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2017 Fiscal Year Annual Research Report

窒素分子イオン共鳴散乱ライダーが伐拓く電離圏組成研究

Research Project

Project/Area Number 16H06021
Research InstitutionThe University of Electro-Communications

Principal Investigator

津田 卓雄  電気通信大学, 大学院情報理工学研究科, 助教 (90444421)

Project Period (FY) 2016-04-01 – 2020-03-31
Keywords共鳴散乱ライダー / 電離圏組成 / 大気組成
Outline of Annual Research Achievements

最新鋭の波長可変ライダーに追加の拡張システムを開発/投入することで電離圏 (高度100-300 km) の窒素分子イオン (N2+) のライダー観測を実現させ, 有効な観測手段の欠如のために理解が遅れている電離圏組成研究の新展開に資することを目指す. 更に, 窒素原子イオン(N+), カルシウムイオン (Ca+) など, その他の電離圏組成を対象とする新たなライダー観測への展開を視野に入れつつ, 新技術や新観測手法の開発への取組みにも挑戦する.

南極昭和基地における波長可変ライダーの試験観測を継続している. 試験的観測データを蓄積してる途中であるが, 初期的なデータ解析にも着手している. 一方で, 更なる展開として, カルシウムイオン (Ca+) を対象とする新しいライダーシステムの基本構想についての検討を進めた. 新システムでは, LDレーザーを送信レーザーに採用することで安定かつ高出力の送信レーザー系を構築し, 現システムを超える性能を目指す予定である. 今年度は基本デザインを進め, 次年度から基礎技術の開発に着手することを予定している.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

試験観測は順調である. 加えて, 新システムへの取組みにも着手している.

Strategy for Future Research Activity

試験データの解析を重点的に行う. 並行して, 新システムの基礎開発に着手する.

  • Research Products

    (42 results)

All 2018 2017

All Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (37 results) (of which Int'l Joint Research: 25 results,  Invited: 5 results)

  • [Journal Article] Survey of conditions for artificial aurora experiments at EISCAT Tromso using dynasonde data2018

    • Author(s)
      T. T. Tsuda, M. T. Rietveld, M. J. Kosch, S. Oyama, K. Hosokawa, S. Nozawa, T. Kawabata, A. Mizuno, and Y. Ogawa
    • Journal Title

      Earth Planets Space

      Volume: 70 Pages: 40

    • DOI

      10.1186/s40623-018-0805-9

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Simultaneous FPI and TMA measurements of the lower-thermospheric wind in the vicinity of the poleward-expanding aurora after substorm onset2017

    • Author(s)
      S. Oyama, K. Kubota, T. Morinaga, T. T. Tsuda, J. Kurihara, M. F. Larsen, M. Yamamoto, and L. Cai
    • Journal Title

      J. Geophys. Res. Space Physics

      Volume: 122 Pages: 10,864-10,875

    • DOI

      10.1002/2017JA024613

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rayleigh/Raman lidar observations of gravity wave activity from 15 to 70 km altitude over Syowa (69S, 40E), the Antarctic2017

    • Author(s)
      M. Kogure, T. Nakamura, M. K. Ejiri, T. Nishiyama, Y. Tomikawa, M. Tsutsumi, H. Suzuki, T. T. Tsuda, T. D. Kawahara, and M. Abo
    • Journal Title

      J. Geophys. Res. Atmospheres

      Volume: 122 Pages: 7869-7880

    • DOI

      10.1002/2016JD026360

    • Peer Reviewed / Open Access
  • [Journal Article] Statistical investigation of Na layer response to geomagnetic activity using resonance scattering measurements by Odin/OSIRIS2017

    • Author(s)
      T. T. Tsuda, T. Nakamura, M. K. Ejiri, T. Nishiyama, K. Hosokawa, T. Takahashi, J. Gumbel, and J. Hedin
    • Journal Title

      Geophys. Res. Lett.

      Volume: 44 Pages: 5943-5950

    • DOI

      10.1002/2017GL072801

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sodium temperature/wind lidar based on laser-diode-pumped Nd:YAG lasers deployed at Tromso, Norway (69.6N, 19.2E)2017

    • Author(s)
      T. D. Kawahara, S. Nozawa, N. Saito, T. Kawabata, T. T. Tsuda, and S. Wada
    • Journal Title

      Opt. Express

      Volume: 25 Pages: A491-A501

    • DOI

      10.1364/OE.25.00A491

    • Peer Reviewed / Open Access
  • [Presentation] EISCATトロムソ観測所での人工オーロラ実験の為の予備調査2018

