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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

Multi‐Event Analysis of Plasma and Field Variations in Source of Stable Auroral Red (SAR) Arcs in Inner Magnetosphere During Non‐Storm‐Time Substorms

http://hdl.handle.net/2237/0002001671
http://hdl.handle.net/2237/0002001671
295caaf9-e698-487d-b567-c04f42abb418
名前 / ファイル ライセンス アクション
2020JA029081.pdf 2020JA029081.pdf (13.1 MB)
Item type itemtype_ver1(1)
公開日 2021-12-06
タイトル
タイトル Multi‐Event Analysis of Plasma and Field Variations in Source of Stable Auroral Red (SAR) Arcs in Inner Magnetosphere During Non‐Storm‐Time Substorms
言語 en
著者 Inaba, Yudai

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en Inaba, Yudai

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Shiokawa, Kazuo

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en Shiokawa, Kazuo

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Oyama, Shin‐ichiro

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Otsuka, Yuichi

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en Otsuka, Yuichi

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Connors, Martin

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Schofield, Ian

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Miyoshi, Yoshizumi

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Imajo, Shun

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Shinbori, Atsuki

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Gololobov, Artem Yu

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Kazama, Yoichi

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Wang, Shiang‐Yu

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Tam, Sunny W. Y.

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Chang, Tzu‐Fang

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Wang, Bo‐Jhou

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Asamura, Kazushi

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Yokota, Shoichiro

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Kasahara, Satoshi

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Keika, Kunihiro

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Hori, Tomoaki

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Matsuoka, Ayako

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Kasahara, Yoshiya

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Kumamoto, Atsushi

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Matsuda, Shoya

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Kasaba, Yasumasa

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Tsuchiya, Fuminori

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Shoji, Masafumi

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Kitahara, Masahiro

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Nakamura, Satoko

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Shinohara, Iku

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Spence, Harlan E.

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Reeves, Geoff D.

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Macdowall, Robert J.

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Smith, Charles W.

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Wygant, John R.

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Bonnell, John W.

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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 © 2021 American Geophysical Union
内容記述
内容記述 Stable auroral red (SAR) arcs are optical events with dominant 630.0-nm emission caused by low-energy electron heat flux into the topside ionosphere from the inner magnetosphere. SAR arcs are observed at subauroral latitudes and often occur during the recovery phase of magnetic storms and substorms. Past studies concluded that these low-energy electrons were generated in the spatial overlap region between the outer plasmasphere and ring-current ions and suggested that Coulomb collisions between plasmaspheric electrons and ring-current ions are more feasible for the SAR-arc generation mechanism rather than Landau damping by electromagnetic ion cyclotron waves or kinetic Alfvén waves. This work studies three separate SAR-arc events with conjunctions, using all-sky imagers and inner magnetospheric satellites (Arase and Radiation Belt Storm Probes [RBSP]) during non-storm-time substorms on December 19, 2012 (event 1), January 17, 2015 (event 2), and November 4, 2019 (event 3). We evaluated for the first time the heat flux via Coulomb collision using full-energy-range ion data obtained by the satellites. The electron heat fluxes due to Coulomb collisions reached ∼109 eV/cm2/s for events 1 and 2, indicating that Coulomb collisions could have caused the SAR arcs. RBSP-A also observed local enhancements of 7–20-mHz electromagnetic wave power above the SAR arc in event 2. The heat flux for the freshly detached SAR arc in event 3 reached ∼108 eV/cm2/s, which is insufficient to have caused the SAR arc. In event 3, local flux enhancement of electrons (<200 eV) and various electromagnetic waves were observed, these are likely to have caused the freshly detached SAR arc.
言語 en
内容記述タイプ Abstract
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
関連情報
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1029/2020JA029081
収録物識別子
収録物識別子タイプ PISSN
収録物識別子 2169-9380
書誌情報 en : Journal of Geophysical Research: Space Physics

巻 126, 号 4, p. e2020JA029081, 発行日 2021-04
ファイル公開日
日付 2021-12-06
日付タイプ Available
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