FLUCTUATION OF δ^O OF SURFACE SNOW WITH SURFACE HOAR AND DEPTH HOAR FORMATION UNDER RADIATIVE COOLING

元データ 国立極地研究所

概要

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.

著者

八久保 晶弘 北見工業大学未利用エネルギー研究センター
八久保 晶弘 北大低温研
Motoyama Hideaki National Institute Of Polar Research
Suzuki Keisuke Department of Environmental Sciences, Shinshu University
八久保 晶弘 北見工業大学
HACHIKUBO Akihiro Institute of Low Temperature Science, Hokkaido University
AKITAYA Eizi Institute of Low Temperature Science, Hokkaido University
Akitaya Eizi Institute Of Low Temperature Science Hokkaido University
Suzuki Keisuke Department Of Electrical And Electronic Engineering Niigata University
Suzuki Keisuke Department Of Chemistry Tokyo Institute Of Technology
Suzuki K Institute For Hydrospheric-atmospheric Sciences Nagoya University
Motoyama Hideaki National Inst. Of Polar Res. 10-3 Midori-cho Tachikawa-shi Tokyo 190-8518 Jpn
Suzuki Keisuke Department Of Chemistry Keio University
Suzuki Keisuke Department Of Environmental Sciences Faculty Of Science Shinshu University
Suzuki Keisuke Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Yamanashi University

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