Fig. 6

\(Q_{\text{P}}^{ - 1}\) (upper) and \(Q_{\text{S}}^{ - 1}\) (lower) distribution along the planes shown in Fig. 5. Two dashed squares indicate the source fault planes estimated by Kato et al. (2016) and GSI (2016). The region enclosed by the red dashed line is the large-slip area (≥3.0 m) of the mainshock estimated by Asano and Iwata (2016). See the captions of Figs. 3 and 5 for an explanation of the symbols