Japan Geoscience Union Meeting 2023

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[J] Oral

M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS10] Mountain Science

Fri. May 26, 2023 9:00 AM - 10:30 AM 201B (International Conference Hall, Makuhari Messe)

convener:Yoshihiko Kariya(Department of Environmental Geography, Senshu University), Akihiko SASAKI(Department of Geography and Environmental Studies, Kokushikan University), Chiyuki Narama(Niigata University, Program of Field Research in the Environmental Sciences), Motoshi Nishimura(Arctic Environmental Research Center, National Institute of Polar Research), Chairperson:Motoshi Nishimura(Arctic Environmental Research Center, National Institute of Polar Research), Akihiko SASAKI(Department of Geography and Environmental Studies, Kokushikan University), Chiyuki Narama(Niigata University, Program of Field Research in the Environmental Sciences), Yoshihiko Kariya(Department of Environmental Geography, Senshu University)

9:45 AM - 10:00 AM

[MIS10-04] Mass-movement on periglacial rubble slopes in the Hakuba mountain range.

Eri Fukada2, *Chiyuki Narama1 (1.Niigata University, Program of Field Research in the Environmental Sciences, 2.Niigata University, Graduate School of Science and Technology)

Keywords:Periglacial sediment slope, Freeze-thaw action, RTK-UAV, Hakuba mountain range

Spatial distribution of mass movement on three periglacial rubble slopes in the Hakuba mountain range was investigated using RTK-UAV aerial images and point cloud data generated by SfM-MVS processing from 2020 to 2022. Using UAV ortho aerial images, the three slopes were classified into five categories: soil, fine gravel area, large gravel area, vegetation, and bedrock. By comparing the orthorectified images of the UAV aerial images, we confirmed the movement of surface materials on all three periglacial fubble slopes. When we compared surface movement was remarkable in fine gravel area and soil area.