@article{fdi:010073087,
  title = {{A} new seismic hazard model for {E}cuador},
  author = {{B}eauval, {C}{\'e}line and {M}arini{\`e}re, {J}udith and {Y}epes, {H}. and {A}udin, {L}aurence and {N}ocquet, {J}. {M}. and {A}lvarado, {A}. and {B}aize, {S}. and {A}guilar, {J}. and {S}ingaucho, {J}. {C}. and {J}omard, {H}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e present a comprehensive probabilistic seismic hazard study for {E}cuador, a country exposed to a high seismic hazard from megathrust subduction earthquakes and moderate-to-large shallow crustal earthquakes. {B}uilding on knowledge gained during the last decade about historical and contemporary seismicity, active tectonics, geodynamics, and geodesy, several alternative earthquake recurrence models have been developed. {W}e propose an areal seismic zonation for the seismogenic crustal, inslab, and interface sources, modified from {Y}epes et al. (2016), to account for the information gained after the 2016 {M}-w 7.8 {P}edernales megathrust earthquake. {T}hree different earthquake catalogs are used to account for uncertainties in magnitude-frequency distribution modeling. {T}his first approach results in low hazard estimates for some areas near active crustal fault systems with low instrumental seismicity, but where geology and/or geodesy document rapid slip rates and high seismic potential. {C}onsequently, we develop an alternative fault and background model that includes faults with earthquake recurrence models inferred from geologic and/or geodetic slip-rate estimates. {T}he geodetic slip rates for a set of simplified faults are estimated from a {G}lobal {P}ositioning {S}ystem ({GPS}) horizontal velocity field from {N}ocquct et al. (2014). {V}arious scenarios are derived by varying the percentage of motion that takes place aseismically. {C}ombining these alternative earthquake recurrence models in a logic tree, and using a set of selected ground-motion models adapted to {E}cuador's different tectonic settings, mean hazard maps are obtained with their associated uncertainties. {A}t the sites where uncertainties on hazard estimates are highest (difference between 84th and 16th percentiles > 0.4g), the overall uncertainty is controlled by the epistemic uncertainty on the source model.},
  keywords = {{EQUATEUR}},
  booktitle = {},
  journal = {{B}ulletin of the {S}eismological {S}ociety of {A}merica},
  volume = {108},
  numero = {3{A}},
  pages = {1443--1464},
  ISSN = {0037-1106},
  year = {2018},
  DOI = {10.1785/0120170259},
  URL = {https://www.documentation.ird.fr/hor/fdi:010073087},
}