DEUNET (Dokuz Eylul University Seismological Observation Network): Seismicity of Izmir and Its Surroundings with A New Local Seismic Network in Western Anatolia

Abstract

Local and regional networks are needed to better examine the regions with complex tectonism, such as western Anatolia. Local seismic networks may provide critical data to both scientists and local authorities. They are also required as a base for future early warning systems which Izmir, the largest city in the western Anatolia, does not have one. With the support of Dokuz Eylul University, Engineering Faculty and the Department of Geophysical Engineering the installation of a new local network DEUNET established on February 15, 2019, to obtain new and detailed information about Izmir and its surroundings by observing microearthquake activity as well as major and damaging earthquakes in the region. The obtained maps indicate that the network in this period has the capability to detect and locate local, regional and teleseismic earthquakes occurred. According to the results, an intense seismic activity was observed in the northeast and southwest of the station network from its establishment to the present. These recent active areas affected by two large earthquakes which one is called Aegean Sea – Samos earthquake and the other is Manisa earthquake occurred and affected Izmir City and its surroundings. We also examined the focal mechanism solutions of some recorded earthquakes in this paper. In addition, the ground characteristics of the station locations were examined using the recorded earthquakes. Since Dokuz Eylul University is the only university in Western Anatolia that offers seismology education, this network will also provide significant benefits for seismology education.