Wave-induced stress and breaking of sea ice in a coupled hydrodynamic discrete-element wave–ice model
In this paper, a coupled sea ice–wave model is developed and used to analyze wave-induced stress and breaking in sea ice for a range of wave and ice conditions. The sea ice module is a discrete-element bonded-particle model, in which ice is represented as cuboid grains floating on the water surface...
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Copernicus Publications
2017
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fttriple:oai:gotriple.eu:oai:doaj.org/article:f831d19f8c714219acb40c6b53f3c772 2023-05-15T18:17:12+02:00 Wave-induced stress and breaking of sea ice in a coupled hydrodynamic discrete-element wave–ice model A. Herman 2017-11-01 https://doi.org/10.5194/tc-11-2711-2017 https://www.the-cryosphere.net/11/2711/2017/tc-11-2711-2017.pdf https://doaj.org/article/f831d19f8c714219acb40c6b53f3c772 en eng Copernicus Publications doi:10.5194/tc-11-2711-2017 1994-0416 1994-0424 https://www.the-cryosphere.net/11/2711/2017/tc-11-2711-2017.pdf https://doaj.org/article/f831d19f8c714219acb40c6b53f3c772 undefined The Cryosphere, Vol 11, Pp 2711-2725 (2017) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2017 fttriple https://doi.org/10.5194/tc-11-2711-2017 2023-01-22T19:37:27Z In this paper, a coupled sea ice–wave model is developed and used to analyze wave-induced stress and breaking in sea ice for a range of wave and ice conditions. The sea ice module is a discrete-element bonded-particle model, in which ice is represented as cuboid grains floating on the water surface that can be connected to their neighbors by elastic joints. The joints may break if instantaneous stresses acting on them exceed their strength. The wave module is based on an open-source version of the Non-Hydrostatic WAVE model (NHWAVE). The two modules are coupled with proper boundary conditions for pressure and velocity, exchanged at every wave model time step. In the present version, the model operates in two dimensions (one vertical and one horizontal) and is suitable for simulating compact ice in which heave and pitch motion dominates over surge. In a series of simulations with varying sea ice properties and incoming wavelength it is shown that wave-induced stress reaches maximum values at a certain distance from the ice edge. The value of maximum stress depends on both ice properties and characteristics of incoming waves, but, crucially for ice breaking, the location at which the maximum occurs does not change with the incoming wavelength. Consequently, both regular and random (Jonswap spectrum) waves break the ice into floes with almost identical sizes. The width of the zone of broken ice depends on ice strength and wave attenuation rates in the ice. Article in Journal/Newspaper Sea ice The Cryosphere Unknown The Cryosphere 11 6 2711 2725 |
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geo envir A. Herman Wave-induced stress and breaking of sea ice in a coupled hydrodynamic discrete-element wave–ice model |
topic_facet |
geo envir |
description |
In this paper, a coupled sea ice–wave model is developed and used to analyze wave-induced stress and breaking in sea ice for a range of wave and ice conditions. The sea ice module is a discrete-element bonded-particle model, in which ice is represented as cuboid grains floating on the water surface that can be connected to their neighbors by elastic joints. The joints may break if instantaneous stresses acting on them exceed their strength. The wave module is based on an open-source version of the Non-Hydrostatic WAVE model (NHWAVE). The two modules are coupled with proper boundary conditions for pressure and velocity, exchanged at every wave model time step. In the present version, the model operates in two dimensions (one vertical and one horizontal) and is suitable for simulating compact ice in which heave and pitch motion dominates over surge. In a series of simulations with varying sea ice properties and incoming wavelength it is shown that wave-induced stress reaches maximum values at a certain distance from the ice edge. The value of maximum stress depends on both ice properties and characteristics of incoming waves, but, crucially for ice breaking, the location at which the maximum occurs does not change with the incoming wavelength. Consequently, both regular and random (Jonswap spectrum) waves break the ice into floes with almost identical sizes. The width of the zone of broken ice depends on ice strength and wave attenuation rates in the ice. |
format |
Article in Journal/Newspaper |
author |
A. Herman |
author_facet |
A. Herman |
author_sort |
A. Herman |
title |
Wave-induced stress and breaking of sea ice in a coupled hydrodynamic discrete-element wave–ice model |
title_short |
Wave-induced stress and breaking of sea ice in a coupled hydrodynamic discrete-element wave–ice model |
title_full |
Wave-induced stress and breaking of sea ice in a coupled hydrodynamic discrete-element wave–ice model |
title_fullStr |
Wave-induced stress and breaking of sea ice in a coupled hydrodynamic discrete-element wave–ice model |
title_full_unstemmed |
Wave-induced stress and breaking of sea ice in a coupled hydrodynamic discrete-element wave–ice model |
title_sort |
wave-induced stress and breaking of sea ice in a coupled hydrodynamic discrete-element wave–ice model |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-2711-2017 https://www.the-cryosphere.net/11/2711/2017/tc-11-2711-2017.pdf https://doaj.org/article/f831d19f8c714219acb40c6b53f3c772 |
genre |
Sea ice The Cryosphere |
genre_facet |
Sea ice The Cryosphere |
op_source |
The Cryosphere, Vol 11, Pp 2711-2725 (2017) |
op_relation |
doi:10.5194/tc-11-2711-2017 1994-0416 1994-0424 https://www.the-cryosphere.net/11/2711/2017/tc-11-2711-2017.pdf https://doaj.org/article/f831d19f8c714219acb40c6b53f3c772 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-11-2711-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
6 |
container_start_page |
2711 |
op_container_end_page |
2725 |
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1766191299503849472 |