Seismic network 4C:French and Greek part of the NERA-JRA1 experiment (RESIF-SISMOB, ITSAK, GFZ, INGV)

Within the framework of the JRA1 work packages (Waveform modelling and site coefficients for basin response
and topography) of the FP7 EU-NERA 2010-2014 project (Network of European Research Infrastructures for Earthquake Risk Assessment and Mitigation),
a dense seismological temporary network was deployed in the Argostoli sedimentary basin (Cephalonia island, Greece)
in order to investigate basin effects and spatial variation of ground motion. Tooking place during the period September 15th,
2011 to April 20th, 2012, the seismological experiment comprised 62 seismological stations (mid-band velocimeters, eventually coupled with accelerometers)
deployed across the Argostoli basin with inter-station of about 50 meters. 2 mid-band velocimeters
were installed at the eastern- and western-most part of the island in order to improve hypocentral location of earthquakes recorded during the experiment.
Finally, two dense seismic arrays (with inter-station distance from 5 m to 160 m) were also deployed inside the basin to thoroughly understand seismic
wave field composition. More than 3000 seismic events were recorded by this seismological network, among which 817 event with a signal-to-noise ratio above 3.