Fig. 6From: Solidified magma reservoir derived from active source seismic experiments in the Aira caldera, southern Kyushu, JapanTomography results in the 200 m cell model: (a) velocity distribution, (b) standard deviation distribution, and (c) ray density distribution. In (a), the solid black inverse triangles represent the onshore explosive sources (SP1–SP9) and vibroseis sources (VA, VC), and blue lines indicate the offshore airgun sourcesBack to article page