DOI: 10.1002/2015GL063628
论文题名: Relating wave attenuation to pancake ice thickness, using field measurements and model results
作者: Doble M.J. ; De Carolis G. ; Meylan M.H. ; Bidlot J.-R. ; Wadhams P.
刊名: Geophysical Research Letters
ISSN: 0094-9552
EISSN: 1944-9283
出版年: 2015
卷: 42, 期: 11 起始页码: 4473
结束页码: 4481
语种: 英语
英文关键词: pancake ice
; sea ice
; viscous model
; wave attenuation
Scopus关键词: Boundary layers
; Sea ice
; Field measurement
; Low pressure systems
; Marginal Ice Zone
; Operational model
; Orders of magnitude
; Simple expression
; Viscous models
; Wave attenuation
; Ice
英文摘要: Wave attenuation coefficients (α, m-1) were calculated from in situ data transmitted by custom wave buoys deployed into the advancing pancake ice region of the Weddell Sea. Data cover a 12 day period as the buoy array was first compressed and then dilated under the influence of a passing low-pressure system. Attenuation was found to vary over more than 2 orders of magnitude and to be far higher than that observed in broken-floe marginal ice zones. A clear linear relation between α and ice thickness was demonstrated, using ice thickness from a novel dynamic/thermodynamic model. A simple expression for α in terms of wave period and ice thickness was derived, for application in research and operational models. The variation of α was further investigated with a two-layer viscous model, and a linear relation was found between eddy viscosity in the sub-ice boundary layer and ice thickness. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84934436173&doi=10.1002%2f2015GL063628&partnerID=40&md5=419381e6f78be171a34d09d8bdbe3ab8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9167
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: Observatoire Océanologique, UPMC Univ Paris 06, UMR 7093, Villefranche-sur-mer, France
Recommended Citation:
Doble M.J.,De Carolis G.,Meylan M.H.,et al. Relating wave attenuation to pancake ice thickness, using field measurements and model results[J]. Geophysical Research Letters,2015-01-01,42(11).