二次元電気探査による重力性変形地形浅層部の可視化の試み

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タイトル別名
  • Preliminary Study for Visualizing the Subsurface Structure of Gravitational Deformation Slopes Using Electrical Resistivity Tomography
  • ニジゲン デンキ タンサ ニ ヨル ジュウリョクセイ ヘンケイ チケイセンソウブ ノ カシカ ノ ココロミ

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抄録

 Sackung features (scarps) have developed extensively in the Japanese Alps as a result of gravitational deformation. Electrical resistivity tomography was applied to evaluate the internal structure below eight scarps located above 2600 m a.s.l. The range of resistivity values differed significantly between the scarps and is mainly controlled by the moisture content of the ground. High- and low-resistivity areas were distinctly separated below some scarps. Areas of relatively low resistivity are considered as slightly fractured bedrock. In contrast, areas of high resistivity are likely to indicate highly fractured bedrock and/or talus without matrix. Such boundaries between high- and low-resistivity areas seem to correspond to fracture planes estimated from topography.

収録刊行物

  • 地学雑誌

    地学雑誌 122 (4), 755-767, 2013

    公益社団法人 東京地学協会

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