEFFER P, MOREAUX G, et al. A new mean dynamic topography computed over the global ocean from GRACE data, altimetry and in-situ measurements[C]//Poster communication at OceanObs09 symposium. Venice: IOC/UNESCO and ESA,2009:21-25.
[35] QU Tang-dong, MITSUDERA H, YAMAGATA T. Intrusion of North Pacific water into the South China Sea[J]. Journal of Geophysical Research,2000,105(C3):6 415-6 424.
[36] METZGER E J, HURLBURT H E. The non-deterministic nature of Kuroshio penetration and eddy shedding in the South China Sea[J]. Journal of Physical Oceanography,2001,31(7):1 712-1 732.
[37] HWANG C, KAO R. TOPEX/POSEIDON-derived space-time variations of the Kuroshio current: Applications of a gravimetric geoid and wavelet analysis[J]. Geophysical Journal International,2002,151(3):835-847.
[38] HWANG C, WU C R, KAO R. TOPEX/Poseidon observations of mesoscale eddies over the subtropical countercurrent: Kinematic characteristics of an anticyclonic eddy and a cyclonic eddy[J]. Journal of Geophysical Research,2004,109(C8): doi: 10.1029/2003JC002026.