Map of study area (a) and distribution of relocated hypocenters (black dots) along with cross-sectional views of 16,797 events that were used for the inversion in this study (b). The fault traces (red lines) and abbreviated names of segments of the Yamasaki fault system are also shown. OF is Ohara Fault, HF is Hijima Fault, KF is Kuresaka-Toge Fault, YF is Yasutomi Fault, BF is Biwako Fault, and MF is Miki Fault. The green rectangle indicates the area of Fig. 2.