[S-VC31] Active Volcanism

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

convener:Yuta Maeda(Nagoya University), convener:Fukashi Maeno(Earthquake Research Institute, University of Tokyo), Takeshi Matsushima(Institute of Seismology and Volcanology, Faculty of Science, Kyushu University), Chairperson:Akihiko Tomiya(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), TOSHIYA MORI(The University of Tokyo)

This session discusses various aspects of active volcanisms including, but not limited to, rec
ent and historical eruptions, various phenomena associated with the volcanic activities, und
erground structures of the volcanoes, and developments of new instruments based on geop
hysical, geochemical, geological, and multidiscipline approaches. We also welcome studies o
n understanding and predicting the transitions of the eruptive activities from observational,
theoretical, and experimental approaches.

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1:45 PM - 2:00 PM

[SVC31-11] Why was the 2000 eruption of Usu volcano not a sub-Plinian eruption?

*Akihiko Tomiya¹ (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology)

2:00 PM - 2:15 PM

[SVC31-12] Characteristics and transition of erupted magma in large-scale silicic pyroclastic eruptions of Asama volcano

*Kazunori Zushida¹ (1.The University of Tokyo)

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)

2:45 PM - 3:00 PM

[SVC31-15] Determination on the stable hydrogen and oxygen isotopic composition of water vapor in the volcanic plume emitted from Nakadake crater, Aso volcano, just after the eruption in October 2021

*Urumu Tsunogai¹, Masanori Ito¹, Yuhei Morishita¹, Fumiko Nakagawa¹, Shin Yoshikawa², Mitsuru Utsugi², Akihiko Yokoo² (1.Graduate School of Environmental Studies, Nagoya University, 2.Graduate School of Science, Kyoto University)

3:00 PM - 3:15 PM

[SVC31-16] Sulfur dioxide flux from Sakurajima volcano observed by a zenith SO₂ amount measuring network: The flux variations before the explosive eruptions

*TOSHIYA MORI¹ (1.The University of Tokyo)

Session information

[S-VC31] Active Volcanism

[SVC31-11] Why was the 2000 eruption of Usu volcano not a sub-Plinian eruption?

[SVC31-12] Characteristics and transition of erupted magma in large-scale silicic pyroclastic eruptions of Asama volcano

[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

[SVC31-15] Determination on the stable hydrogen and oxygen isotopic composition of water vapor in the volcanic plume emitted from Nakadake crater, Aso volcano, just after the eruption in October 2021

[SVC31-16] Sulfur dioxide flux from Sakurajima volcano observed by a zenith SO₂ amount measuring network: The flux variations before the explosive eruptions

Authentication

Session information

[S-VC31] Active Volcanism

[SVC31-11] Why was the 2000 eruption of Usu volcano not a sub-Plinian eruption?

[SVC31-12] Characteristics and transition of erupted magma in large-scale silicic pyroclastic eruptions of Asama volcano

[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

[SVC31-15] Determination on the stable hydrogen and oxygen isotopic composition of water vapor in the volcanic plume emitted from Nakadake crater, Aso volcano, just after the eruption in October 2021

[SVC31-16] Sulfur dioxide flux from Sakurajima volcano observed by a zenith SO2 amount measuring network: The flux variations before the explosive eruptions

Authentication

[SVC31-16] Sulfur dioxide flux from Sakurajima volcano observed by a zenith SO₂ amount measuring network: The flux variations before the explosive eruptions