RT Journal Article
T1 Seismic hazard assessment for the Itoiz dam site (Western Pyrenees, Spain)
A1 García-Mayordomo, J.
A1 Insua Arévalo, Juan Miguel
AB This work summarises the seismic hazard analysis performed for the complete characterisation of strong ground-motion at the site of the Itoiz dam (Western Pyrenees, Spain). The hazard analysis includes the compilation of a composite catalogue from French and Spanish agencies, the definition of an original hybrid seismogenic source model (including zones and major faults) and the selection of ground motion prediction equations (GMPEs). Hazard results are provided as hazard curves and acceleration response spectra on rock for the 1000- and 5000-year return periods, which correspond respectively to the operating basis earthquake (OBE) and safety evaluation earthquake (SEE). The impact of truncating GMPEs at a number of standard deviations (epsilon) has been found not critical here for the return periods targeted. Subsequently, an analysis of the contribution of each source to total hazard and a hazard disaggregation analysis are performed in order to establish the earthquake-source parameters for both the OBE and SEE scenarios consistently with the seismotectonics of the region. The European Strong Motion database is then searched and a selection of records is proposed for each of the scenarios. Our results suggest that seismic hazard in the region is underestimated by the official Spanish seismic hazard map included in the current version of the code (NCSE-02), which is the reference document for the definition of seismic actions for dam projects in the whole Pyrenees.
PB Elsevier
SN 0267-7261
YR 2011
FD 2011-07
LK https://hdl.handle.net/20.500.14352/97955
UL https://hdl.handle.net/20.500.14352/97955
LA eng
NO García-Mayordomo, J., y J. M. Insua-Arévalo. «Seismic Hazard Assessment for the Itoiz Dam Site (Western Pyrenees, Spain)». Soil Dynamics and Earthquake Engineering, vol. 31, n.o 7, julio de 2011, pp. 1051-63. DOI.org (Crossref), https://doi.org/10.1016/j.soildyn.2011.03.011.
NO Received 18 August 2010 / Received in revised form 10 December 2010 / Accepted 27 March 2011.© 2011 Elsevier Ltd. All rights reserved.
NO Ministerio de Medio Ambiente (España)
NO Instituto Geológico y Minero de España
DS Docta Complutense
RD 18 abr 2025