[S-VC45] Hydrothermal systems of volcanoes

Mon. May 23, 2016 3:30 PM - 5:00 PM 201A (2F)

Convener:*Yasuhiro Fujimitsu(Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University), Tsuneomi Kagiyama(Graduate School of Science, Kyoto University), Takeshi Ohba(Department of chemistry, School of Science, Tokia University), Chair:Yasuhiro Fujimitsu(Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University), Takeshi Ohba(Department of chemistry, School of Science, Tokia University)

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

[SVC45-01] Volcanic activity of Mt Kusatsu-Shirane suggested by the variations in fumarolic gas composition and crater lake water chemistry

*Takeshi Ohba¹, Muga Yaguchi¹, Soichiro Kumehara¹, Akihiko Terada² (1.Department of chemistry, School of Science, Tokai University, 2.Volcanic Fluid Research Center, Tokyo Inst. Tech.)

3:45 PM - 4:00 PM

[SVC45-02] Hydrothermal system beneath the Jigokudani valley, Tateyama volcano

*Kaori Seki¹, Wataru Kanda², Toshiya Tanbo³, Takeshi Ohba⁴, Yasuo Ogawa², Shinichi Takakura⁵, Kenji Nogami², Masashi Ushioda⁵, Atsushi Suzuki¹, Zenshiro Saito¹, Yasuo Matsunaga¹ (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2.Volcanic Fluid Research Center, Tokyo Institute of Technology, 3.Tateyama Caldera Sabo Museum, Toyama Prefecture, 4.Department of Chemistry, Tokai University, 5.National Institute of Advanced Industrial Science and Technology)

4:00 PM - 4:15 PM

[SVC45-03] The effect of the change of geothermal system for the scaling on surface facilities

*Norio Yanagisawa¹ (1.Institute for Geo-Resources and Envioronment, National Institute of Advanced Industrial Science and Technology)

4:15 PM - 4:30 PM

[SVC45-04] Numerical model of temporal changes in magnetic total field and ground deformation due to hydrothermal system in volcanoes (1). - A case study on Tokachi-dake volcano, Japan –

*Ryo Tanaka¹, Takeshi Hashimoto¹, Tsuneo Ishido², Nobuo Matsushima² (1.Hokkaido University, 2.AIST)

4:30 PM - 4:45 PM

[SVC45-05] Mass budgets of hydrothermal water beneath hot crater lakes at Kusatsu-Shirane volcano evaluated by ground deformation and changes in thermal activities

*Akihiko Terada¹, Yuri Sakamoto¹, Wataru Kanda¹, Yasuo Ogawa¹ (1.Volcanic Fluid Research Center, Tokyo Institute of Technology)

4:45 PM - 5:00 PM

[SVC45-06] Physical structure in pillars of granite porphyry surrounded by columnar joints

*Yasuto Hirata¹, Masahiro Chigira² (1.Graduate School of Science,Kyoto University, 2.Disaster Prevention Research Institute, Kyoto University)