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Earth, Planets and Space
Fig. 1 | Earth, Planets and Space

Fig. 1

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. 1

Location of Hakone volcano and the sampling points of fumarolic gases. a Map of the Japan and the location of Hakone volcano. b Topographic map of Hakone volcano with caldera structure. The bold dashed curve outlines the caldera rim. L, Ka and Ko represent Lake Ashinoko, Kamiyama central cone and Komagatake central cone, respectively. The ellipses marked E1, E2, E3, E4 and E5 indicate regions of hypocenters of earthquake swarms determined by Hot Springs Research Institute of Kanagawa Prefecture (HSRI). c Solid circles (N and S) indicate the fumaroles where volcanic gas was sampled in this study. Solid diamond (C) is the newly created crater at the eruption in 2015. Open circles and open square indicate location of other fumaroles (circles) and borehole, respectively. Bold lines and curves with teeth indicate the roads and cliffs, respectively

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