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| Fronts, baroclinic transport, and mesoscale variability of the Antarctic Circumpolar Current in the southeast Indian Ocean | |
Duan Yongliang1,2,3 ; Hou Yijun1,2; Liu Hongwei1,2,3; Hu Po1,2; Hou, YJ (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
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| 2012-11-01 | |
| 发表期刊 | ACTA OCEANOLOGICA SINICA
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| ISSN | 0253-505X |
| 卷号 | 31期号:6页码:1-11 |
| 文章类型 | Article |
| 摘要 | Fronts, baroclinic transport, and mesoscale variability of the Antarctic Circumpolar Current (ACC) along 115A degrees E are examined on the basis of CTD data from two hydrographic cruises occupied in 1995 as a part of the World Ocean Circulation Experiment (WOCE cruise I9S) and in 2004 as a part of CLIVAR/CO2 repeat hydrography program. The integrated baroclinic transport across I9S section is (97.2x10(6)+/- 2.2x10(6)) m(3)/s relative to the deepest common level (DCL). The net transport at the north end of I9S, determined by the south Australian circulation system, is about 16.5x10(6) m(3)/s westward. Relying on a consistent set of water mass criteria and transport maxima, the ACC baroclinic transport, (117x10(6)+/- 6.7x10(6)) m(3)/s to the east, is carried along three fronts: the Subantarctic Front (SAF) at a mean latitude of 44A degrees-49A degrees S carries (50.6x10(6)+/- 13.4x10(6)) m(3)/s; the Polar Front (PF), with the northern branch (PF-N) at 50.5A degrees S and the southern branch (PFS) at 58A degrees S, carries (51.3x10(6)+/- 8.7x10(6)) m(3)/s; finally, the southern ACC front (SACCF) and the southern boundary of the ACC (SB) consist of three cores between 59A degrees S and 65A degrees S that combined carry (15.2x10(6)+/- 1.8x10(6)) m(3)/s. Mesoscale eddy features are identifiable in the CTD sections and tracked in concurrent maps of altimetric sea level anomalies (SLA) between 44A degrees-48A degrees S and 53A degrees-57A degrees S. Because of the remarkable mesoscale eddy features within the SAF observed in both the tracks of the cruises, the eastward transport of the SAF occurs at two latitude bands separating by 1A degrees. Both the CTD and the altimetric data suggest that the mesoscale variability is concentrated around the Antarctic Polar Frontal Zone (APFZ) and causes the ACC fronts to merge, diverge, and to fluctuate in intensity and position along their paths. |
| 关键词 | Antarctic Circumpolar Current Fronts Transport Eddies |
| 学科领域 | Oceanography |
| DOI | 10.1007/s13131-012-0248-2 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000312494000001 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/12150 |
| 专题 | 海洋环流与波动重点实验室 |
| 通讯作者 | Hou, YJ (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China. |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所; 海洋环流与波动重点实验室 |
| 推荐引用方式 GB/T 7714 | Duan Yongliang,Hou Yijun,Liu Hongwei,et al. Fronts, baroclinic transport, and mesoscale variability of the Antarctic Circumpolar Current in the southeast Indian Ocean[J]. ACTA OCEANOLOGICA SINICA,2012,31(6):1-11. |
| APA | Duan Yongliang,Hou Yijun,Liu Hongwei,Hu Po,&Hou, YJ .(2012).Fronts, baroclinic transport, and mesoscale variability of the Antarctic Circumpolar Current in the southeast Indian Ocean.ACTA OCEANOLOGICA SINICA,31(6),1-11. |
| MLA | Duan Yongliang,et al."Fronts, baroclinic transport, and mesoscale variability of the Antarctic Circumpolar Current in the southeast Indian Ocean".ACTA OCEANOLOGICA SINICA 31.6(2012):1-11. |
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