Potassium alum and aluminum sulfate micro-inclusions in polar ice from Dome Fuji, East Antarctica
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概要
- 論文の詳細を見る
Water-soluble trace constituents affect the physicochemical properties of polar ice. Their structural distribution provides important insights into the formation history of ice and inclusions. We report the first finding of KAl(SO4)2·12H2O (potassium alum) and Al2(SO4)3·nH2O (aluminum sulfate) micro-inclusions in the Dome Fuji ice core, East Antartica, using a micro-Raman technique. Eutectic temperatures of these water-soluble species determined using thermal analysis were −0.4 °C for potassium alum and −8.0 °C for aluminum sulfate. Although the formation process of the aluminum-bearing sulfates remains unclear, the occurrence of these salts largely depends on ice depth.
著者
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Iizuka Yoshinori
Institute Of Low Temperature Science Pan-okhotsk Research Center Hokkaido University
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Hondoh Takeo
Institute Of Low Temperature Science Hokkaido University
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Horikawa Shinichiro
Institute Of Low Temperature Science Hokkaido University
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Motoyama Hideaki
National Inst. Of Polar Res. 10-3 Midori-cho Tachikawa-shi Tokyo 190-8518 Jpn
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Motoyama Hideaki
National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan.
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Ohno Hiroshi
National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan.
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Sakurai Toshimitsu
Institute of Low Temperature Science, Hokkaido University, N19 W8, Sapporo 060-0819, Japan.
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Horikawa Shinichiro
Institute of Low Temperature Science, Hokkaido University, N19 W8, Sapporo 060-0819, Japan.
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