Fluctuation of δ^<18>O of surface snow with surface hoar and depth hoar formation under radiative cooling
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- HACHIKUBO A.
- Institute of Low Temperature Science, Hokkaido University
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- MOTOYAMA Hideaki
- National Institute of Polar Research
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- SUZUKI Keisuke
- Department of Environmental Sciences, Faculty of Science, Shinshu University
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- AKITAYA Eizi
- Institute of Low Temperature Science, Hokkaido University
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説明
δ^<18>O and major ions of the snow surface layer were measured during hoarfrost formation. In the nighttime, δ^<18>O decreased when surface hoar and depth hoar crystals formed above and beneath the snow surface, respectively, while δ^<18>O increased due to evaporation in the daytime. These results suggested that H_2^<16>O was enriched by condensation of the hoar crystals, whereas H_2^<18>O was concentrated on the snow surface by the evaporation of light H_2O to the atmosphere. Concentrations of major ions were observed to change as well according to condensation and evaporation of water vapor. δ^<18>O of hoar crystals condensed on March 5 to 6 was estimated to be approximately 5‰ lower than that of the original surface layer.
収録刊行物
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- Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
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Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 11 94-102, 1997
国立極地研究所
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詳細情報 詳細情報について
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- CRID
- 1570854176934043136
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- NII論文ID
- 110001030912
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- NII書誌ID
- AA10756213
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- ISSN
- 09142037
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- 本文言語コード
- en
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- データソース種別
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- CiNii Articles