Fig. 16

Displacement lineaments and up–down map around the northwest of outer rim of Aso caldera. The area under study is depicted in Figs. 12 and Additional file 1: S1. a High-pass-filtered up–down displacement map created using 3D InSAR of ALOS-2 (Fujiwara et al. 2016). Red and blue areas represent up and down displacements, respectively; black solid lines indicate the identified displacement lineaments; A–B and C–D represent the cross-sections depicted in Fig. 17. b Map of difference in vertical displacement between northern and southern sides along each displacement lineament. Black solid lines indicate the identified displacement lineaments