5:15 PM - 6:30 PM
[MGI20-P14] Large-scale bedrock landslide and the evolution of natural history in Kamikochi Valley, northern Japanese Alps
Keywords:Large-scale bedrock landslide, Natural history, Landscape evolution, Last Glacial , Holocene
For example, Bentensawa (6-7 ka) and Myojinike (age unknown) rock avalanches caused a river obstruction forming dammed lake or flood plain. Dakesawa rock avalanche (past 1000 yrs?) produced block field without surficial fine materials such like a block stream. Genbunsawa rock avalanche (4 ka) caused many hummocks 5-10 m high.
Landslide deposits have created unique natural environments different from outside landslide areas, which would have caused unique landscape. In this meeting, we will show chronological tables (14C and TCN), geomorphological maps, oblique airphotos all of which focuses on bedrock landslide phenomena in Kamikochi Valley.