Abstract

More than 12,800 deep-seated landslides of Hokkaido were inventoried by photointerpretation, and plotted in topographic maps (Yamagishi,1993). They were later published in a database of land-slides (Yamagishi et al.,1997), which is composed of localities (latitude and longitude), scales (length, width and area), elevation, directions, and geologic lithofacies of the main scarp and underlying bedrock. Several parameters of the landslides from the database, such as frequency histograms, scale, elevation, direction and lithofacies were analyzed. As a result, landslide distribution maps from many points of view were obtained, as well as many graphs by numerical analyses.

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