Three-dimensional observations for lightning discharges and study on charge distributions inside thunderclouds during winter thunderstorm season by a broadband digital interferometer

• Project/Area Number: 18740297
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Osaka University
• Principal Investigator: MORIMOTO Takeshi Osaka University, 大学院工学研究科, 講師 (60403169)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2007: ¥1,200,000 (Direct Cost: ¥1,200,000); Fiscal Year 2006: ¥1,400,000 (Direct Cost: ¥1,400,000)
• Keywords: 冬季雷雲 / 雷放電 / 大気電気学 / 自然現象観測 / 気象学 / リモートセンシング / 大気現象 / 環境計測 / 電荷分布

Research Abstract

研究機関の3ヶ年に亘り、毎年11月から1月にかけて、石川県河北郡内灘町を中心とする地域で冬季雷観測を実施した。冬季雷に特徴的な高構造物からの上向き放電で開始する雷放電に着目し、一連の雷放電現象であるにも関わらず、雷雲内の正負両極性の電荷を中和するような放電現象の観測に成功したり、連続電流発生時の電荷移動の推定に成功したりするなどの成果を挙げた。雷放電起源の高エネルギー粒子の発生を観測することによる雷放電への逃走絶縁破壊の影響を確認したことも特筆すべき成果である。

Research Products

• [Journal Article] Evidence of negative leaders prior to fast rise ICC pulses of upward lightning (2009)
  • Author(s): S. Yoshida, M. Akita, Y. Nakamura, T. Morimoto, T. Ushio, Z.-I. Kawasaki, D. Wangm, N. Takagim
  • Journal Title: Journal of Atmospheric Electricity vol.29, no.1 Pages: 13-21
  • Peer Reviewed
• [Journal Article] Evidence of negative leaders prior to fast rise ICC, pulses of upward lightning (2009)
  • Author(s): S. Yoshida
  • Journal Title: Journal of Atmospheric Electricity 29-1 Pages: 13-21
  • Peer Reviewed
• [Journal Article] High energy photon and electron bursts associated associated with upward lightning (2008)
  • Author(s): S. Yoshida, T. Morimoto, T. Ushio, Z.-I. Kawasaki, T. Torii, D. Wang, T. Takagi, T. Watanabe
  • Journal Title: Geophysical Research Letters vol.35
  • Peer Reviewed
• [Journal Article] Energetic radiation bursts associated with lightning (2008)
  • Author(s): S. Yoshida, T. Morimoto, T. Ushio, Z. Kawasaki
  • Journal Title: IEEJ Transactions on Fundamentals and Materials vol.128, no.1 Pages: 9-13
  • NAID: 10020026309
  • Peer Reviewed
• [Journal Article] High energy photon and electron bursts associated with upward lightning strokes (2008)
  • Author(s): S. Yoshida
  • Journal Title: Geophysical Research Letters 35-L10804
  • Peer Reviewed
• [Journal Article] VHF broadband digital interferometer (2006)
  • Author(s): T. Morimoto, Z. Kawasaki
  • Journal Title: Transactions on Electrical and Electronic Engineering vol.1, Issue 2 Pages: 140-144
  • NAID: 10025770938
  • Peer Reviewed
• [Journal Article] Three-dimensional localization system for impulsive noise source using ultra-wideband digital interferometer technique (2006)
  • Author(s): M.S.Soliman, T.Morimoto, Z.Kawasaki
  • Journal Title: Journal of Electromagnetic Waves and Applications 20・4 Pages: 515-530
• [Journal Article] VHF broadband digital interferometer (2006)
  • Author(s): T.Morimoto, Z.Kawasaki
  • Journal Title: Transactions on Electrical and Electronic Engineering 1・2 Pages: 144-146
