Brittle zone and air-hydrate formation in polar ice sheets

• Uchida Tsutomu

  Hokkaido National Industrial Research Institute

• Duval Paul

  Laboratoire de Glaciologie et Geophysique de l'Environnement

• Lipenkov Volodya Ya.

  The Arctic and Antarctic Research Institute

• Hondoh Takeo

  The Institute of Low Temperature Science, Hokkaido University

• Mae Shinji

  Faculty of Engineering, Hokkaido University

• Shoji Hitoshi

  Kitami Institute of Technology

抄録

Microscopic observations of air bubbles and air-hydrate crystals included in the Vostok ice cores, Antarctica, revealed that badly fractured ices were observed in the ice cores having high concentration of air bubbles. They also showed that the transformation of air bubbles to air-hydrate crystals reduced the chance of ice core fracture. In this paper, we suggest a fracture model of an ice core including air bubbles to discuss the depth dependence of ice core brittleness.

収録刊行物

• Memoirs of National Institute of Polar Research. Special issue

  Memoirs of National Institute of Polar Research. Special issue 49 298-305, 1994-03

  国立極地研究所

詳細情報

• CRID: 1571135651791332096
• NII論文ID: 110000010337
• NII書誌ID: AA00733561
• ISSN: 03860744
• 本文言語コード: en
• データソース種別:
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