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

使用手持式环路 3D 电磁法表征导电接地

• 批准号: 19560812
• 负责人: SASAKI Yutaka
• 金额: $ 3.16万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19560812/
• 关键词: 物理探査; 電磁探査; 比抵抗; 磁化率; 導電性地盤

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.

手持式环路电磁 (EM) 仪器由于其便携性，越来越多地用于浅层环境调查。然而，在许多情况下，数据质量很差，定量解释是不合理的。这是因为电磁数据本质上容易受到校准误差的影响。我们开发了一种算法，可以同时反演环路电磁数据以获得多维电阻率分布和偏移误差。通过使用这种同步反演算法，可以确定电阻率分布而不受偏移误差的影响。我们还开发了一种反演算法，可以从各种类型的环路电磁数据中同时恢复电阻率和磁化率的多维分布。新算法的开发是由于电磁数据经常受到电阻率和磁化率的影响，特别是在埋有金属物体的情况下。为了使这些反演方法成功工作，必须在多个高度和/或不同的环路配置处收集数据。

项目成果

Numerical experiment on the effective arrangement of 2-D survey lines for 3-D inversion of resistivity data

电阻率数据三维反演二维测线有效布置数值试验

• 作者: Keisuke Inoue;Hiroomi Nakazato;Mutsuo Takeuchi;Yoshihiro Sugimoto;Hee Joon Kim
• 通讯作者: Hee Joon Kim

Resistivity and calibration error estimations for small-loop electromagnetic method

小环电磁法的电阻率和校准误差估计

• 发表时间: 2007
• 作者: Yutaka Sasaki;Jeong-Sul Son;Changryol Kim;Jung-Ho Kim
• 通讯作者: Jung-Ho Kim

Resistivity monitoring of ground water recharge test by two different recharge ways

两种不同补给方式地下水补给试验电阻率监测

• 作者: Keisuke Inoue;Hiroomi Nakazato;Tomijiro Kubota;Mutsuo Takeuchi;Koji Furue;Hee Joon Kim
• 通讯作者: Hee Joon Kim

TDEMによる多良間島における淡水レンズ調査

使用 TDEM 对多良间岛进行淡水透镜体调查

• 发表时间: 2009
• 作者: Susumu Okumura;Satoshi Miyashita;Susumu Okumura;Susumu Okumura;Susumu Okumura;Susumu Okumura;奥村進;奥村進;奥村進;奥村 進;奥村進;奥村 進;奥村 進;奥村 進;中里裕臣
• 通讯作者: 中里裕臣

小型ループ電磁法の探査特性

小环电磁法勘探特点

• 发表时间: 2008
• 作者: 重松愛二郎;佐々木裕;水永秀樹
• 通讯作者: 水永秀樹