Effects of air-hydrate crystals on ice grain growth

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概要

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• 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.

• 国立極地研究所の論文

著者

• Hondoh Takeo

  Institute of Low Temperature Science, Hokkaido University

• Mae Shinji

  Department of Applied Physics, Hokkaido University

• Morimoto S

  National Institute Of Polar Research Organization Of Information And Systems

• Morimoto Shinji

  National Institute of Polar Research

• Uchida T

  Hokkaido National Industrial Research Institute

• Hondoh Takeo

  Institute Of Low Temperature Science Hokkaido University

• Uchida Tsutomu

  Government Industrial Development Laboratory

• Duval Paul

  Laboratoire de Glaciologie et Geophysique de l'Environnement, CNRS

• Lipenkov Volodya

  The Arctic and Antarctic Research Institute

• Mae Shinji

  Department Of Applied Physics Hokkaido University

• Mae Shinji

  Department Of Applied Physics Faculty Of Engineering Hokkaido University

• Duval Paul

  Laboratoire De Glaciologie Et Geophysique De L'environnement

• Duval Paul

  Laboratoire De Glaciologie Et De Geophysique De L'environnement

• Mae S

  Hokkaido Univ. Sapporo

• Hondoh Takeo

  The Institute Of Low Temperature Science Hokkaido University

• Hondoh T

  Hokkaido Univ. Hokkaido Jpn

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