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Feedback and Ballooning Instabilities in the Magnetosphere‐Ionosphere Coupling
http://hdl.handle.net/2237/00033210
http://hdl.handle.net/2237/000332101c2e052a-5620-4fa5-b1ff-4e424b0a8129
名前 / ファイル | ライセンス | アクション |
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2020GL088233 (9.1 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2020-12-17 | |||||
タイトル | ||||||
タイトル | Feedback and Ballooning Instabilities in the Magnetosphere‐Ionosphere Coupling | |||||
言語 | en | |||||
著者 |
Watanabe, T.‐H.
× Watanabe, T.‐H. |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | © 2020 American Geophysical Union | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | magnetosphere | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ionosphere | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Alfven waves | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ballooning instability | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | aurora | |||||
抄録 | ||||||
内容記述 | A unified model for the feedback and ballooning instabilities in the magnetosphere‐ionosphere (M‐I) coupling is developed by means of the reduced magnetohydrodynamic and two‐fluid equations, involving the local current closure and the ionospheric conductivity change in a scale of auroral fine structures, self‐consistently. In a low pressure gradient case, the Alfvén harmonics are destabilized through the feedback mechanism, while the ballooning instability appears if the magnetospheric pressure gradient exceeds a critical value. Transition of the dominant instability between the feedback and ballooning modes is brought by change of the normalized pressure gradient or the convection electric field in the magnetosphere. The obtained results imply a variety of appearance of auroral arcs and beads in the M‐I coupling system. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
内容記述 | ||||||
内容記述 | ファイル公開:2020-12-28 | |||||
言語 | ja | |||||
内容記述タイプ | Other | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | Wiley | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1029/2020GL088233 | |||||
ISSN(print) | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0094-8276 | |||||
書誌情報 |
en : Geophysical Research Letters 巻 47, 号 12, p. e2020GL088233, 発行日 2020-06-28 |
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著者版フラグ | ||||||
値 | publisher |