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Dynamical Behaviors of Snow Particles in the Saltation Layer
https://nipr.repo.nii.ac.jp/records/1187
https://nipr.repo.nii.ac.jp/records/118710f8be2d-845f-4c1b-8409-65dbe98ed427
名前 / ファイル | ライセンス | アクション |
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KJ00000011713 (1.4 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||||||
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公開日 | 1981-10-01 | |||||||||
タイトル | ||||||||||
言語 | en | |||||||||
タイトル | Dynamical Behaviors of Snow Particles in the Saltation Layer | |||||||||
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) |
Araoka, Kuniaki
× Araoka, Kuniaki
× Maeno, Norikazu
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著者所属(英) | ||||||||||
en | ||||||||||
The Institute of Low Temperature Science, Hokkaido University | ||||||||||
著者所属(英) | ||||||||||
en | ||||||||||
The Institute of Low Temperature Science, Hokkaido University | ||||||||||
抄録(英) | ||||||||||
内容記述タイプ | Other | |||||||||
内容記述 | A photographic technique was developed to analyze dynamical behaviors of saltating particles in blowing snow. Each photograph taken with this technique can give information of trajectories of flying snow particles as well as their velocities and accelerations at each height. The analyses have shown that horizontal drag the surrounding air flow exerts on saltating particles is of Stokes type and the drag coefficient C_D can be represented as C_D=N/Re where Re is the Reynolds number and N is numerical constant ranging from 0.6 to 9. As for vertical motions a substantial downward force was found to act on a snow particle at the time of both its ascent and descent; Ascending snow particles did not reach the maximum height <υ_0>^2/2g where υ_0 and g are respectively the initial vertical velocity and the acceleration of gravity, and the maximum heights measured were smaller than those calculated by taking account of drag due to the surrounding air. | |||||||||
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 19, p. 253-263, 発行日 1981-10 |