DOI: 10.1002/grl.50584
论文题名: Field measurements and scaling of ocean surface wave-breaking statistics
作者: Sutherland P. ; Melville W.K.
刊名: Geophysical Research Letters
ISSN: 0094-8884
EISSN: 1944-8615
出版年: 2013
卷: 40, 期: 12 起始页码: 3074
结束页码: 3079
语种: 英语
英文关键词: breaking waves
; dissipation
; infrared
; stereo
; upper ocean turbulence
; whitecap
Scopus关键词: Breaking waves
; Field measurement
; Length distributions
; Reconstructed surfaces
; stereo
; Upper ocean
; Wave energy dissipation
; whitecap
; C (programming language)
; Energy dissipation
; Image texture
; Infrared devices
; Infrared imaging
; Infrared radiation
; Surface waters
; Velocity
; Wave energy conversion
; Water waves
; algorithm
; energy dissipation
; infrared imagery
; ocean wave
; reconstruction
; stereo image
; surf zone
; surface wave
; turbulence
; upper ocean
; videography
; wave breaking
; wave energy
; wave velocity
英文摘要: Deep-water breaking waves provide a mechanism for mass, momentum, and energy transfer between the atmosphere and ocean. Microscale breaking is particularly important, but notoriously difficult to measure in the field. In this paper, measurements from a new technique, using a stereo pair of long-wave infrared cameras to reconstruct the sea surface shape and velocity field, are presented. Breakers are detected using an image texture-based algorithm and then tracked on the reconstructed surface. These waves range from large air-entraining breakers to microbreakers that are undetectable by traditional visible video-based techniques. This allows measurements of breaker length distributions, Î(c), that extend to velocities near the gravity-capillary transition. These distributions are compared with measurements from the literature and from visible video imagery. A nondimensional scaling is proposed which collapses Î(c). Finally, estimates of energy dissipation and stress based on Î(c) are found to agree well with wave energy dissipation and wind stress models. Key Points New technique measuring wave-breaking at sea using stereo IR image texture Crest length distribution measured for non-air-entraining microscale breakers Successful nondimensional scaling of the breaker crest length distribution ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880522007&doi=10.1002%2fgrl.50584&partnerID=40&md5=8ec203f3f42cee7991818f6f64176ff1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6148
Appears in Collections: 气候减缓与适应
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作者单位: Scripps Institution of Oceanography, University of California, San Diego, CA 92093-0213, United States
Recommended Citation:
Sutherland P.,Melville W.K.. Field measurements and scaling of ocean surface wave-breaking statistics[J]. Geophysical Research Letters,2013-01-01,40(12).