Investigation of Earthquake Magnitudes in Gediz Graben System by Clustering Analysis

An earthquake is the event of seismic fluctuations that occur due to unexpected energy in the earth's crust and these fluctuations shaking the earth. The Aegean Region is located at the western end of the Gediz graben system under the influence of the Western Anatolian Opening Regime. The 6.6 magnitude earthquake that occurred recently in the region caused significant damage and losses. For this reason, the Aegean Region is an important region that should be examined regarding earthquakes. Since earthquakes of 3 and less intensity are rarely felt and generally do not have destructive effects, earthquakes of 3 and above are considered. Seismic source regions can be determined by cluster analysis. For this reason, earthquakes will be divided into appropriate clusters in the study according to their latitude, longitude, magnitude and depth. The relationship between clusters will be analyzed with entropy values. Sample and approximate entropy are methods for calculating the approximate entropy value of time series data. Here, sample entropy and approximate entropy values will be calculated for each cluster obtained as a result of the analysis, and similarities and differences between clusters will be evaluated.