DOI: 10.1002/2015GL064676
论文题名: Tidally driven mixing and dissipation in the stratified boundary layer above steep submarine topography
作者: Winters K.B.
刊名: Geophysical Research Letters
ISSN: 0094-9614
EISSN: 1944-9345
出版年: 2015
卷: 42, 期: 17 起始页码: 7123
结束页码: 7130
语种: 英语
英文关键词: mixing and dissipation
; sloping topography
; stratified boundary layer
; tide-topography interaction
Scopus关键词: Diffusion
; Mixing
; Thermal stratification
; Topography
; Dissipation rates
; Environmental conditions
; High resolution
; Microstructure observation
; Mixing efficiency
; Sloping bottom
; Stratified boundary layers
; Submarine topography
; Boundary layers
; boundary layer
; diffusivity
; dye
; environmental conditions
; mixing
; stratification
; topography
; tracer
; Atlantic Ocean
; Canary Basin
英文摘要: A tidally driven, stratified boundary layer over supercritical topography is simulated numerically. The near-boundary flow is characterized by quasiperiodic, bore-like motions and episodic expulsion events where fluid is ejected into the stratified interior. The character of the bores is compared to the high-resolution ocean mooring data of van Haren (2006). The diffusivity of the flow near the boundary is estimated by means of a synthetic dye tracer experiment. The average dissipation rate within the dye cloud is computed and combined with the diffusivity estimate to yield an overall mixing efficiency of 0.15. Both the estimated diffusivity and dissipation rates are in reasonable agreement with the microstructure observations of Kunze et al. (2012) when scaled to the environmental conditions at the Monterey and Soquel Canyons and to the values estimated by van Haren and Gostiaux (2012) above the sloping bottom of the Great Meteor Seamount in the Canary Basin. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84943311254&doi=10.1002%2f2015GL064676&partnerID=40&md5=66e6e20edf82c1422b0de6785d4f1a50
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9229
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: Scripps Institution of Oceanography, University of California, San Diego, San Diego, CA, United States
Recommended Citation:
Winters K.B.. Tidally driven mixing and dissipation in the stratified boundary layer above steep submarine topography[J]. Geophysical Research Letters,2015-01-01,42(17).