    • Author(s)
      津田卓雄, M. T. Rietveld, M. J. Kosch, 大山伸一郎, 細川敬祐, 野澤悟徳, 川端哲也, 水野亮, 小川泰信
    • Organizer
      EISCAT研究集会
  • [Presentation] 低廉光学カメラによる夜光雲観測の可能性の検討2018

    • Author(s)
      津田卓雄, 穂積裕太, 細川敬祐, 川浦健斗, 鈴木秀彦, 中村卓司
    • Organizer
      低廉光学機器による超高層大気ネットワーク計測に関する研究集会
  • [Presentation] 南極昭和基地における波長可変共鳴散乱ライダー観測の現状2018

    • Author(s)
      江尻省, 西山尚典, 津野克彦, 津田卓雄, 阿保真, 和田智之, 川原琢也, 中村卓司
    • Organizer
      第22回大気ライダー研究会
  • [Presentation] 光リモートセンシングによる超高層大気の研究2018

    • Author(s)
      津田卓雄, 斎藤徳人, 野澤悟徳, 川原琢也, 川端哲也, 高橋透, C. M. Hall, 和田智之, 中村卓司, 江尻省, 西山尚典, 阿保真, 津野克彦, J. Gumbel, J. Hedin
    • Organizer
      レーザー学会 学術講演会 第38回年次大会
    • Invited
  • [Presentation] Study on Na layer variation related with auroral activity using Na lidar data obtained at Syowa, Antarctic2018

    • Author(s)
      R. Tozu, T. T. Tsuda, T. D. Kawahara, Y. Tanaka, M. K. Ejiri, T. Nishiyama, and T. Nakamura
    • Organizer
      ISAR-5
    • Int'l Joint Research
  • [Presentation] Model calculations on Na layer variation induced by auroral energetic particles2018

    • Author(s)
      K. Takizawa, and T. T. Tsuda
    • Organizer
      ISAR-5
    • Int'l Joint Research
  • [Presentation] Aurora observations by an optical spectrograph at the EISCAT radar site, Tromso, Norway2018

    • Author(s)
      T. T. Tsuda, K. Hosokawa, T. Kawabata, S. Nozawa, and A. Mizuno
    • Organizer
      ISAR-5
    • Int'l Joint Research
  • [Presentation] オーロラ活動に伴うNa層の変動: 昭和Naデータの統計解析2018

    • Author(s)
      戸津亮, 津田卓雄, 川原琢也, 田中良昌, 江尻省, 西山尚典, 中村卓司
    • Organizer
      日本大気電気学会 第96回研究発表会
  • [Presentation] オーロラ降下粒子がNa層に与える効果の化学モデル計算2018

    • Author(s)
      滝沢響吾, 津田卓雄
    • Organizer
      日本大気電気学会 第96回研究発表会
  • [Presentation] PMCs observed by Himawari-82017

    • Author(s)
      T. T. Tsuda
    • Organizer
      地上・衛星観測による宙空研究セミナー
    • Int'l Joint Research
  • [Presentation] Studies of the polar lower thermosphere and mesosphere based on simultaneous observations of EISCAT radars and a sodium LIDAR2017

    • Author(s)
      S. Nozawa, T. D. Kawahara, Y. Ogawa, N. Saito, T. T. Tsuda, T. Takahashi, S. Wada, H. Fujiwara, M. Tsutsumi, C. Hall, T. Kawabata, and A. Brekke
    • Organizer
      The Eighth Symposium on Polar Science
    • Int'l Joint Research
  • [Presentation] Chemical model calculations on Na layer variation induced by energetic particle precipitation2017

    • Author(s)
      K. Takizawa, and T. T. Tsuda
    • Organizer
      The Eighth Symposium on Polar Science
    • Int'l Joint Research
  • [Presentation] Statistical investigation on Na layer variation related with auroral activity utilizing Na lidar data obtained at Syowa Station, Antarctic2017

    • Author(s)
      R. Tozu, T. T. Tsuda, T. D. Kawahara, Y. Tanaka, M. K. Ejiri, T. Nishiyama, and T. Nakamura
    • Organizer
      The Eighth Symposium on Polar Science
    • Int'l Joint Research
  • [Presentation] Sapphire cell development for the daytime Na lidar observations at Tromso2017

    • Author(s)
      T. D. Kawahara, S. Nozawa, N. Saito, T. T. Tsuda, T. Kawabata, T. Takahashi, and S. Wada
    • Organizer
      The Eighth Symposium on Polar Science
    • Int'l Joint Research
  • [Presentation] Aurora observations by a spectrograph at Tromso, Norway2017

