Abstract Rapid disaster response will provide significant information to relevant responding agencies. On 20 March 2019, an Mw 5.7 earthquake struck the Acipayam basin in southwestern Turkey, which is the largest event to occur in the basin. Here, we use Sentinel-1A interferometric synthetic aperture radar (InSAR) data to investigate the cosesimic deformation related to the Acipayam earthquake. The ascending and descending interforegrams suggest the normal faulting during this earthquake, with the maximum line of sight (LOS) displacements of 4.6 cm and 4.8 cm, respectively. The fault geometric parameters and a detailed coseismic distributed slip model of this event are retrieved by using geodetic data for the first time. Though the coseismic interferograms don’t show enough polarity changes to ascertain the dip orientation of the rupture fault, we regard the northeast-dipping fault as the causative fault by a joint analysis of the residuals plots, 2.5 dimensional (2.5D) deformation field, field investigation results, regional geomorphic feature and overall distribution of aftershock (4.0

中文翻译：

---

Sentinel-1 对 2019 年 Mw 5.7 Acipayam 地震的观测：土耳其西南部 Acipayam 盆地的盲正常断层事件

摘要 快速灾害响应将为相关响应机构提供重要信息。2019 年 3 月 20 日，土耳其西南部的 Acipayam 盆地发生了 5.7 级地震，这是该盆地发生的最大事件。在这里，我们使用 Sentinel-1A 干涉合成孔径雷达 (InSAR) 数据来研究与 Acipayam 地震相关的同震变形。上升和下降的interforegrams表明在这次地震中正常断层，最大视线（LOS）位移分别为4.6厘米和4.8厘米。首次利用大地测量数据反演了该事件的断层几何参数和详细的同震分布滑动模型。尽管同震干涉图没有显示出足够的极性变化来确定破裂断层的倾角方向，