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  1. F300 宇宙地球環境研究所
  2. F300a 雑誌掲載論文
  3. 学術雑誌

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
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
Takagi_et_al-2018-Geophysical_Research_Letters.pdf Takagi_et_al-2018-Geophysical_Research_Letters (1.8 MB)
Item type 学術雑誌論文 / Journal Article(1)
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

WEKO 89211

en Takagi, Yuki

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Shiokawa, Kazuo

× Shiokawa, Kazuo

WEKO 89212

en Shiokawa, Kazuo

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Otsuka, Yuichi

× Otsuka, Yuichi

WEKO 89213

en Otsuka, Yuichi

Search repository
Connors, Martin

× Connors, Martin

WEKO 89214

en Connors, Martin

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Schofield, Ian

× Schofield, Ian

WEKO 89215

en Schofield, Ian

Search repository
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
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
著者版フラグ
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