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The IRSN co-organises the first workshop of the French seismologic and geodetic network dedicated to seismic hazards

27/09/2016

The first workshop of the French seismologic and geodetic network (Réseau sismologique et géodésique français, RESIF) dedicated to seismic hazards will take place on the 27th and 28th of September in Strasbourg (France). The IRSN, which is one of the historical players in the field, has been heavily involved in its organisation alongside the Geological and Mining Research Office (Bureau de recherches géologiques et minières, BRGM) and the Universities of Strasbourg, Montpellier and Besançon. This workshop is aimed at intensifying the dialogue between data producers (geological, geodetic and seismic) and seismic hazard practitioners in France (IRSN, BRGM, EDF, CEA, etc.) so that assessments conducted on French territory are based on information and shared models obtained from the best current knowledge.

 

Two main and complementary topics will be discussed during the two days:

  1. Quantification of the seismogenic potential associated with seismic sources. In particular, the use of geodetic and geological strain rates, the assessment of the slip rate of faults and the estimation of the magnitudes and depths of earthquakes associated with the sources will be discussed;
  2. Characterisation of the lithosphere properties, for example through the regional anelastic attenuation of the seismic movement measured from the seismic data, the attenuation of the intensity deduced from macroseismic observations, gravity data, etc.

The purpose of the discussions is to identify the most up to date data and models, as well as the deficiencies relating to these two topics. The workshop should thus lead to the development of a summary document that could serve as a roadmap for updating the knowledge useful for calculating seismic hazards.

 



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