Exploring the feasibility of an early warning system in a moderate seismicity context: case study of Pyrenees

Abstract : In the frame of the SISPyr project the feasibility of an Earthquake Early Warning system (EEW) covering Pyrenees is being studied. First of all, the analysis of the existing seismic stations shows that the SISPyr real-time network may be used as a base of a Pyrenean EEW despite that some difficulties exist to its implementation that should be solved. The exploration of an important Pyrenean waveforms database has also allowed to highlight that the main real-time magnitude assessment methodologies dedicated to EEW are fully adapted to the Pyrenean context even though the lack of strong-earthquakes' records limits the range of validity of our empirical relations. Finally, we considered the question of the opportunity to put in place an EEW in Pyrenees. As to do that, an analysis of theoretical performances of the system had been performed, completed by the carrying out of a survey, bound to Pyrenean potential end-users.