东印度沿岸流的季节变化及其热盐输运

doi:10.11978/2021051

热带海洋学报 ›› 2022, Vol. 41 ›› Issue (2): 38-51.doi: 10.11978/2021051CSTR: 32234.14.2021051

东印度沿岸流的季节变化及其热盐输运

辛红雨^1,²(), 谢强^1,^6,⁷(), 王卫强^3,^4,⁵

1. 中国科学院深海科学与工程研究所, 海南三亚 572000
2. 中国科学院大学, 北京 100049
3. 南方海洋科学与工程广东省实验室(广州), 广东广州 511458
4. 热带海洋环境国家重点实验室(中国科学院南海海洋研究所), 广东广州 510301
5. 中国科学院南海生态环境工程创新研究院, 广东广州 511458
6. 青岛海洋科学与技术国家实验室区域海洋动力学与数值模拟功能实验室, 山东青岛 266061
7. 中国科学院海洋大科学研究中心, 山东青岛 266071

收稿日期:2021-04-15 修回日期:2021-07-20 出版日期:2022-03-10 发布日期:2021-08-02
通讯作者: 谢强
作者简介:辛红雨(1994—), 男, 河南省周口市人, 博士研究生, 主要从事海洋环流等方面的研究。email: xinhy@idsse.ac.cn
基金资助:
中国科学院战略性先导科技专项(XDA20060502);国家自然科学基金项目(91958202);国家自然科学基金项目(41521005);南方海洋科学与工程广东省实验室(广州)人才团队引进重大专项(GML2019ZD0306);中国科学院南海生态环境工程创新研究院自主部署项目(ISEE2018PY06);中国科学院重点部署项目(ZDRW-XH-2019-2)

Seasonal variation of East India Coastal Current and its transports of heat and salt

XIN Hongyu^1,²(), XIE Qiang^1,^6,⁷(), WANG Weiqiang^3,^4,⁵

1. Institude of deep-sea science and engineering, Chinese Academic Science, Sanya 572000, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Southern marine science and engineering Guangdong laboratory (Guangzhou), Guangzhou 511458, China
4. State Key Laboratory of Tropical Oceanography (South China Sea Institute of Oceanology, Chinese Academy of Sciences), Guangzhou 510301, China
5. Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 511458, China
6. Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China
7. Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China

Received:2021-04-15 Revised:2021-07-20 Online:2022-03-10 Published:2021-08-02
Contact: XIE Qiang
Supported by:
Strategic Priority Research Program of Chinese Academy of Sciences(XDA20060502);National Natural Science Foundation of China(91958202);National Natural Science Foundation of China(41521005);Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)(GML2019ZD0306);Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences(ISEE2018PY06);Key Research Program of the Chinese Academy of Sciences(ZDRW-XH-2019-2)

摘要/Abstract

摘要：

基于卫星高度计数据、模式数据和同化资料揭示了东印度沿岸流(East India Coastal Current, EICC)年周期上的时空分布特征, 并探讨了其可能的影响机制及热盐输运。在年周期上EICC呈现3种分布状态, 受季风影响, 在东北季风前期(10—12月)和后期(2—5月)为一致的南向(北向)流动; 而6—8月EICC呈3段式分布, 与另外两个时间段明显不同, 表现为9°N以南、16°N以北区域的南向流动和9°—16°N区域的北向流动。前人研究认为印度东海岸的局地风应力是EICC的主要机制, 本研究发现除局地风应力外, 来自孟加拉湾中部的艾克曼抽吸(Ekman Pumping)在全年也发挥着重要作用, 并在2—5月(10—12月)驱动EICC的北向(南向)流动, 而局地风应力则在10—12月有利于EICC的南向流动。EICC是孟加拉湾低盐水向赤道东印度洋和阿拉伯海输运的一个因素, 在海盆间的热盐交换上发挥着重要作用。EICC的热输运在6—12月(2—5月)有利于(不利于)湾内温度的升高; 盐输运则在全年都有利于孟加拉湾内盐度的增加。此外, EICC的一致南向(北向)流动以及3段式结构促进了湾内热盐的再分配, 对于维持北印度洋的热量和盐度收支平衡具有重要作用。

关键词: 东印度沿岸流, 热盐输运, 局地风应力, 埃克曼抽吸, 开尔文波

Abstract:

