Airborne remote sensing of ocean wave directional wavenumber spectra in the marginal ice zone
Interactions between surface waves and sea ice are thought to be an important, but poorly understood, physical process in the atmosphere-ice-ocean system. In this work, airborne scanning lidar was used to observe ocean waves propagating into the marginal ice zone (MIZ). These represent the first dir...
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Amer Geophysical Union
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ftarchimer:oai:archimer.ifremer.fr:44454 2023-05-15T18:18:15+02:00 Airborne remote sensing of ocean wave directional wavenumber spectra in the marginal ice zone Sutherland, Peter Gascard, Jean-claude 2016-05 application/pdf https://archimer.ifremer.fr/doc/00333/44454/44125.pdf https://archimer.ifremer.fr/doc/00333/44454/44126.pdf https://doi.org/10.1002/2016GL067713 https://archimer.ifremer.fr/doc/00333/44454/ eng eng Amer Geophysical Union info:eu-repo/grantAgreement/EC/FP7/265863/EU//ACCESS https://archimer.ifremer.fr/doc/00333/44454/44125.pdf https://archimer.ifremer.fr/doc/00333/44454/44126.pdf doi:10.1002/2016GL067713 https://archimer.ifremer.fr/doc/00333/44454/ 2016 American Geophysical Union. All Rights Reserved. info:eu-repo/semantics/openAccess restricted use Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2016-05 , Vol. 43 , N. 10 , P. 5151-5159 text Publication info:eu-repo/semantics/article 2016 ftarchimer https://doi.org/10.1002/2016GL067713 2021-09-23T20:28:20Z Interactions between surface waves and sea ice are thought to be an important, but poorly understood, physical process in the atmosphere-ice-ocean system. In this work, airborne scanning lidar was used to observe ocean waves propagating into the marginal ice zone (MIZ). These represent the first direct spatial measurements of the surface wave field in the polar MIZ. Data were compared against two attenuation models, one based on viscous dissipation and one based on scattering. Both models were capable of reproducing the measured wave energy. The observed wavenumber dependence of attenuation was found to be consistent with viscous processes, while the spectral spreading of higher wavenumbers suggested a scattering mechanism. Both models reproduced a change in peak direction due to preferential directional filtering. Floe sizes were recorded using co-located visible imagery, and their distribution was found to be consistent with ice breakup by the wave field. Article in Journal/Newspaper Sea ice Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Geophysical Research Letters 43 10 5151 5159 |
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 |
description |
Interactions between surface waves and sea ice are thought to be an important, but poorly understood, physical process in the atmosphere-ice-ocean system. In this work, airborne scanning lidar was used to observe ocean waves propagating into the marginal ice zone (MIZ). These represent the first direct spatial measurements of the surface wave field in the polar MIZ. Data were compared against two attenuation models, one based on viscous dissipation and one based on scattering. Both models were capable of reproducing the measured wave energy. The observed wavenumber dependence of attenuation was found to be consistent with viscous processes, while the spectral spreading of higher wavenumbers suggested a scattering mechanism. Both models reproduced a change in peak direction due to preferential directional filtering. Floe sizes were recorded using co-located visible imagery, and their distribution was found to be consistent with ice breakup by the wave field. |
format |
Article in Journal/Newspaper |
author |
Sutherland, Peter Gascard, Jean-claude |
spellingShingle |
Sutherland, Peter Gascard, Jean-claude Airborne remote sensing of ocean wave directional wavenumber spectra in the marginal ice zone |
author_facet |
Sutherland, Peter Gascard, Jean-claude |
author_sort |
Sutherland, Peter |
title |
Airborne remote sensing of ocean wave directional wavenumber spectra in the marginal ice zone |
title_short |
Airborne remote sensing of ocean wave directional wavenumber spectra in the marginal ice zone |
title_full |
Airborne remote sensing of ocean wave directional wavenumber spectra in the marginal ice zone |
title_fullStr |
Airborne remote sensing of ocean wave directional wavenumber spectra in the marginal ice zone |
title_full_unstemmed |
Airborne remote sensing of ocean wave directional wavenumber spectra in the marginal ice zone |
title_sort |
airborne remote sensing of ocean wave directional wavenumber spectra in the marginal ice zone |
publisher |
Amer Geophysical Union |
publishDate |
2016 |
url |
https://archimer.ifremer.fr/doc/00333/44454/44125.pdf https://archimer.ifremer.fr/doc/00333/44454/44126.pdf https://doi.org/10.1002/2016GL067713 https://archimer.ifremer.fr/doc/00333/44454/ |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2016-05 , Vol. 43 , N. 10 , P. 5151-5159 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/265863/EU//ACCESS https://archimer.ifremer.fr/doc/00333/44454/44125.pdf https://archimer.ifremer.fr/doc/00333/44454/44126.pdf doi:10.1002/2016GL067713 https://archimer.ifremer.fr/doc/00333/44454/ |
op_rights |
2016 American Geophysical Union. All Rights Reserved. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1002/2016GL067713 |
container_title |
Geophysical Research Letters |
container_volume |
43 |
container_issue |
10 |
container_start_page |
5151 |
op_container_end_page |
5159 |
_version_ |
1766194777783533568 |