An M_w 6.8 earthquake occurred on October 25, 2018, 35 km offshore from the southwest coastlines of Zakynthos Island. The aftershock sequence appeared remarkably productive with six aftershocks of M ≥ 5.0 in the first month and tens of aftershocks with M ≥ 4.0 during the study period. The GCMT solution for the main shock suggests a very low angle plane (dip = 24°) for a dextral strike–slip faulting (rake = 165°). A similar solution is suggested for the largest aftershock (M_w 5.9) that occurred 5 days afterward. The proximity of the main shock location with the dextral active boundary of Kefalonia Transform Fault Zone (KTFZ) along with the Hellenic Subduction front supports this oblique faulting. The aftershock activity is comprised mostly in depths 5–12 km and forms eight distinctive clusters that accommodate regional strain and evidence strain partitioning. The role of stress transfer and statistical analysis are combined for detailing the highly productive aftershock sequence. Earthquake networks analysis reveals their random structure soon after the main shock, which became small-world structure after the first 200 days. Time series analysis constructed from the aftershock frequency and seismic moment release and manifested significant correlation among the eight seismicity clusters.

一个中号_W¯¯ 6.8级地震从扎金索斯西南海岸线发生在2018年10月25日，离岸35公里。余震出现与6级余震显着富有成效的中号 在第一个月≥5.0和几十余震中号 ≥4.0在研究期间。对于主震的GCMT解决方案表明，右旋走滑断层（前倾= 165°）的角度平面非常低（倾角= 24°）。对于最大余震（M _w5.9）在5天后发生。主震位置与Kefalonia变换断层带（KTFZ）的右旋活动边界以及希腊俯冲锋线的靠近支持了这种倾斜断层。余震活动主要包括5-12 km的深度，并形成八个独特的星团，以适应区域应变和证据应变分区。应力传递和统计分析的作用相结合，以详细说明高产余震序列。地震网络分析显示出主震后不久的随机结构，在最初的200天后变成了小世界结构。由余震频率和地震矩释放构造的时间序列分析表明，八个地震活动性聚类之间存在显着相关性。