2026-03-12T01:02:37Z https://nipr.repo.nii.ac.jp/oai

oai:nipr.repo.nii.ac.jp:00002234 2025-07-14T04:23:58Z 1:356:403

Brittle zone and air-hydrate formation in polar ice sheets Uchida, Tsutomu Duval, Paul Lipenkov, Volodya Ya. Hondoh, Takeo Mae, Shinji Shoji, Hitoshi P(論文) 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. departmental bulletin paper 1994-03 application/pdf Memoirs of National Institute of Polar Research. Special issue 49 298 305 AA00733561 https://nipr.repo.nii.ac.jp/record/2234/files/KJ00000012787.pdf https://nipr.repo.nii.ac.jp/records/2234 eng