Spatial identification and characterization of earthquake clusters around the Kazerun Fault System

Spatial identification and characterization of earthquake clusters around the Kazerun Fault System

In this research, by spatially analyzing earthquakes (during the period of the beginning of 2006 to the end of April 2021) that occurred around the Kazerun Fault System (KFS), four earthquake clusters have been identified. These earthquake clusters then were characterized by spatial statistics parameters and also were compared with each other. Results obtained indicate that the identified clusters located in the middle parts of the KFS (clusters II and III) have a swarm-type clustering and branching pattern and these clusters show a lower degree of spatial clustering in comparison to the two other clusters (I and IV). Also, the identified earthquake clusters were studied from the spatial autocorrelation point of view and based on magnitude as desired attribute. Accordingly, this analysis shows positive spatial autocorrelation by high-value clustering in two clusters of II and IV, no significant pattern in cluster III and low-value clustering in cluster I.