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Fig. 7 | Earth, Planets and Space

Fig. 7

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

Fig. 7

Magma degassing and transport estimated from the correlation between changes in AETS and eruptions at Shinmoedake volcano (Sm). a Local situation in May 2017. A large flux of magmatic vapor (MV) was supplied to the aquifer beneath Ioyama volcano (Io). No magma was transported to Sm from the shallow magma chamber (SMC). The sealing zone (SZ) surrounding the SMC was open. b Local situation between September 2017 and January 2018. MV emission was prevented by SZ. Simultaneously, magma (M) was transported to Sm, causing a magmatic eruption. c Local situation between February and April 2018. A break in the SZ caused a large flux of MV to be supplied to Io. Magma was also transported to Sm. The flux of magma from the deep magma chamber (DMC) is likely to have increased from February to April 2018. d Changes in the apparent equilibrium temperature (AETS). Red histogram and vertical lines have the same meaning as in Fig. 3

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