地すべりによる地形変形の一様相長野市茶臼山地すべりの例

概要

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The topography of a landslide area is, as a rule, considerably complicated. In landslide areas of the northern part of Nagano Prefecture, one important problem is the estimation of the kind of deformation added by landslide in the geomorphic process of mountainous landforms. In rockslide areas where landslides extend deep below the surface, geomorphic deformation occurs on a very large scale and the topography becomes very complicated. Rockslides take place in conjunction with various geologic structures but are especially notable where muddy acidic tuff exists in the base rock.<BR>As an example, this report deals with the landslide mechanism on Mt. Chausu and examines the unique features caused by geomorphic deformation. This landslide area features a rockslide with deep slide surface following its occurrence, and is not developed from a shallow layer slide. It should be noted that the topography formed by the landslide has a very specific character and that geomorphological development is completely different from that which existed prior to the landslide.
東北地理学会の論文