A two layer model for wave dissipation in sea ice

Sea ice is highly complex due to the inhomogeneity of the physical properties (e.g. temperature and salinity) as well as the permeability and mixture of water and a matrix of sea ice and/or sea ice crystals. Such complexity has proven itself to be difficult to parameterize in operational wave models...

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Bibliographic Details
Main Authors: Sutherland, Graig, Rabault, Jean, Christensen, Kai H., Jensen, Atle
Format: Report
Language:unknown
Published: arXiv 2018
Subjects:
Atmospheric and Oceanic Physics physics.ao-ph
FOS Physical sciences
Sea ice
Online Access:https://dx.doi.org/10.48550/arxiv.1805.01134
https://arxiv.org/abs/1805.01134
id ftdatacite:10.48550/arxiv.1805.01134
record_format openpolar
spelling ftdatacite:10.48550/arxiv.1805.01134 2023-05-15T18:17:05+02:00 A two layer model for wave dissipation in sea ice Sutherland, Graig Rabault, Jean Christensen, Kai H. Jensen, Atle 2018 https://dx.doi.org/10.48550/arxiv.1805.01134 https://arxiv.org/abs/1805.01134 unknown arXiv arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Atmospheric and Oceanic Physics physics.ao-ph FOS Physical sciences Preprint Article article CreativeWork 2018 ftdatacite https://doi.org/10.48550/arxiv.1805.01134 2022-04-01T09:40:06Z Sea ice is highly complex due to the inhomogeneity of the physical properties (e.g. temperature and salinity) as well as the permeability and mixture of water and a matrix of sea ice and/or sea ice crystals. Such complexity has proven itself to be difficult to parameterize in operational wave models. Instead, we assume that there exists a self-similarity scaling law which captures the first order properties. Using dimensional analysis, an equation for the kinematic viscosity is derived which is proportional to the wave frequency and the ice thickness squared. In addition, the model allows for a two-layer structure where the oscillating pressure gradient due to wave propagation only exists in a fraction of the total ice thickness. These two assumptions lead to a spatial dissipation rate that is a function of ice thickness and wavenumber. The derived dissipation rate compares favourably with available field and laboratory observations. : Accepted to special issue on wave-ice interaction in Applied Ocean Research. 15 pages, 7 figures Report Sea ice DataCite Metadata Store (German National Library of Science and Technology)
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language unknown
topic Atmospheric and Oceanic Physics physics.ao-ph
FOS Physical sciences
spellingShingle Atmospheric and Oceanic Physics physics.ao-ph
FOS Physical sciences
Sutherland, Graig
Rabault, Jean
Christensen, Kai H.
Jensen, Atle
A two layer model for wave dissipation in sea ice
topic_facet Atmospheric and Oceanic Physics physics.ao-ph
FOS Physical sciences
description Sea ice is highly complex due to the inhomogeneity of the physical properties (e.g. temperature and salinity) as well as the permeability and mixture of water and a matrix of sea ice and/or sea ice crystals. Such complexity has proven itself to be difficult to parameterize in operational wave models. Instead, we assume that there exists a self-similarity scaling law which captures the first order properties. Using dimensional analysis, an equation for the kinematic viscosity is derived which is proportional to the wave frequency and the ice thickness squared. In addition, the model allows for a two-layer structure where the oscillating pressure gradient due to wave propagation only exists in a fraction of the total ice thickness. These two assumptions lead to a spatial dissipation rate that is a function of ice thickness and wavenumber. The derived dissipation rate compares favourably with available field and laboratory observations. : Accepted to special issue on wave-ice interaction in Applied Ocean Research. 15 pages, 7 figures
format Report
author Sutherland, Graig
Rabault, Jean
Christensen, Kai H.
Jensen, Atle
author_facet Sutherland, Graig
Rabault, Jean
Christensen, Kai H.
Jensen, Atle
author_sort Sutherland, Graig
title A two layer model for wave dissipation in sea ice
title_short A two layer model for wave dissipation in sea ice
title_full A two layer model for wave dissipation in sea ice
title_fullStr A two layer model for wave dissipation in sea ice
title_full_unstemmed A two layer model for wave dissipation in sea ice
title_sort two layer model for wave dissipation in sea ice
publisher arXiv
publishDate 2018
url https://dx.doi.org/10.48550/arxiv.1805.01134
https://arxiv.org/abs/1805.01134
genre Sea ice
genre_facet Sea ice
op_rights arXiv.org perpetual, non-exclusive license
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
op_doi https://doi.org/10.48550/arxiv.1805.01134
_version_ 1766191112686403584

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