S1: Dynamics of igneous processes (Special Session, Joint Session with The Volcanological Society of Japan) [Oral presentations are by invitation only; poster presentations are open to all.]

2:40 PM - 3:00 PM JST(5:40 AM - 6:00 AM UTC)Invited Lecture

[S1-01] Temporal Variations in Helium Isotope Ratios of Volcanic Gases and Volcanic Activity in the Kirishima Volcanic Group (2016–2026)

*Nanae Fukushima¹, Hirochika Sumino¹, Takeshi Ohba², Muga Yaguchi³, Jun-ichiro Ishibashi⁴, Yuki Yasuda⁵, Obase Tomoya⁶, Kotaro Toyama⁷, Rai Yoneda⁸, Takeshi Matsushima⁹ (1. RCAST, UTokyo, 2. Sch. of Sci. Tokai Univ., 3. MRI, JMA, 4. KOBEC, Kobe U, 5. ERI, UTokyo, 6. Sch. of Sci. Science Tokyo, 7. HSRI, 8. Sch. of Sci. UTokyo, 9. SEVO, Kyushu Univ.)

Keywords:

Volcanic gas,Helium isotope ratio,Phreatic eruption,Precise leveling survey,Kirishima

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