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The reduction of chloride ion concentration in basal ice near Hamna Icefall, East Antarctica
https://doi.org/10.15094/00002934
https://doi.org/10.15094/0000293457245516-94a7-4b09-87ac-39c659fc8566
名前 / ファイル | ライセンス | アクション |
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KJ00002364421 (820.8 kB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2001-11-01 | |||||
タイトル | ||||||
タイトル | The reduction of chloride ion concentration in basal ice near Hamna Icefall, East Antarctica | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00002934 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
記事種別(英) | ||||||
en | ||||||
Scientific Note | ||||||
論文名よみ | ||||||
その他のタイトル | The reduction of chloride ion concentration in basal ice near Hamna Icefall, East Antarctica | |||||
著者名よみ |
イイズカ, ヨシノリ
× イイズカ, ヨシノリ× サタケ, ヒロシ× ワタナベ, オキツグ |
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著者名(英) |
Iizuka, Yoshinori
× Iizuka, Yoshinori× Satake, Hiroshi× Watanabe, Okitsugu |
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著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Environmental Chemistry and Biology, Toyama University | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The present paper mainly discusses chloride ions (Cl^-) in debris-laden basal ice near Hamna Icefall, Queen Maud Land, East Antarctica. The basal ice consists of alternating layers of bubble-free and bubbly ice of the order of mm to cm in thickness. Detailed analyses of Cl^- and stable isotopes (δ^<18>O and δD) on the alternating layers were performed. The Cl^- concentrations in the bubble-free ice layers and in the bubbly ice layers whose isotopic fluctuations decrease from neighboring bubble-free ice layers are reduced compared to those in the bubbly ice layers having quasi-neutral values on the isotopic profile. The reduction of Cl concentration in frozen ice compared to that in pre-freezing water was also observed from an experiment on ion fractionation by freezing. These results suggest that the bubble-free ice layers and the bubbly ice layers whose isotopic fluctuation is decreased from that in neighboring bubble-free ice layers were formed by melt-refreezing processes. The reduction of Cl concentration in the basal ice is considered to be an indicator to distinguish whether the basal ice has experienced melt-refreezing or not. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA1129795X | |||||
書誌情報 |
Polar meteorology and glaciology 巻 15, p. 107-113, 発行日 2001-11 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |