Thin ice and storms: Sea ice deformation from buoy arrays deployed during N-ICE2015
Arctic sea ice has displayed significant thinning as well as an increase in drift speed in recent years. Taken together this suggests an associated rise in sea ice deformation rate. A winter and spring expedition to the sea ice covered region north of Svalbard–the Norwegian young sea ICE2015 expedit...
Published in: | Journal of Geophysical Research: Oceans |
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ftpubman:oai:pure.mpg.de:item_2465354 2023-08-20T04:03:15+02:00 Thin ice and storms: Sea ice deformation from buoy arrays deployed during N-ICE2015 Itkin, P. Spreen, G. Cheng, B. Doble, M. Girard-Ardhuin, F. Haapala, J. Hughes, N. Kaleschke, L. Nicolaus, M. Wilkinson, J. 2017-06 http://hdl.handle.net/11858/00-001M-0000-002D-A6D0-9 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1002/2016JC012403 http://hdl.handle.net/11858/00-001M-0000-002D-A6D0-9 Journal of Geophysical Research: Oceans info:eu-repo/semantics/article 2017 ftpubman https://doi.org/10.1002/2016JC012403 2023-08-01T22:45:33Z Arctic sea ice has displayed significant thinning as well as an increase in drift speed in recent years. Taken together this suggests an associated rise in sea ice deformation rate. A winter and spring expedition to the sea ice covered region north of Svalbard–the Norwegian young sea ICE2015 expedition (N-ICE2015)—gave an opportunity to deploy extensive buoy arrays and to monitor the deformation of the first-year and second-year ice now common in the majority of the Arctic Basin. During the 5 month long expedition, the ice cover underwent several strong deformation events, including a powerful storm in early February that damaged the ice cover irreversibly. The values of total deformation measured during N-ICE2015 exceed previously measured values in the Arctic Basin at similar scales: At 100 km scale, N-ICE2015 values averaged above 0.1 d−1, compared to rates of 0.08 d−1 or less for previous buoy arrays. The exponent of the power law between the deformation length scale and total deformation developed over the season from 0.37 to 0.54 with an abrupt increase immediately after the early February storm, indicating a weakened ice cover with more free drift of the sea ice floes. Our results point to a general increase in deformation associated with the younger and thinner Arctic sea ice and to a potentially destructive role of winter storms. Article in Journal/Newspaper Arctic Basin Arctic Sea ice Svalbard Max Planck Society: MPG.PuRe Arctic Svalbard Journal of Geophysical Research: Oceans 122 6 4661 4674 |
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Max Planck Society: MPG.PuRe |
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English |
description |
Arctic sea ice has displayed significant thinning as well as an increase in drift speed in recent years. Taken together this suggests an associated rise in sea ice deformation rate. A winter and spring expedition to the sea ice covered region north of Svalbard–the Norwegian young sea ICE2015 expedition (N-ICE2015)—gave an opportunity to deploy extensive buoy arrays and to monitor the deformation of the first-year and second-year ice now common in the majority of the Arctic Basin. During the 5 month long expedition, the ice cover underwent several strong deformation events, including a powerful storm in early February that damaged the ice cover irreversibly. The values of total deformation measured during N-ICE2015 exceed previously measured values in the Arctic Basin at similar scales: At 100 km scale, N-ICE2015 values averaged above 0.1 d−1, compared to rates of 0.08 d−1 or less for previous buoy arrays. The exponent of the power law between the deformation length scale and total deformation developed over the season from 0.37 to 0.54 with an abrupt increase immediately after the early February storm, indicating a weakened ice cover with more free drift of the sea ice floes. Our results point to a general increase in deformation associated with the younger and thinner Arctic sea ice and to a potentially destructive role of winter storms. |
format |
Article in Journal/Newspaper |
author |
Itkin, P. Spreen, G. Cheng, B. Doble, M. Girard-Ardhuin, F. Haapala, J. Hughes, N. Kaleschke, L. Nicolaus, M. Wilkinson, J. |
spellingShingle |
Itkin, P. Spreen, G. Cheng, B. Doble, M. Girard-Ardhuin, F. Haapala, J. Hughes, N. Kaleschke, L. Nicolaus, M. Wilkinson, J. Thin ice and storms: Sea ice deformation from buoy arrays deployed during N-ICE2015 |
author_facet |
Itkin, P. Spreen, G. Cheng, B. Doble, M. Girard-Ardhuin, F. Haapala, J. Hughes, N. Kaleschke, L. Nicolaus, M. Wilkinson, J. |
author_sort |
Itkin, P. |
title |
Thin ice and storms: Sea ice deformation from buoy arrays deployed during N-ICE2015 |
title_short |
Thin ice and storms: Sea ice deformation from buoy arrays deployed during N-ICE2015 |
title_full |
Thin ice and storms: Sea ice deformation from buoy arrays deployed during N-ICE2015 |
title_fullStr |
Thin ice and storms: Sea ice deformation from buoy arrays deployed during N-ICE2015 |
title_full_unstemmed |
Thin ice and storms: Sea ice deformation from buoy arrays deployed during N-ICE2015 |
title_sort |
thin ice and storms: sea ice deformation from buoy arrays deployed during n-ice2015 |
publishDate |
2017 |
url |
http://hdl.handle.net/11858/00-001M-0000-002D-A6D0-9 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Basin Arctic Sea ice Svalbard |
genre_facet |
Arctic Basin Arctic Sea ice Svalbard |
op_source |
Journal of Geophysical Research: Oceans |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2016JC012403 http://hdl.handle.net/11858/00-001M-0000-002D-A6D0-9 |
op_doi |
https://doi.org/10.1002/2016JC012403 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
122 |
container_issue |
6 |
container_start_page |
4661 |
op_container_end_page |
4674 |
_version_ |
1774713639180173312 |