    • Author(s)
      T. T. Tsuda, K. Hosokawa, T. Kawabata, S. Nozawa, and A. Mizuno
    • Organizer
      The Eighth Symposium on Polar Science
    • Int'l Joint Research
  • [Presentation] Vertical motion of the neutral atmosphere in the winter polar MLT region using the sodium LIDAR at Tromsoe2017

    • Author(s)
      S. Nozawa, T. T. Tsuda, Y. Ogawa, H. Fujiwara, T. Kawahara, N. Saito, S. Wada, T. Takahashi, M. Tsutsumi, T. Kawabata, C. Hall, and A. Brekke
    • Organizer
      地球電磁気・地球惑星圏学会第142回講演会
  • [Presentation] 原子大気オーロラ輝線 777.4 nm への分子大気オーロラ輝線の影響評価2017

    • Author(s)
      大山伸一郎, 細川敬祐, 小川泰信, 三好由純, 津田卓雄, 栗田怜, K. Antti, 藤井良一, 野澤悟徳, 宮岡宏, 田中良昌, 水野亮, 川端哲也
    • Organizer
      地球電磁気・地球惑星圏学会第142回講演会
  • [Presentation] Observations of auroral spectra in EISCAT radar site, Tromso, Norway2017

    • Author(s)
      T. T. Tsuda, K. Hosokawa, T. Kawabata, S. Nozawa, and A. Mizuno
    • Organizer
      地球電磁気・地球惑星圏学会第142回講演会
  • [Presentation] トロムソにおけるナトリウムライダーの夏期定常観測に向けて: 単結晶サファイアを用いた磁気光学狭帯域フィルタ開発2017

    • Author(s)
      川原琢也, 野澤悟徳, 斎藤徳人, 津田卓雄, 和田智之, 高橋透, 川端哲也
    • Organizer
      地球電磁気・地球惑星圏学会第142回講演会
  • [Presentation] 南極昭和基地における波長可変共鳴散乱ライダー観測の現状2017

    • Author(s)
      江尻省, 西山尚典, 津野克彦, 津田卓雄, 阿保真, 和田智之, 川原琢也, 中村卓司
    • Organizer
      地球電磁気・地球惑星圏学会第142回講演会
  • [Presentation] 光リモートセンシングによる金属層の動態調査: オーロラ粒子による影響2017

    • Author(s)
      津田卓雄, 中村卓司, 江尻省, 西山尚典, 阿保真, 津野克彦, 野澤悟徳, 川原琢也, 川端哲也, 斎藤徳人, 和田智之, C. M. Hall, 高橋透, J. Gumbel, J. Hedin
    • Organizer
      第35回レーザセンシングシンポジウム
  • [Presentation] All-Solid-State Coherent Sodium Resonance Light Source: toward Stable Lidar Observation2017

    • Author(s)
      N. Saito, T. Tsukihama, T. Kawahara, S. Nozawa, T. Kawabata, T. T. Tsuda, and S. Wada
    • Organizer
      MST15/iMST2-EISCAT18
    • Int'l Joint Research / Invited
  • [Presentation] Vertical motion of the neutral atmosphere in the polar MLT region2017

    • Author(s)
      S. Nozawa, T. T. Tsuda, Y. Ogawa, H. Fujiwara, T. Kawahara, N. Saito, S. Wada, T. Takahashi, M. Tsutsumi, T. Kawabata, C. Hall, and A. Brekke
    • Organizer
      MST15/iMST2-EISCAT18
    • Int'l Joint Research
  • [Presentation] Lower thermospheric wind variations in auroral patches during the substorm recovery phase2017

    • Author(s)
      S. Oyama, K. Shiokawa, Y. Miyoshi, K. Hosokawa, B. J. Watkins, J. Kurihara, T. T. Tsuda, and C. T. Fallen
    • Organizer
      MST15/iMST2-EISCAT18
    • Int'l Joint Research
  • [Presentation] Depletion of mesospheric sodium during extended period of pulsating aurora2017

    • Author(s)
      T. Takahashi, K. Hosokawa, S. Nozawa, T. T. Tsuda, Y. Ogawa, M. Tsutsumi, Y. Hiraki, H. Fujiwara, T. D. Kawahara, N. Saito, S. Wada, T. Kawabata, C. Hall, and H. Miyaoka
    • Organizer
      MST15/iMST2-EISCAT18
    • Int'l Joint Research
  • [Presentation] Resonance Lidar Observations for Polar Ionospheric Studies2017

    • Author(s)
      T. Nakamura, M. K. Ejiri, T. Nishiyama, T. T. Tsuda, M. Abo, T. D. Kawahara, and K. Tsuno
    • Organizer
      MST15/iMST2-EISCAT18
    • Int'l Joint Research
  • [Presentation] Na layer observations by lidar and spectrograph in the EISCAT Tromso site2017

