An Earthquake Alarm System for the Marmara Region,Turkey

An Earthquake Alarm System For the Marmara Region, Turkey. M.Ekinci, C.Gurbuz, R.M. Allen Marmara region is tectonically very active and destructive earthquakes occurred in the past. Istanbul and other major cities around the Marmara region can face a significant earthquake hazard in the next thirty years the main Marmara Fault can create an earthquake moment magnitude as week as 7.5 A short-term seismic hazard mitigation in the Marmara region can be very useful.Shot-term hazard mitigation requires information on coming groun motion a few seconds to tens of seconds prior to its arrival.A proposed earthquake alarm system using the MARNET and NANOMET seismic networks could issue a warning a few seconds ahead of damaging groun motion.We proposed system uses the frequency content of P arrival to determine earthquake magnitude, an aproach that allows magnitude determination prior to any damaging ground motion. In this study we applied this method to earthquakes with a magnitude range of 3.0 and 5.1 between 2002 and 2003 in the Marmara region.