ArticlePhilosophical transactions. Series A, Mathematical, physical, and engineering sciences2022
Granular effects in sea ice rheology in the marginal ice zone.
Article in Philosophical transactions. Series A, Mathematical, physical, and engineering sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 27 citations in OpenAlex.
- Wave propagation in the marginal ice zone: connections and feedback mechanisms within the air-ice-ocean system.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2022Review
- Modelling the Arctic wave-affected marginal ice zone: a comparison with ICESat-2 observations.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2022Article
- Floes, the marginal ice zone and coupled wave-sea-ice feedbacks.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2022Review
- Theory, modelling and observations of marginal ice zone dynamics: multidisciplinary perspectives and outlooks.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2022Article
- Marginal ice zone dynamics: future research perspectives and pathways.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2022Review
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1 author at 1 institution in 1 country.
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Abstract
Sea ice in the marginal ice zone (MIZ) consists of relatively small floes with a wide size span. In response to oceanic and atmospheric forcing, it behaves as an approximately two-dimensional, highly polydisperse granular material. The established viscous-plastic rheologies used in continuum sea ice models are not suitable for the MIZ; the collisional rheology, in which sea ice is treated as a granular gas, captures only one aspect of the granular behaviour, typical for a narrow range of conditions when dynamics is dominated by binary floe collisions. This paper reviews rheology models and concepts from research on granular materials relevant for MIZ dynamics (average stress as a result of 'microscopic' interactions of grains; [Formula: see text] and collisional rheologies). Idealized discrete-element simulations are used to illustrate granular effects and strong influence of the floe size distribution on strain-stress relationships in sheared sea ice, demonstrating the need for an MIZ rheology model capturing the whole range of 'regimes', from quasi-static/dense flow in the inner MIZ to the inertial flow in the outer MIZ. This article is part of the theme issue 'Theory, modelling and observations of marginal ice zone dynamics: multidisciplinary perspectives and outlooks'.
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