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Earth, Planets and Space
Fig. 10 | Earth, Planets and Space

Fig. 10

From: Time variations in the chemical and isotopic composition of fumarolic gases at Hakone volcano, Honshu Island, Japan, over the earthquake swarm and eruption in 2015, interpreted by magma sealing model

Fig. 10

Correlation between δ18O of H2O and CO2/H2O ratio. The bold line on y-axis indicates the vapor phase generated from local meteoric water (L) at 100 °C. M: magmatic H2O with CO2 (900 °C), L: local meteoric water (15 °C), V: H2O vapor with CO2 (265 °C), A: condensation of H2O vapor with CO2 at 100 °C. In the figures (a) and (b), the CO2/H2O ratio of M was set to be 0.0045 and 0.013, respectively

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