JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
48704000.pdf1.08 MB
titleConclusion on the E region electron temperature derived from the mid latitude sporadic E layer study
Other Title中緯度スポラディックE層研究から誘導されたE層の電子温度についての結論
Author(jpn)小山 孝一郎; 日比野 和基; 森 弘隆
Author(eng)Oyama, Koichiro; Hibino, Kazuki; Mori, Hirotaka
Author Affiliation(jpn)宇宙航空研究開発機構 宇宙科学研究本部; 東京大学 理学部; 情報通信研究機構
Author Affiliation(eng)Japan Aerospace Exploration Agency Institute of Space and Astronautical Science; University of Tokyo Department of Science; Radio Communications Research Laboratory
Issue Date2005-03-31
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication date2005-03-31
AbstractElectron temperature in the sporadic E layer was measured with a Glass-sealed Langmuir probe at mid latitude station in Japan in the framework of the SEEK (Sporadic E Experiment over Kyushu) - two campaign which was conducted in August 2002, Important findings are twofold (1) Ne and Te vary in the opposite sense in the height range of 100 - 108 km and Te in the Es layer is lower than that of ambient plasma, (2) Te in these height ranges is higher than the possible range of neutral temperature. These findings strongly suggest either that the heat source that elevates Te much higher than possible Tn is still missing at around 100 km, though the most strong candidate is vibrationally excited molecular nitrogen, or that the physical parameter values which are used for the current theory on electron temperature are not proper.
DescriptionJAXA Research and Development Report
Keywordssporadic E layer; ionospheric electron density; electron temperature; Langmuir probe; rocket sounding; molecular excitation; mid-latitude ionosphere; スポラディックE層; 電離層電子密度; 電子温度; Langmuirプローブ; ロケット観測; 分子励起; 中緯度電離層
Document TypeTechnical Report
JAXA Category研究開発報告
Report NoJAXA-RR-04-047E

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