Fig. 15From: Global polygons for terrain classification divided into uniform slopes and basinsBox-and-whisker diagram of Vs30 for each of the terrain groups in this study (after Figs. 12 and 13) in the Kanto district, Japan (a). The Vs30 map (GIS data iare according to JSHIS v4: Senna et al. 2013, 2019) (b)Back to article page