Solid Earth Sciences (S)
Session Sub-category Volcanology(VC)
Session ID S-VC33
Title Mechanism of volcanic eruptions
Short Title Mechanism of volcanic eruptions
Main Convener Name Mayumi Mujin
Affiliation Hokkaido University
Co-Convener 1 Name Ryo Tanaka
Affiliation Hokkaido University,Institute of Seismology and Volcanology
Co-Convener 2 Name Takafumi Maruishi
Affiliation National Research Institute for Earth Science and Disaster Resilience
Co-Convener 3 Name Dan Muramatsu
Affiliation Earthquake Reserch Institute, The University of Tokyo
Session Language 
J
Scope 
Multiple processes are involved in volcanic eruptions, including magma accumulation at depth, vesiculation and crystallization during magma ascent in volcanic conduits, and dispersion of volcanic products. We will discuss the mechanism of volcanic eruptions to elucidate these processes and understand volcanic eruption phenomena from an integrated view. We welcome contributions from geophysical and geochemical observations of active/quiet volcanoes, petrological/geochemical measurements of eruptive products, theoretical approaches, numerical simulations, laboratory experiments, and interdisciplinary studies that combine the above approaches.
Presentation Format Oral and Poster presentation
Invited Authors Ayuta Tsuge (Volcano Research Center, Earthquake Research Institute, The University of Tokyo)
Time Presentation No Title Presenter
Oral Presentation May 26 AM1
9:00 - 9:15 SVC33-01 Effects of nanometer scale chemical and structural heterogeneities in silicate melt on magma crystallization Kazuhisa Matsumoto
9:15 - 9:30 SVC33-02 Pre-eruption process of the Kyoho eruption (1716-1717) of Shinmoedake, Kirishima volcano-Multi-stage magma mixing and magma mingling Yuki Suzuki
9:30 - 9:45 SVC33-03 Petrological constraints on shallow conduit processes during fountain-collapse pyroclastic flows in the Asama 1783 eruption. Takuma Muraki
9:45 - 10:00 SVC33-04 Magma ascent rates during the 1914 sub-Plinian eruption of Sakurajima, Japan inferred from the glass embayment water contents Nobuo Geshi
10:00 - 10:15 SVC33-05 Mechanism of Non-Eruptive Deflation (NED) events based on the analysis of volcanic ash at Sakurajima volcano, SW Japan Taketo Shimano
10:15 - 10:30 SVC33-06 Thermal Evolution of Axisymmetric Isoviscous Gravity Currents: Implications for Thermal Monitoring of Lava Domes Takafumi Maruishi
Oral Presentation May 26 AM2
10:45 - 11:15 SVC33-07 Eruption mechanism and diverse periodicity of Geysers—Observational and Numerical studies of Shikabe Geyser in southern Hokkaido, Japan Ayuta Tsuge
11:15 - 11:30 SVC33-08 Multi-site observations of SP and tilt at Onikobe Geyser, Miyagi Prefecture, Japan Harutou Tanabe
11:30 - 11:45 SVC33-09 Analysis of D-F Diagram Using Ashfall Simulation: Impact of Proximal Observational Data on Ashfall Distribution Assessment Toshitaka Sakai
11:45 - 12:00 SVC33-10 A volcanic ashfall simulation accounting for ash fingers Kosei Takishita
Presentation No Title Presenter
Poster Presentation May 26 PM3
SVC33-P01 Eruptive sequence and magma storage conditions of Plinian eruptions at Karakunidake,
Kirishima Volcano Group, Japan 		Zeena Suzuki
SVC33-P02 Textual analyses of the interstitial phases in the mushy gabbro: comparison between Fuji and Izu-Oshima volcanoes Kotone Nishigaya
SVC33-P03 Petrological characteristics of Tsumakoi-touge lava, Kampu volcano Yohei Koike
SVC33-P04 Decompression rate-dependence of groundmass texture of basaltic andesite magma: Comparison between Nishinoshima Ep. 4 and Izu-Oshima 1986B eruptions MORI YOHEI
SVC33-P05 Vesicles and crystals are often next to each other: A CT observation of the lava erupted at Unzen Volcano Konan Saito
SVC33-P06 Using Polarizer into Raman Spectroscopy for Knowing Amount of Dissolved H2O in Melt Inclusion in Opx Shota Kakisako
SVC33-P07 Synchrotron analyses of pumice to reveal the formation process of pyroclastic flow
- A case study of 7.6 ka Mashu and 14 ka Me-akan eruptions 		Kyohei Sano
SVC33-P08 A white pumice found in the Omuro scoria deposit of Fuji Volcano Nobuko Kametani
SVC33-P09 Distribution of the Kikai-Akahoya ash in central and southern Kyushu Yusuke Haruta
SVC33-P10 Numerical simulation analysis of crust subsidence during the magma intrusion process Yuuki Nagatsuka
SVC33-P11 Monitoring Volcanoes with InSAR: Insights into Earthquake-Volcano Coupling and Deformation Dynamics Giacomo Di Silvestro
SVC33-P12 Single Force Measurements Using Water and Air Jets from a PET Bottle Mie Ichihara
SVC33-P13 Waveform and spectral characteristics of pulse-like acoustic waves reproduced by analogy experiment of bubble bursting Dan Muramatsu
SVC33-P14 Experimental study about the mechanism of Strombolian eruption Ayumu Tanizawa