JpGU-AGU Joint Meeting 2017

Presentation information

[JJ] Poster

S (Solid Earth Sciences) » S-VC Volcanology

[S-VC49] [JJ] Mitigation of Volcanic disaster - Basic and applied research

Sat. May 20, 2017 3:30 PM - 5:00 PM Poster Hall (International Exhibition Hall HALL7)

convener:Mitsuhiro Yoshimoto(Mount Fuji Research Institute, Yamanashi Prefectural Government), Kazutaka Mannen(Hot Springs Research Institute of Kanagawa Prefecture), Shinji Takarada(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Hisashi Sasaki(Asia Air Survey Co., Ltd.)

[SVC49-P04] Characteristics of lahar and avalanche from snowmelt in Mount Fuji

*Jiro Komori1 (1.Teikyo Heisei University)

Keywords:slash avalanche, volcanic mudflow, yukishiro, spatiotemporal trend, extratropical cyclone, ice layer

In Mount Fuji, a large isolated mountain, mudflow disasters occur subsequent to major snow avalanches. Such avalanche and related phenomenon, in other words “slush lahar (Anma, 2007)” is found to be caused by contraseasonal warm weather with heavy rain of extratropical low in the Sea of Japan (Hirose, 1970). In addition, the climatic condition in case of the avalanche, it is clarified from the weather data of the summit and the piedmont area. This presentation shows a tendency to appearance of these pressure pattern based on long-term data in Japan Meteorological Agency. Furthermore, the author tries to explain the tendency of the collapse location and time of these avalanches, based on the data of field survey and seismic data of NIED in Mount Fuji.