DOI: 10.1002/grl.50533
论文题名: Large-amplitude internal tides, solitary waves, and turbulence in the central Bay of Biscay
作者: Xie X.H. ; Cuypers Y. ; Bouruet-Aubertot P. ; Ferron B. ; Pichon A. ; Lourenço A. ; Cortes N.
刊名: Geophysical Research Letters
ISSN: 0094-8923
EISSN: 1944-8654
出版年: 2013
卷: 40, 期: 11 起始页码: 2748
结束页码: 2754
语种: 英语
英文关键词: Bay of Biscay
; internal tides
; solitary waves
; turbulence
Scopus关键词: Bay of Biscay
; Dissipation rates
; Internal solitary waves
; Internal tides
; Internal waves
; Low-frequency
; Low-frequency modes
; Turbulent mixing
; Solitons
; Stream flow
; Turbulence
; Tides
; amplitude
; dissipation
; internal tide
; internal wave
; microstructure
; mixing
; shear band
; solitary wave
; thermocline
; turbulence
; wave field
; Atlantic Ocean
; Bay of Biscay
英文摘要: Microstructure and fine-scale measurements collected in the central Bay of Biscay during the MOUTON experiment are analyzed to investigate the dynamics of internal waves and associated mixing. Large-amplitude internal tides (ITs) that excite internal solitary waves (ISWs) in the thermocline are observed. ITs are dominated by modes 3 and 4, while ISWs projected on mode 1 that is trapped in the thermocline. Therein, ITs generate a persistent narrow shear band, which is strongly correlated with the enhanced dissipation rate in the thermocline. This strong dissipation rate is further reinforced in the presence of ISWs. Dissipation rates during the period without ISWs largely agree with the MacKinnon-Gregg scaling proposed for internal wavefields dominated by a low-frequency mode, while they show poor agreement with the Gregg-Henyey parameterization valid for internal wavefields close to the Garrett-Munk model. The agreement with the MacKinnon-Gregg scaling is consistent with the fact that turbulent mixing here is driven by the low-frequency internal tidal shear. © 2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879966074&doi=10.1002%2fgrl.50533&partnerID=40&md5=64a4c9a59b5ef3d77774003dd3cac761
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6187
Appears in Collections: 气候减缓与适应
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作者单位: LOCEAN, UMR 7167, Université Pierre et Marie Curie, Paris, France
Recommended Citation:
Xie X.H.,Cuypers Y.,Bouruet-Aubertot P.,et al. Large-amplitude internal tides, solitary waves, and turbulence in the central Bay of Biscay[J]. Geophysical Research Letters,2013-01-01,40(11).