Effect of Noise from DC-Driven Trains to Geoelectrical Potential Difference and its Reduction in Hakuba Area, Japan

• Ishikawa Hisashi

  Graduate School of Science and Technology, Chiba University

• Hattori Katsumi

  Department of Earth Sciences, Faculty of Science, Chiba University

• Takahashi Ichiro

  Graduate School of Science and Technology, Chiba University

• Noda Yoichi

  Earthquake Prediction Research Center, Tokai University

• Nagao Toshiyasu

  Earthquake Prediction Research Center, Tokai University

• Isezaki Nobuhiro

  Department of Earth Sciences, Faculty of Science, Chiba University

抄録

The variations of geoelectrical potential differences in Hakuba area, Nagano Prefecture, Japan have been investigated. The noises originated from the DC-driven trains were found to contaminate the natural geoelectrical potential data. The most intense influence of trains occurred when the train was running nearby measuring dipoles. The gradient of the potential was deflected towards the railways and/or the position of the train, exhibiting a certain correlation between the power supply data at substation and the geoelectrical potential data at measuring sites. Extracting the high correlation part (r > 0.7), “idealized” train noise can be computed by the least square method. The reduction of train noise by more than 60 % was achieved by subtracting the idealized noise from observed data.

収録刊行物

• 電気学会論文誌．　Ａ

  電気学会論文誌．　Ａ 127 (1), 41-47, 2007

  一般社団法人 電気学会

キーワード

• geoelectrical potential difference
• DC-driven train noise
• reduction

詳細情報

• CRID: 1390001204593693696
• NII論文ID: 10018456909
• NII書誌ID: AN10136312
• DOI: 10.1541/ieejfms.127.41
• ISSN: 13475533
• ISSN: 03854205
• NDL書誌ID: 8624056
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8624056
• Web Site: http://www.jstage.jst.go.jp/article/ieejfms/127/1/127_1_41/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可