  • NAID: 10025770938
• [Journal Article] Propagation characteristic of wideband electromagnetic wave in the ionosphere (2006)
  • Author(s): T.Taniguchi, A.Hirata, T.Morimoto, Z.Kawasaki
  • Journal Title: IEEJ Transactions on Fundamentals and Materials 126・11 Pages: 1173-1176
  • NAID: 10018317995
• [Presentation] 広帯域干渉計による三次元雷放電進展路と雲内電荷構造について (2009)
  • Author(s): 秋田, 村田, 中村, 吉田, 森本, 牛尾, 河崎
  • Organizer: 日本大気電気学会第80回研究発表会
  • Place of Presentation: 東京
  • Year and Date: 2009-01-08
• [Presentation] Evidence of negative leaders which precede fast rise ICC pulses of upward lightning (2008)
  • Author(s): S. Yoshida, M. Akita, T. Morimoto, T. Ushio, Z.-I. Kawasaki, D. Wang, N. Takagi
  • Organizer: AGU 2008 Fall Meeting
  • Place of Presentation: California, U.S.A.
  • Year and Date: 2008-12-15
• [Presentation] Evidence of negative leaders which precede fast rise ICC pulses of upward lightning (2008)
  • Author(s): S. Yoshida
  • Organizer: AGU 2008 Fall Meeting
  • Place of Presentation: U.S.A. Chicago
  • Year and Date: 2008-12-15
• [Presentation] 広帯域干渉計による三次元雷放電進展路と雲内電荷構造について (2008)
  • Author(s): 秋田, 村田, 中村, 吉田, 森本, 牛尾, 河崎, 山本
  • Organizer: 平成20年電気関係学会関西支部連合大会
  • Place of Presentation: 京都
  • Year and Date: 2008-11-08
• [Presentation] ICCパルスを引き起した直前のリーダ進展 (2008)
  • Author(s): 吉田, 秋田, 森本, 牛尾, 河崎, 王, 高木
  • Organizer: 平成20年電気関係学会関西支部連合大会
  • Place of Presentation: 京都
  • Year and Date: 2008-11-08
• [Presentation] 広帯域干渉計による冬季雷観測 (2008)
  • Author(s): 秋田学
  • Organizer: 平成20年電気関係学会関西支部連合大会
  • Place of Presentation: 京都
  • Year and Date: 2008-11-08
• [Presentation] Comprehensive thunderstorm observations by the broadband radar network (2008)
  • Author(s): T. Morimoto, T. Ushio, Z. Kawasaki
  • Organizer: The XXIXth URSI General Assembly
  • Place of Presentation: Illinois, U.S.A.
  • Year and Date: 2008-08-11
• [Presentation] Comprehensive thunderstorm observations by the broadband radar network (2008)
  • Author(s): T. Morimoto
  • Organizer: The XXIXth URSI General Assembly
  • Place of Presentation: U.S.A. Chicago
  • Year and Date: 2008-08-11
• [Presentation] 広帯域ディジタル干渉計による両極性落雷の放電進展様相 (2008)
  • Author(s): 秋田, 吉田, 森本, 牛尾, 河崎
  • Organizer: 日本大気電気学会第79回研究発表会
  • Place of Presentation: 沖縄
  • Year and Date: 2008-07-10
• [Presentation] 上向き放電で始まる落雷で見られたICCパルスについて (2008)
  • Author(s): 吉田, 二改, 森本, 牛尾, 河崎, 王, 高木
  • Organizer: 日本大気電気学会第79回研究発表会
  • Place of Presentation: 沖縄
  • Year and Date: 2008-07-10
• [Presentation] 雷放電に関するマイクロ波放射 (2008)
  • Author(s): 吉田, 西川, 二改, 森本, 牛尾, 河崎, 王, 高木
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 2008-05-29
• [Presentation] VHF波帯広帯域ディジタル干渉計を用いたK変化を伴う雲放電観測 (2008)
  • Author(s): 秋田, 佐藤, 森本, 牛尾, 河崎
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 2008-05-29
• [Presentation] 雷嵐観測用VHF波帯広帯域干渉計の開発(5)-冬季雷観測- (2008)
  • Author(s): 秋田, 森本, 牛尾, 河崎
