2000 Fiscal Year Annual Research Report

EISCATレーダーを用いた国際共同実験による超高層大気の研究

Research Project

Project/Area Number	12373002
Research Institution	Nagoya University
Principal Investigator	藤井良一名古屋大学, 太陽地球環境研究所, 教授 (00132712)
Co-Investigator(Kenkyū-buntansha)	BUCHERT S. C 名古屋大学, 太陽地球環境研究所, 助教授 (70293719) 野澤悟徳名古屋大学, 太陽地球環境研究所, 助手 (60212130) 小川忠彦名古屋大学, 太陽地球環境研究所, 教授 (60271607) 渡部重十北海道大学, 大学院・理学研究科, 教授 (90271577) 前田佐和子京都女子大学, 現代社会学部, 教授 (00199613)
Keywords	EISCATレーダー / ESR / 磁気圏 / 電離圏 / 熱圏 / 中間圏 / 太陽風 / 極冠域
Research Abstract	本研究課題の目的は、スカンジナヴィア北部とスヴァールバル島に設置されている世界で第一級の欧州非干渉散乱(EISCAT)レーダーを中心に用いて、極冠域からオーロラ帯、サブオーロラ帯にまでいたる広い領域にまたがった実験観測を行い、太陽風、磁気圏から電離圏、熱圏、中間圏における物理・化学課程の総合的研究を行うことにある。平成8年度EISCAT科学協会に正式加盟した日本は、他の加盟国(英、仏、独、ノルウェー、スウェーデン、フィンランド)と同じく独自のレーダー使用時間を有し、日本独自の実験研究を実施してきている。この特別実験実施のための情報の収集および経験の蓄積、EISCATレーダーにより取得されたデータの収集、そのデータ解析のためのソフトウエアの整備、およびそれらの共同研究者への公開も進めている。今年度は、2000年7月にESRにてイオン加熱に伴うIS異常スペクトルの解明のための特別実験、9月にトロムソにおいて電離圏加熱装置を用いた電離圏加熱実験、11月から12月にかけて、宇宙研ロケット実験に呼応した、ESRおよびEISCAT VHFレーダーを用いた特別実験などを実施した。これらを通して、上記目的の解明のために研究を進めている。また、EISCATレーダーにより取得されたデータ(raw data)コピーのために随時EISCATのデータセンターであるトロムソサイトに人員を派遣している。そして、EISCATレーダーとの同時観測によるオーロラ降下粒子エネルギースペクトルの研究のために、2001年2月に光学観測装置(4波長フォトメーター)をEISCATトロムソサイトにおいて設置した。

Research Products
(16 results)

All Other

All Publications (16 results)

[Publications] Shibata.Takashi: "Ion composition in theauroral lower F-region inferred from residuals of ion temperature profilesobserved with EISCAT"Advanges Space Research. 25(1). 201-210 (2000)
[Publications] Fujii.Ryoichi: "Energy coupling between the magnetosphere.ionosphere and thermosphere"Advanges Space Research. 25(1). 213-218 (2000)
[Publications] Kosch,M.J.: "A comparison of thermospherie winds and temperatures from Fabry-Perot interferometer and EISCAT radar measurements with models."Advanges Space Research. 26(6). 979-984 (2000)
[Publications] Ogawa.Yasunobu: "Simultaneous EISCAT Svalbard and VHF radar observations of ion upflows at different aspect angles"Geophysical Research Letters. 27. 81-84 (2000)
[Publications] Endo.Minoru: "Ion outflow and inflow at the topside ionosphere observed by he EISCAT VHF radar"Annales Geophysicae. 18. 170-181 (2000)
[Publications] Kikuchi.Takashi: "Instantaneous penetration of electric fields associated with Region -1 and 2 field-aligned currents during a substorm as deduced from the EISCAT and the polar and equatorial magnetometer arrays"Journal of Geophysical Research. (In press).
[Publications] Yoshida.Naofumi: "Coordinated Akebono and EISCAT observations of suprathermal ion outflows in the nightside inverted-V region"Journal of Atmospheric Solar-Terrestrial Physics. 62. 449-465 (2000)
[Publications] Nozawa.Satonori: "A case study of the auroral E region neutral wind on a quiet summer day : Comparison of three methods of the EISCAT UHF radar for deriving the E region wind."Radio Science. 35. 845-863 (2000)
[Publications] Maeda.Sawako: "Meridional Gradients of the Neutral Temperature in the Dayside Summer E-Region"Atmospheric Research. 14. 128-137 (2000)
[Publications] Van Eyken: "First measurements of tidal modes in the lower thermosphere by the EISCAT Svalbard Radar"Geophysical Research Letters. 27. 931-934 (2000)
[Publications] Saito.Susumu: "Effects of kappa distribution electrons on incoherent scatter spectra"Annales Geophysicae. 18. 1216-1223 (2000)
[Publications] Oyama.Shinichiro: "Effects of atmospheric oscillations on the field-aligned ion motions in the polar F-region"Annales Geophysicae. 18. 1154-1163 (2000)
[Publications] Ogawa.Yasunobu: "Frequency dependent power fluctuations : a feature of the ESR system or physical ? "Annales Geophysicae. 18. 1224-1230 (2000)
[Publications] Ogawa.Tadahiko: "Plasma density supression process around the cusp revealed by simultaneous CUTLASS and EISCAT Svalbard radar observations"Journal of Geophysical Research. (In press). (2000)
[Publications] Saito.Susumu: "Observation of isotropic electron temperature in the turbulent E region"Annales Geophysicae. 19. 11-15 (2001)
[Publications] Oyama.Shinichiro: "Generation of atmospheric gravity waves associated with auroral activity in the polar F-region"Journal of Geophysical Research. (In press). (2001)

