| 环南澳大利亚太平洋-印度洋海洋间南极中层水环流 |
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| 引用本文： | 姚文峻,史久新.环南澳大利亚太平洋-印度洋海洋间南极中层水环流[J].海洋学报(英文版),2017,36(7):4-14. |
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| 作者姓名： | 姚文峻 史久新 |
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| 作者单位： | 中国海洋大学, 教育部物理海洋重点实验室, 青岛, 266100,中国海洋大学, 教育部物理海洋重点实验室, 青岛, 266100 |
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| 基金项目： | The Chinese Polar Environment Comprehensive Investigation and Assessment Programs under contract Nos CHINARE-04-04 and CHINARE-04-01. |
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| 摘 要： | On the basis of the salinity distribution of isopycnal(σ_0=27.2 kg/m~3) surface and in salinity minimum, the Antarctic Intermediate Water(AAIW) around South Australia can be classified into five types corresponding to five regions by using in situ CTD observations. Type 1 is the Tasman AAIW, which has consistent hydrographic properties in the South Coral Sea and the North Tasman Sea. Type 2 is the Southern Ocean(SO) AAIW, parallel to and extending from the Subantarctic Front with the freshest and coldest AAIW in the study area. Type 3 is a transition between Type 1 and Type 2. The AAIW transforms from fresh to saline with the latitude declining(equatorward). Type 4, the South Australia AAIW, has relatively uniform AAIW properties due to the semienclosed South Australia Basin. Type 5, the Southeast Indian AAIW, progressively becomes more saline through mixing with the subtropical Indian intermediate water from south to north. In addition to the above hydrographic analysis of AAIW, the newest trajectories of Argo(Array for real-time Geostrophic Oceanography) floats were used to constructed the intermediate(1 000 m water depth) current field, which show the major interocean circulation of AAIW in the study area. Finally, a refined schematic of intermediate circulation shows that several currents get together to complete the connection between the Pacific Ocean and the Indian Ocean. They include the South Equatorial Current and the East Australia Current in the Southwest Pacific Ocean, the Tasman Leakage and the Flinders Current in the South Australia Basin, and the extension of Flinders Current in the southeast Indian Ocean.
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| 关 键 词： | 南极中层水 太平洋-印度洋大洋间环流 南澳大利亚 世界大洋环流实验 地转海洋学实时观测阵 |
| 收稿时间： | 2016/12/31 0:00:00 |
| 修稿时间： | 2017/2/8 0:00:00 |
Pacific-Indian interocean circulation of the Antarctic Intermediate Water around South Australia |
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| YAO Wenjun and SHI Jiuxin.Pacific-Indian interocean circulation of the Antarctic Intermediate Water around South Australia[J].Acta Oceanologica Sinica,2017,36(7):4-14. |
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| Authors: | YAO Wenjun and SHI Jiuxin |
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| Institution: | Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao 266100, China |
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| Abstract: | On the basis of the salinity distribution of isopycnal (σ0=27.2 kg/m3) surface and in salinity minimum, the Antarctic Intermediate Water (AAIW) around South Australia can be classified into five types corresponding to five regions by using in situ CTD observations. Type 1 is the Tasman AAIW, which has consistent hydrographic properties in the South Coral Sea and the North Tasman Sea. Type 2 is the Southern Ocean (SO) AAIW, parallel to and extending from the Subantarctic Front with the freshest and coldest AAIW in the study area. Type 3 is a transition between Type 1 and Type 2. The AAIW transforms from fresh to saline with the latitude declining (equatorward). Type 4, the South Australia AAIW, has relatively uniform AAIW properties due to the semi-enclosed South Australia Basin. Type 5, the Southeast Indian AAIW, progressively becomes more saline through mixing with the subtropical Indian intermediate water from south to north. In addition to the above hydrographic analysis of AAIW, the newest trajectories of Argo (Array for real-time Geostrophic Oceanography) floats were used to constructed the intermediate (1 000 m water depth) current field, which show the major interocean circulation of AAIW in the study area. Finally, a refined schematic of intermediate circulation shows that several currents get together to complete the connection between the Pacific Ocean and the Indian Ocean. They include the South Equatorial Current and the East Australia Current in the Southwest Pacific Ocean, the Tasman Leakage and the Flinders Current in the South Australia Basin, and the extension of Flinders Current in the southeast Indian Ocean. |
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| Keywords: | Antarctic Intermediate Water Pacific-Indian interocean circulation South Australia World Ocean Circulation Experiment Argo |
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