Using satellite altimeter, model and assimilation data, we reveal the spatial and temporal distribution characteristics of the East India Coastal Current (EICC) in the annual cycle, and discuss its possible mechanism, and heat and salt transports. In the annual cycle, the EICC presents three distribution states. Affected by the monsoon, it flows southward (northward) in the early stage (October to December) and late stage (February to May) of the northeast monsoon, while it distributes in three stages from June to August, which is significantly different from the other two periods, showing southward flow in the areas south of 9°N, north of 16°N and northward in the area between 9°N and 16°N. Previous studies suggested that the local wind stress along the east coast of India is the main mechanism of the EICC. In addition to the local wind stress, the Ekman Pumping in the central Bay of Bengal (BOB) plays an important role during the whole year, and drives the northward (southward) flow of the EICC from February to May (October to December), while the local wind stress is conducive to the southward flow of the EICC from October to December. The EICC is a factor for the transport of low-salinity water from the BOB to the Equatorial East Indian Ocean and the Arabian Sea, which plays an important role in the heat and salt exchanges between the basins. The heat transport of the EICC from June to December (February to May) is favorable (unfavorable) to the temperature increase in the BOB; salt transport is conducive to the increase of salinity in the BOB throughout the year. The transport characteristics of the EICC promote the redistributions of heat and salt in the BOB and play an important role in maintaining the heat and salinity budgets in the northern Indian Ocean.

Key words: East India Coastal Current, heat and salt transports, local wind stress, Ekman Pumping, Kelvin wave

中图分类号:

P737.14

辛红雨, 谢强, 王卫强. 东印度沿岸流的季节变化及其热盐输运[J]. 热带海洋学报, 2022, 41(2): 38-51.

XIN Hongyu, XIE Qiang, WANG Weiqiang. Seasonal variation of East India Coastal Current and its transports of heat and salt[J]. Journal of Tropical Oceanography, 2022, 41(2): 38-51.

