globalchange  > 气候减缓与适应
DOI: 10.1029/2018JC013865
Scopus记录号: 2-s2.0-85052626050
论文题名:
On the Ocean Wave Attenuation Rate in Grease-Pancake Ice, a Comparison of Viscous Layer Propagation Models With Field Data
作者: De Santi F.; De Carolis G.; Olla P.; Doble M.; Cheng S.; Shen H.H.; Wadhams P.; Thomson J.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期:8
起始页码: 5933
结束页码: 5948
语种: 英语
英文关键词: gravity waves ; pancake ice ; viscous layer model ; wave's attenuation buoy data
Scopus关键词: Olla
英文摘要: The ability of viscous layer models to describe the attenuation of waves propagating in grease-pancake ice covered ocean is investigated. In particular, the Keller's model (Keller,; https://doi.org/10.1029/97JC02966), the two-layer viscous model (De Carolis & Desiderio,; https://doi.org/10.1016/S0375-9601(02)01503-7) and the close-packing model (De Santi & Olla,; arXiv:1512.05631) are extensively validated by using wave attenuation data collected during two different field campaigns (Weddell Sea, Antarctica, April 2000; western Arctic Ocean, autumn 2015). We use these data to inspect the performance of the three models by minimizing the differences between the measured and model wave attenuation; the retrieved ice thickness is then compared with measured data. The three models allow to fit the observation data but with important differences in the three cases. The close-packing model shows good agreement with the data for values of the ice viscosity comparable to those of grease ice in laboratory experiments. For thin ice, the Keller's model performance is similar to that of the close-packing model, while for thick ice much larger values of the ice viscosity are required, which reflects the different ability of the two models to take into account the effect of pancakes. The improvement of performance over the Keller's model achieved by the two-layer viscous model is minimal, which reflects the marginal role in the dynamics of a finite eddy viscosity in the ice-free layer. A good ice thickness retrieval can be obtained by considering the ice layer as the only source in the wave dynamics, so that the wind input can be disregarded. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113395
Appears in Collections:气候减缓与适应

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作者单位: Institute for Electromagnetic Sensing of the Environment (IREA), National Research Council, Milan, Italy; Institute of Atmospheric Sciences and Climate (ISAC), National Research Council, Cagliari, Italy; National Institute for Nuclear Physics (INFN), Cagliari, Italy; Polar Scientific Ltd, Appin, United Kingdom; Department of Civil and Environmental Engineering, Clarkson University, Potsdam, NY, United States; Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom; Applied Physics Laboratory, Civil and Environmental Engineering, University of Washington, Seattle, WA, United States

Recommended Citation:
De Santi F.,De Carolis G.,Olla P.,et al. On the Ocean Wave Attenuation Rate in Grease-Pancake Ice, a Comparison of Viscous Layer Propagation Models With Field Data[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(8)
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