The arc-shaped Bozgush Mountains is a remarkable morphological feature bounded by active faults in northwest Iran. The southern and northern parts of the mountain belt are limited by the South and North Bozgush Fault Zones, which produced numerous destructive earthquakes in historical and instrumental periods. We employed the Sentinel-1A Differential Interferometric Synthetic Aperture Radar (DInSAR) method to map the deformation details of the November 08, 2019, Turkmanchay earthquake (Mw: 5.9) along the South Bozgush Fault Zone to understand the earthquake-triggered surface deformations and seismogenic faulting characteristics. The results of the DInSAR time-series analysis show that subsidence and uplift range from − 5 cm to + 6 cm, respectively. The total line of sight (LOS) displacement was approximately 11 cm. Interferogram fringes and deformation patterns indicate that the direction of the potential seismogenic fault is WNW-ESE. These patterns are consistent with the orientation of the South Bozgush Fault Zone, including primarily right-lateral strike-slip characteristics with reverse components. Continuous patterns of the obtained interferogram fringes indicate that surface rupture did not occur during the earthquake. Our Coulomb failure function results in preferred faults derived from geological structures, indicating that the stress rate was positive and high in several segments of the South and North Bozgush Faults, revealing that the main earthquake event might trigger those faults. The large aftershocks that occurred on the same faults supported our results, and the distribution of aftershocks in the Bozgush Mountains suggests that the WNW-ESE orientation is consistent with the orientation of segments constituting the South Bozgush Fault Zone.

弧形的博兹古什山脉是一个显着的形态特征，以伊朗西北部的活动断层为界。山脉的南部和北部受到南部和北部的博兹古什断裂带的限制，该断裂带在历史和器乐时期造成了许多破坏性地震。我们采用Sentinel-1A差分干涉合成孔径雷达（DInSAR）方法绘制了2019年11月8日土库曼查伊地震（Mw：5.9）沿南Bozgush断裂带的变形细节图，以了解地震触发的表面变形和地震成因故障特征。DInSAR时间序列分析的结果表明，沉降和隆起范围分别为− 5 cm至+ 6 cm。总视线（LOS）位移约为11厘米。干涉图条纹和变形模式表明，潜在的地震成因的方向是WNW-ESE。这些模式与南博兹古什断裂带的方向一致，主要包括右旋走滑特征和反向分量。所获得的干涉图条纹的连续图案表明在地震过程中未发生表面破裂。我们的库仑破坏函数导致了从地质构造中衍生出的优选断层，这表明南博兹古什断层和北博古什断层的几个部分的应力率是正的并且很高，这表明主要的地震事件可能触发了这些断层。在相同故障上发生的大余震也支持了我们的结果，