This implies a particular effort of our country to carry out a seismic survey of the territory, to identify active faults with a quantitative estimation of their potential of rupture. Born from the necessity to organize and to improve the instrumental seismic coverage of France at the beginning of the eighties, R NaSS is nowadays a federation of regional seismic networks, isolated seismological stations and broadband observatories whose main components are connected via a central site. The regional networks are under the responsibility of different seismic departments from either the CNRS or the Universities. The R NaSS is headed by a Scientific Committee. The TC is also in charge of discussing and preparation of plans for future developments.
Some isolated stations complement the network.