图/表 10

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参考文献 40

[1]	EKANAYAKA K B S S J, 王卫强, 2019. 斯里兰卡穹顶区的形成和演变机制分析[J]. 南京信息工程大学学报(自然科学版), 11(2): 198-207.
	EKANAYAKA K B S S J, WANG WEIQIANG, 2019. Mechanisms of the Sri Lanka Dome and its evolutionary aspects[J]. Journal of Nanjing University of Information Science and Technology (Natual Science Edition), 11(2): 198-207 (in English with Chinese abstract).
[2]	高立宝, 于卫东, 2009. 孟加拉湾局地动力过程的季节变化研究[J]. 海洋科学进展, 27(3): 312-323.
	GAO LIBAO, YU WEIDONG, 2009. Study on seasonal variation of local dynamic process in the Bay of Bengal[J]. Advances in Marine Science, 27(3): 312-323. (in Chinese with English abstract)
[3]	邱云, 李立, 2007. 孟加拉湾上层地转环流周年变化的遥感研究[J]. 海洋学报, 29(3): 39-46.
	QIU YUN, 2007. Annual variation of geostrophic circulation in the Bay of Bengal observed with TOPEX/Poseidon altimeter data[J]. Acta Oceanologica Sinica, 29(3): 39-46. (in Chinese with English abstract)
[4]	邱云, 李立, 周喜武, 2008. 斯里兰卡冷涡及其成因分析[J]. 热带海洋学报, 27(4): 45-51.
	QIU YUN, ZHOU XIWU, 2008. Sri Lanka cold eddy and its generation mechanism analysis[J]. Journal of Tropical Oceanography, 27(4): 45-51. (in Chinese with English abstract)
[5]	张玉红, 徐海明, 杜岩, 等, 2009. 阿拉伯海东南海域盐度收支的季节变化[J]. 热带海洋学报, 28(5): 66-74.
	ZHANG YUHONG, XU HAIMING, DU YAN, et al, 2009. Seasonal variability of salinity budget in the southeastern Arabian Sea[J]. Journal of Tropical Oceanography, 28(5): 66-74. (in Chinese with English abstract)
[6]	郑佳喻, 徐康, 陈更新, 等, 2018. 热带印度洋环流动力与季风相互作用研究进展[J]. 南京信息工程大学学报(自然科学版), 10(3): 275-281.
	ZHENG JIAYU, XU KANG, CHEN GENGXIN, et al, 2018. Research progress on the interaction between tropical Indian Ocean circulation dynamics and monsoon[J]. Journal of Nanjing University of Information Science and Technology (Natural Science Edition), 10(3): 275-281. (in Chinese with English abstract)
[7]	BURNS J M, SUBRAHMANYAM B, MURTY V S N, 2017. On the dynamics of the Sri Lanka Dome in the Bay of Bengal[J]. Journal of Geophysical Research, 122(9): 7737-7750.
[8]	CHEN GENGXIN, WANG DONGXIAO, HOU YIJUN, 2012. The features and interannual variability mechanism of mesoscale eddies in the Bay of Bengal[J]. Continental Shelf Research, 47: 178-185. doi: 10.1016/j.csr.2012.07.011
[9]	CHENG XUHUA, XIE SHANGPING, MCCREARY J P, et al, 2013. Intraseasonal variability of sea surface height in the Bay of Bengal[J]. Journal of Geophysical Research: Oceans, 118(2): 816-830. doi: 10.1002/jgrc.20075
[10]	CUTLER A N, SWALLOW J C, 1984. Surface currents of the Indian Ocean (to 25S, 100E):compiled from historical data archived by the Meteorological Office, Bracknell, UK[R]. Wormley, UK: Institute of Oceanographic Sciences.
[11]	DURAND F, SHANKAR D, BIROL F, et al, 2008. Estimating boundary currents from satellite altimetry: A case study for the East Coast of India[J]. Journal of Oceanography, 64(6): 831-845. doi: 10.1007/s10872-008-0069-2
[12]	DURAND F, SHANKAR D, BIROL F, et al, 2009. Spatiotemporal structure of the East India Coastal Current from satellite altimetry[J]. Journal of Geophysical Research: Oceans, 114(C2): C02013.
[13]	HORMANN V, CENTURIONI L R, GORDON A L, 2019. Freshwater export pathways from the Bay of Bengal[J]. Deep Sea Research Part Ⅱ: Topical Studies in Oceanography, 168: 104645.
[14]	JENSEN T G, WIJESEKERA H W, NYADJRO E S, et al, 2016. Modeling salinity exchanges between the equatorial Indian Ocean and the bay of Bengal[J]. Oceanography, 29(2): 92-101. doi: 10.5670/oceanog
[15]	KURIEN P, IKEDA M, VALSALA V K, 2010. Mesoscale variability along the east coast of India in spring as revealed from satellite data and OGCM simulations[J]. Journal of Oceanography, 66(2): 273-289. doi: 10.1007/s10872-010-0024-x
[16]	LEGECKIS R, 1987. Satellite observations of a western boundary current in the Bay of Bengal[J]. Journal of Geophysical Research: Oceans, 92(C12): 12974-12978.
[17]	MADHUPRATAP M, GAUNS M, RAMAIAH N, et al, 2003. Biogeochemistry of the Bay of Bengal: Physical, chemical and primary productivity characteristics of the central and western Bay of Bengal during summer monsoon 2001[J]. Deep Sea Research Part Ⅱ: Topical Studies in Oceanography, 50(5): 881-896.
[18]	MARIANO A J, RYAN E H, PERKINS B D, et al, 1995. The Mariano global surface velocity analysis 1.0[R]. USCG report CG-D-34-95, Office of Engineering, Logistics, and Development, US Coast Guard.
[19]	MCCREARY J P, KUNDU P K, MOLINARI R L, 1993. A numerical investigation of dynamics, thermodynamics and mixed-layer processes in the Indian Ocean[J]. Progress in Oceanography, 31(3): 181-244. doi: 10.1016/0079-6611(93)90002-U
[20]	MCCREARY J P, HAN W, SHANKAR D, et al, 1996. Dynamics of the East India Coastal Current: 2. Numerical solutions[J]. Journal of Geophysical Research: Oceans, 101(C6): 13993-14010.
