[S-VC43] Active Volcanism

Tue. May 26, 2026 10:45 AM - 12:15 PM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

Chairperson:Matsumoto Satoshi(Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University), Nishimura Takeshi(Department of Geophysics, Graduate School of Science, Tohoku University)

This session discusses various aspects of active volcanisms including, but not limited to, recent and historical eruptions, various phenomena associated with the volcanic activities, underground structures of the volcanoes, and developments of new instruments based on geophysical, geochemical, geological, and multidiscipline approaches. We also welcome studies on understanding and predicting the transitions of the eruptive activities from observational, theoretical, and experimental approaches.
This session is categorized as a J-session; however, slides and posters may be prepared in English, and presentations in English are also welcome.

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10:45 AM - 11:00 AM

[SVC43-07] Seismic velocity characteristics beneath active volcanoes in Japan

*Takeshi Nishimura¹, Makoto MATSUBARA² (1. Department of Geophysics, Graduate School of Science, Tohoku University, 2. NIED)

11:00 AM - 11:15 AM

[SVC43-08] Imaging the three-dimensional S-wave velocity structure beneath the Aira caldera using dense nodal seismic observations

*Ryota Takagi¹, Tomoya Takano², Shun Fukushima³, Takashi Hirose¹, Hisashi Nakahara¹, Takeshi Nishimura¹, Taishi Yamada⁴, Takeshi Tameguri⁴, Haruhisa Nakamichi⁴, Hiroshi Yakiwara⁵ (1. Graduate School of Science, Tohoku University, 2. National Research Institute for Earth Science and Disaster Resilience, 3. Graduate School of Science, Hokkaido University, 4. Disaster Prevention Research Institute, Kyoto University, 5. Graduate School of Science and Engineering, Kagoshima University)

11:15 AM - 11:30 AM

[SVC43-09] Relationship between 3D seismic velocity structure and seismic activity beneath Aira Caldera and Sakurajima

*Takeshi Tameguri¹, Daisuke Miki¹, Tomoki Tsutsui¹ (1. Research Center for Volcano Hazards Mitigation, Disaster Prevention Research Institute, Kyoto University)

11:30 AM - 11:45 AM

[SVC43-10] Stress and strength properties around Kirishima volcano, Kyushu, Japan estimated by first P wave polarity data

*Satoshi Matsumoto¹, Issei Hirata², Yushi Nagayama², Kentaro Emoto¹, Takeshi Matsushima¹, Mie Ichihara³, Yohei Yukutake³, Hiroshi Yakiwara⁴ (1. Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University, 2. Graduate School of Science, Kyushu University, 3. Earthquake Research Institute, University of Tokyo, 4. Nansei-toko observatory for Earthquakes and Volcanoes, Kagoshima University)

Discussion (11:45 AM - 12:15 PM)

Session information