流砂の道

Abstract

The author has engaged in the research on erosion, sediment transport and sedimentation for forty years since his graduation from Kyoto University in 1952 to the time of his retirement from Kyoto University in 1992.Firstly, he stressed the importance of field observation by taking an example from the results by Hodaka Sedimentary Observatory of disaster prevention research institute, Kyoto University which has continued the field study on sediment erosion and sediment transport since 1965. The authors found the existence of step-pool morphology which has an important influence on sediment transport process in mountain creek. This finding stimulated the fundamental investigation on step-pool problems and led to successful results.Secondly, he reviewed his study on the mechanism of sediment problems. His most interest in sediment research has been toward to the mechanism of the phenomena. He conducted the investigation of several sediment problem in mountain region and alluvial rivers. Among those some of the studies relating sediment transport, river bed variation and debris flow are reviewed in this paper.Lastly, he mentioned the phenomena relating to the catastrophic sediment disasters by taking some examples.