Government Industrial Development Laboratory
Department of Applied Physics, Faculty of Engineering, Hokkaido University
Institute of Low Temperature Science, Hokkaido University
Laboratoire de Glaciologie et Geophysique de l'Environnement, CNRS
The Arctic and Antarctic Research Institute
抄録(英)
Microscopic observations of air-hydrate crystals in Vostok ice cores, Antarctica, revealed that air-hydrate crystals acted as obstacles to the grain boundary migration. About half of the air-hydrate crystals were observed to be located on the grain boundaries; their volume concentrations were more than (10)^3 times larger than dust concentration (J. R. PETIT et al., Nature, 326,62,1990). The presence of air-hydrate crystals on grain boundary was considered to reduce effectively the ice grain growth rate. However, air-hydrate crystals did not result in marked changes in grain size associated with climate transitions.
雑誌書誌ID
AA10756213
雑誌名
Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
Effects of air-hydrate crystals on ice grain growth
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KJ00000035727
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概要
