Fig. 2

Three-component PGA for the 2016 Kumamoto earthquake. a PGA map for the Kumamoto earthquake and the triggered Oita earthquake. b PGA map for the Kumamoto earthquake, excluding the triggered earthquake. PGA values were observed at K-net and KiK-net stations (circles), and the map was generated by smoothing these values. White stars represent the epicenters of the Kumamoto earthquake and (in 2a only) the triggered earthquake