[S-VC35] Hydrothermal systems of volcanoes

Sun. May 25, 2025 3:30 PM - 5:00 PM Convention Hall (CH-B) (International Conference Hall, Makuhari Messe)

convener:Yasuhiro Fujimitsu(Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University), Wataru Kanda(Multidisciplinary Resilience Research Center, Institute of Integrated Research, Institute of Science Tokyo), Muga Yaguchi(Meteorological Research Institute, JMA), Chairperson:Wataru Kanda(Multidisciplinary Resilience Research Center, Institute of Integrated Research, Institute of Science Tokyo), Muga Yaguchi(Meteorological Research Institute, JMA)

There is a diversity of hydrothermal systems between magmas and the ground surface in various geoscientific environments. Understanding of the hydrothermal systems contributes to understanding of the earth systems, and is essential for utilization of geothermal energy and prediction of volcanic eruption. In this session, we will discuss the topics on subsurface structures and heat and fluid flows of "hydrothermal systems of volcanoes" from the perspectives of geophysics, geochemistry, geology and geothermal reservoir engineering. Any research approaches, theoretical, observational and experimental, are welcome.

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3:30 PM - 3:45 PM

[SVC35-06] A confidence interval inference method of an electrical resistivity model and a smectite content estimation from the resistivity confidence interval beneath Zao volcano

*Masahiro Ichiki¹, Wataru Kanda², Toshiki Kaida¹, Masashi Ushioda^2,3, Kaori Seki^2,4, Satoshi Miura¹, Mare Yamamoto¹, Yuichi Morita^5,6, Makoto Uyeshima⁵ (1.Graduate School of Science, Tohoku University, 2.Institute of Integrated Research, Institute of Science Tokyo, 3.Department of Civil Engineering, Shikoku Research Institute Inc., 4.Meteorological Research Institute, Japan Meteorological Agency, 5.Earthquake Research Institute, The University of Tokyo, 6.Center for Integrated Volcano Research, National Research Institute for Earth Science and Disaster Resilience)

3:45 PM - 4:00 PM

[SVC35-07] Rock physics model for fault permeability by simultaneous measurement of electrical resistivity and seismic velocity

*Kazuki Sawayama¹, Jiei So¹ (1.Institute for Geothermal Sciences, Graduate School of Science, Kyoto University)

4:00 PM - 4:15 PM

[SVC35-08] Investigation of soil diffuse hydrogen sulfide flux measurement methods near fumarolic area.

*TOSHIYA MORI¹ (1.School of Sci., The Univ. of Tokyo)

4:15 PM - 4:30 PM

[SVC35-09] The nature of fumarolic gases collected at Ojigokudani, Iwate volcano, in September 2024

*Muga Yaguchi¹, Takeshi Ohba², Shun Kanno³ (1.Meteorol. Res. Inst., JMA, 2.Sch. Sci., Tokai Univ., 3.Sendai Regional Headquarters, JMA)

4:30 PM - 4:45 PM

[SVC35-10] Theoretical and Observational Research on Heterogeneous Geocheimcal Equilibria in the Hydrothermal System of Active Volcanoes

*Takumi Akiyama^1,2, Shinji Ohsawa¹ (1.Beppu Geothermal Research Laboratory, 2.Kyoto University, Graduate School of Engineering (Current Affiliation))

4:45 PM - 5:00 PM

[SVC35_25PM2-6add] Discussion

Session information