DOI: 10.1002/2016GL068171
论文题名: Decoupling of mass flux and turbulent wind fluctuations in drifting snow
作者: Paterna E. ; Crivelli P. ; Lehning M.
刊名: Geophysical Research Letters
ISSN: 0094-9056
EISSN: 1944-8787
出版年: 2016
卷: 43, 期: 9 起始页码: 4441
结束页码: 4447
语种: 英语
英文关键词: aeolian transport
; drifting snow
; wavelet analysis
; wind tunnel
Scopus关键词: Atmospheric boundary layer
; Atmospheric movements
; Atmospheric thermodynamics
; Boundary layers
; Sediment transport
; Wavelet analysis
; Wind tunnels
; Aeolian transport
; Drifting snow
; Mountainous regions
; Snow transport
; Turbulent eddy
; Turbulent wind
; Wind strength
; Wind tunnel measurements
; Snow
; air-snow interaction
; blowing snow
; boundary layer
; eolian deposit
; mass balance
; sediment transport
; snow cover
; split window
; turbulent flow
; wavelet analysis
; wind field
; wind tunnel
英文摘要: The wind-driven redistribution of snow has a significant impact on the climate and mass balance of polar and mountainous regions. Locally, it shapes the snow surface, producing dunes and sastrugi. Sediment transport has been mainly represented as a function of the wind strength, and the two processes assumed to be stationary and in equilibrium. The wind flow in the atmospheric boundary layer is unsteady and turbulent, and drifting snow may never reach equilibrium. Our question is therefore: what role do turbulent eddies play in initiating and maintaining drifting snow? To investigate the interaction between drifting snow and turbulence experimentally, we conducted several wind tunnel measurements of drifting snow over naturally deposited snow covers. We observed a coupling between snow transport and turbulent flow only in a weak saltation regime. In stronger regimes it self-organizes developing its own length scales and efficiently decoupling from the wind forcing. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84992311433&doi=10.1002%2f2016GL068171&partnerID=40&md5=a038fe1d23fb334d8797c8c467ce7dda
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10019
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: WSL, Institute for Snow and Avalanche Research, SLF, Davos, Switzerland
Recommended Citation:
Paterna E.,Crivelli P.,Lehning M.. Decoupling of mass flux and turbulent wind fluctuations in drifting snow[J]. Geophysical Research Letters,2016-01-01,43(9).