Estimation of molten sulfur generation environment at Shiretokoiozan volcano through comparison of the chemical composition and hydrogen and oxygen isotope ratios with hot spring waters in other volcanic lakes

Mutsunori Yamamoto

Presentation information

[E] Oral

A (Atmospheric and Hydrospheric Sciences ) » A-HW Hydrology & Water Environment

[A-HW34] Isotope hydrology 2026

Fri. May 29, 2026 10:45 AM - 12:15 PM 102 (International Conference Hall, Makuhari Messe)

Chairperson:Kashiwaya Koki(Graduate School of Engineering, Kyoto University), Gingerich Stephen(United States Geological Survey), Asai Kazuyoshi(Geo Science Laboratory), Nakamura Takashi(International Research Center for River Basin Environment, University of YAMANASHI), Yasuhara Masaya(Rissho Univ.)

11:40 AM - 11:55 AM

[AHW34-08] Estimation of molten sulfur generation environment at Shiretokoiozan volcano through comparison of the chemical composition and hydrogen and oxygen isotope ratios with hot spring waters in other volcanic lakes

*Mutsunori Yamamoto¹, Koki Kashiwaya², Katsuaki Koike² (1. Osaka Museum of Natural History, 2. Graduate School of Engineering, Kyoto University)

Keywords:Hydrogen and oxygen isotope ratios, Hot spring water, Andesitic water, Sulfur generating environment, Disproportionation reaction