| DOI: | 10.1002/2013GL059070
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| 论文题名: | Breaking internal lee waves at Kaena Ridge, Hawaii |
| 作者: | Alford M.H.; Klymak J.M.; Carter G.S.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10399
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| EISSN: | 1944-10130
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| 出版年: | 2014
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| 卷: | 41, 期:3 | | 起始页码: | 906
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| 结束页码: | 912
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| 语种: | 英语
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| 英文关键词: | hydraulics
; internal waves
; mixing
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| Scopus关键词: | 3-D numerical modeling
; Dissipation rates
; Internal waves
; Orders of magnitude
; Oscillatory flows
; Spatial structure
; Temporal evolution
; Time evolutions
; Hydraulics
; Mixing
; Numerical models
; Oceanography
; Turbulence
; bathymetry
; deep sea
; deep water
; dissipation
; hydraulic conductivity
; instrumentation
; internal wave
; isopycnal layer
; lee wave
; magnitude
; numerical model
; oscillation
; seafloor
; shallow water
; turbulence
; Kaena Ridge
; Pacific Ocean
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| 英文摘要: | Shallow water oscillatory flows and deep ocean steady flows have both been observed to give rise to breaking internal lee waves downstream of steep seafloor obstacles. A recent theory also predicts the existence of high-mode oscillatory internal lee waves in deep water, but they have not previously been directly observed. Here we present repeated spatial transects of velocity, isopycnal displacement, and dissipation rate measured with towed instruments on the south flank of a supercritical ridge in Hawaii known as Kaena Ridge and compare them with predictions from a 3-D numerical model with realistic tidal forcing, bathymetry, and stratification. The measured and modeled flow and turbulence agree well in their spatial structure, time dependence, and magnitude, confirming the existence and predicted nature of high-mode internal lee waves. Turbulence estimated from Thorpe scales increases 2 orders of magnitude following downslope tidal flow, when the internal lee wave begins to propagate upslope and breaks. Key Points We observe the spatial structure and time evolution of internal lee waves A numerical model accurately predicts their structure and temporal evolution Turbulence increases 2 orders of magnitude when lee waves break ©2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896742336&doi=10.1002%2f2013GL059070&partnerID=40&md5=631d8c8c94adce1d0df316b85db05b2a
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7663
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Applied Physics Laboratory and School of Oceanography, University of Washington, Seattle, WA, United States
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| Recommended Citation: | |
Alford M.H.,Klymak J.M.,Carter G.S.. Breaking internal lee waves at Kaena Ridge, Hawaii[J]. Geophysical Research Letters,2014-01-01,41(3).
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