[E] Poster

S (Solid Earth Sciences ) » S-VC Volcanology

[S-VC40] Volcanic eruption dynamics and mechanisms: controlling physical and chemical processes

Wed. May 27, 2026 5:15 PM - 7:00 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

Volcanic eruptions encompass multiple interrelated phenomena, from magma accumulation at depth to vesiculation and crystallization during magma ascent in volcanic conduits, culminating in the dispersion of volcanic products. Advancing from physical and chemical processes to mechanisms and ultimately to eruption dynamics is necessary for a comprehensive understanding of volcanic eruption. A broad range of approaches is required to elucidate these subjects. 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.

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5:15 PM - 7:00 PM

[SVC40-P01] Evaluation of the source magnitude distribution (SMD) model based on tephra fall distribution

*Toshitaka Sakai¹, Yuta Mitsui¹, Kazutaka Mannen² (1. Shizuoka University, 2. Hot Springs Research Institute of Kanagawa Prefecture)

5:15 PM - 7:00 PM

[SVC40-P02] Morphological differences of pumice lapilli between pyroclastic fall and pyroclastic density current deposits: a case study of andesitic to rhyolitic eruptions in Japan

*Yusuke Haruta^1,2, Fukashi Maeno² (1. Department of Earth and Planetary Science, University of Tokyo , 2. Earthquake Research Institution, University of Tokyo)

5:15 PM - 7:00 PM

[SVC40-P03] Spatiotemporal relationship between a subsurface pressure source and groundwater flow: Observations at the Onikobe and Rausu Geysers, Japan

*Harutou Tanabe^1,3, Koki Aizawa², Takeshi Matsushima², Asumi Katsuyama³ (1. Japan Meteorological Agency, 2. Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 3. Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University)

5:15 PM - 7:00 PM

[SVC40-P04] Magma discharge rate estimation for historical sub-Plinian and Plinian eruptions in Japan using a 1-D steady volcanic plume model driven by reanalysis meteorological fields

*Tomofumi Kozono¹, Akito Tsuchiya² (1. National Research Institute for Earth Science and Disaster Resilience, 2. Department of Geophysics, Graduate School of Science, Tohoku University,)

5:15 PM - 7:00 PM

[SVC40-P05] Mathematical modeling of summit caldera collapse with dike deformation

*Sora Nishikawa¹ (1. Department of Geophysics, Graduate School of Science, Tohoku University)

5:15 PM - 7:00 PM

[SVC40-P06] What controls the explosive-to-effusive transition in the 2011-2012 Cordón Caulle eruption?

*JongGil Park¹, Helge M. Gonnermann¹ (1. Rice University)

5:15 PM - 7:00 PM

[SVC40-P07] Tensile deformation experiment of analog low-viscosity magma with varying strain rates and particle sizes

*Sayaka Oda¹, Atsuko Namiki¹ (1. Nagoya University)

5:15 PM - 7:00 PM

[SVC40-P08] The development of in-situ permeability measurement at magmatic temperature

*Takeru Ohata¹, Harumasa Kano², Atsuko Namiki³, Satoshi Okumura¹ (1. Tohoku University, 2. The Tohoku University Museum, 3. Nagoya University)

5:15 PM - 7:00 PM

[SVC40-P09] The Role of Gas Flushing in Strombolian Activity Within the Sakurajima Andesitic Eruption Cycle

*Haruto Abe¹, Michihiko Nakamura¹, Naoki Araya², Mayumi Mujin³, Daisuke Miki⁴, Masato Iguchi⁵, Masanari Arao¹ (1. Tohoku Univ., 2. AIST, 3. Hokkaido Univ., 4. Kyoto Univ., 5. Kagoshima city.)

