a Co-seismic GPS measurements (black arrow) and synthetics (blue arrow). White dots show seismicity after the Mw 6.5 event until 1 August, 2019, red dots are foreshocks. The catalogue is from the Southern California Seismic Network which is available on-line (https://scedc.caltech.edu/eq-catalogs/index.html). Solid and dashed rectangle outlines projections of the faults adopted in this study for the Mw 7.1 and Mw 6.5 events, respectively, and the thick edges are at the surface. Left top corner, moment rate function derived. b Model of the slip distribution for fault F1, F2 and F3, the blue star shows the hypocenter location. c Coulomb Stress Failure on the fault of the Mw 7.1 event induced by the Mw 6.5 earthquake, note that the color bar is saturated.