DOI: 10.1002/grl.50542
论文题名: Overturning circulation driven by breaking internal waves in the deep ocean
作者: Nikurashin M. ; Ferrari R.
刊名: Geophysical Research Letters
ISSN: 0094-8861
EISSN: 1944-8592
出版年: 2013
卷: 40, 期: 12 起始页码: 3133
结束页码: 3137
语种: 英语
英文关键词: internal tides
; internal waves
; lee waves
; overturning circulation
; turbulent mixing
; water-mass transformation
Scopus关键词: Internal tides
; Internal waves
; Lee waves
; Overturning circulation
; Turbulent mixing
; water-mass transformation
; Energy conversion
; Shock tubes
; Tides
; Turbulent flow
; Uncertainty analysis
; Mixing
; abyssal circulation
; climate modeling
; deep sea
; geostrophic flow
; internal tide
; internal wave
; lee wave
; overturn
; parameterization
; tidal cycle
; turbulent mixing
; water mass
; Southern Ocean
英文摘要: A global estimate of the water-mass transformation by internal wave-driven mixing in the deep ocean is presented. The estimate is based on the energy conversion from tidal and geostrophic motions into internal waves combined with a turbulent mixing parameterization. We show that internal wave-driven mixing in the deep ocean can sustain 20-30 Sv of water-mass transformation. One third or more of this transformation is attributed to lee waves generated by geostrophic motions flowing over rough topography, primarily in the Southern Ocean. While these results are uncertain due to many assumptions, poorly constrained parameters and data noise that enter in the calculation, the result that lee wave-driven mixing plays an important role in the abyssal ocean circulation is likely robust. The implication is that lee wave-driven mixing should be represented in ocean and climate models, but currently it is not. Key Points Internal wave driven mixing sustains 20-30Sv of water-mass transformation Internal wave driven mixing impacts primarily the abyssal cell (AABW) of the MOC One third of this transformation is attributed to lee waves ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880532088&doi=10.1002%2fgrl.50542&partnerID=40&md5=dbbedba985c93bb29369b95eda2ea975
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6125
Appears in Collections: 气候减缓与适应
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作者单位: Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia
Recommended Citation:
Nikurashin M.,Ferrari R.. Overturning circulation driven by breaking internal waves in the deep ocean[J]. Geophysical Research Letters,2013-01-01,40(12).