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ORIENTATION OF THE 700-M MIZUHO CORE AND ITS STRAIN HISTORY
https://doi.org/10.15094/00003530
https://doi.org/10.15094/00003530967b64a7-4d87-46fc-b19c-e65f7c9527de
名前 / ファイル | ライセンス | アクション |
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KJ00000767738 (1.2 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1987-09-01 | |||||
タイトル | ||||||
タイトル | ORIENTATION OF THE 700-M MIZUHO CORE AND ITS STRAIN HISTORY | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00003530 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
論文名よみ | ||||||
その他のタイトル | ORIENTATION OF THE 700-M MIZUHO CORE AND ITS STRAIN HISTORY | |||||
著者名よみ |
フジタ, シュウジ
× フジタ, シュウジ× ナカワ, マサヨシ× マエ, シンジ |
|||||
著者名(英) |
FUJITA, Shuji
× FUJITA, Shuji× NAKAWO, Masayoshi× MAE, Shinji |
|||||
著者所属(英) | ||||||
en | ||||||
Department of Applied Physics, Faculty of Engineering, Hokkaido University | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Applied Physics, Faculty of Engineering, Hokkaido University | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Applied Physics, Faculty of Engineering, Hokkaido University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Structual analyses of the core revealed that the ice fabric pattern as well as the shape of individual ice grains and air bubbles exhibited strong anisotropies. They were correlated with the stress conditions of the ice sheet around the station. This became possible by an estimation of the geographical orientation of the core through measurements of the natural remanent magnetization formed accidentally. It was found that ice grains and air bubbles were elongated in the direction of flow, which was identical with the direction of the tensile strain. Also, c-axes of the ice grains tended to orient perpendicular to the tensile axis, forming a vertical great girdle pattern, which is considered to have resulted from by the gradual rotation of the ice grains toward a plane normal to the tensile axis. The rotation of the grains was calculated with respect to the total strain, simulating a formation of the great girdle fabric pattern. By comparing the simulated fabric pattern with the measured pattern of the Mizuho core, the accumulated strain in the core ice was estimated at various depths. The total strain the core ice has experienced increased almost linearly with depth at a rate of about 20% per 100m. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10756213 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 巻 1, p. 122-131, 発行日 1987-09 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |