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Fig. 1 | Earth, Planets and Space

Fig. 1

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

Fig. 1

a Location of Ebinokogen Ioyama volcano (Io) on Kyushu Island (KI), Japan. The Philippine Sea Plate (PP) is subducting beneath the Eurasian Plate (EP) on which KI is situated. PP and EP are separated by the Nankai trough (NT). Circles and broken line indicate active volcanoes and the volcanic front, respectively. b Io surrounded by Ebinodake volcano (Ed), Karakunidake volcano (Kr), Shiratori-yama crater (Sy), Rokkannonmiike crater (Ro), and Fudoike crater (Fd). Kd is a debris avalanche deposit. P and W denote ponds and collapse walls, respectively. Eq denotes the region in which the volcanic earthquake hypocenters are distributed. Sm, Ss, Oy, Ks and On denote Shinmoedake volcano, Shishidodake volcano, Ohatayama volcano, Koshikidake volcano and Onamiike volcano, respectively. Bold red curves indicate the crater rim. c Location of fumaroles a, b, c and h. Phreatic eruptions took place at e1 and e2 on April 16 and 26, 2018, respectively. Hot spring water was discharged at K3 and Y1. R denotes roads

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