DOI: 10.1002/2013GL057797
论文题名: Tasman Leakage of intermediate waters as inferred from Argo floats
作者: Rosell-Fieschi M. ; Rintoul S.R. ; Gourrion J. ; Pelegrí J.L.
刊名: Geophysical Research Letters
ISSN: 0094-8440
EISSN: 1944-8171
出版年: 2013
卷: 40, 期: 20 起始页码: 5456
结束页码: 5460
语种: 英语
英文关键词: Antarctic Intermediate Water
; Argo program
; East Australian Current
; interbasin exchange
; Southern Hemisphere supergyre
; Tasman Leakage
Scopus关键词: Antarctic circumpolar current
; Antarctic intermediate waters
; Argo program
; Current velocity
; Intermediate level
; Intermediate waters
; Southern Hemisphere
; Velocity vectors
; Velocity
; Ocean currents
; Antarctic Intermediate Water
; Argo
; current velocity
; Eulerian analysis
; gyre
; leakage
; oceanic current
; sea surface
; East Australian Current
; Great Australian Bight
; Indian Ocean
; Pacific Ocean
英文摘要: We use Argo float trajectories to infer ocean current velocity at the sea surface and 1000 dbar near Australia. The East Australian Current flows southward along the east coast of Australia at both surface and intermediate levels, but only the intermediate waters leak round the southern tip of Tasmania and cross the Great Australian Bight. We calculate the transport of Antarctic Intermediate Water (AAIW) between the southern Australian coast and the Antarctic Circumpolar Current (ACC) as the velocity at 1000 dbar times the layer thickness. Between March 2006 and December 2012, the Eulerian AAIW transport through 147°E ranges between 0 and 12.0 sverdrup (Sv). The mean Tasman Leakage of intermediate waters from the Pacific Ocean into the Indian Ocean, obtained using all Argo data until March 2013, is 3.8 ± 1.3 Sv. The mean intermediate water transport into the Indian Ocean through 115°E increases to 5.2 ± 1.8 Sv due to contributions from the westward recirculation of ACC waters. Keypoints An estimate of the Tasman Leakage, with error bars, is obtained A description of mean and seasonal velocity fields near Australia is provided Argo float data are used to calculate velocity vectors and water transports ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885966875&doi=10.1002%2f2013GL057797&partnerID=40&md5=f08985d298d13ac0f2ef12b2a6685226
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5704
Appears in Collections: 气候减缓与适应
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作者单位: Institut de Ciències Del Mar, CSIC, Barcelona ES-08003, Spain
Recommended Citation:
Rosell-Fieschi M.,Rintoul S.R.,Gourrion J.,et al. Tasman Leakage of intermediate waters as inferred from Argo floats[J]. Geophysical Research Letters,2013-01-01,40(20).