  • Organizer: 日本気象学会2008年度春季大会
  • Place of Presentation: 神奈川
  • Year and Date: 2008-05-19
• [Presentation] 冬季雷に見られた低高度の電荷領域 (2008)
  • Author(s): 吉田, 西川, 二改, 森本, 牛尾, 河崎, 王, 高木
  • Organizer: 日本気象学会2008年度春季大会
  • Place of Presentation: 神奈川
  • Year and Date: 2008-05-19
• [Presentation] 夏季雷に伴うマイクロ波の観測 (2008)
  • Author(s): 吉田, 森本, 牛尾, 河崎
  • Organizer: 日本大気電気学会第78回研究発表会
  • Place of Presentation: 千葉
  • Year and Date: 2008-01-11
• [Presentation] Three-dimensional VHF observations using advanced VHF broadband digital interferometer (2007)
  • Author(s): M. Akita, K. Hirai, M. Satoh, Y. Nakamura, T. Morimoto, T. Ushio, Z. Kawasaki
  • Organizer: 13th International Conference on Atmospheric Electricity (ICAE)
  • Place of Presentation: Beijing, China
  • Year and Date: 2007-08-17
• [Presentation] Three - dimensional VHF observations using advanced VHF broadband digital interferometer (2007)
  • Author(s): M. Akita
  • Organizer: 13th Int'l Conference on Atmospheric Electricity
  • Place of Presentation: China
  • Year and Date: 2007-08-17
• [Presentation] Radiation bursts synchronizing with lightning discharges in Hokuriku, Japan (2007)
  • Author(s): S. Yoshida, M. Satoh, T. Morimoto, T. Ushio, Z. Kawasaki, T. Torii, D. Wang, N. Takagi, T. Watanabe
  • Organizer: 13th International Conference on Atmospheric Electricity (ICAE)
  • Place of Presentation: Beijing, China
  • Year and Date: 2007-08-15
• [Presentation] Radiation bursts synchronizing with lightning discharges in Hokuriku, Japan (2007)
  • Author(s): S. Yoshida
  • Organizer: 13th Int'l Conference on Atmospheric Electricity
  • Place of Presentation: China
  • Year and Date: 2007-08-15
• [Presentation] 冬季雷から発生する放射線バースト (2007)
  • Author(s): 吉田, 佐藤, 森本, 牛尾, 河崎, 鳥居, 王, 高木, 渡邉
  • Organizer: 日本大気電気学会第77回研究発表会
  • Place of Presentation: 愛知
  • Year and Date: 2007-07-20
• [Presentation] 雷放電に関連した放射線バースト (2007)
  • Author(s): 吉田, 佐藤, 鳥居, 森本, 牛尾, 河崎
  • Organizer: 日本地球惑星科学連合2007年大会
  • Place of Presentation: 千葉
  • Year and Date: 2007-05-24
• [Presentation] An operational VHF broadband digital interferometer and winter thunderstorm observations (2006)
  • Author(s): T. Morimoto, M. Akita, T. Ushio, Z. Kawasaki
  • Organizer: 28th International Conference on Lightning Protection (ICLP)
  • Place of Presentation: Kanazawa, Japan
  • Year and Date: 2006-09-20
• [Presentation] 広帯域ディジタル干渉計による雲内の放電進展様相 (2006)
  • Author(s): 佐藤, 秋田, 森本, 牛尾, 河崎
  • Organizer: 日本大気電気学会第75回研究発表会
  • Place of Presentation: 大阪
  • Year and Date: 2006-07-20
• [Presentation] 雷嵐観測用VHF波帯広帯域干渉計の開発(4)-雷放電進展様相と雲内電荷分布- (2006)
  • Author(s): 佐藤, 森本, 牛尾, 河崎
  • Organizer: 日本気象学会2006年度春季大会
  • Place of Presentation: 茨城
  • Year and Date: 2006-05-23
• [Presentation] 広帯域ディジタル干渉計でみた雷放電路と雷雲内電荷分布 (2006)
  • Author(s): 佐藤, 森本, 牛尾, 河崎
  • Organizer: 日本地球惑星科学連合2006年大会
  • Place of Presentation: 千葉
  • Year and Date: 2006-05-15