[S-VC49] 火山現象の即時理解：地球物理・物質科学観測と物理モデルの統合

[SVC49-P02] 御嶽火山周辺のGNSS観測と有限要素法によるモデリング

*伊藤 武男¹、松廣 健二郎¹ (1.名古屋大学大学院環境学研究科附属 地震火山研究センター)

キーワード：GNSS、御嶽火山、有限要素法

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.