Fig. 2

Fault model, 24-hour aftershock distribution, cross sections, and focal mechanisms. a Relocated aftershock distribution. b Cross section of the region between the purple lines in a viewed from N170°E. c Cross section viewed from N80°E. The blue lines indicate the fault model with the two planes. The yellow circles indicate the epicenter/hypocenter of the aftershock and their size represent M_JMA. The other aspects are the same as in Fig. 1. d Global CMT and e JMA first motion solutions. Strike, dip, and rake angles are shown below the focal mechanisms. The squares and circles indicate the stations whose epicentral distance are less than and more than 50 km, respectively. The black and white colors indicate dilatational and compressional first motions, respectively