Tue. May 24, 2022 1:45 PM - 3:15 PM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-VC Volcanology

[S-VC33] Hydrothermal systems of volcanoes

convener:Yasuhiro Fujimitsu(Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University), convener:Wataru Kanda(Volcanic Fluid Research Center, School of Science, Tokyo Institute of Technology), Takeshi Ohba(Department of chemistry, School of Science, Tokia University), Chairperson:Yasuhiro Fujimitsu(Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University), Takeshi Ohba(Department of chemistry, School of Science, Tokia University)

Tue. May 24, 2022 3:30 PM - 5:00 PM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-VC Volcanology

[S-VC33] Hydrothermal systems of volcanoes

convener:Yasuhiro Fujimitsu(Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University), convener:Wataru Kanda(Volcanic Fluid Research Center, School of Science, Tokyo Institute of Technology), Takeshi Ohba(Department of chemistry, School of Science, Tokia University), Chairperson:Takeshi Ohba(Department of chemistry, School of Science, Tokia University), Wataru Kanda(Volcanic Fluid Research Center, School of Science, Tokyo Institute of Technology)

Wed. May 25, 2022 1:45 PM - 3:15 PM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-VC Volcanology

[S-VC31] Active Volcanism

2:15 PM - 2:30 PM

[SVC31-13] Relationship between the rate of increase in the He/CH4 ratio of volcanic gas and the number of earthquakes at Mt Hakone

*Takeshi Ohba¹, Muga Yaguchi², Nozomi Numanami¹, Seiya Toyoshima¹ (1.Department of chemistry, School of Science, Tokia University, 2.Meteorol. Res. Inst.)

2:30 PM - 2:45 PM

[SVC31-14] A Study on Sulfur Isotope Ratios in Hakone Volcanic Gas

*Seiya Toyoshima¹, Takeshi Ohba¹, Nozomi Numanami¹, Muga Yaguchi² (1.Tokai University, 2.Meteorological Research Institute, JMA)

Tue. May 24, 2022 3:30 PM - 5:00 PM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-VC Volcanology

[S-VC33] Hydrothermal systems of volcanoes

4:00 PM - 4:15 PM

[SVC33-09] Temporal variations in helium and carbon isotopic compositions of fumarolic gases from Ioyama volcano, Kirishima volcanic group

*Tomoya Obase¹, Hirochika Sumino¹, Kotaro Toyama¹, Takeshi Ohba², Muga Yaguchi³, Jun-ichiro Ishibashi⁴ (1.The University of Tokyo, 2.Tokai University, 3.Meteorological Research Institute, Japan Meteorological Agency, 4.Kobe University)

Fri. May 27, 2022 1:45 PM - 3:15 PM 203 (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-VC Volcanology

[S-VC34] Monitoring and assessment of volcanic activities

2:20 PM - 2:35 PM

[SVC34-09] Quantitative assessment of temporal changes in subaqueous fumarolic activity based on a time-series of lake water chemistry in active crater lakes at Kusatsu-Shirane volcano, Japan

*Akihiko Terada¹, Leona Suzuki¹, Muga Yaguchi², Takeshi Ohba³ (1.Volcanic Fluid Research Center, Tokyo Institute of Technology, 2.Meteorological Research Institute, Japan Meteorological Agency, 3.Department of Chemistry, School of Science, Tokai University)

Takeshi Ohba

Convener, Chairperson

[S-VC33] Hydrothermal systems of volcanoes

[S-VC33] Hydrothermal systems of volcanoes

Speaker, Author, Co-Author

[S-VC31] Active Volcanism

[SVC31-13] Relationship between the rate of increase in the He/CH4 ratio of volcanic gas and the number of earthquakes at Mt Hakone

[SVC31-14] A Study on Sulfur Isotope Ratios in Hakone Volcanic Gas

[S-VC33] Hydrothermal systems of volcanoes

[SVC33-09] Temporal variations in helium and carbon isotopic compositions of fumarolic gases from Ioyama volcano, Kirishima volcanic group

[S-VC34] Monitoring and assessment of volcanic activities

[SVC34-09] Quantitative assessment of temporal changes in subaqueous fumarolic activity based on a time-series of lake water chemistry in active crater lakes at Kusatsu-Shirane volcano, Japan