Figure 6

(a) The Q_s^–1 and Q_i^–1 value of the BEP, AEP, and all are compared for the stations. (b–d) Topographic maps showing the difference between the BEP and AEP (AEP–BEP) for the Q_s^–1, Q_i^–1, and Q_t^–1 value, respectively, of the Gyeongju earthquake at 1.5 Hz. Focal mechanism²⁸ of mainshock are shown in (d). The styles and symbols are the same as those in Fig. 5.