孟加拉湾与赤道东印度洋水交换的季节变化特征*

doi:10.11978/2015012

Abstract

Abstract: Based on the simple ocean data assimilation (SODA) reanalysis and satellite observations, we analyzed the seasonal variation of the meridional salt exchange between the Bay of Bengal (BOB) and the equatorial eastern Indian Ocean (EEIO). We estimated the annual-mean freshwater transport along the 6°N section at the mouth of the BOB. Results showed that the salt exchange between BOB and EEIO is dominated by the currents, and its direction is almost opposite between the east and west sides at the bay mouth. During the southwest monsoon (northeast monsoon), the salt flux is northward (southward) in the west while it is southward (northward) in the east of the bay mouth. Furthermore, the freshwater flows out of (into) the bay during April to October (November to the following March). The freshwater transport from the BOB to the EEIO happens in the whole depth. The annual-mean freshwater transport is 1.0×10⁵m³·s^-1.

Key words: Equatorial eastern Indian Ocean, Bay of Bengal, water exchange, simple ocean data assimilation

CLC Number:

P731.26

XUAN Li-li, QIU Yun, XU Jin-dian, Li Zi-qiang. Seasonal variation of the water exchange between the Bay of Bengal and the equatorial eastern Indian Ocean[J].Journal of Tropical Oceanography, 2015, 34(6): 26-34.

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Seasonal variation of the water exchange between the Bay of Bengal and the equatorial eastern Indian Ocean

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