[21]	MCCREARY J P, MURTUGUDDE R, VIALARD J, et al, 2009. Biophysical processes in the Indian Ocean[M]// WIGGERTJ D, HOODR R, NAQVIS W A, et al. Indian Ocean biogeochemical processes and ecological variability, Volume 185. Washington, DC: American Geophysical Union: 9-32.
[22]	MUKHERJEE A, SHANKAR D, FERNANDO V, et al, 2014. Observed seasonal and intraseasonal variability of the East India Coastal Current on the continental slope[J]. Journal of Earth System Science, 123(6): 1197-1232. doi: 10.1007/s12040-014-0471-7
[23]	MUKHERJEE A, SHANKAR D, CHATTERJEE A, et al, 2018. Numerical simulation of the observed near-surface East India Coastal Current on the continental slope[J]. Climate Dynamics, 50(11): 3949-3980. doi: 10.1007/s00382-017-3856-x
[24]	PANT V, GIRISHKUMAR M S, BHASKAR T V S U, et al, 2015. Observed interannual variability of near-surface salinity in the Bay of Bengal[J]. Journal of Geophysical Research: Oceans, 120(5): 3315-3329. doi: 10.1002/2014JC010340
[25]	POTEMRA J T, LUTHER M E, O'BRIEN J J, 1991. The seasonal circulation of the upper ocean in the Bay of Bengal[J]. Journal of Geophysical Research: Oceans, 96(C7): 12667-12683.
[26]	RAO R R, KUMAR M S G, RAVICHANDRAN M, et al, 2010. Interannual variability of Kelvin wave propagation in the wave guides of the equatorial Indian Ocean, the coastal Bay of Bengal and the southeastern Arabian Sea during 1993-2006[J]. Deep Sea Research Part I: Oceanographic Research Papers, 57(1): 1-13. doi: 10.1016/j.dsr.2009.10.008
[27]	SHANKAR D, MCCREARY J P, HAN W, et al, 1996. Dynamics of the East India Coastal Current: 1. Analytic solutions forced by interior Ekman Pumping and local alongshore winds[J]. Journal of Geophysical Research: Oceans, 101(C6): 13975-13991.
[28]	SHANKAR D, VINAYACHANDRAN P N, UNNIKRISHNAN A S, 2002. The monsoon currents in the north Indian Ocean[J]. Progress in Oceanography, 52(1): 63-120. doi: 10.1016/S0079-6611(02)00024-1
[29]	SHENOI S S C, SAJI P K, ALMEIDA A M, 1999. Near-surface circulation and kinetic energy in the tropical Indian Ocean derived from Lagrangian drifters[J]. Journal of Marine Research, 57(6): 885-907. doi: 10.1357/002224099321514088
[30]	SHENOI S S C, SHANKAR D, SHETYE S R, 2002. Differences in heat budgets of the near-surface Arabian Sea and Bay of Bengal: Implications for the summer monsoon[J]. Journal of Geophysical Research: Oceans, 107(C6): 3052.
[31]	SHETYE S R, SHENOI S S C, 1988. Seasonal cycle of surface circulation in the coastal North Indian Ocean[J]. Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences, 97(1): 53-62.
[32]	SHETYE S R, SHENOI S S C, GOUVEIA A D, et al, 1991. Wind-driven coastal upwelling along the western boundary of the Bay of Bengal during the southwest monsoon[J]. Continental Shelf Research, 11(11): 1397-1408. doi: 10.1016/0278-4343(91)90042-5
[33]	SHETYE S R, GOUVEIA A D, SHENOI S S C, et al, 1993. The western boundary current of the seasonal subtropical gyre in the Bay of Bengal[J]. Journal of Geophysical Research: Oceans, 98(C1): 945-954.
[34]	SHETYE S R, GOUVEIA A D, SHANKAR D, et al, 1996. Hydrography and circulation in the western Bay of Bengal during the northeast monsoon[J]. Journal of Geophysical Research: Oceans, 101(C6): 14011-14025.
[35]	SUBRAHMANYAM B, ROBINSON I S, 2000. Sea surface height variability in the Indian Ocean from TOPEX/POSEIDON altimetry and model simulations[J]. Marine Geodesy, 23(3) 167-195. doi: 10.1080/01490410050128609
[36]	VINAYACHANDRAN P N, YAMAGATA T, 1998. Monsoon response of the sea around Sri Lanka: Generation of thermal domes and anticyclonic vortices[J]. Journal of Physical Oceanography, 28(10): 1946-1960. doi: 10.1175/1520-0485(1998)028<1946:MROTSA>2.0.CO;2
[37]	VINAYACHANDRAN P N, MASUMOTO Y, MIKAWA T, et al, 1999. Intrusion of the southwest monsoon current into the Bay of Bengal[J]. Journal of Geophysical Research: Oceans, 104(C5): 11077-11085.
[38]	VINAYACHANDRAN P N, MCCREARY J P, HOOD R R, et al, 2005. A numerical investigation of the phytoplankton bloom in the Bay of Bengal during northeast monsoon[J]. Journal of Geophysical Research: Oceans, 110(C12): C12001.
[39]	VINAYACHANDRAN P N, NANJUNDIAH R S, 2009. Indian Ocean sea surface salinity variations in a coupled model[J]. Climate Dynamics, 33(2): 245-263. doi: 10.1007/s00382-008-0511-6
[40]	YU LISAN, O'BRIEN J J, YANG JIAYAN, 1991. On the remote forcing of the circulation in the Bay of Bengal[J]. Journal of Geophysical Research: Oceans, 96(C11): 20449-20454.

东印度沿岸流的季节变化及其热盐输运

Seasonal variation of East India Coastal Current and its transports of heat and salt

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