首页|Hydrography and Circulation in the Eastern Tropical Indian Ocean during April-May 2011

Hydrography and Circulation in the Eastern Tropical Indian Ocean during April-May 2011

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The distribution of hydrography and circula- tion in the eastern tropical Indian Ocean （ETIO） during April-May 2011 were analyzed using cruise observations, satellite observations, and historic hydrographic data. It was observed that warm water （〉28℃） occupies the up- per 50-m layer in the ETIO. Low-salinity surface water was observed at the mouth of the Bay of Bengal （BOB）, which further extends to the Arabian Sea and off Sumatra via the Sri Lanka coast and the eastern bay mouth, Ara- bian Sea high-salinity water （ASHSW） is carried eastward along the equator to around 90~E by the equatorial un- dercurrent （EUC）. It also runs south of Sri Lanka （north to 3~N） and in the western bay mouth （west to 87~E） but is much shallower than its counterpart at the equator. It is suggested to be the residual of the ASHSW, which intrudes into the BOB during the preceding southwest monsoon. Our results also show that, in the south of Sri Lanka, just below this subsurface high-salinity water, very-low-salinity water （about 34.8） occurs at depths of 100-200 m. Further analysis suggests that this low- salinity water comes from the BOB.

eastern tropical Indian Oceanhydrographycirculation

XUAN Li-Li、QIU Yun、XU Jin-Dian、HE Yun-Kai

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Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China

State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, The Chinese Academy of Sciences,Guangzhou 510301, China

水文数据 东印度洋 环流 热带 斯里兰卡 卫星观测 阿拉伯海 低矿化度

Ocean Public Welfare Scientific Research Project, State Oceanic AdministrationComprehensive Fields Experi- ments of Oceanology in Indian Ocean in 2011国家自然科学基金国家重点基础研究发展规划(973计划)国家重点基础研究发展规划(973计划)

201005033-441049903408060142009CB4212052011 CB403502

2012

大气和海洋科学快报(英文版)
中国科学院大气物理研究所

大气和海洋科学快报(英文版)

CSCD
影响因子：0.465
ISSN：1674-2834
年,卷(期)：2012.5(4)
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