Fig. 7From: Why do aftershocks occur? Relationship between mainshock rupture and aftershock sequence based on highly resolved hypocenter and focal mechanism distributionsHistograms showing A t. a Red and gray bins correspond to A t around the mainshock fault (Faults 1 through 4) and the best-fit planes in the northern part of the aftershock region (Faults 5 through 8), respectively. b Each bin shows A t around Faults 1 and 2 estimated using a smaller region for event selection. The solid and open bins indicate, respectively, A t with a planarity greater than or equal to 8 and A t with a planarity less than 8Back to article page