Analysis of Landslide Block Development Process Using Its Fractal Character

概要

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We collected data on 39 landslides and analyzed the fractal character of their block distributions and block development process. Correspondence analysis revealed that the fractal dimension correlates to the geometry of the landslide, discontinuities of the base rock, and activity level of the landslide. The fractal dimension is independent of the size of the landslide, angle of slide surface and slope, and geology of the base rock. The fractal character of landslide block distribution can be explained by self-similar geometry, the unique fractal dimension made by combining second and third level blocks, and the fractal erosional process. The preceding block's geometry influences propagation of subsequent blocks. Lineaments influence the propagation process of second level blocks. As erosion progresses, the fractal dimension decreases. The fractal character of landslide block distribution can be used to identify potential landslides and as a numerical index to describe landslides including their level of activity.
一般社団法人日本応用地質学会の論文
1996-04-10