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Construction and evaluation of a system for measuring changes in ground surface potential during earthquakes

Research Project

Project/Area Number 19K03045
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 09070:Educational technology-related
Research InstitutionSasebo National College of Technology (2022)
Ishikawa National College of Technology (2019-2021)

Principal Investigator

Yoshiaki Suda  佐世保工業高等専門学校, その他, 特命教授 (20124141)

Co-Investigator(Kenkyū-buntansha) 川崎 仁晴  佐世保工業高等専門学校, 電気電子工学科, 教授 (10253494)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords地表面電位変化 / 地震 / 地殻変動 / 大気電界変化 / 自然災害 / 豪雨 / 豪雪 / 地表電位変化
Outline of Research at the Start

地球と電離層の間が、巨視的にはコンデンサとして働くため、地震等の自然災害が発生する前には先行現象として大気から大地に流れる電流(空地電流)や大気電界変化が起こることが知られており、安価で簡易的な地表面電位計測装置である程度のデータが収集できる。本申請では、この装置を全国51の国立高専のできるだけ多くの高専に設置し、全国における各地域の地表面電位変化計測データを収集する。さらに各高専が提携している海外の教育機関に依頼し、海外のデータも収集する。これらの結果を元に、地震のメカニズム等を総合的に学習する教育システムを開発し、電気的な観点から見た日本や地球をモデル化して地震の先行現象として利用する。

Outline of Final Research Achievements

An inexpensive system to electrically detect extremely small precursory crustal deformations have been developed. The system was installed at eight technical colleges and universities throughout Japan. Using this system, we developed a device to collect and display electrical information from all over Japan.The results of this study revealed the follows. 1) Before an earthquake, there is a predominant change in electrical potential in the positive direction. This is thought to be due to ions generated by the shear stress of the earth. 2) Potential changes also occur with approaching cumulonimbus clouds that bring lightning strikes and heavy rainfall. During lightning strikes, the potential can be negative. 3) Potential changes in the negative direction occur during snowfall. 4) Potential changes almost always occur before an earthquake. But when a potential change occurs, the likelihood of an earthquake is found to be less than 30%.

Academic Significance and Societal Importance of the Research Achievements

地震や豪雨などの大規模自然災害を地表面電位変化からある程度予知できるシステムの開発を行った。これらの変化は、地震や降雨時前の積乱雲の接近でほぼ必ず起こるが、どのような電位変化のパターン後にどのような気象変動が起こるかは確実には分からなかった。また、電位変化は災害の必要条件ではあるが、十分条件ではないため、確実な予測には単純には利用できない。今後は、電位変化のパターンや計測装置の形状変化を工夫することと、これらのデータを多く蓄積し、AI等でパターン解析することによって、予知装置としての精度を上げられるか、検討していくとともに、地震や豪雨、豪雪、落雷を学習する装置として利用することを検討したい。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (13 results)

All 2023 2022 2021 2020 2019

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (8 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Prediction of Natural Disasters and its Application to Education Using Simple Type Space Potential Fluctuation Detector2021

    • Author(s)
      川崎仁晴、須田義昭
    • Journal Title

      IEEJ Transactions on Fundamentals and Materials

      Volume: 141 Issue: 8 Pages: 458-463

    • DOI

      10.1541/ieejfms.141.458

    • NAID

      130008070593

    • ISSN
      0385-4205, 1347-5533
    • Year and Date
      2021-08-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Preparation of functional thin films with elemental gradient by sputtering with mixed powder targets2021

    • Author(s)
      Hiroharu Kawasaki, Tamiko OHSHIMA, Yoshihito YAGYU, Takeshi Ihara, Kazuhiko Mitsuhashi, Hiroshi Nishiguchi and Yoshiaki Suda
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 61 Issue: SA Pages: 1-4

    • DOI

      10.35848/1347-4065/ac1488

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Preparation of Multielements Mixture Thin Film by One-Step Process Sputtering Deposition Using Mixture Powder Target2020

    • Author(s)
      Hiroharu Kawasaki, Tamiko Ohshima, Yoshihito Yagyu, Takeshi Ihara, Yoshiaki Suda
    • Journal Title

      IEEE Transactions on Plasma Science

      Volume: 49 Issue: 1 Pages: 48-52

    • DOI

      10.1109/tps.2020.3025306

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Preparation of Sn doped SiO2 thin films by magnetron sputtering deposition using metal and metal-oxide powder targets2019

    • Author(s)
      H. Kawasaki, T. Ohshima, Y. Yagyu, T. Ihara, M. Shinohara, Y. Suda
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 58 Issue: SA Pages: SAAD04-SAAD04

    • DOI

      10.7567/1347-4065/aaea67

    • NAID

      210000135198

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Preparation of two-dimensional thin films by backside irradiation pulsed laser deposition method using powder target2019

    • Author(s)
      Hiroharu Kawasaki, Tamiko Ohshima, Yoshihito Yagyu, Takeshi Ihara, Masanori Shinohara, Yoshiaki Suda
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59(SA) Issue: SA Pages: SAAC01-SAAC01

    • DOI

      10.7567/1347-4065/ab4e76

    • NAID

      210000157359

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 電磁気的な視点から考えた異常気象予知装置の開発II2023

    • Author(s)
      川崎仁晴, 須田義昭
    • Organizer
      応用物理学会春季講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 放電現象を考慮した異常気象予知に関する研究II2022

    • Author(s)
      須田義昭, 川崎仁晴
    • Organizer
      プラズマ核融合学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Preparation of elemental gradient functional thin films by using mixture powder targets2021

    • Author(s)
      Hiroharu Kawasaki, Tamiko Ohshima, Yoshihito Yagyu, Takeshi Ihara, Yusuke Hibino, Yoshiaki Suda
    • Organizer
      MRM2021 Materials Research Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Multi-elements mixture thin film preparation process by sputtering deposition using mixture powder target2021

    • Author(s)
      H. Kawasaki, T. Ohshima, Y. Yagyu, T. Ihara, Y.Hibino, Y. Suda
    • Organizer
      The 42nd International Symposium on Dry Process
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 地球をコンデンサとして捉えた地震予知装置の開発Ⅱ2020

    • Author(s)
      川崎仁晴、須田義昭
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Trial of Thin film preparation for preventing hydrogen embrittlement using sputtering deposition method using powder target2020

    • Author(s)
      Hiroharu Kawasaki, Hiroshi Nishiguchi, Tamiko Ohshima, Yoshihito Yagyu, Takeshi Ihara, Yoshiaki Suda
    • Organizer
      ISPlasma2020
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 地球をコンデンサとして捉えた地震予知装置の開発I2020

    • Author(s)
      川崎仁晴, 須田義昭
    • Organizer
      第66回応用物理学会春季講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Preparing of multi-elements two-dimensional thin films by plasma process using metal and metal oxide powder targets2019

    • Author(s)
      H. Kawasaki, T. Ohshima, Y. Yagyu, T. Ihara, M. Shinohara, Y. Suda
    • Organizer
      APSPT-11
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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