2000 Fiscal Year Annual Research Report

EISCATレーダーを用いた国際共同実験による超高層大気の研究

Principal Investigator

藤井 良一 名古屋大学, 太陽地球環境研究所, 教授 (00132712)

Research Products

[Publications] Shibata.Takashi: "Ion composition in theauroral lower F-region inferred from residuals of ion temperature profilesobserved with EISCAT"Advanges Space Research. 25(1). 201-210 (2000)

[Publications] Fujii.Ryoichi: "Energy coupling between the magnetosphere.ionosphere and thermosphere"Advanges Space Research. 25(1). 213-218 (2000)

[Publications] Kosch,M.J.: "A comparison of thermospherie winds and temperatures from Fabry-Perot interferometer and EISCAT radar measurements with models."Advanges Space Research. 26(6). 979-984 (2000)

[Publications] Ogawa.Yasunobu: "Simultaneous EISCAT Svalbard and VHF radar observations of ion upflows at different aspect angles"Geophysical Research Letters. 27. 81-84 (2000)

[Publications] Endo.Minoru: "Ion outflow and inflow at the topside ionosphere observed by he EISCAT VHF radar"Annales Geophysicae. 18. 170-181 (2000)

[Publications] Kikuchi.Takashi: "Instantaneous penetration of electric fields associated with Region -1 and 2 field-aligned currents during a substorm as deduced from the EISCAT and the polar and equatorial magnetometer arrays"Journal of Geophysical Research. (In press).

[Publications] Yoshida.Naofumi: "Coordinated Akebono and EISCAT observations of suprathermal ion outflows in the nightside inverted-V region"Journal of Atmospheric Solar-Terrestrial Physics. 62. 449-465 (2000)

[Publications] Nozawa.Satonori: "A case study of the auroral E region neutral wind on a quiet summer day : Comparison of three methods of the EISCAT UHF radar for deriving the E region wind."Radio Science. 35. 845-863 (2000)

[Publications] Maeda.Sawako: "Meridional Gradients of the Neutral Temperature in the Dayside Summer E-Region"Atmospheric Research. 14. 128-137 (2000)

[Publications] Van Eyken: "First measurements of tidal modes in the lower thermosphere by the EISCAT Svalbard Radar"Geophysical Research Letters. 27. 931-934 (2000)

[Publications] Saito.Susumu: "Effects of kappa distribution electrons on incoherent scatter spectra"Annales Geophysicae. 18. 1216-1223 (2000)

[Publications] Oyama.Shinichiro: "Effects of atmospheric oscillations on the field-aligned ion motions in the polar F-region"Annales Geophysicae. 18. 1154-1163 (2000)

[Publications] Ogawa.Yasunobu: "Frequency dependent power fluctuations : a feature of the ESR system or physical ? "Annales Geophysicae. 18. 1224-1230 (2000)

[Publications] Ogawa.Tadahiko: "Plasma density supression process around the cusp revealed by simultaneous CUTLASS and EISCAT Svalbard radar observations"Journal of Geophysical Research. (In press). (2000)

[Publications] Saito.Susumu: "Observation of isotropic electron temperature in the turbulent E region"Annales Geophysicae. 19. 11-15 (2001)

[Publications] Oyama.Shinichiro: "Generation of atmospheric gravity waves associated with auroral activity in the polar F-region"Journal of Geophysical Research. (In press). (2001)

藤井良一名古屋大学, 太陽地球環境研究所, 教授 (00132712)