@article{fdi:010067678,
  title = {{A} new view for the geodynamics of {E}cuador : implication in seismogenic source definition and seismic hazard assessment},
  author = {{Y}epes, {H}. and {A}udin, {L}aurence and {A}lvarado, {A}. and {B}eauval, {C}{\'e}line and {A}guilar, {J}. and {F}ont, {Y}vonne and {C}otton, {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} new view of {E}cuador's complex geodynamics has been developed in the course of modeling seismic source zones for probabilistic seismic hazard analysis. {T}his study focuses on two aspects of the plates' interaction at a continental scale: (a) age-related differences in rheology between {F}arallon and {N}azca plates-marked by the {G}rijalva rifted margin and its inland projection-as they subduct underneath central {E}cuador, and (b) the rapidly changing convergence obliquity resulting from the convex shape of the {S}outh {A}merican northwestern continental margin. {B}oth conditions satisfactorily explain several characteristics of the observed seismicity and of the interseismic coupling. {I}ntermediate-depth seismicity reveals a severe flexure in the {F}arallon slab as it dips and contorts at depth, originating the {E}l {P}uyo seismic cluster. {T}he two slabs position and geometry below continental {E}cuador also correlate with surface expressions observable in the local and regional geology and tectonics. {T}he interseismic coupling is weak and shallow south of the {G}rijalva rifted margin and increases northward, with a heterogeneous pattern locally associated to the {C}arnegie ridge subduction. {H}igh convergence obliquity is responsible for the {N}orth {A}ndean {B}lock northeastward movement along localized fault systems. {T}he {C}osanga and {P}allatanga fault segments of the {N}orth {A}ndean {B}lock-{S}outh {A}merican boundary concentrate most of the seismic moment release in continental {E}cuador. {O}ther inner block faults located along the western border of the inter-{A}ndean {D}epression also show a high rate of moderate-size earthquake production. {F}inally, a total of 19 seismic source zones were modeled in accordance with the proposed geodynamic and neotectonic scheme.},
  keywords = {{EQUATEUR}},
  booktitle = {},
  journal = {{T}ectonics},
  volume = {35},
  numero = {5},
  pages = {1249--1279},
  ISSN = {0278-7407},
  year = {2016},
  DOI = {10.1002/2015tc003941},
  URL = {https://www.documentation.ird.fr/hor/fdi:010067678},
}