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On the contraction of borehole at Mizuho Station, East Antarctica
https://nipr.repo.nii.ac.jp/records/1845
https://nipr.repo.nii.ac.jp/records/18457d423098-d058-453b-aef7-660d8c2452d3
名前 / ファイル | ライセンス | アクション |
---|---|---|
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1985-12-01 | |||||
タイトル | ||||||
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 | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Hasemi, Tatsuo
× Hasemi, Tatsuo× Takahashi, Akiyoshi× Ikegami, Koichi× Tanaka, Yoichi |
|||||
著者所属(英) | ||||||
en | ||||||
Institute of Geo-Technology/Institute of Geo-Technology/Institute of Geo-Technology/Institute of Geo-Technology | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Changes of borehole diameters at different depths down to 400m were estimated. Results are as follows : 1) Applying the flow law which was deduced from borehole closure observations by PATERSON (Rev. Geophys. Space Phys., 15,47,1977), the tertiary creep will start after about half of a year and the diameter of the hole will be 2/3 of the initial in a year and 1/10 after 2 years at a depth of 400m, provided that the shifting from the secondary to the tertiary occurs at total strain, ε=0.1. But the rate is 3 to 4 times larger when the flow law derived by MAE (J. Glaciol., 24,53,1979) from the flow observations at Mizuho Plateau is used. 2) The borehole closure rate has much difference depending on the flow law of ice. In order to induce a representative flow law of ice in Mizuho Plateau, the importance of borehole observation and technical development of boring is emphasized. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 39, p. 189-192, 発行日 1985-12 |