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Ground-based radar detection of the equatorward boundary of ion auroral oval in the dusk-midnight sector and its dynamical association with substorms
https://doi.org/10.15094/00006422
https://doi.org/10.15094/0000642229955d72-2917-4310-994e-138c711e0d2d
名前 / ファイル | ライセンス | アクション |
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KJ00004322111 (2.1 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2006-08-01 | |||||
タイトル | ||||||
タイトル | Ground-based radar detection of the equatorward boundary of ion auroral oval in the dusk-midnight sector and its dynamical association with substorms | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | auroral ionosphere, auroral substorms, particle precipitation, SuperDARN radar | |||||
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 | 10.15094/00006422 | |||||
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) | |||||
論文名よみ | ||||||
その他のタイトル | Ground-based radar detection of the equatorward boundary of ion auroral oval in the dusk-midnight sector and its dynamical association with substorms | |||||
著者名(英) |
Jayachandran,P.T.
× Jayachandran,P.T.× MacDougall,J.W.× Donovan,E.F. |
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著者所属(英) | ||||||
en | ||||||
Physics Department, University of New Brunswick/Department of Physics and Astronomy, University of Western Ontario/Department of Physics and Astronomy, University of Calgary, Calgary | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | One of the important boundaries of the auroral region in the dusk-midnight sector is the equatorward boundary of the ion precipitation. In this region, on average, the ion precipitation region is equatorward of the electron precipitation region and is important in the overall energy budget. There are ground and satellite based measurement techniques to detect this important boundary but many of these measurements lack the temporal and spatial coverage required to study the dynamical features of this boundaries relationship with substorms. In this paper a review of a new ground based radar technique to determine the boundary and its limitations are presented. The new radar method is used to study the substorm growth phase dynamics. It found that on average, the boundary is located more equatorward during substorms than during non substorms. This implies that magnetotail stretching is a necessary condition for substorms. It is also found that statically there is no difference in the location of the boundary for substorms and non substorms in the 18-19 hours magnetic local time sector. The equatorward expansion rate of the boundary shows clear distinction between substorms and non substorms: The equatorward expansion rate of the boundary is much lower during non substorms than during substorms. Implications of the results for substorm dynamics are also presented. | |||||
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 20, p. 63-75, 発行日 2006-08 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |