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New Seismic Hazard assesment in El Salvador
Research Areas
  • Geology,
  • Geophysics,
  • Engineering
In this work, we present a new seismic hazard assessment in El Salvador taking into account the major structures in the zone. We model faults as independent seismogenic sources. This makes it possible to apply a hybrid methodology, in combination seismogenic area-sources and faults with known data, thus obtaining a more reliable and accurate map of seismic hazard for El Salvador. El Salvador Fault Zone (ESFZ) (Martínez-Díaz et al., 2004; Corti et al., 2005) is the main structure seismically active in El Salvador. It is capable of producing earthquakes such as the February 13, 2001 with Mw 6.6 (Benito et al., 2004), that seriously affected the population, leaving many casualties. The geometry and the degree of activity of the ESFZ have been studied from geodetic (Staller et al., 2016), geological and paleoseismological studies (Canora et al., 2012; 2014b; Alonso-Henar et al., 2014). In this work, we use the seismic catalogue and the geological and geodetic slip rates associated with the main fault segments and faults of the ESFZ to improve the previous seismic hazard studies in the zone (Benito et al., 2010; Benito et al., 2012). As we expected, the accelerations increase close and around fault segments with higher slip rates, and the probability of exceedance decreases in areas where fault recurrence intervals approaches the elapsed time. For the first time in El Salvador we include modeled faults as independently estimated seismogenic sources. This work provides a significant improvement in the seismic hazard assessment in the region.
IASPEI Regional Assembly Latin - American and Caribbean Seismological Commision - LACSC.
San José, Costa Rica
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IASPEI Regional Assembly Latin - American and Caribbean Seismological Commision - LACSC.
  • Autor: Alejandra Staller Vazquez (UPM)
  • Autor: Maria Belen Benito Oterino (UPM)
  • Autor: Jorge Miguel Gaspar Escribano (UPM)
  • Autor: Sandra Ruiz Barajas (UPM)
  • Autor: José J. Martínez-Díaz (Universidad Complutense de Madrid)
  • Autor: Jorge Alonso-Henar (Universidad Complutense de Madrid)
  • Autor: José Antonio Álvarez-Gómez (Universidad Complutense de Madrid)
  • Autor: Carolina Canora (Universidad Complutense de Madrid)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería Sísmica: Dinámica de Suelos y Estructuras
  • Departamento: Ingeniería Topográfica y Cartografía
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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