Scientific cooperation between the Charles University in Prague, Faculty of Mathematics and Physics, Department of Geophysics (DGCUP), and the University of Patras, Geological Department, Seismological Laboratory, has originated in 80’s. Since 1997 the two groups jointly operate seismic stations in western Greece. The stations are equipped with weak- and strong-motion sensors. Some stations have satellite connection to the Patras hub. One station transmits on-line data to the ORFEUS international data center. The stations belong to the Patras network PSLNET, which is a part of the national Greek network HUSN.
Since 2010 are the seismic statio supported by project CzechGeo/EPOS(LM2015079). Project is closely related with the 7th FP project EPOS (European Plate Observing System) which was included into the European roadmap of research infrastruktures of ESFRI (European Strategic Forum for Research Infrastructures) in 2008.
The two groups together have investigated a number of significant earthquakes; for example the Mw6.4 Lefkada 2015 (Sokos et al., 2016), Mw6 Cephalonia 2014 (Sokos et al., 2015), Mw7.1 Van 2011 (Gallovic et al., 2014), M5 Efpalio 2010 (Sokos et al., 2012). For more papers see References.
Joint efforts include also development of software ISOLA for moment-tensor calculations, including complex events (Sokos and Zahradník, 2008). The software is used in Patras for routine determination of the focal mechanisms that are reported to the EMSC center. Quick assessment of earthquake fault planes of M>6 events, also reported to EMSC, is performed by the jointly developed H-C method.
The new collaboration between DGCUP and Geodetic Observatory Pecný (GOP), Research Institute of Geodesy, Topography and Cartography, v.v.i. (RIGTC) was established in 2011. In the framework of CzechGeo/EPOS they jointly operate six permanent GNSS (Global Navigation Satellite System) stations in Greece. This activity represents extension of the seismic observations in Greece (currently consisting of 12 stations, RI PSLNET) carried out by DGCUP since 1997.