Earthquake segmentation in northern Chile correlates with curved plate geometry.

ABSTRACT: We performed an integrated analysis of the coseismic slip, afterslip and aftershock activity of the 2014 M_w 8.1 Pisagua earthquake. This earthquake seems to be spatially located between two major historical earthquakes, the 1868 M_w 8.8 earthquake in southern Peru and the 1877 M_w 8.5 earthquake in northern Chile. Continuous GPS data were used to model the coseismic slip of the mainshock and the largest aftershock (M_w 7.6). The afterslip was modeled for 273 days (end of year 2014) after the largest aftershock, revealing two patches of afterslip: a southern patch between the mainshock and the largest aftershock and a patch to the north of the mainshock. Observations from the seismic network indicate that aftershocks were concentrated near the southe

SUBMITTER: Shrivastava MN 

PROVIDER: S-EPMC6416342 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature