Fig. 2From: 2014 Mount Ontake eruption: characteristics of the phreatic eruption as inferred from aerial observations a Distribution of the eruption vents on September 28, 2014. b Eruption vents in the Jigokudani valley at 14:13 on September 27 and c at 16:44 on September 27. The topographic base map was produced using a GSI map issued by the Geospatial Information Authority of JapanBack to article page