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Spectral characteristics of low latitude aurorae on October 21,1989
https://doi.org/10.15094/00004106
https://doi.org/10.15094/00004106b8a8bbaa-2b75-40c3-a554-0c686363a7c1
名前 / ファイル | ライセンス | アクション |
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KJ00000036037 (1.1 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1991-06-01 | |||||
タイトル | ||||||
タイトル | Spectral characteristics of low latitude aurorae on October 21,1989 | |||||
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 | 10.15094/00004106 | |||||
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) | |||||
著者名(英) |
Takahasi,Tosiyasu
× Takahasi,Tosiyasu× Saito,Buniti× Kiyama,Yositaka |
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著者所属(英) | ||||||
en | ||||||
College of General Education, Niigata University/Faculty of Science, Niigata University/Faculty of Science, Niigata University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | During the main phase of geomagnetic storm on October 21,1989,the airglow spectrograph with a Schmidt camera of effective aperture F/0.7 observed distinct auroral spectra at low latitudes as in Niigata, geomagnetic latitude 27.7°, Japan. Although the aurora was not seen with the naked eye, it was observed by the method of ordinary airglow measurements, which required much longer exposure time. From the observed spectra, we can get the auroral components by subtracting a background spectrum which contains airglow and scattering city lights. We used a reference spectrum. which was constructed without aurorae under the same observing conditions of aurora spectrum. By subtracting the reference spectrum from that of observed spectrum, the following features emerged for the low latitude aurora on October 21,1989 : 1. Great enhancement in [OI] 6300 and 6364 A doublet, whose intensities at the zenith were 6.7 and 2.0 kR respectively, 2. Enhanced [OI] 5577 A emission of 1.4 kR at the zenith, and 3. no enhancements of N_2^+ 1.N. of 3914 and 4278 A, [NI] 5200 A, and of H Balmer alpha 6563 A. These facts might suggest that precipitating particles responsible for this aurora are electrons with energy as low as ∿ 10 eV, and not positive and/or neutral particles. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10756224 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Upper Atmosphere Physics 巻 4, p. 86-92, 発行日 1991-06 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |