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The Systematic Observation of the Thundercloud and Lightning

Research Project

Project/Area Number 03041052
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionField Research
Research InstitutionOsaka University Faculty of Engineering

Principal Investigator

MATSUURA Kenji  Osaka University Faculty of Engineering, 工学部, 教授 (70112018)

Co-Investigator(Kenkyū-buntansha) M. BROOK  アメリカ合衆国ニューメキシコ鉱工科大学, 名誉教授
V. MAZUR  アメリカ合衆国商務省海洋気象局, 研究員
D. RUST  アメリカ合衆国商務省海洋気象局, 部長
KAWASAKI Zen-Ichiro  Osaka University Faculty of Engeineering, 工学部, 助教授 (60126852)
NAKANO Minoru  Toyota college of Technology, 教授 (50023685)
TAKAGI Nobuyuki  Gifu University Faculty of Engineering, 工学部, 助教授 (80179415)
ARIMA Izumi  Gifu University Faculty of Engineering, 工学部, 教授 (30021570)
BROOK M.  University of New Mexico
MAZUR.V  NOAA NSSL U.S.A.
RUST D.  NOAA NSSL U.S.A.
BROOK M.  ニューメキシコ鉱工大学(アメリカ合衆国), 名誉教授
MAZUR V.  商務省, 海洋気象局(アメリカ合衆国), 研究員
RUST D.  商務省, 海洋気象局(アメリカ合衆国), 部門長
Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥9,500,000 (Direct Cost: ¥9,500,000)
Fiscal Year 1992: ¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 1991: ¥4,500,000 (Direct Cost: ¥4,500,000)
KeywordsLightning / Initiation / Electromagnetic Wave / Optical Measurement / 雷活動 / 電界観測 / 放電路 / 電光観測 / レ-ダ観測
Research Abstract

The systematic thunderstorm observation was caraaid out at Orlando, Florida during the thunderstrom season in 1993. Concerning the Japanese scientist groups, Osaka University is assigned to the electric field change observation at the two different points simultaneously using the newly developed wideband slow antenna. Gifu University is assigned to the observation of a lightning channel by a video camera and by an optical measurement system which maintains the high spatial resolution and we can obtain an idea on the lightning channel variation in the direction of the diameter. Gifu University also equipped an optical measurement system with which they can discriminate the time difference of so called simultaneous multi point lightning strikes. On the other hand concerning the group of U.S., National Severe Storm Laboratory (NSSL) is assigned to taking high speed video pictures of lightning channels by a hand made whole sky camera. New Mexico Tech is assigned to the operation of the VHF imaging system of lightning channel in side the thundercloud.
Since the lightning discharge is a transient phenomena which is sometimes shorter than 1 sec., the most laborious work for the multi point observation is the operation of the common and accurate time standard. Normally we use the transient memory to record the observed signals and To produce the common trigger signal is often difficult, We equipped the two slow antenna 2.5 km away each other and we decided that for the trigger signal of the systems The luminous signal emitted from lightnings discharges is used. We are convinced the excellent synchronization of recorded data at two different point without the real time connection.
We had eight thunderstorm days in early August and captured many preferable data. Those are surely effective to understand the mechanism of simultaneous multi point lightning strikes. The analysis is undertaken at each Institute.

Report

(2 results)
  • 1992 Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] 河崎 善一郎: "Common Physical Processes in Natural and Triggered Lightning in Winter Storms in Japan" Journal of Geophtsical Research. 97. 12935-12945 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 仲野 實: "VHF/UHF Radiation from Positive and Negative Lihgtning" Environmental and Space Electromagnetics. 95-101 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 仲野 實: "Experiments on Rocket Triggered Lightning" Res.Lett.Atomos.Electr.,. 12. 29-35 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 有馬 泉: "Behavior of Space Charges Formed by D.C.Corana in Coaxial Cylindrical Electrode Geonetry before and after Chop of Voltage" Proceedings of the Tenth International Conference on GAS DISCHARGES AND THEIR APPLLCATIONS. 1. 246-249 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 有馬 泉: "Fundamental Study on Lightning Flash with Unipolar Multiple Strokes to the Ground" Proceedings of the Tenth International Conference on GAS DISCHARGES AND THEIR APPLLCATIONS. 2. 572-575 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 河崎 善一郎: "The Elctric Field Changes and UHF Radiations Caused by the Triggered Lightning in Japan" Geophysical Research Letters. 18. 1711-1714 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Zen-Ichiro Kawasaki: "Common Physical Processes in Natural and Triggered Lightning in Winter Storms in Japan" Journal of Geophysical Research. 97. 12935-12945 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Minoru Nakano: "VHF/UHF Radiation from Positive and Negative Lightning" Environmental and Space Electromagnetics. 95-101 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Minoru Nakano: "Experiments on Rocket Triggered Lightning" Res. Lett. Atmos. Electr.12. 29-35 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Izumi Arima: "Behavior of Space Charges Formed by D.C. Corona in Coaxial Cylindrical Electrode Geometry Before and After Chop of Voltage" Proceedings of the Tenth International Conference on GAS DISHARGES AND THEIR APPLICATIONS. 1. 246-249 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Izumi Arima: "Fundamental Study on Lightning Flash with Unipolar Multiple Stores to the Ground" Proceedings of the Tenth International Conference on GAS DISCHARGES AND THEIR APPLICATIONS. 2. 572-575 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 勝野 泰他: "雷放電路は,フラクタルであるか?" 電気学会論文誌A. 111. 496-497 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 河崎 善一郎他: "落雷電界波形長時間記録装置の開発と観測結果" 電気学会論文誌B. 111. 521-528 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 河崎 善一郎他: "落雷電磁界の100kHzー1MHzフ-リエスペクトルと大地導電率" Research Letters on Atmospheric Electricity. 11. 11-22 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 金尾 忠他: "電磁界変化とUHF放射からみたロケット誘雷" 電気学会論文誌B. 111. 1079-1085 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Z_<EN>-I_<CHIRO> K_<HWASAKI et al.>: "The electric field changes and UHF radiations caused by the triggered lightning in Japan" Geophysical Research Letters. 18. 1711-1714 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 河崎 善一郎他: "落雷頻度でみた夏季・冬季の雷活動" 天気. 39. 21-27 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Kikuchi: "Environmental and Space Electromgnetics" Springer-Verlag, 1-615 (1991)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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