IOCAS-IR  > 海洋环流与波动重点实验室
Variability of Antarctic Intermediate Water south of Australia and its relationship with frontal waves
Zhang LinLin1,2,3; Yan XiaoMei1,2,3; Sun Che1,2,3; Hu DunXin1,2,3
2016-08-01
Source PublicationSCIENCE CHINA-EARTH SCIENCES
Volume59Issue:8Pages:1674-1682
SubtypeArticle
AbstractA streamfunction EOF method is applied to a time series of hydrographic sections in the Southern Ocean south of Australia to study water mass variations. Results show that there are large thermohaline variations north of the Subantarctic Front ( SAF) at 300-1500 dbar level, indicating upwelling and downwelling of the Antarctic Intermediate Water ( AAIW) along isopycnal surfaces. Based on the latest altimeter product, Absolute Dynamic Topography, a mechanism due to frontal wave propagation is proposed to explain this phenomenon, and an index for frontal waves is defined. When the frontal wave is in positive ( negative) phase, the SAF flows northeastward ( southeastward) with the fresh AAIW downwelling ( upwelling). Such mesoscale processes greatly enhance cross-frontal exchanges of water masses. Spectral analysis shows that frontal waves in the Southern Ocean south of Australia are dominated by a period of about 130 days with a phase speed of 4 cm/s and a wavelength of 450 km.
KeywordAntarctic Intermediate Water (Aaiw) Stream-coordinates Frontal Wave Eof
DOI10.1007/s11430-015-0179-5
Indexed BySCI
Language英语
WOS IDWOS:000380680400015
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/135875
Collection海洋环流与波动重点实验室
Affiliation1.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.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao 266071, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang LinLin,Yan XiaoMei,Sun Che,et al. Variability of Antarctic Intermediate Water south of Australia and its relationship with frontal waves[J]. SCIENCE CHINA-EARTH SCIENCES,2016,59(8):1674-1682.
APA Zhang LinLin,Yan XiaoMei,Sun Che,&Hu DunXin.(2016).Variability of Antarctic Intermediate Water south of Australia and its relationship with frontal waves.SCIENCE CHINA-EARTH SCIENCES,59(8),1674-1682.
MLA Zhang LinLin,et al."Variability of Antarctic Intermediate Water south of Australia and its relationship with frontal waves".SCIENCE CHINA-EARTH SCIENCES 59.8(2016):1674-1682.
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