On the ocean wave attenuation rate in grease-pancake ice, a comparison of viscous layer propagation models with field data
The ability of viscous layer models to describe the attenuation of waves propagating in grease-pancake ice covered ocean is investigated. In particular, the Keller's model Keller [1998], the two-layer viscous model [De Carolis and Desiderio 2002] and the close-packing model [De Santi and Olla 2...
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ftdatacite:10.48550/arxiv.1807.01267 2023-05-15T13:53:43+02:00 On the ocean wave attenuation rate in grease-pancake ice, a comparison of viscous layer propagation models with field data De Santi, Francesca De Carolis, Giacomo Olla, Piero Doble, Martin Cheng, Sukun Shen, Hayley H. Thomson, Jim 2018 https://dx.doi.org/10.48550/arxiv.1807.01267 https://arxiv.org/abs/1807.01267 unknown arXiv https://dx.doi.org/10.1029/2018jc013865 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Atmospheric and Oceanic Physics physics.ao-ph Fluid Dynamics physics.flu-dyn FOS Physical sciences article-journal Article ScholarlyArticle Text 2018 ftdatacite https://doi.org/10.48550/arxiv.1807.01267 https://doi.org/10.1029/2018jc013865 2022-04-01T09:10:19Z The ability of viscous layer models to describe the attenuation of waves propagating in grease-pancake ice covered ocean is investigated. In particular, the Keller's model Keller [1998], the two-layer viscous model [De Carolis and Desiderio 2002] and the close-packing model [De Santi and Olla 2017] are extensively validated by using wave attenuation data collected during two different field campaigns (Weddell Sea, Antarctica, April 2000; western Arctic Ocean, autumn 2015). We use these data to validate the three models by minimizing the differences between the measured and model wave attenuation; the retrieved ice thickness is then compared with measured data. The three models allow to fit the observation data, but with important differences in the three cases. The close-packing model shows good agreement with the data for values of the ice viscosity comparable to those of grease ice in laboratory experiments. For thin ice, the Keller's model performance is similar to that of the close-packing model, while for thick ice much larger values of the ice viscosity are required, which reflects the different ability of the two models to take into account the effect of pancakes. The improvement of performance over the Keller's model achieved by the two-layer viscous model is minimal, which reflects the marginal role in the dynamics of a finite eddy viscosity in the ice-free layer. A good ice thickness retrieval can be obtained by considering the ice layer as the only source in the wave dynamics, so that the wind input can be disregarded. Text Antarc* Antarctica Arctic Arctic Ocean Weddell Sea DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean Weddell Sea Weddell Pancake ENVELOPE(-55.815,-55.815,52.600,52.600) Keller ENVELOPE(-58.406,-58.406,-62.073,-62.073) |
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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 Fluid Dynamics physics.flu-dyn FOS Physical sciences |
spellingShingle |
Atmospheric and Oceanic Physics physics.ao-ph Fluid Dynamics physics.flu-dyn FOS Physical sciences De Santi, Francesca De Carolis, Giacomo Olla, Piero Doble, Martin Cheng, Sukun Shen, Hayley H. Thomson, Jim On the ocean wave attenuation rate in grease-pancake ice, a comparison of viscous layer propagation models with field data |
topic_facet |
Atmospheric and Oceanic Physics physics.ao-ph Fluid Dynamics physics.flu-dyn FOS Physical sciences |
description |
The ability of viscous layer models to describe the attenuation of waves propagating in grease-pancake ice covered ocean is investigated. In particular, the Keller's model Keller [1998], the two-layer viscous model [De Carolis and Desiderio 2002] and the close-packing model [De Santi and Olla 2017] are extensively validated by using wave attenuation data collected during two different field campaigns (Weddell Sea, Antarctica, April 2000; western Arctic Ocean, autumn 2015). We use these data to validate the three models by minimizing the differences between the measured and model wave attenuation; the retrieved ice thickness is then compared with measured data. The three models allow to fit the observation data, but with important differences in the three cases. The close-packing model shows good agreement with the data for values of the ice viscosity comparable to those of grease ice in laboratory experiments. For thin ice, the Keller's model performance is similar to that of the close-packing model, while for thick ice much larger values of the ice viscosity are required, which reflects the different ability of the two models to take into account the effect of pancakes. The improvement of performance over the Keller's model achieved by the two-layer viscous model is minimal, which reflects the marginal role in the dynamics of a finite eddy viscosity in the ice-free layer. A good ice thickness retrieval can be obtained by considering the ice layer as the only source in the wave dynamics, so that the wind input can be disregarded. |
format |
Text |
author |
De Santi, Francesca De Carolis, Giacomo Olla, Piero Doble, Martin Cheng, Sukun Shen, Hayley H. Thomson, Jim |
author_facet |
De Santi, Francesca De Carolis, Giacomo Olla, Piero Doble, Martin Cheng, Sukun Shen, Hayley H. Thomson, Jim |
author_sort |
De Santi, Francesca |
title |
On the ocean wave attenuation rate in grease-pancake ice, a comparison of viscous layer propagation models with field data |
title_short |
On the ocean wave attenuation rate in grease-pancake ice, a comparison of viscous layer propagation models with field data |
title_full |
On the ocean wave attenuation rate in grease-pancake ice, a comparison of viscous layer propagation models with field data |
title_fullStr |
On the ocean wave attenuation rate in grease-pancake ice, a comparison of viscous layer propagation models with field data |
title_full_unstemmed |
On the ocean wave attenuation rate in grease-pancake ice, a comparison of viscous layer propagation models with field data |
title_sort |
on the ocean wave attenuation rate in grease-pancake ice, a comparison of viscous layer propagation models with field data |
publisher |
arXiv |
publishDate |
2018 |
url |
https://dx.doi.org/10.48550/arxiv.1807.01267 https://arxiv.org/abs/1807.01267 |
long_lat |
ENVELOPE(-55.815,-55.815,52.600,52.600) ENVELOPE(-58.406,-58.406,-62.073,-62.073) |
geographic |
Arctic Arctic Ocean Weddell Sea Weddell Pancake Keller |
geographic_facet |
Arctic Arctic Ocean Weddell Sea Weddell Pancake Keller |
genre |
Antarc* Antarctica Arctic Arctic Ocean Weddell Sea |
genre_facet |
Antarc* Antarctica Arctic Arctic Ocean Weddell Sea |
op_relation |
https://dx.doi.org/10.1029/2018jc013865 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1807.01267 https://doi.org/10.1029/2018jc013865 |
_version_ |
1766259100442689536 |