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 <q>grains</q> floating on...
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ftdoajarticles:oai:doaj.org/article:f831d19f8c714219acb40c6b53f3c772 2023-05-15T18:17:13+02:00 Wave-induced stress and breaking of sea ice in a coupled hydrodynamic discrete-element wave–ice model A. Herman 2017-11-01T00:00:00Z https://doi.org/10.5194/tc-11-2711-2017 https://doaj.org/article/f831d19f8c714219acb40c6b53f3c772 EN eng Copernicus Publications https://www.the-cryosphere.net/11/2711/2017/tc-11-2711-2017.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-11-2711-2017 1994-0416 1994-0424 https://doaj.org/article/f831d19f8c714219acb40c6b53f3c772 The Cryosphere, Vol 11, Pp 2711-2725 (2017) Environmental sciences GE1-350 Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.5194/tc-11-2711-2017 2022-12-31T15:53:07Z 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 <q>grains</q> 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 Directory of Open Access Journals: DOAJ Articles The Cryosphere 11 6 2711 2725 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 A. Herman Wave-induced stress and breaking of sea ice in a coupled hydrodynamic discrete-element wave–ice model |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
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 <q>grains</q> 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://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 |
https://www.the-cryosphere.net/11/2711/2017/tc-11-2711-2017.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-11-2711-2017 1994-0416 1994-0424 https://doaj.org/article/f831d19f8c714219acb40c6b53f3c772 |
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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1766191304696397824 |