11:45 AM - 12:00 PM
[MIS13-17] Application of Quaternary organic sediments filling landslide-induced depressions to paleoenvironmental and paleoecological studies in the Japanese Alps
Keywords:deep-seated gravitational slope deformation, landslide, Quaternary sciences, alpine-subalpine zones
Here, we will demonstrate some examples of geomorphic features, distributions, and historical developments of landslide-induced depressions particularly those in the Japanese Alps in central Japan. We also show geologic and chronological evidences of organic-rich sediments in the depressions. In addition, we show a method of drilling and excavation on depressions using portable instruments. The areas introduced are Mts. Asahi-dake, Shirouma-dake, Eboshi-dake, Tsugaike Plateau, Takamagahara basin, Kamikochi Valley, and so on. We will discuss and share the efficacy and future possibility of organic-rich sediments in landslide-induced depressions for integrated studies of environmental changes in the Japanese high mountains.