Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1982-12-01 |
タイトル |
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言語 |
en |
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タイトル |
Observations of an atmospheric gravity wave by shear instability in katabatic wind at Mizuho Station, East Antarctica |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
著者名(英) |
Kobayashi, Shun'ichi
Ishikawa, Nobuyoshi
Ohata, Tetsuo
Kawaguchi, Sadao
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著者所属(英) |
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en |
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The Institute of Low Temperature Science, Hokkaido University/The Institute of Low Temperature Science, Hokkaido University/Water Research Institute, Nagoya University/National Institute of Polar Research |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
Measurements were made of vertical wind speed components, using two sonic anemothermometers on the snow surface at Mizuho Station in 1980 by the present authors who were members of the 21st Japanese Antarctic Research Expedition (JARE-21). The two anemothermometers were mounted at the fixed heights of 3m and 30m on a 30-m-high micrometeorological tower. The existence of shear instability (Kelvin-Helmholtz) waves with period of about 20s was revealed as a result. The maximum aplitude of the K-H waves was found when the surface layer had a local gradient Richardson number smaller than 0.25; the instability regime was in agreement with DRAZIN's criterion (J. Fluid. Mech., 4,214,1958). Such gravity waves were observed when a strong surface inversion was progressing above the snow surface after the katabatic wind had been disturbed by a synoptic scale disturbance. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA00733561 |
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue
巻 24,
p. 46-56,
発行日 1982-12
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