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Control factor of solar cycle variation of auroral kilometric radiation
https://doi.org/10.15094/00006361
https://doi.org/10.15094/00006361bea27df1-65c2-48ac-8a17-ab5c8b8476c7
名前 / ファイル | ライセンス | アクション |
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KJ00000048000 (5.0 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2003-09-01 | |||||
タイトル | ||||||
タイトル | Control factor of solar cycle variation of auroral kilometric radiation | |||||
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 | 10.15094/00006361 | |||||
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) |
Kumamoto,Atsushi
× Kumamoto,Atsushi× Ono,Takayuki× Iizima,Masahide× Oya,Hiroshi |
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著者所属(英) | ||||||
en | ||||||
Department of Geophysics, Graduate School of Science, Tohoku University/Department of Geophysics, Graduate School of Science, Tohoku University/Department of Geophysics, Graduate School of Science, Tohoku University/Department of Space Communications, Faculty of Engineering, Fukui University of Technology | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Solar cycle variations of auroral kilometric radiation (AKR) observed by the Akebono satellite have been compared with the variations of F10.7 and solar wind dynamic pressure. F10.7 and solar wind dynamic pressure show different solar cycle variations: F10.7 increases during solar maximum and decreases during solar minimum. Solar wind dynamic pressure suddenly increases in the declining phase of solar activity and gradually decreases. The pressure minimum occurs during solar maximum. Statistical analysis of the Akebono data has shown that AKR occurrence minimum occurs during solar maximum, however AKR occurrence maximum coincides not with solar wind dynamic pressure peak but with F10.7 minimum. Up-flowing ion (UFI) events and ambient plasma density, which are associated with generation conditions of AKR, also show similar behavior. They are dependent not on solar wind dynamic pressure but on F10.7. These results suggest the anti-correlation between discrete aurora and solar activities, which has been never recognized through the studies on secular variations of auroral phenomena mainly based on old auroral records obtained in mid-latitude regions. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11397422 | |||||
書誌情報 |
Advances in polar upper atmosphere research 巻 17, p. 48-59, 発行日 2003-09 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |