Brittle zone and air-hydrate formation in polar ice sheets

Title Brittle zone and air-hydrate formation in polar ice sheets
Publication Type
Journal Article
Year
1994
Author(s) Tsutomu Uchida , Paul Duval, Volodya Ya Lipenkov, Takeo Hondoh, Shinji Mae, Hitoshi Shoji
Journal/ Publication
Memoirs of National Institute of Polar Research. Special issue 49
Pagination
298-305
ISSN
03860744
Abstract

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.

File
URL
Special Collections International Workshop on Ice Drilling Technology Series, 4th International Workshop on Ice Drilling Technology
Categories Brittle Ice
Citation Tsutomu Uchida , Paul Duval, Volodya Ya Lipenkov, Takeo Hondoh, Shinji Mae, Hitoshi Shoji ( 1994 ) Brittle zone and air-hydrate formation in polar ice sheets. Memoirs of National Institute of Polar Research. Special issue 49 , 298-305 .
Lead Author
Tsutomu Uchida