High-precision relocation of seismic sequences above a dipping Moho: the case of the January–February 2014 seismic sequence on Cephalonia island (Greece)

摘要: Abstract. Detailed velocity structure and Moho mapping is of crucial importance for a high precision relocation seismicity occurring out of, or marginal to, the geometry seismological networks. Usually seismographic networks do not cover boundaries converging plates such as Hellenic arc. The crustal thinning from plate boundary towards back-arc area creates significant errors in accurately locating earthquake, especially when distant seismic phases are included analysis. case Cephalonia (Ionian Sea, Greece) sequence January–February 2014 provided an excellent example where hypocentral was greatly affected by at Ionian sea Aegean sea. This effect examined detail testing various models region order to determine optimal model. Our tests resulted adoption model that resembles region. Then, procedure performed time period 26 January 15 May applying probabilistic non-linear location algorithms. high-precision improved spatial distribution with respect preliminary locations reliable basis examine seismotectonic implications sequence.