Long-term stability and transient increase in helium isotope ratios in the Kirishima volcano group: Signatures of deep magma injection

Rai Yoneda

Presentation information

[E] Oral

S (Solid Earth Sciences ) » S-GC Geochemistry

[S-GC45] Volatiles in the Earth - from Surface to Deep Mantle

Mon. May 25, 2026 1:45 PM - 3:15 PM Convention Hall (CH-B) (International Conference Hall, Makuhari Messe)

Chairperson:Sumino Hirochika(Research Center for Advanced Science and Technology, The University of Tokyo), Lee Hyunwoo(Seoul National University)

2:30 PM - 2:45 PM

[SGC45-16] Long-term stability and transient increase in helium isotope ratios in the Kirishima volcano group: Signatures of deep magma injection

*Rai Yoneda¹, Hirochika Sumino², Masataka Kawaguchi³, Yasuhisa Tajima⁴, Toshiaki Hasenaka⁵ (1. School of Science, The University of Tokyo, 2. Research Center for Advance Science and Technology, The University of Tokyo, 3. Earthquake Research Institute, The University of Tokyo, 4. Research and Development Center, Nippon Koei Co.,LTD., 5. Center for Water Cycle Marine Environment and Disaster Management, Kumamoto University)

Keywords:Volcano, Kirishima, Helium, Isotope, Inclusion