Selection and ranking of ground motion models for seismic hazard analysis in the Pyrenees

With these corrections, some of the ground motion models successfully fit the data

St├ęphane Drouet; Frank Scherbaum; Fabrice Cotton; Annie Souriau

2007

Scholarcy highlights

  • The Pyrenean range is one of the most seismically active regions in France
  • To perform seismic hazard assessments in the Pyrenees, there is a need for strong ground motion models which predict the expected distribution of ground motions at a site due to possible earthquake scenarios
  • The goal of this paper is to provide new constraints on the selection of ground motion models for seismic hazard analysis in the Pyrenees by using a set of records of recent earthquakes
  • This study is aimed at the determination of ground motion models applicable for the Pyrenean region
  • This study confirms that local magnitudes are too high to be used with the ground motion models; in other words, the relationship ML=Mw should not be used, as it is sometimes done in France due to the lack of moment magnitudes determinations
  • The record variability seems to be higher than the one predicted by the ground motion models, but our data set is too small to make a very reliable analysis of variability

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