Figure 3
Dislocation associated with rupture of the Norcia 30 October 2016 earthquake29,30 (see Methods). The preceding seismicity29 since the 24 August 2016 Amatrice earthquake and occurring within 350 m (see Methods section) from the fault plane is also displayed. The colour code for time and symbols for aftershocks are the same as in Fig. 2. The foreshocks are distributed around the Norcia slip area – showing the “encircling maneuver” (ref.24) leading to the breakage of the asperity – and are clustered in three main patches, with varying b-value representing a complex pattern of the differential stress, increasing down-dip and away from the asperity (Supplementary Fig. 2). The empty star corresponds to the location of the Norcia event hypocenter29 (rupture nucleation), while the arrow indicates the dominant direction of rupture propagation.
