DOI: 10.1002/2015GL064089
论文题名: Coherent water transport across the South Atlantic
作者: Wang Y. ; Olascoaga M.J. ; Beron-Vera F.J.
刊名: Geophysical Research Letters
ISSN: 0094-9111
EISSN: 1944-8842
出版年: 2015
卷: 42, 期: 10 起始页码: 4072
结束页码: 4079
语种: 英语
英文关键词: Agulhas rings
; coherent material eddies
; transport
Scopus关键词: Dynamical systems
; Nonlinear dynamical systems
; Coherent material eddies
; Geostrophic currents
; Material coherence
; North brazil currents
; Satellite altimetry
; Subtropical Gyre
; Transport
; Water transport
; Ocean currents
; geostrophic flow
; gyre
; mesoscale eddy
; oceanic current
; satellite altimetry
; subtropical convergence
; water flow
; Agulhas Ridge
; Atlantic Ocean
; Brazil Current
; Indian Ocean
; Walvis Ridge
英文摘要: The role of mesoscale eddies in transporting Agulhas leakage is investigated using a recent technique from nonlinear dynamical systems theory applied on geostrophic currents inferred from the over two decade long satellite altimetry record. Eddies are found to acquire material coherence away from the Agulhas retroflection, near the Walvis Ridge in the South Atlantic. Yearly, one to four coherent material eddies are detected with diameters ranging from 40 to 280 km. A total of 23 eddy cores of about 50 km in diameter and with at least 30% of their contents traceable into the Indian Ocean were found to travel across the subtropical gyre with minor filamentation. Only one eddy core was found to pour its contents on the North Brazil Current. While the ability of eddies to carry Agulhas leakage northwestward across the South Atlantic is supported by our analysis, this is more restricted than suggested by earlier ring transport assessments. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931565959&doi=10.1002%2f2015GL064089&partnerID=40&md5=9942c8ac92760a3af284b1222629ac01
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8727
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Ocean Sciences, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States
Recommended Citation:
Wang Y.,Olascoaga M.J.,Beron-Vera F.J.. Coherent water transport across the South Atlantic[J]. Geophysical Research Letters,2015-01-01,42(10).