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Behavior of air molecules in polar ice sheets (review)
https://nipr.repo.nii.ac.jp/records/2473
https://nipr.repo.nii.ac.jp/records/247328e4e106-b228-4e11-bccc-377315934d0e
名前 / ファイル | ライセンス | アクション |
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KJ00000011457 (117.6 kB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2003-03-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Behavior of air molecules in polar ice sheets (review) | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | clathrate hydrate | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | molecular diffusion | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ice sheet | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | paleoatmosphere | |||||
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 | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Ikeda-Fukazawa, Tomoko
× Ikeda-Fukazawa, Tomoko× Hondoh, Takeo |
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著者所属(英) | ||||||
en | ||||||
Institute of Low Temperature Science, Hokkaido University | ||||||
著者所属(英) | ||||||
en | ||||||
Institute of Low Temperature Science, Hokkaido University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Ancient atmospheric gases are trapped in polar ice sheets. The gas molecules are stored in air bubbles at shallower depth. The air bubbles are gradually compressed with depth and begin to transform into clathrate hydrates below a level at which the hydrostatic pressure becomes greater than the formation pressure of the phase of air clathrate hydrate. Air bubbles and clathrate hydrates coexist in the deep ice over a long period of time. Significant gas fractionations during the transition process have been found from measurements of the depth profile of the N2/O2 composition ratios in clathrate hydrates and air bubbles in the Dome-Fuji ice and the Vostok ice. Analyzing the molecular diffusion process in ice, the gas fractionation is attributed to a larger mass flux of O2 molecules from air bubbles to clathrate hydrates through the ice matrix than that of N2. We review the process of gas fractionation caused by the formation of clathrate hydrates in polar ice sheets. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 57, p. 178-186, 発行日 2003-03 |