5:15 PM - 7:00 PM

[SVC40-P10] Magma storage conditions and ascent processes of Vulcanian eruptions at Sakurajima Volcano inferred from magnetite chemistry: the uniqueness of the 24 August 1995 eruption

*Naoki Araya¹, Michihiko Nakamura², Nobuo Geshi³, Tetsuo Kobayashi⁴, Daisuke Miki⁴, Masato Iguchi⁵ (1. Geological Survey of Japan, AIST, 2. Graduate School of Science, Tohoku University, 3. Faculty of Sciences, Kyushu University, 4. Disaster Prevention Research Institute, Kyoto University, 5. Sakurajima Volcanic Disaster Risk Reduction Research Center, Kagoshima City)

5:15 PM - 7:00 PM

[SVC40-P11] Magma–air interactions within an eruption column: Insights from Scoria of the 1986 Sub-Plinian Eruption at Izu-Oshima Volcano

*Keiko Matsumoto¹ (1. Geological Survey of Japan, The National Institute of Advanced Industrial Science and Technology)

5:15 PM - 7:00 PM

[SVC40-P12] Relationship between groundmass crystal textures and eruption styles of mafic magma: A case study of the Izu-Oshima 1986 eruption

*Sora Sato¹, Hidemi Ishibashi¹, Akinori Miyashita², Natsumi Hokanishi³, Yasuda Atsushi³ (1. Faculty of Science, Shizuoka University, 2. Graduate School of Integrated Science and Technology, Shizuoka University, 3. Earthquake Research Institute, University of Tokyo)

5:15 PM - 7:00 PM

[SVC40-P13] Heterogeneous Textures Observed in the Groundmass of Ho-II Scoria from the 1707 Hoei Eruption of Fuji Volcano

*Yukako Kanegae¹, Hidemi Ishibashi¹ (1. Faculty of Science, Shizuoka University )

5:15 PM - 7:00 PM

[SVC40-P14] Microstructural features of a dacitic obsidian from Fuji volcano, Japan

*Haruna Yabutani¹, Hidemi Ishibashi¹, HOKANISHI Natsumi², Atsushi Yasuda², Kazutaka Mannen³ (1. Faculty of Science, Shizuoka University , 2. Earthquake Research Institute, University of Tokyo, 3. Hot Springs Research Institute of Kanagawa Prefecture)

Session information

[S-VC40] Volcanic eruption dynamics and mechanisms: controlling physical and chemical processes

[SVC40-P01] Evaluation of the source magnitude distribution (SMD) model based on tephra fall distribution

[SVC40-P02] Morphological differences of pumice lapilli between pyroclastic fall and pyroclastic density current deposits: a case study of andesitic to rhyolitic eruptions in Japan

[SVC40-P03] Spatiotemporal relationship between a subsurface pressure source and groundwater flow: Observations at the Onikobe and Rausu Geysers, Japan

[SVC40-P04] Magma discharge rate estimation for historical sub-Plinian and Plinian eruptions in Japan using a 1-D steady volcanic plume model driven by reanalysis meteorological fields

[SVC40-P05] Mathematical modeling of summit caldera collapse with dike deformation

[SVC40-P06] What controls the explosive-to-effusive transition in the 2011-2012 Cordón Caulle eruption?

[SVC40-P07] Tensile deformation experiment of analog low-viscosity magma with varying strain rates and particle sizes

[SVC40-P08] The development of in-situ permeability measurement at magmatic temperature

[SVC40-P09] The Role of Gas Flushing in Strombolian Activity Within the Sakurajima Andesitic Eruption Cycle

[SVC40-P10] Magma storage conditions and ascent processes of Vulcanian eruptions at Sakurajima Volcano inferred from magnetite chemistry: the uniqueness of the 24 August 1995 eruption

[SVC40-P11] Magma–air interactions within an eruption column: Insights from Scoria of the 1986 Sub-Plinian Eruption at Izu-Oshima Volcano

[SVC40-P12] Relationship between groundmass crystal textures and eruption styles of mafic magma: A case study of the Izu-Oshima 1986 eruption

[SVC40-P13] Heterogeneous Textures Observed in the Groundmass of Ho-II Scoria from the 1707 Hoei Eruption of Fuji Volcano

[SVC40-P14] Microstructural features of a dacitic obsidian from Fuji volcano, Japan

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