Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1985-07-01 |
タイトル |
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言語 |
en |
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タイトル |
50MHz auroral doppler radar observations associated with Pc 5 geomagnetic pulsations |
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) |
Igarashi, Kiyoshi
Ogawa, Tadahiko
Kuratani, Yasukazu
Fujii, Ryoichi
Sato, Natsuo
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著者所属(英) |
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en |
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Radio Research Laboratories/Radio Research Laboratorie/Radio Research Laboratories/National Institute of Polar Research/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 |
Radio auroral echo oscillations associated with Pc 5 geomagnetic pulsations are investigated using the 50MHz doppler radar installed in 1982 at Syowa Station, Antarctica. First, it is found that Pc 5 radar echo pulsations occur most frequently around dawn and dusk hours but do not appear around noon and midnight. Then, the doppler power spectrum of the Pc 5 pulsating radio aurora is presented which indicates that the irregularities causing echo pulsations might be produced by the gradient-drift plasma instability in the disturbed E-region. It is also demonstrated by using the mean doppler velocity of the Pc 5 pulsating radio aurora that during the pulsations the north-south components of electric fields are far larger than the east-west components, being consistent with the Kelvin-Helmholtz instability hypothesis as a cause of Pc 5 geomagnetic pulsations. |
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 36,
p. 104-113,
発行日 1985-07
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