Analysis of short-term Sentinel-1 data using the DInSAR method for monitoring displacement following the earthquakes of 6 and 20 February in Hatay city

The Eastern Anatolia Fault Zone (EAFZ) has caused destructive earthquakes. Kahramanmaraş and Hatay, located on the EAFZ, were hit by devastating earthquakes with magnitudes of 7.7, 7.6, and 6.3, respectively, in February 2023. A tectonic chain of disasters was seen in Hatay in a short time, first on 6 February 2023, with earthquakes centred in Kahramanmaraş and the subsequent intense earthquake series, and lastly on 20 February 2023, with the Hatay earthquake centred in the Yayladağ district. The lithological characteristics of the units in the region increased the destructive effects of the earthquakes. In addition, the location of the study area, where the EAFZ and the Death Sea Fault Zone are close to each other, increases the importance of research. This study aims to monitor the ground displacements caused by the earthquakes in Hatay. Sentinel-1A Synthetic Aperture Radar data was acquired on 29 January, and 10 and 22 February, and the Differential Interferometry Synthetic Aperture Radar method was applied. In addition, the elevation change was determined by using two-month global navigation satellite system data from the Continuously Operating Reference Station points (HAT2 and ONIY) in the study area. Thus, considering regional tectonics, ground movements resulting from the earthquakes on 6 and 20 February were identified and examined using geologic, geodesic, and remote sensing techniques.