Ocean waves across the Arctic: attenuation due to dissipation dominates over scattering for periods longer than 19 s
The poorly understood attenuation of surface waves in sea ice is generally attributed to the combination of scattering and dissipation. Scattering and dissipation have very different effects on the directional and temporal distribution of wave energy, making it possible to better understand their re...
Published in: | Geophysical Research Letters |
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Online Access: | https://archimer.ifremer.fr/doc/00333/44455/44127.pdf https://doi.org/10.1002/2016GL068204 https://archimer.ifremer.fr/doc/00333/44455/ |
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ftarchimer:oai:archimer.ifremer.fr:44455 2023-05-15T15:04:22+02:00 Ocean waves across the Arctic: attenuation due to dissipation dominates over scattering for periods longer than 19 s Ardhuin, Fabrice Sutherland, Peter Doble, Martin Wadhams, Peter 2016-06 application/pdf https://archimer.ifremer.fr/doc/00333/44455/44127.pdf https://doi.org/10.1002/2016GL068204 https://archimer.ifremer.fr/doc/00333/44455/ eng eng Amer Geophysical Union info:eu-repo/grantAgreement/EC/FP7/607476/EU//SWARP https://archimer.ifremer.fr/doc/00333/44455/44127.pdf doi:10.1002/2016GL068204 https://archimer.ifremer.fr/doc/00333/44455/ 2016 American Geophysical Union. All Rights Reserved. info:eu-repo/semantics/openAccess restricted use Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2016-06 , Vol. 43 , N. 11 , P. 5775-5783 ocean waves sea ice Tara DAMOCLES text Publication info:eu-repo/semantics/article 2016 ftarchimer https://doi.org/10.1002/2016GL068204 2021-09-23T20:28:20Z The poorly understood attenuation of surface waves in sea ice is generally attributed to the combination of scattering and dissipation. Scattering and dissipation have very different effects on the directional and temporal distribution of wave energy, making it possible to better understand their relative importance by analysis of swell directional spreading and arrival times. Here we compare results of a spectral wave model – using adjustable scattering and dissipation attenuation formulations – with wave measurements far inside the ice pack. In this case, scattering plays a negligible role in the attenuation of long swells. Specifically, scattering-dominated attenuation would produce directional wave spectra much broader than the ones recorded, and swell events arriving later and lasting much longer than observed. Details of the dissipation process remain uncertain. Average dissipation rates are consistent with creep effects but are 12 times those expected for a laminar boundary layer under a smooth solid ice plate. Article in Journal/Newspaper Arctic ice pack Sea ice Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Arctic Damocles ENVELOPE(-69.350,-69.350,-69.650,-69.650) Geophysical Research Letters 43 11 5775 5783 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
ocean waves sea ice Tara DAMOCLES |
spellingShingle |
ocean waves sea ice Tara DAMOCLES Ardhuin, Fabrice Sutherland, Peter Doble, Martin Wadhams, Peter Ocean waves across the Arctic: attenuation due to dissipation dominates over scattering for periods longer than 19 s |
topic_facet |
ocean waves sea ice Tara DAMOCLES |
description |
The poorly understood attenuation of surface waves in sea ice is generally attributed to the combination of scattering and dissipation. Scattering and dissipation have very different effects on the directional and temporal distribution of wave energy, making it possible to better understand their relative importance by analysis of swell directional spreading and arrival times. Here we compare results of a spectral wave model – using adjustable scattering and dissipation attenuation formulations – with wave measurements far inside the ice pack. In this case, scattering plays a negligible role in the attenuation of long swells. Specifically, scattering-dominated attenuation would produce directional wave spectra much broader than the ones recorded, and swell events arriving later and lasting much longer than observed. Details of the dissipation process remain uncertain. Average dissipation rates are consistent with creep effects but are 12 times those expected for a laminar boundary layer under a smooth solid ice plate. |
format |
Article in Journal/Newspaper |
author |
Ardhuin, Fabrice Sutherland, Peter Doble, Martin Wadhams, Peter |
author_facet |
Ardhuin, Fabrice Sutherland, Peter Doble, Martin Wadhams, Peter |
author_sort |
Ardhuin, Fabrice |
title |
Ocean waves across the Arctic: attenuation due to dissipation dominates over scattering for periods longer than 19 s |
title_short |
Ocean waves across the Arctic: attenuation due to dissipation dominates over scattering for periods longer than 19 s |
title_full |
Ocean waves across the Arctic: attenuation due to dissipation dominates over scattering for periods longer than 19 s |
title_fullStr |
Ocean waves across the Arctic: attenuation due to dissipation dominates over scattering for periods longer than 19 s |
title_full_unstemmed |
Ocean waves across the Arctic: attenuation due to dissipation dominates over scattering for periods longer than 19 s |
title_sort |
ocean waves across the arctic: attenuation due to dissipation dominates over scattering for periods longer than 19 s |
publisher |
Amer Geophysical Union |
publishDate |
2016 |
url |
https://archimer.ifremer.fr/doc/00333/44455/44127.pdf https://doi.org/10.1002/2016GL068204 https://archimer.ifremer.fr/doc/00333/44455/ |
long_lat |
ENVELOPE(-69.350,-69.350,-69.650,-69.650) |
geographic |
Arctic Damocles |
geographic_facet |
Arctic Damocles |
genre |
Arctic ice pack Sea ice |
genre_facet |
Arctic ice pack Sea ice |
op_source |
Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2016-06 , Vol. 43 , N. 11 , P. 5775-5783 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/607476/EU//SWARP https://archimer.ifremer.fr/doc/00333/44455/44127.pdf doi:10.1002/2016GL068204 https://archimer.ifremer.fr/doc/00333/44455/ |
op_rights |
2016 American Geophysical Union. All Rights Reserved. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1002/2016GL068204 |
container_title |
Geophysical Research Letters |
container_volume |
43 |
container_issue |
11 |
container_start_page |
5775 |
op_container_end_page |
5783 |
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1766336157541466112 |