Japan Geoscience Union Meeting 2016

Presentation information


Symbol S (Solid Earth Sciences) » S-VC Volcanology

[S-VC49] Real-time volcanology: Integration of geophysical and material science observations and physical modeling

Tue. May 24, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Satoshi Okumura(Division of Earth and Planetary Materials Science, Department of Earth Science, Graduate School of Science, Tohoku University), Tomofumi Kozono(Department of Geophysics, Graduate School of Science, Tohoku University), Yosuke Aoki(Earthquake Research Institute, University of Tokyo)

5:15 PM - 6:30 PM

[SVC49-P02] FEM modeling and GNSS observation around Mount Ontake volcan

*Takeo Ito1, Kenjiro Matsuhiro1 (1.Earthquake and Volcano Research Center, Graduate School of Environmental Studies, Nagoya University)

Keywords:GNSS, Mount Ontake volcano, FEM

On Septmber 27, 2014, Mount Ontake volcano was erupt. The eruption took 63 lives and represented the worst volcanic disaster in post-World War II Japanese history. Before this eruption, the GNSS observations are a few around Mount Ontake volcano. Especially, the number of GNSS observation within 4km from the summit of mount Ontake volcano is only one, which is belong to JMA. After the eruption, we establish GNSS observation network around mount Ontake volcano. New GNSS observation network around mount Ontake volcano are consistent of six continues GNSS sites. Two and four continues GNSS sites stared at 2014 and 2015, respectively. We also make seven campaign GNSS sites where are located at eastern side of mount Ontake volcano. These campaign GNSS sites are observed at July 2015.
In order to explain the observed crustal deformation, we make FEM model considering topography, such as shape of the mount Ontake volcano. In this poster, we introduce the new GNSS observation and FEM model for mount Ontake volcano.