Japan Geoscience Union Meeting 2018

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[JJ] Oral

M (Multidisciplinary and Interdisciplinary) » M-GI General Geosciences, Information Geosciences & Simulations

[M-GI25] Environmental changes in mountainous area

Tue. May 22, 2018 9:00 AM - 10:30 AM A08 (Tokyo Bay Makuhari Hall)

convener:Keisuke Suzuki(Department of Environmental Sciences, Faculty of Science, Shinshu University), Yoshihiko Kariya(Department of Environmental Geography, Senshu University), Chiyuki Narama(新潟大学理学部理学科, 共同), Akihiko SASAKI(Department of Geography and Environmental Studies, Kokushikan University), Chairperson:Kariya Yoshihiko(専修大学)

9:15 AM - 9:30 AM

[MGI25-02] The change of landforms around Hakuba-Daissekei, the Northern Japanese Alps.

Hitomi Hata1, *Chiyuki Narama2 (1.Niigata University, Graduate school of Science and Technology, 2.Niigata University, Department of Science)

Keywords:rockfall, rick slip, snow patch

Shirouma-Daisekkei is one of the three largest snow patches in the Japanese Alps. More than 10,000 climbers pass on the snow patch every year. On the other hand, the rockfall accident at Shirouma-Daisekkei is the largest number of mountaineering accidents except for the slipping down accidents that occurred in 1992 - 2013 in the mountains of Japan. In August 2005, rock slip at the rock wall of Shakushi-dake causes injured two people, and also in August 2008, rock slip at upper part of snow patch causes two climbers sacrificed (Kariya et al. 2008). In this research, we attempted to clarify the topography change around Shirouma-Daisekkei using field survey conducted from 2015 to 2017 and airborne laser data.