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Earth, Planets and Space
Fig. 9 | Earth, Planets and Space

Fig. 9

From: Behavior of magmatic components in fumarolic gases related to the 2018 phreatic eruption at Ebinokogen Ioyama volcano, Kirishima Volcanic Group, Kyushu, Japan

Fig. 9

a δD and δ18O of H2O in fumarolic gas with the calculated vapor phase (Vp) and liquid phase (Lp). Vp-100 and Vp-160 denote Vp of 100 °C and 160 °C, respectively. Lp-100 and Lp-160 denote Lp at the temperature of 100 °C and 160 °C, respectively. The broken lines annotated as Cd indicate the isotopic ratio of remaining water vapor after partial condensation. V-100, 150 and 200 are the isotopic ratios of water vapor equilibrated with liquid L at 100 °C, 150 °C, and 200 °C, respectively. b Magnified Ar fraction, mF(Ar), and δ18O of H2O in fumarolic gases with Vp-100 and Vp-160. vLW indicates the vapor phase generated from local meteoric water (LW)

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