[S-VC36] Volcanic and igneous activities, and these long-term forecasting

[SVC36-P05] Synchrotron-based constraints on Fe³⁺/Fe_tot ratios and silicate bonding: Implications for pyroclastic flow formation in the 7.6 ka Mashu and 14 ka Me-akan eruptions

*Kyohei Sano¹, Tetsuo Harada², Shinji Yamakawa², Eiichi Sato³, Keiji Wada³ (1. Graduate School of Regional Resource Management, University of Hyogo, 2. Laboratory of Advanced Science and Technology for Industry, University of Hyogo, 3. Earth Science Laboratory, Course of Subjects Education, Graduate School of Education, Hokkaido University of Education at Asahikawa)

Keywords:synchrotron analysis, Fe L-edge, Si L-edge, pyroclastic flow