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Conjugate features of daytime absorption associated with specific changes in the solar wind observed by inter-hemispheric high-latitude imaging riometers
https://doi.org/10.15094/00006305
https://doi.org/10.15094/00006305a1533e1e-8f9c-4c3b-a8b1-a4c55a62c3b8
名前 / ファイル | ライセンス | アクション |
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KJ00000048045 (2.6 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2000-08-01 | |||||
タイトル | ||||||
タイトル | Conjugate features of daytime absorption associated with specific changes in the solar wind observed by inter-hemispheric high-latitude imaging riometers | |||||
言語 | ||||||
言語 | eng | |||||
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 | 10.15094/00006305 | |||||
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) | |||||
著者名(英) |
Nishino, Masanori
× Nishino, Masanori× Yamagishi, Hisao× Sato, Natsuo× Liu, Ruiyuan× Hu, Hongquao× Stauning, Peter× Holtet, Jan A. |
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著者所属(英) | ||||||
en | ||||||
Solar-Terrestrial Environment Laboratory, Nagoya University/National Institute of Polar Research/National Institute of Polar Research/Polar Research Institute of China/Wuhan University/Danish Meteorological Institute/The University of Oslo | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Imaging riometers at Ny-Alesund (NYA) and Danmarkshavn (DMH) in the Arctic and Zhongshan (ZHS) in Antarctica were used to examine conjugate features of daytime ionospheric absorption in the polar cusp/cleft for specific changes in solar wind plasma parameters and the interplanetary magnetic field (IMF). We observed absorption spikes in the afternoon (1300-1500 MLT) associated with a steep increase in the high solar wind dynamic pressure and a synchronized spike-type IMF excursion. Afternoon absorption was identified between the stations at NYA and ZHS. The absorption extended longitudinally over a few hundred km, in a narrow arc about 50 km wide in latitude. Magnetic field compression associated with the steep pressure increase may stimulate substorm electrons drifting eastward from the nightside magnetosphere through the inner edge of the LLBL. We also observed absorption spikes around noon that were associated with a sudden pressure increase and a synchronized IMF excursion after a prolonged quiet state. The noon absorption was identified simultaneously at the DMH and ZHS inter-hemispheric stations. It extended longitudinally for several hundred km, including a small gap of about 50 km, and for over 400 km wide in latitude. Magnetic field compression associated with the sudden pressure increase may stimulate a population of magnetospheric electrons located at the equatorward boundary of the cusp/cleft. | |||||
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 14, p. 76-92, 発行日 2000-08 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |