Ocean waves across the Arctic: Attenuation due to dissipation dominates over scattering for periods longer than 19 s
International audience 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 bet...
Published in: | Geophysical Research Letters |
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Online Access: | https://insu.hal.science/insu-03682703 https://insu.hal.science/insu-03682703/document https://insu.hal.science/insu-03682703/file/Geophysical%20Research%20Letters%20-%202016%20-%20Ardhuin%20-%20Ocean%20waves%20across%20the%20Arctic%20Attenuation%20due%20to%20dissipation%20dominates.pdf https://doi.org/10.1002/2016GL068204 |
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ftccsdartic:oai:HAL:insu-03682703v1 2023-12-17T10:26:03+01:00 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 Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) 2016 https://insu.hal.science/insu-03682703 https://insu.hal.science/insu-03682703/document https://insu.hal.science/insu-03682703/file/Geophysical%20Research%20Letters%20-%202016%20-%20Ardhuin%20-%20Ocean%20waves%20across%20the%20Arctic%20Attenuation%20due%20to%20dissipation%20dominates.pdf https://doi.org/10.1002/2016GL068204 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/2016GL068204 insu-03682703 https://insu.hal.science/insu-03682703 https://insu.hal.science/insu-03682703/document https://insu.hal.science/insu-03682703/file/Geophysical%20Research%20Letters%20-%202016%20-%20Ardhuin%20-%20Ocean%20waves%20across%20the%20Arctic%20Attenuation%20due%20to%20dissipation%20dominates.pdf BIBCODE: 2016GeoRL.43.5775A doi:10.1002/2016GL068204 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-03682703 Geophysical Research Letters, 2016, 43, pp.5775-5783. ⟨10.1002/2016GL068204⟩ ocean waves sea ice Tara DAMOCLES [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2016 ftccsdartic https://doi.org/10.1002/2016GL068204 2023-11-19T00:10:02Z International audience 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 Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Damocles ENVELOPE(-69.350,-69.350,-69.650,-69.650) Geophysical Research Letters 43 11 5775 5783 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
ocean waves sea ice Tara DAMOCLES [SDU]Sciences of the Universe [physics] |
spellingShingle |
ocean waves sea ice Tara DAMOCLES [SDU]Sciences of the Universe [physics] 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 [SDU]Sciences of the Universe [physics] |
description |
International audience 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. |
author2 |
Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) |
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 |
HAL CCSD |
publishDate |
2016 |
url |
https://insu.hal.science/insu-03682703 https://insu.hal.science/insu-03682703/document https://insu.hal.science/insu-03682703/file/Geophysical%20Research%20Letters%20-%202016%20-%20Ardhuin%20-%20Ocean%20waves%20across%20the%20Arctic%20Attenuation%20due%20to%20dissipation%20dominates.pdf https://doi.org/10.1002/2016GL068204 |
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 |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-03682703 Geophysical Research Letters, 2016, 43, pp.5775-5783. ⟨10.1002/2016GL068204⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2016GL068204 insu-03682703 https://insu.hal.science/insu-03682703 https://insu.hal.science/insu-03682703/document https://insu.hal.science/insu-03682703/file/Geophysical%20Research%20Letters%20-%202016%20-%20Ardhuin%20-%20Ocean%20waves%20across%20the%20Arctic%20Attenuation%20due%20to%20dissipation%20dominates.pdf BIBCODE: 2016GeoRL.43.5775A doi:10.1002/2016GL068204 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
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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1785577745165582336 |