| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2007-06-13 |
| タイトル |
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タイトル |
Mechanical anisotropy of deep ice core samples by uniaxial compression tests (scientific paper) |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源 |
http://purl.org/coar/resource_type/c_6501 |
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タイプ |
journal article |
| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
Miyamoto, Atsushi
Shimohara, Kimiko
Hyakutake, Kinji
Shoji, Hitoshi
Narita, Hideki
Hondoh, Takeo
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Mechanical anisotropy of ice core samples has been observed in various uniaxial compression tests. The c-axis orientation distribution is the primary influence on the mechanical behavior of ice cores. A strong single-maximum fabric pattern is observed in the deep parts of the ice sheet. In this region, polycrystalline ice is very hard along the vertical axis; however, it easily shears along the horizontal plane. Thus, by acquiring the distribution of c-axis orientations throughout the ice sheet, the mechanical anisotropy of ice sheet flow behavior can be understood. Analysis of fabric measurements on the Dye 3, GRIP, and Dome F ice cores suggests that the c-axis orientation distribution depends primarily on vertical strain. Therefore, if the ice thickness at some point in the ice sheet is known, it should be possible to predict the distribution of c-axis orientations at that depth. Uniaxial compression tests were carried out along various directions of the Dye 3, GRIP, and Dome F ice cores. A contour map of mechanical anisotropy was then made to relate the compression direction to the vertical strain. This clarified the flow enhancement factor in every compression direction at a given vertical strain. |
| 書誌情報 |
Memoirs of National Institute of Polar Research, Special Issue
巻 57,
p. 168-177,
発行日 2003-03
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| 権利 |
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|
権利情報 |
NATIONAL INSTITUTE OF POLAR RESEARCH, A. Miyamoto, K. Shimohara, K. Hyakutake, H. Shoji, H. Narita, T. Hondoh, Memoirs of National Institute of Polar Research. Special issue, 57, 2003, 168-177 |
| フォーマット |
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内容記述タイプ |
Other |
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内容記述 |
application/pdf |
| 出版者 |
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出版者 |
国立極地研究所 |
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言語 |
ja |
| 著者版フラグ |
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言語 |
en |
|
値 |
publisher |
| 出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
4434.pdf (3.5 MB)
