DOI: 10.1002/2014GL062274
论文题名: Wave breaking turbulence at the offshore front of the Columbia River Plume
作者: Thomson J. ; Horner-Devine A.R. ; Zippel S. ; Rusch C. ; Geyer W.
刊名: Geophysical Research Letters
ISSN: 0094-9481
EISSN: 1944-9212
出版年: 2014
卷: 41, 期: 24 起始页码: 8987
结束页码: 8993
语种: 英语
英文关键词: mixing
; river plume
; turbulence
; wave breaking
; wave-current interaction
Scopus关键词: Liquid waves
; Mixing
; Oceanography
; Rivers
; Wave energy conversion
; Background conditions
; Columbia river plume
; Lateral gradient
; River discharge
; River plume
; Wave current interaction
; Wave energy flux
; Wavebreaking
; Turbulence
; energy flux
; river plume
; river water
; shear flow
; subsurface flow
; turbulence
; turbulent mixing
; wave breaking
; wave-current interaction
; Columbia [Missouri]
; Missouri
; United States
英文摘要: Observations at the Columbia River plume show that wave breaking is an important source of turbulence at the offshore front, which may contribute to plume mixing. The lateral gradient of current associated with the plume front is sufficient to block (and break) shorter waves. The intense whitecapping that then occurs at the front is a significant source of turbulence, which diffuses downward from the surface according to a scaling determined by the wave height and the gradient of wave energy flux. This process is distinct from the shear-driven mixing that occurs at the interface of river water and ocean water. Observations with and without short waves are examined, especially in two cases in which the background conditions (i.e., tidal flows and river discharge) are otherwise identical. Key PointsStrong currents at fronts cause wave breakingWave breaking generates strong turbulenceSurface turbulence (from wave breaking) can affect subsurface mixing ©2014. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921709530&doi=10.1002%2f2014GL062274&partnerID=40&md5=51490af28f5b2bebfeac90b1d9327e7e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6745
Appears in Collections: 气候减缓与适应
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作者单位: University of Washington, Seattle, WA, United States
Recommended Citation:
Thomson J.,Horner-Devine A.R.,Zippel S.,et al. Wave breaking turbulence at the offshore front of the Columbia River Plume[J]. Geophysical Research Letters,2014-01-01,41(24).