Variability of Antarctic Intermediate Water south of Australia and its relationship with frontal waves

CORC > 海洋研究所 > 中国科学院海洋研究所 > 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 LinLin 1,2,3; Yan XiaoMei 1,2,3; Sun Che 1,2,3; Hu DunXin 1,2,3
刊名	SCIENCE CHINA-EARTH SCIENCES
	2016-08-01
卷号	59 期号:8 页码:1674-1682
关键词	Antarctic Intermediate Water (AAIW) Stream-coordinates Frontal wave EOF
英文摘要	A 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.
收录类别	SCI
语种	英语
WOS记录号	WOS:000380680400015
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.qdio.ac.cn/handle/337002/135875]
专题	海洋研究所_海洋环流与波动重点实验室
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.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao 266071, Peoples R China
推荐引用方式 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.