This research focuses on declustering the earthquake catalog by removing non-independent events, such as foreshocks and aftershocks. The Gardner and Knopoff (GK) method, known for its simplicity and efficiency, is used for declustering. However, the G...
This research focuses on declustering the earthquake catalog by removing non-independent events, such as foreshocks and aftershocks. The Gardner and Knopoff (GK) method, known for its simplicity and efficiency, is used for declustering. However, the GK method may inadvertently remove more events than necessary and cannot handle complex cascading event sequences. The results showed that approximately 71% of the earthquake catalog consisted of independent events. Nonetheless, there were limitations in the data distribution and gaps in information for events outside a specific magnitude range. Further analysis is required to assess the usability of macroseismic events and analyze ground motion prediction equations using a refined catalog. This project emphasizes the significance of declustering and considering event independence in seismic hazard analysis for the Korean Peninsula.