Fig. 5From: Rupture process of the main shock of the 2016 Kumamoto earthquake with special reference to damaging ground motions: waveform inversion with empirical Green’s functionsRelation between the first-time-window triggering velocity and the variance reduction VR (%). The VR is defined in Eq. (8). The results correspond to Case 1; VR takes the maximum value at the triggering velocity of 2.1 km/sBack to article page