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An Observation of Coseismic Atmospheric Electricity Signals using Electrostatic Antenna.

Research Project

Project/Area Number 12450114
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 電力工学・電気機器工学
Research InstitutionAkita Prefectural University

Principal Investigator

TAKEUCHI Nobunao  Akita Prefectural University, Faculty of Systems Science and Technology, professor, システム科学技術学部, 教授 (80005420)

Co-Investigator(Kenkyū-buntansha) OKUBO Kan  Akita Prefectural University, Faculty of Systems Science and Technology, assistant, システム科学技術学部, 助手 (90336446)
TAKAYAMA Masakazu  Akita Prefectural University, Faculty of Systems Science and Technology, associate professor, システム科学技術学部, 助教授 (20236368)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥10,300,000 (Direct Cost: ¥10,300,000)
Fiscal Year 2001: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2000: ¥7,900,000 (Direct Cost: ¥7,900,000)
KeywordsEarthquake electromagnetism / Atmospheric electricity / Earthquake electricity / Seismic observation / Atmospheric electricity variation signal / Electrostatic antenna / Underground electricity / 大地電気変動
Research Abstract

To investigate variation signal of atmospheric electricity related to the earthquake, we prepared large electrostatic antennas and made observation of this minute fluctuation signal. The observation system is composed with the large electrostatic antenna, digital recorder and various sensors. Nearby the electrostatic antenna is set the observation hut where data gathering machines to record the observed signals are placed. These machines are being operated in unmanned long-term observation running an air conditioner. The following three places were selected as an observation place and the observation system is installed at each place.
The chosen observation places are as follows.
(1) Honjo campus of Akita prefectural university in the Honjo City, Akita.
(2) The seminar house of Akita prefectural university in the Kyowa Town, Akita.
(3) The farmer's square in Sennan Village, Akita.
From the August 2000, climate-proof test of the large electrostatic antenna under the heavy snowfall area and a … More djustment of whole observation systems had been continued and experimental data collected preliminarily. From the May 2001, full observation has been continued.
The earthquake occurred in the deep underground of south region of Iwate at about 22:02 on December second, 2001. Seismic intensity of this earthquake is above 3 in the whole region of Akita. We succeeded to observe various variation signals related with the propagating seismic wave in our three observation places.
Main results are as follows.
(1) Earth potential difference variation and atmospheric electricity variation signals can be observed in the seismic wave propagating through three observation places.
(2) The amplitude of the variation signal is much different in each observation place.
(3) The generation of the atmospheric electricity variation is strongly related with one of the earth potential different variation.
(4) It can be guessed that stratum condition of the observation place greatly affects the generation of the each variation signal. Less

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 竹内伸直: "風速と地電位差の関係"電気学会論文誌C分冊. 120-C・7. 950-956 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 竹内伸直: "仙台市郊外で発生した地震についての電磁変動観測"電気学会論文誌C分冊. 120-C・10. 1409-1415 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 竹内伸直: "地震に伴う電磁現象"電気学会技術報告. 836号. 8-12 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Nobunao TAKEUCHI: "Correlation between Wind Speed and Earth Potential Difference variations"Trans, IEE of JAPAN, Vol.120-C. No.7. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Nobunao TAKEUCHI: "Potential Variations of Metal Electrode in the Air during Seismic Wave Propagation"Trans, IEE of JAPAN, Vol.120-C. No.10. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Nobunao TAKEUCHI: "The electromagnetic phenomenon with the earthquake"Technical report of IEE of Japan. No.836. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 竹内伸直: "風速と地電位差の関係"電気学会論文誌C分冊. 120-C・7. 950-956 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] 竹内伸直: "仙台市郊外で発生した地震についての電磁変動観測"電気学会論文誌C分冊. 120-C・10. 1409-1415 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] 竹内伸直: "地震に伴う電磁現象"電気学会技術報告. 836号. 8-12 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 竹内伸直: "風速と地電位差の関係"電気学会論文誌C分冊. 120-C・7. 950-956 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 竹内伸直: "仙台市郊外で発生した地震についての電磁変動観測"電気学会論文誌C分冊. 120-C・10. 1409-1415 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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