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DOI | 10.1002/2016GL072452 |
Efficiency of turbulent mixing in the abyssal ocean circulation | |
Mashayek, A.1; Salehipour, H.2; Bouffard, D.3; Caulfield, C. P.4,5; Ferrari, R.1; Nikurashin, M.6,7; Peltier, W. R.2; Smyth, W. D.8 | |
2017-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada; Switzerland; England; Australia |
英文摘要 | Turbulent mixing produced by breaking of internal waves plays an important role in setting the patterns of downwelling and upwelling of deep dense waters and thereby helps sustain the global deep ocean overturning circulation. A key parameter used to characterize turbulent mixing is its efficiency, defined here as the fraction of the energy available to turbulence that is invested in mixing. Efficiency is conventionally approximated by a constant value near one sixth. Here we show that efficiency varies significantly in the abyssal ocean and can be as large as approximately one third in density stratified regions near topographic features. Our results indicate that variations in efficiency exert a first-order control over the rate of overturning of the lower branch of the meridional overturning circulation. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405854200049 |
WOS关键词 | STRATIFIED SHEAR FLOWS ; HIGH REYNOLDS-NUMBER ; GLOBAL OCEAN ; DEEP-OCEAN ; INTERNAL WAVES ; OVERTURNING CIRCULATION ; DIAPYCNAL DIFFUSIVITY ; DISSIPATION RATE ; SOUTHERN-OCEAN ; PRANDTL NUMBER |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28082 |
专题 | 气候变化 |
作者单位 | 1.MIT, Dept Earth Atmosphere & Planetary Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA; 2.Univ Toronto, Dept Phys, Toronto, ON, Canada; 3.Eawag Swiss Fed Inst Aquat Sci & Technol, Surface Waters Res & Management, Kastanienbaum, Switzerland; 4.Univ Cambridge, BP Inst, Cambridge, England; 5.Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge, England; 6.Arc Ctr Excellence Climate Sci, Sydney, NSW, Australia; 7.Univ Tasmania, Hobart, Tas, Australia; 8.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA |
推荐引用方式 GB/T 7714 | Mashayek, A.,Salehipour, H.,Bouffard, D.,et al. Efficiency of turbulent mixing in the abyssal ocean circulation[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(12). |
APA | Mashayek, A..,Salehipour, H..,Bouffard, D..,Caulfield, C. P..,Ferrari, R..,...&Smyth, W. D..(2017).Efficiency of turbulent mixing in the abyssal ocean circulation.GEOPHYSICAL RESEARCH LETTERS,44(12). |
MLA | Mashayek, A.,et al."Efficiency of turbulent mixing in the abyssal ocean circulation".GEOPHYSICAL RESEARCH LETTERS 44.12(2017). |
条目包含的文件 | 条目无相关文件。 |
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