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Direct observations of sea-ice thickness and brine rejection off Sakhalin in the Sea of Okhotsk

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タイトル: Direct observations of sea-ice thickness and brine rejection off Sakhalin in the Sea of Okhotsk
著者: Fukamachi, Yasushi 著作を一覧する
Shirasawa, Kunio 著作を一覧する
Polomoshnov, Anatoliy M. 著作を一覧する
Ohshima, Kay I. 著作を一覧する
Kalinin, Ervin 著作を一覧する
Nihashi, Sohey 著作を一覧する
Melling, Humfrey 著作を一覧する
Mizuta, Genta 著作を一覧する
Wakatsuchi, Masaaki 著作を一覧する
キーワード: Sea ice
Ice thickness
Polynyas
Time series
Ice-profiling sonar
Brine rejection
The Sea of Okhotsk
発行日: 2009年 6月15日
出版者: Elsevier Ltd.
誌名: Continental Shelf Research
巻: 29
号: 11-12
開始ページ: 1541
終了ページ: 1548
出版社 DOI: 10.1016/j.csr.2009.04.005
抄録: From December to June 2002-03, sea-ice and oceanic data were obtained from moorings near Sakhalin in the west central Okhotsk Sea. Ice draft measured by sonar reveals distinct periods of thin and thick ice. Thin-ice periods in January-March corresponded to offshore ice movement and increasing seawater salinity. The measured change in salinity corresponds well with that derived from heat-flux calculations using the observed ice thickness. Brine rejection from ice growing in a coastal polynya off northern Sakhalin is responsible for much of the observed salinity increase. The simultaneous observation of Dense shelf water (> 26.7σθ) suggests that this region is one possible source. The periods of thick-ice incursion are likely indicative of heavily deformed pack formed further north and drifting south with the current. The mean draft (1.95 m), thick-ice ratio, and keel frequency during these periods are close to values observed in the Beaufort Sea. Freshwater transport estimated from the observed ice thickness and velocity is larger than that of the Amur River discharge.
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/38838
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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