Fig. 2: Spatio-temporal evolution of seismicity before the MW 7.8 mainshock.
From: Months-long seismicity transients preceding the 2023 MW 7.8 Kahramanmaraş earthquake, Türkiye
a Clustered seismic activity (C1-C3, C4, C7, C9) and quarry blasts (Q5, Q6, Q8, labelled in red) are visible within a 65 km radius surrounding the future MW 7.8 epicentre. Seismicity clusters display remarkably lower b-values compared to the quarry blasts and non-Poissonian inter-event time statistics (Supplementary Fig. 6). Clusters C1 and C2 hosting the largest 4 foreshocks and emerging within 8 months prior to the mainshock display the lowest b-values, non-Poissonian inter-event time statistics and (in case of C1) magnitude correlations (cf. Supplementary Figs. 5 and 6). b Temporal evolution of seismicity and quarry blast clusters since 2014 with respect to epicentral distance from the mainshock nucleation point. c Same as (b) but zooming-in the time period starting 2020.
