Investigation of microseismic activity sources in Konya and its vicinity, central Turkey

Abstract

Different types of seismic activity were recorded in Konya, central Turkey, after the installation of broadband stations by the Kandilli Observatory and the Earthquake Research Institute (KOERI) in 2007. Fifty-nine seismic events with duration magnitudes (Md) between 2.2 and 3.5 were recorded by the Konya (KONT) station in 2007 for statistical analysis. In this study, the microseismic activity in the vicinity of Konya was classified by using the maximum peak amplitude ratio (S/P), power ratio, and spectral amplitude ratio of the vertical component of the seismograms; these differences were used as discriminants. The classification was carried out by using a linear discriminant function (LDF) between two different events. In the discrimination analysis between the quarry blast and the earthquakes, three variables were used together to increase the reliability instead of two variables. After adding one variable to the classification functions, the correct classification percentage increased to 98 from 95%. The results of this study indicate that about 10 and 90% of the selected events are earthquakes and quarry blasts, respectively.