a) Coseismic slip model for the 2010 Maule earthquake. Black lines denote the Thrust Ridge (TR), Santa María Fault (SMF), Lanalhue Fault (LF) and Pichilemu Fault(PF). Gray circles are epicentral locations of largest aftershocks (Mw>6.5). Dashed gray lines at the down-dip of the rupture depict the slab depth (5-m contours). b) Slip deficit estimation along the rupture area of the Maule earthquake. Shown are the rupture zones of the 1906, 1928, 1985, 1960 and 2010 earthquakes.
Antofagasta earthquake, co-seismic displacements and slip distribution along the seismogenic zone.
Euler pole of Nazca plate in relation to the South American plate.
Seismogenic Interface and Residual Vectors
Configuration of 3-D FE-model of southern Andes a) FE-models include topography and bathymetry, as well as a precise geometry of the slab and continental Moho, which were derived from combining available geophysical information. b) The model structure consists of an elastic upper plate, an elastic subducting plate, a viscoelastic continental mantle, and a viscoelastic oceanic mantle.
a) Optimal distribution of locking rate in the plate interface. Predicted interseismic velocities and GPS vectors corrected by the postseismic signals are shown by green and blue arrows, respectively. b) Tradeoff curve for a broad range of the smoothing parameter (β). The optimal value for β is 0.0095.
