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Niizato, Tadafumi; Yasue, Kenichi; Shigeno, Kiyoyuki*; Miyasaka, Shogo*
no journal, ,
The landform in the Hokushin district, Horonobe, northern Hokkaido is developing under the influence of the "rock-control" based on the difference of drainage pattern, relief energy, drainage density, and distribution of landslide in each formation.
Kitazawa, Toshiyuki*; Shigeno, Kiyoyuki*; Koitabashi, Shigekazu*; Miyasaka, Shogo*; Niizato, Tadafumi; Hoyanagi, Koichi*
no journal, ,
Based on the sedimentary facies and sequence stratigraphical analysis, we can estimate the role of wave and flood in the formation of a tiny delta in the coarstal zone of the Horonobe area during the depositional period of the lower Sarabetsu Formation.
Niizato, Tadafumi; Shigeno, Kiyoyuki*; Miyasaka, Shogo*; Koitabashi, Shigekazu*
no journal, ,
A critical issue to assess the long-term safety of geological disposal system is to demonstrate the stability of the geosphere, taking into account its likely future evolution over geological time. In this study, we have constructed the conceptual models for geomorphic evolution in the Horonobe area, Hokkaido, northern Japan based on the results of air-photographic interpretation, topographic and geological surveys, age-determination of landforms and sedimentary formations, and pollen analysis. The landforms in the area have been evolving under the control of not only a climate as external factor but also surface geology which the landform had developed.