    • Author(s)
      T. T. Tsuda, S. Hamada, K. Hosokawa, T. Kawabata, S. Nozawa, and A. Mizuno
    • Organizer
      MST15/iMST2-EISCAT18
    • Int'l Joint Research
  • [Presentation] Upgrade plan of an injection seeded, laser diode-pumped Nd:YAG laser-based sodium lidar2017

    • Author(s)
      T. D. Kawahara, S. Nozawa, N. Saito, T. Kawabata, T. T. Tsuda, T. Takahashi, and S. Wada
    • Organizer
      MST15/iMST2-EISCAT18
    • Int'l Joint Research
  • [Presentation] Energetic particle impact on the Na layer2017

    • Author(s)
      T. T. Tsuda, T. Takahashi, S. Nozawa, T. D. Kawahara, T. Kawabata, N. Saito, S. Wada, C. M. Hall, Y. Ogawa, K. Hosokawa, T. Nakamura, M. K. Ejiri, T. Nishiyama, M. Abo, K. Tsuno, J. Gumbel, and J. Hedin
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Int'l Joint Research / Invited
  • [Presentation] Spectral observations of aurora and artificial aurora in EISCAT radar site, Tromso, Norway2017

    • Author(s)
      T. T. Tsuda, S. Hamada, K. Hosokawa, T. Kawabata, S. Nozawa, and A. Mizuno
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Int'l Joint Research
  • [Presentation] Vertical motion of the neutral atmosphere above Tromsoe2017

    • Author(s)
      S. Nozawa, Y. Ogawa, H. Fujiwara, T. Kawahara, T. T. Tsuda, N. Saito, S. Wada, T. Takahashi, M. Tsutsumi, T. Kawabata, C. Hall, and A. Brekke
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Int'l Joint Research
  • [Presentation] Statistical study of sporadic sodium layer (SSL) in the polar lower thermosphere and upper mesosphere by using the Tromsoe sodium LIDAR2017

    • Author(s)
      Y. Ogawa, S. Nozawa, T. T. Tsuda, T. Kawahara, Y. Ogawa, H. Fujiwara, N. Saito, S. Wada, T. Takahashi, M. Tsutsumi, T. Kawabata, C. Hall, and A. Brekke
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Int'l Joint Research
  • [Presentation] Ionospheric perturbations due to earthquakes observed simultaneously by subionospheric VLF/LF wave and GPS TEC measurements2017

    • Author(s)
      H. Santosa, Y. Hobara, T. T. Tsuda, and S. Srinivas
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Int'l Joint Research
  • [Presentation] Study on the Earth’s metallic layers using optical remote sensing observations2017

    • Author(s)
      T. T. Tsuda, N. Saito, S. Nozawa, T. D. Kawahara, T. Kawabata, T. Takahashi, C.M. Hall, S. Wada, T. Nakamura, M. K. Ejiri, T. Nishiyama, M. Abo, K. Tsuno, J. Gumbel, and J. Hedin
    • Organizer
      Laser Solution for Space and the Earth, OPTICS and PHOTONICS International Congress 2017
    • Int'l Joint Research
  • [Presentation] Observations of the upper atmosphere using resonance scatter lidars2017

    • Author(s)
      T. Nakamura, M. K. Ejiri, M. Abo, T. D. Kawahara, T. Nishiyama, T. T. Tsuda, and K. Tsuno
    • Organizer
      Laser Solution for Space and the Earth, OPTICS and PHOTONICS International Congress 2017
    • Int'l Joint Research / Invited
  • [Presentation] Sodium LIDAR observations of polar mesosphere and lower thermosphere2017

    • Author(s)
      S. Nozawa, T. Kawahara, T. T. Tsuda, Y. Ogawa, T. Takahashi, N. Saito, S. Wada, H. Fujiwara, M. Tsutsumi, C. Hall, T. Kawabata, Y. Ogawa, and A. Brekke
    • Organizer
      Laser Solution for Space and the Earth, OPTICS and PHOTONICS International Congress 2017
    • Int'l Joint Research / Invited
  • [Presentation] Pulsating aurora-induced Na density depletion in the polar MLT region: high-speed sodium lidar and EISCAT radar observation2017

    • Author(s)
      T. Takahashi, T. T. Tsuda, K. Hosokawa, S. Nozawa, Y. Ogawa, M. Tsutsumi, Y. Hiraki, T. D. Kawahara, N. Saito, S. Wada, T. Kawabata, C. Hall, and H. Miyaoka
    • Organizer
      Laser Solution for Space and the Earth, OPTICS and PHOTONICS International Congress 2017
    • Int'l Joint Research

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Published: 2018-12-17  

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