AN ATTEMPT AT DEFORMATION TESTS OF DEEP ICE CORE SAMPLES CONTAINING CLOUDY BANDS
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概要
- 論文の詳細を見る
We conducted detailed mechanical property investigations of deep polar ice core samples. In order to understand the effect of cloudy band structure on deformation of ice core samples, uniaxial compression tests were carried out by using the GRIP ice core containing cloudy bands. The uniaxial compression tests were performed under the conditions of constant strain rate (Type A) and constant load (Type B) at -15℃. The enhancement factor (Es) correlates with the schmid factor (F) that indicates c-axis orientation development with F less than 0.46. The Es of ice specimens with F larger than 0.46 showed large values (approximately 3 to 50) with significant data scatter. The straight lines were scratched on the surface of a few specimens and the changes of these line shapes were observed after compression tests. It is clearly shown that the specimens containing cloudy bands deform non-uniformly. Specimens with cloudy bands tend to deform easily, but there is no clear correlation between the Es and the number of cloudy bands.
- 国立極地研究所の論文
著者
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Watanabe Okitsugu
National Institute of Polar Research, Research Organization of Information and Systems
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Narita Hideki
Institute of Low Temperature Science Pan-Okhotsk Research Center, Hokkaido University
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宮本 淳
北海道大学低温科学研究所
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Hondoh Takeo
Institute of Low Temperature Science, Hokkaido University
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Shoji Hitoshi
Kitami Institute of Technology
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Miyamoto Atsushi
Kitami Institute of Technology
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Watanabe O
National Institute Of Polar Research Research Organization Of Information And Systems
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Watanabe Okitsugu
National Institute Of Polar Research
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Narita Hideki
Institute Of Low Temperature Science Pan-okhotsk Research Center Hokkaido University
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Narita Hideki
Institute Of Low Temperature Science Hokkaido University
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Watanabe Okitsusgu
National Institute of Polar Research
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Hondoh Takeo
Institute Of Low Temperature Science Hokkaido University
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MIYAMOTO Atsushi
Institute of Low Temperature Science, Hokkaido University
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CLAUSEN Henrik
Niels Bohr Institute, University of Copenhagen
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