the double difference relocation of aftershock sequence of 2017 ezgeleh earthquake

On november 12, 2017, an earthquake with moment magnitude of 7.3 occurred in vicinity of sarpol-e zahab town, kermanshah, iran. the main earthquake of november 12 has been proceeded by a large number of aftershocks; from that date until january 2019, 5078 earthquakes have been recorded by iranian seismological center (irsc). this earthquakehas been the largest event in this region in the last hundred years, the previous largest event in the area had occurred in 1909 ad in silakhor with magnitude of 7.4. in this study in order to relocate 2017-2019 earthquakes in the region, double difference earthquake location method of waldhauser and ellsworth (2000) is applied.