Fig. 4

a Map projection of the total slip distribution for the M 7.3 event. Slip contour interval is 0.8 m. The star denotes the rupture starting point. Sky blue and gray circles denote the hypocenters of aftershocks (M ≥ 1) 1 day and 1 month after the M 7.3 event, respectively, which were determined by the NIED Hi-net. Circle sizes indicate event magnitudes. Open triangles denote stations used in the analysis. b Perspective illustration of the total slip distribution (azimuth: 310°, elevation: 20°). c Planar projection of the total slip distribution. The vectors denote the direction and the amount of the slip of the hanging wall side. The rectangles with orange, green, and purple broken lines indicate the areas with large slips defined in this study, i.e., Areas 1, 2, and 3, respectively