THE EFFECTS OF TOPOGRAPHIC CONVERGENCE AND LOCATION OF PAST LANDSLIDES ON SUBSURFACE WATER MOVEMENT ON GRANITIC HILLSLOPE

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概要

• 論文の詳細を見る

• Detailed soil moisture tension data of convergence of subsurface flow into a hollow were obtained in Obara Village, central Japan, where many landslides had occurred in 1972. For a heavy rainfall, the shape of the hillslope plan favours convergence of subsurface water flowing into the center of the hollow and especially small contour curvature radius is essential for the upslope area. The flow concentration in cross section was found : intense storm throughflow was detected just upslope of the past landslide scar. This was due to the combination of the trenching effect, due to the creation of a face caused by past landslides, and by the abrupt change in regolith properties, which induces saturated conditions. Therefore, such a concentration of subsurface water results not only from contour curvature of a hollow but also from the location of past landslides.

• 日本自然災害学会の論文

著者

• Mori Ayako

  Suncoh Consultants

• ONDA Yuichi

  Laboratory of Soil and Water Conservation, Department of Forestry, Nagoya University

• SHINDO Shizuo

  Department of Earth Science, Chiba University

• Onda Yuichi

  Laboratory Of Soil And Water Conservation Department Of Forestry Nagoya University

• Onda Yuichi

  Laboratory Of Forest Hydrology And Erosion Control Engineering School Of Agricultural Science Nagoya

• Shindo Shizuo

  Department Of Earth Science Chiba University

関連論文

• THE EFFECTS OF TOPOGRAPHIC CONVERGENCE AND LOCATION OF PAST LANDSLIDES ON SUBSURFACE WATER MOVEMENT ON GRANITIC HILLSLOPE
• Reply to the Preceding Comment by N. Caine on 'Is the Maximum Stable Angle of Slope of Granular Assemblies Comparable to the Angle of Shearing Resistance?'

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