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Characterization of conductive ground using handheld loop-loop 3D electromagnetic method

Research Project

Project/Area Number 19560812
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Earth system and resources enginnering
Research InstitutionKyushu University

Principal Investigator

SASAKI Yutaka  Kyushu University, 大学院・工学研究院, 助教 (10128027)

Co-Investigator(Kenkyū-buntansha) NAKAZATO Hiroomi  農業食品産業技術総合研究機構, 農村工学研究所, 主任研究員 (00373225)
INOUE Keisuke  農業食品産業技術総合研究機構, 農村工学研究所, 主任研究員 (60414455)
Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywords物理探査 / 電磁探査 / 比抵抗 / 磁化率 / 導電性地盤
Research Abstract

Handheld loop-loop electromagnetic (EM) instruments are being used increasingly for shallow environmental surveys because of their portability. However, in many cases, the quality of data is so poor that quantitative interpretation is not justified. This is because EM data are inherently susceptibility to calibration errors. We have developed an algorithm that simultaneously inverts loop-loop EM data for a multidimensional resistivity distribution and offset errors. By using this simultaneous inversion algorithm, one can determine the resistivity distributions without being affected by offset errors. We have also developed an inversion algorithm to simultaneously recover multidimensional distributions of resistivity and magnetic susceptibility from various types of loop-loop EM data. This development of a new algorithm was motivated by the fact that EM data are often affected by both resistivity and magnetic susceptibility particularly where metal objects are buried. For these inversion methods to work successfully, the data must be collected at multiple heights and/or different loop configurations.

Report

(4 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (6 results)

All 2009 2008 2007 Other

All Presentation (6 results)

  • [Presentation] TDEMによる多良間島における淡水レンズ調査2009

    • Author(s)
      中里裕臣
    • Organizer
      物理探査学会
    • Place of Presentation
      東京
    • Year and Date
      2009-05-25
    • Related Report
      2009 Annual Research Report
  • [Presentation] TDEMによる多良間島における淡水レンズ調査2009

    • Author(s)
      中里裕臣、石田聡、土原健雄、吉本周平、皆川裕樹
    • Organizer
      物理探査学会学術講演会
    • Place of Presentation
      東京
    • Related Report
      2009 Final Research Report
  • [Presentation] 小型ループ電磁法の探査特性2008

    • Author(s)
      重松愛二郎、佐々木裕、水永秀樹
    • Organizer
      物理探査学会学術講演会
    • Place of Presentation
      東京
    • Year and Date
      2008-05-15
    • Related Report
      2009 Final Research Report
  • [Presentation] Resistivity and calibration error estimations for small-loop electromagnetic method2007

    • Author(s)
      Yutaka Sasaki, Jeong-Sul Son, Changryol Kim, Jung-Ho Kim
    • Organizer
      Joint Conference of Korean Society of Exploration Geophysicists and Korean Geophysical Society
    • Place of Presentation
      Daejeon, Korea
    • Year and Date
      2007-06-07
    • Related Report
      2009 Final Research Report
  • [Presentation] Resistivity monitoring of ground water recharge test by two different recharge ways

    • Author(s)
      Keisuke Inoue, Hiroomi Nakazato, Tomijiro Kubota, Mutsuo Takeuchi, Koji Furue, Hee Joon Kim
    • Organizer
      2009 International Joint Symposium between IEGS (Korea)
    • Place of Presentation
      NIRE and CERI (Japan)
    • Related Report
      2009 Final Research Report
  • [Presentation] Numerical experiment on the effective arrangement of 2-D survey lines for 3-D inversion of resistivity data

    • Author(s)
      Keisuke Inoue, Hiroomi Nakazato, Mutsuo Takeuchi, Yoshihiro Sugimoto, Hee Joon Kim
    • Organizer
      2008 International Joint Symposium between IEGS (Korea)
    • Place of Presentation
      NIRE and CERI (Japan)
    • Related Report
      2009 Final Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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