Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40623-020-01347-3/MediaObjects/40623_2020_1347_Fig1_HTML.png)
Locations of the epicenter and strong ground motion observatories used in this study. They are indicated by the focal sphere and squares, respectively. Red contours denote the top depths of the seismic bedrock modeled by HERP (2009). The 2D S-wave velocity structures of the deep sedimentary layers were estimated along Line-1 to Line-3, represented by the thick black lines