Discrimination of Quarry Blasts and Earthquakes in Manisa District

The objective of this study is to discriminate the natural and artificial seismic activities in Manisa district. In the frame of the study, 411 vertical velocity seismograms from 296 seismic events (Md￡3.2) in AFAD earthquake catalog have been used at Akhisar (AKHS), Saruhanli (BLN), Salihli (KTT) and Merkez (CAM) broadband stations between 2007 to 2014. Maximum S and P-wave amplitude ratios of vertical component velocity seismograms (S/P), duration of seismic events, power ratios of common recordings of above stations (Complexity-C) and spectral ratios (SR) were calculated in order to discriminate earthquakes and quarry blasts by using Linear Discriminant Function (LDF). At the end of the study, 124 (42%) records are determined as quarry blasts and 172 (58%) events are detected as earthquakes from the total of 296 seismic activities