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

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概要

• 論文の詳細を見る

• 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.

• 社団法人 電気学会の論文
• 2007-01-01

著者

• TAKAHASHI Ichiro

  Graduate School of Science and Engineering, Yamagata University

• Nagao Toshiyasu

  Inst. Of Oceanic Res. And Developments Tokai Univ.

• Nagao Toshiyasu

  Earthquake Prediction Res. Center Tokai Univ.

• Hattori Katsumi

  Department Of Earth Sciences Faculty Of Science Chiba University

• ISEZAKI Nobuhiro

  Department of Earth Sciences, Faculty of Science, Chiba University

• Hattori K

  Chiba University

• Noda Yoichi

  Earthquake Prediction Research Center Tokai University

• ISHIKAWA Hisashi

  Graduate School of Science and Technology, Chiba University

• Isezaki Nobuhiro

  Department Of Earth Science Chiba University

• Ishikawa Hisashi

  Chiba Univ.

• Ishikawa Hisashi

  Graduate School Of Science And Technology Chiba University

• Takahashi Ichiro

  Graduate School Of Science And Technology Chiba University

• Takahashi Ichiro

  Graduate School Of Engineering Hokkaido University

• Isezaki Nobuhiro

  Department Of Earth Sciences Faculty Of Science Chiba University

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