DOI: 10.1002/2015GL065043
论文题名: Vertical kinetic energy and turbulent dissipation in the ocean
作者: Thurnherr A.M. ; Kunze E. ; Toole J.M. ; St. Laurent L. ; Richards K.J. ; Ruiz-Angulo A.
刊名: Geophysical Research Letters
ISSN: 0094-9203
EISSN: 1944-8934
出版年: 2015
卷: 42, 期: 18 起始页码: 7639
结束页码: 7647
语种: 英语
英文关键词: finestructure parameterization
; internal waves
; mixing
; turbulence
; vertical kinetic energy
Scopus关键词: Kinetic energy
; Mixing
; Oceanography
; Turbulence
; Dissipation rates
; Dynamic regimes
; Empirical relationships
; Fine structures
; Internal waves
; Single parameter scaling
; Turbulent dissipation
; Vertical velocity
; Kinetics
; data set
; energy dissipation
; internal wave
; kinetic energy
; ocean wave
; parameterization
; turbulence
英文摘要: Oceanic internal waves are closely linked to turbulence. Here a relationship between vertical wave number (kz) spectra of fine-scale vertical kinetic energy (VKE) and turbulent dissipation ε is presented using more than 250 joint profiles from five diverse dynamic regimes, spanning latitudes between the equator and 60°. In the majority of the spectra VKE varies as kz-2. Scaling VKE with ε collapses the off-equatorial spectra to within 2 but underestimates the equatorial spectrum. The simple empirical relationship between VKE and ε fits the data better than a common shear-and-strain fine-scale parameterization, which significantly underestimates ε in the two data sets that are least consistent with the Garrett-Munk (GM) model. The new relationship between fine-scale VKE and dissipation rate can be interpreted as an alternative, single-parameter scaling for turbulent dissipation in terms of fine-scale internal wave vertical velocity that requires no reference to the GM model spectrum. © 2015 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945217287&doi=10.1002%2f2015GL065043&partnerID=40&md5=7a1431e97ff49b3dbbab8ce9165ecad7
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8819
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: Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States
Recommended Citation:
Thurnherr A.M.,Kunze E.,Toole J.M.,et al. Vertical kinetic energy and turbulent dissipation in the ocean[J]. Geophysical Research Letters,2015-01-01,42(18).