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Experimental evidence for a universal threshold characterizing wave-induced sea ice break-up

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Voermans, JJ, Rabault, J, Filchuk, K, Ryzhov, I, Heil, P, Marchenko, A, Collins, CO, Dabboor, M, Sutherland, G and Babanin, AV 2020 , 'Experimental evidence for a universal threshold characterizing wave-induced sea ice break-up' , Cryosphere, vol. 14, no. 11 , pp. 4265-4278 , doi: 10.5194/tc-14-4265-2020.

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Abstract

Waves can drastically transform a sea ice cover by inducing break-up over vast distances in the course of a few hours. However, relatively few detailed studies have described this phenomenon in a quantitative manner, and the process of sea ice break-up by waves needs to be further parameterized and verified before it can be reliably included in forecasting models. In the present work, we discuss sea ice break-up parameterization and demonstrate the existence of an observational threshold separating breaking and non-breaking cases. This threshold is based on information from two recent field campaigns, supplemented with existing observations of sea ice break-up. The data used cover a wide range of scales, from laboratory-grown sea ice to polar field observations. Remarkably, we show that both field and laboratory observations tend to converge to a single quantitative threshold at which the wave-induced sea ice breakup takes place, which opens a promising avenue for robust parametrization in operational forecasting models.

Item Type: Article
Authors/Creators:Voermans, JJ and Rabault, J and Filchuk, K and Ryzhov, I and Heil, P and Marchenko, A and Collins, CO and Dabboor, M and Sutherland, G and Babanin, AV
Keywords: sea ice, waves, sea ice break up, forecasting
Journal or Publication Title: Cryosphere
Publisher: Copernicus GmbH
ISSN: 1994-0416
DOI / ID Number: 10.5194/tc-14-4265-2020
Copyright Information:

Copyright the Author(s) 2020. This work is distributed underthe Creative Commons Attribution 4.0 License.

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