Sea ice variation in Luetzow-Holmbukta, Antarctica, during the last fifty years
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- USHIO Shuki
- National Institute of Polar Research, Research Organization of Information and Systems
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- WAKABAYASHI Hiroyuki
- Japan Aerospace Exploration Agency, Marunouchi Kitaguchi BLDG. Now at Department of Computer Science, College of Engineering, Nihon University
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- NISHIO Fumihiko
- Center for Environmental Remote Sensing, Chiba University
Bibliographic Information
- Other Title
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- 過去50年間にわたる南極リュツォ・ホルム湾定着氷の変動
- カコ 50ネンカン ニ ワタル ナンキョク リュツォ ホルムワン テイチャクヒョウ ノ ヘンドウ
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Description
Satellite images obtained from Lützow-Holmbukta (Lützow-Holm Bay; around 69°S, 38°E), Antarctic, have revealed frequent occurrences of ice-breakup events since the 1980s. Such unstable conditions continued for several to ten-odd years, and its variability coincides well with the characteristics of snow accumulation patterns on sea ice; in other words, breakups are often observed during periods of less snow. In contrast, during the 1950s-70s, landfast ice seems to have been extremely stable, judging from the appearance of a long glacier tongue flowing into the fast-ice field. Expansion and contraction of the floating ice tongue probably depends on its surrounding fast-ice condition; therefore the unstable sea-ice condition for the last two decades has shortened the ice tongue. A decrease in the snow cover on sea ice and warm periods of summer-autumn led to the weakening of the landfast ice as the melt season progressed; broken floes were then transported offshore by the prevailing southerly winds.
Journal
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- Journal of the Japanese Society of Snow and Ice
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Journal of the Japanese Society of Snow and Ice 68 (4), 299-305, 2006
The Japanese Society of Snow and Ice
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Details 詳細情報について
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- CRID
- 1390282681438995328
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- NII Article ID
- 10018013700
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- NII Book ID
- AN00131221
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- ISSN
- 18836267
- 03731006
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- NDL BIB ID
- 8043645
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed