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Sea-ice thickness in the coastal northeastern Chukchi Sea from moored ice-profiling sonar


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タイトル: Sea-ice thickness in the coastal northeastern Chukchi Sea from moored ice-profiling sonar
著者: Fukamachi, Yasushi 著作を一覧する
Simizu, Daisuke 著作を一覧する
Ohshima, Kay I. 著作を一覧する
Eicken, Hajo 著作を一覧する
Mahoney, Andrew R. 著作を一覧する
Iwamoto, Katsushi 著作を一覧する
Moriya, Erika 著作を一覧する
Nihashi, Sohey 著作を一覧する
キーワード: sea ice
sea-ice geophysics
sea-ice growth and decay
発行日: 2017年10月 4日
出版者: Cambridge University Press
誌名: Journal of glaciology
巻: 63
号: 241
開始ページ: 888
終了ページ: 898
出版社 DOI: 10.1017/jog.2017.56
抄録: Time series ice-draft data were obtained from moored ice-profiling sonar (IPS), in the coastal northeastern Chukchi Sea during 2009/10. Time series data show seasonal growth of sea-ice draft, occasionally interrupted by coastal polynya. The sea-ice draft distribution indicates a slightly lower abundance of thick, deformed ice compared with the eastern Beaufort Sea. In January, a rapid increase in the abundance of thick ice coincided with a period of minimal drift indicating compaction again the coast and dynamical thickening. The overall mean draft and corresponding derived thickness are 1.27 and 1.38 m, respectively. The evolution of modal ice thickness observed can be explained mostly by thermodynamic growth. The derived ice thicknesses are used to estimate heat losses based on ERA-interim data. Heat losses from the raw, 1 s IPS data are ∼50 and 100% greater than those calculated using IPS data averaged over spatial scales of ∼20 and 100 km, respectively. This finding demonstrates the importance of subgrid-scale ice-thickness distribution for heat-loss calculation. The heat-loss estimate based on thin ice data derived from AMSR-E data corresponds well with that from the 1 s observed ice-thickness data, validating heat-loss estimates from the AMSR-E thin ice-thickness algorithm.
資料タイプ: article
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 深町 康


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