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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

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

Fig. 5

a Changes in the hydrogen isotopic ratio (δD) of H2O. Red histogram and vertical lines have the same meaning as in Fig. 3. b Changes in the oxygen isotopic ratio (δ18O) of H2O. c Changes in the hydrogen isotopic ratio (δD) of H2. d δD and δ18O of H2O in fumarolic gas. AMW denotes the general region of magmatic water emitted from andesitic magma. K3 denotes the isotope ratio of local meteoric water. Broken lines show the simple mixing relationship between AMW and K3. LW denotes the local meteoric water line

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