The July 20, 2017, M _W 6.6 Kos–Gökova Gulf earthquake occurred offshore, near Bodrum of Turkey and Kos of Greece. It was one of the strongest in the broader area during the last many decades causing two deaths, many injuries and extensive damages. We investigated the evolution of the seismic sequence using seismological and geological tools. The aftershock sequence was relocated mainly in order to define the geometry of the main seismic source, depicting a NNW-dipping fault plane. It also revealed significant clustering, associated with other nearby faults, and asymmetric spatio-temporal evolution. Along with morphotectonic analysis on Kos Island, and other published seismological information (e.g. focal mechanisms), we modelled the seismic source of the mainshock, as well as the one of the strongest aftershocks (August 8, M _W 5.3). We applied the Coulomb failure criterion in order to investigate the effect of the mainshock on the strongest aftershock, and the rest of the sequence as well. Using the same method, we also investigated the stress changes of both strongest shocks for the prevailing E–W-trending normal faults in this area. Among other conclusions and implications, we deduce that the prevailing tectonic setting of the Gökova Gulf consists of roughly E–W-striking normal faults forming inner horsts and grabens.

中文翻译：

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2017年7月20日（ M _W 6.6）SE Aegean Kos–Gökova海湾地震的断层建模，地震序列演化和应力传递方案

2017年7月20日， M _W6.6在土耳其博德鲁姆和希腊科斯附近的近海发生了科斯–戈科娃海湾地震。在过去的几十年中，它是更广阔地区中最强的地方之一，造成了2人死亡，许多人受伤和广泛破坏。我们使用地震和地质工具调查了地震序列的演变。余震序列的重定位主要是为了定义主要地震源的几何形状，描绘了NNW倾角断层平面。它也显示出明显的聚类，与附近的其他断层有关，以及不对称的时空演化。随着对科思地貌分析，以及公布的其他地震信息（例如震源机制），我们模拟的主震的地震源，以及最强的余震一（8月8日， 中号 _{w ^}5.3）。为了研究主震对最强余震以及其余序列的影响，我们应用了库仑破坏准则。使用相同的方法，我们还研究了该地区盛行的E-W趋势正断层的两种最强烈冲击的应力变化。在其他结论和启示中，我们推断出戈科娃海湾的主要构造环境是大致由E-W冲动的正断层构成，形成内部地壳和grab陷。