Analysis region used for the models’ calibration, application and comparison. The red and black partially overlapped squares of side |$L = 30\sqrt 2 \ $| km represent the tessellation |${R}_1$| and |${R}_2$|⁠, respectively. Each cell contain at least one earthquake with |$\mathrm{ Mw} \ge 4.0$| occurred inland from 1600 to 1959 according to the CPTI15 catalogue (Rovida et al. 2022).