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The adjustment mechanism of the surface salinity in the Indian Ocean by oceanic advection
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Jindian Xu1, 2, Chunsheng Jing1, 2, *, Shangzhan Cai1, 2, Xinyu Lin1, 2, Lu Gao3
Haiyang Xuebao | 2022, 44(5) : 80 - 91
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Haiyang Xuebao | 2022, 44(5): 80-91
• Article •
The adjustment mechanism of the surface salinity in the Indian Ocean by oceanic advection
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Jindian Xu1, 2, Chunsheng Jing1, 2, *, Shangzhan Cai1, 2, Xinyu Lin1, 2, Lu Gao3
Affiliations
  • 1. Ocean Dynamics Laboratory, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
  • 2. Fujian Provincial Key Laboratory of Marine Physical and Geological Processes, Xiamen 361005, China
  • 3. Haikou Marine Environment Monitoring Station, State Oceanic Administration, Haikou 570311, China
Published: 2022-05-01 doi: 10.12284/hyxb2022031
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In this study, Argo surface salinity, OSCAR current and other data are used to explore the influence of oceanic advection transport on the surface salinity in the Tropical Indian Ocean based on the advection term of the salinity budget equation. The adjustment mechanism of the spatial structure of surface salinity by oceanic advection is revealed by freshwater transport calculation along 6 key sections. The results show that the oceanic advection which transports the high-salinity water in the Equatorial Western Indian Ocean (EWIO) and the Arabian Sea (AS) to the Equatorial Eastern Indian Ocean (EEIO), the Bay of Bengal (BOB) and the Andaman Sea, and also transports the low-salinity water in the EEIO, the BOB and the Andaman Sea to the EWIO, the AS and the Equatorial Southern Indian Ocean, plays a role in adjusting the basic balance of salinity in the Indian Ocean. The analysis of freshwater transport along sections shows that the inconsistency between the center of high precipitation and low salinity in the western sea area of Sumatra, and the inconsistency between the center of high evaporation and high salinity in the western sea area of Australia, are both caused by oceanic advection. In summer, the high-salinity water in the EWIO and the AS transported by the southwest monsoon forced circulation into the BOB, is the main reason for the high surface salinity in the BOB.

freshwater transport  /  advection  /  adjustment mechanism  /  surface salinity  /  Indian Ocean
Jindian Xu, Chunsheng Jing, Shangzhan Cai, Xinyu Lin, Lu Gao. The adjustment mechanism of the surface salinity in the Indian Ocean by oceanic advection[J]. Haiyang Xuebao, 2022 , 44 (5) : 80 -91 . DOI: 10.12284/hyxb2022031
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Year 2022 volume 44 Issue 5
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Article Info
doi: 10.12284/hyxb2022031
  • Receive Date：2021-04-25
  • Online Date：2026-02-01
  • Published：2022-05-01
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History
  • Received：2021-04-25
  • Revised：2021-06-22
Funding
Affiliations
    1. Ocean Dynamics Laboratory, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
    2. Fujian Provincial Key Laboratory of Marine Physical and Geological Processes, Xiamen 361005, China
    3. Haikou Marine Environment Monitoring Station, State Oceanic Administration, Haikou 570311, China
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表12种不同金属材料的力学参数
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Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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