Attenuation of ocean surface waves in pancake and frazil sea ice along the coast of the Chukchi Sea
Alaskan Arctic coastlines are protected seasonally from ocean waves by the presence of coastal and shorefast sea ice. This study presents field observations collected during the autumn 2019 freeze up near Icy Cape, a coastal headland in the Chukchi Sea of the Western Arctic. The evolution of the cou...
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American Geophysical Union
2020
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ftunivreading:oai:centaur.reading.ac.uk:95006 2024-09-15T18:01:58+00:00 Attenuation of ocean surface waves in pancake and frazil sea ice along the coast of the Chukchi Sea Hosekova, Lucia Malila, Mika P. Rogers, W. Erick Roach, Lettie A. Eidam, Emily Rainville, Luc Kumar, Nirnimesh Thomson, Jim 2020-12 text https://centaur.reading.ac.uk/95006/ https://centaur.reading.ac.uk/95006/8/2020JC016746.pdf https://centaur.reading.ac.uk/95006/1/icy_cape_final_submitted.pdf en eng American Geophysical Union https://centaur.reading.ac.uk/95006/8/2020JC016746.pdf https://centaur.reading.ac.uk/95006/1/icy_cape_final_submitted.pdf Hosekova, L. <https://centaur.reading.ac.uk/view/creators/90008225.html> orcid:0000-0003-0242-7078 , Malila, M. P. orcid:0000-0002-2731-0901 , Rogers, W. E. orcid:0000-0001-8235-2218 , Roach, L. A. orcid:0000-0003-4189-3928 , Eidam, E. orcid:0000-0002-1906-8692 , Rainville, L. orcid:0000-0001-7337-225X , Kumar, N. orcid:0000-0002-7972-2756 and Thomson, J. orcid:0000-0002-8929-0088 (2020) Attenuation of ocean surface waves in pancake and frazil sea ice along the coast of the Chukchi Sea. Journal of Geophysical Research: Oceans, 125 (12). e2020JC016746. ISSN 2169-9291 doi: https://doi.org/10.1029/2020JC016746 <https://doi.org/10.1029/2020JC016746> cc_by_nc_4 Article PeerReviewed 2020 ftunivreading https://doi.org/10.1029/2020JC016746 2024-06-25T15:04:04Z Alaskan Arctic coastlines are protected seasonally from ocean waves by the presence of coastal and shorefast sea ice. This study presents field observations collected during the autumn 2019 freeze up near Icy Cape, a coastal headland in the Chukchi Sea of the Western Arctic. The evolution of the coupled air-ice-ocean-wave system during a four-day wave event was monitored using drifting wave buoys, a cross-shore mooring array, and ship-based measurements. The incident wave field with peak period of 2.5 s was attenuated by coastal pancake and frazil sea ice, reducing significant wave height by 40\% over less than 5 km of cross-shelf distance spanning water depths from 13 to 30 m. Spectral attenuation coefficients are evaluated with respect to wave and ice conditions and the proximity to the ice edge. Attenuation rates are found to be three times higher within 500 m of the ice edge, relative to values farther in the ice cover. Attenuation coefficients are in the range of $\langle 2.3,2.7\rangle$ \si{\meter^{-1}}, and follow a power-law dependence on frequency. Article in Journal/Newspaper Chukchi Chukchi Sea Sea ice CentAUR: Central Archive at the University of Reading Journal of Geophysical Research: Oceans 125 12 |
institution |
Open Polar |
collection |
CentAUR: Central Archive at the University of Reading |
op_collection_id |
ftunivreading |
language |
English |
description |
Alaskan Arctic coastlines are protected seasonally from ocean waves by the presence of coastal and shorefast sea ice. This study presents field observations collected during the autumn 2019 freeze up near Icy Cape, a coastal headland in the Chukchi Sea of the Western Arctic. The evolution of the coupled air-ice-ocean-wave system during a four-day wave event was monitored using drifting wave buoys, a cross-shore mooring array, and ship-based measurements. The incident wave field with peak period of 2.5 s was attenuated by coastal pancake and frazil sea ice, reducing significant wave height by 40\% over less than 5 km of cross-shelf distance spanning water depths from 13 to 30 m. Spectral attenuation coefficients are evaluated with respect to wave and ice conditions and the proximity to the ice edge. Attenuation rates are found to be three times higher within 500 m of the ice edge, relative to values farther in the ice cover. Attenuation coefficients are in the range of $\langle 2.3,2.7\rangle$ \si{\meter^{-1}}, and follow a power-law dependence on frequency. |
format |
Article in Journal/Newspaper |
author |
Hosekova, Lucia Malila, Mika P. Rogers, W. Erick Roach, Lettie A. Eidam, Emily Rainville, Luc Kumar, Nirnimesh Thomson, Jim |
spellingShingle |
Hosekova, Lucia Malila, Mika P. Rogers, W. Erick Roach, Lettie A. Eidam, Emily Rainville, Luc Kumar, Nirnimesh Thomson, Jim Attenuation of ocean surface waves in pancake and frazil sea ice along the coast of the Chukchi Sea |
author_facet |
Hosekova, Lucia Malila, Mika P. Rogers, W. Erick Roach, Lettie A. Eidam, Emily Rainville, Luc Kumar, Nirnimesh Thomson, Jim |
author_sort |
Hosekova, Lucia |
title |
Attenuation of ocean surface waves in pancake and frazil sea ice along the coast of the Chukchi Sea |
title_short |
Attenuation of ocean surface waves in pancake and frazil sea ice along the coast of the Chukchi Sea |
title_full |
Attenuation of ocean surface waves in pancake and frazil sea ice along the coast of the Chukchi Sea |
title_fullStr |
Attenuation of ocean surface waves in pancake and frazil sea ice along the coast of the Chukchi Sea |
title_full_unstemmed |
Attenuation of ocean surface waves in pancake and frazil sea ice along the coast of the Chukchi Sea |
title_sort |
attenuation of ocean surface waves in pancake and frazil sea ice along the coast of the chukchi sea |
publisher |
American Geophysical Union |
publishDate |
2020 |
url |
https://centaur.reading.ac.uk/95006/ https://centaur.reading.ac.uk/95006/8/2020JC016746.pdf https://centaur.reading.ac.uk/95006/1/icy_cape_final_submitted.pdf |
genre |
Chukchi Chukchi Sea Sea ice |
genre_facet |
Chukchi Chukchi Sea Sea ice |
op_relation |
https://centaur.reading.ac.uk/95006/8/2020JC016746.pdf https://centaur.reading.ac.uk/95006/1/icy_cape_final_submitted.pdf Hosekova, L. <https://centaur.reading.ac.uk/view/creators/90008225.html> orcid:0000-0003-0242-7078 , Malila, M. P. orcid:0000-0002-2731-0901 , Rogers, W. E. orcid:0000-0001-8235-2218 , Roach, L. A. orcid:0000-0003-4189-3928 , Eidam, E. orcid:0000-0002-1906-8692 , Rainville, L. orcid:0000-0001-7337-225X , Kumar, N. orcid:0000-0002-7972-2756 and Thomson, J. orcid:0000-0002-8929-0088 (2020) Attenuation of ocean surface waves in pancake and frazil sea ice along the coast of the Chukchi Sea. Journal of Geophysical Research: Oceans, 125 (12). e2020JC016746. ISSN 2169-9291 doi: https://doi.org/10.1029/2020JC016746 <https://doi.org/10.1029/2020JC016746> |
op_rights |
cc_by_nc_4 |
op_doi |
https://doi.org/10.1029/2020JC016746 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
125 |
container_issue |
12 |
_version_ |
1810439037153968128 |