Observation of on-ice wind waves under grease ice in the western Arctic Ocean
The significant reduction of the sea ice extent in the western Arctic has been observed by the sustained satellite observations since 1979. The opening ocean is now allowing waves to evolve and propagate under the presence of the Arctic sea ice. A better understanding of the wave-ice interaction is...
Published in: | Polar Science |
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Format: | Article in Journal/Newspaper |
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2021
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ftnipr:oai:nipr.repo.nii.ac.jp:00016398 2023-05-15T14:34:19+02:00 Observation of on-ice wind waves under grease ice in the western Arctic Ocean 2021-03 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16398 http://id.nii.ac.jp/1291/00016276/ en eng https://doi.org/10.1016/j.polar.2020.100567 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16398 http://id.nii.ac.jp/1291/00016276/ Polar Science, 100567(2021-03) 18739652 Wave ice interaction Grease ice On-ice wind SAR Arctic Journal Article 2021 ftnipr https://doi.org/10.1016/j.polar.2020.100567 2022-12-03T19:43:21Z The significant reduction of the sea ice extent in the western Arctic has been observed by the sustained satellite observations since 1979. The opening ocean is now allowing waves to evolve and propagate under the presence of the Arctic sea ice. A better understanding of the wave-ice interaction is necessary for the safe shipping over the sea ice covered Arctic Ocean and to improve the Arctic climate projection. During R/V Mirai Arctic Expedition in October 2019, two drifting wave-buoys were concurrently deployed in the open ocean and the Arctic marginal ice zone (MIZ) with grease ice and pancake ice. The wave and sea ice conditions at the time of the deployments were documented in detail. Based on the wave buoy data and the sea ice edge estimated by a Synthetic Aperture Radar (SAR) image, attenuation rates of waves under the grease ice are estimated. Good agreement in the frequency dependency of the wave attenuation rate is presented between the observational results and the theoretical prediction from the viscous model of Weber (1987). The agreement implies that the observed surface waves were attenuated by the viscous damping beneath grease ice. It is also found that the observed attenuation rates were generally lower than the previous studies. Several possible factors are discussed, such as the sea ice type, wind energy input, and uncertainties in the estimation of the attenuation rate. Article in Journal/Newspaper Arctic Arctic Ocean Polar Science Polar Science Sea ice National Institute of Polar Research Repository, Japan Arctic Arctic Ocean Pancake ENVELOPE(-55.815,-55.815,52.600,52.600) Polar Science 27 100567 |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Wave ice interaction Grease ice On-ice wind SAR Arctic |
spellingShingle |
Wave ice interaction Grease ice On-ice wind SAR Arctic Observation of on-ice wind waves under grease ice in the western Arctic Ocean |
topic_facet |
Wave ice interaction Grease ice On-ice wind SAR Arctic |
description |
The significant reduction of the sea ice extent in the western Arctic has been observed by the sustained satellite observations since 1979. The opening ocean is now allowing waves to evolve and propagate under the presence of the Arctic sea ice. A better understanding of the wave-ice interaction is necessary for the safe shipping over the sea ice covered Arctic Ocean and to improve the Arctic climate projection. During R/V Mirai Arctic Expedition in October 2019, two drifting wave-buoys were concurrently deployed in the open ocean and the Arctic marginal ice zone (MIZ) with grease ice and pancake ice. The wave and sea ice conditions at the time of the deployments were documented in detail. Based on the wave buoy data and the sea ice edge estimated by a Synthetic Aperture Radar (SAR) image, attenuation rates of waves under the grease ice are estimated. Good agreement in the frequency dependency of the wave attenuation rate is presented between the observational results and the theoretical prediction from the viscous model of Weber (1987). The agreement implies that the observed surface waves were attenuated by the viscous damping beneath grease ice. It is also found that the observed attenuation rates were generally lower than the previous studies. Several possible factors are discussed, such as the sea ice type, wind energy input, and uncertainties in the estimation of the attenuation rate. |
format |
Article in Journal/Newspaper |
title |
Observation of on-ice wind waves under grease ice in the western Arctic Ocean |
title_short |
Observation of on-ice wind waves under grease ice in the western Arctic Ocean |
title_full |
Observation of on-ice wind waves under grease ice in the western Arctic Ocean |
title_fullStr |
Observation of on-ice wind waves under grease ice in the western Arctic Ocean |
title_full_unstemmed |
Observation of on-ice wind waves under grease ice in the western Arctic Ocean |
title_sort |
observation of on-ice wind waves under grease ice in the western arctic ocean |
publishDate |
2021 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16398 http://id.nii.ac.jp/1291/00016276/ |
long_lat |
ENVELOPE(-55.815,-55.815,52.600,52.600) |
geographic |
Arctic Arctic Ocean Pancake |
geographic_facet |
Arctic Arctic Ocean Pancake |
genre |
Arctic Arctic Ocean Polar Science Polar Science Sea ice |
genre_facet |
Arctic Arctic Ocean Polar Science Polar Science Sea ice |
op_relation |
https://doi.org/10.1016/j.polar.2020.100567 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16398 http://id.nii.ac.jp/1291/00016276/ Polar Science, 100567(2021-03) 18739652 |
op_doi |
https://doi.org/10.1016/j.polar.2020.100567 |
container_title |
Polar Science |
container_volume |
27 |
container_start_page |
100567 |
_version_ |
1766307380058914816 |