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Statistical Analysis of SAR Arc Detachment From the Main Oval Based on 11-Year, All-Sky Imaging Observation at Athabasca, Canada
http://hdl.handle.net/2237/00029436
5faf644b-4e06-4954-9a4e-24f9007f1313
名前 / ファイル | ライセンス | アクション | |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-03-07 | |||||
タイトル | ||||||
タイトル | Statistical Analysis of SAR Arc Detachment From the Main Oval Based on 11-Year, All-Sky Imaging Observation at Athabasca, Canada | |||||
言語 | en | |||||
著者 |
Takagi, Yuki
× Takagi, Yuki× Shiokawa, Kazuo× Otsuka, Yuichi× Connors, Martin× Schofield, Ian |
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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 | © 2018 American Geophysical Union | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | SAR arc detachment | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ring current | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | plasmasphere | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | substorm | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | magnetic storm | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | aurora | |||||
抄録 | ||||||
内容記述 | We report the first statistical analysis of stable auroral red (SAR) arc detachments from the main auroral oval, using 630‐nm all‐sky cooled‐Charge Coupled Device images obtained at Athabasca (magnetic latitude = 61.7°N), Canada. SAR arc detachments from the main oval can be an important way of monitoring the characteristics of ring current particle injection in the inner magnetosphere. We analyzed all‐sky images obtained for 11 years from 2006 to 2016 and found 163 SAR arc detachment events. The SAR arc detachments tend to occur in the premidnight sector, indicating the ring current ion drift to the dusk sector. The SAR arc detachments also tend to occur at the beginning of the substorm recovery phase, suggesting that the SAR arcs detach from the main oval as the main auroral oval returns to higher latitudes. The equatorward velocities of detached SAR arcs are from −100 m/s (poleward) to +200 m/s (equatorward), corresponding to magnetospheric electric fields from −1 to +2 mV/m. | |||||
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:2019-05-16 | |||||
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 | |||||
関連識別子 | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1029/2018GL079615 | |||||
ISSN(print) | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0094-8276 | |||||
ISSN(Online) | ||||||
収録物識別子タイプ | EISSN | |||||
収録物識別子 | 1944-8007 | |||||
書誌情報 |
en : Geophysical Research Letters 巻 45, 号 21, p. 11,539-11,546, 発行日 2018-05-16 |
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著者版フラグ | ||||||
値 | publisher |