Correlation of Ground Deformation Induced by the 6 February 2023 M7.8 and M7.5 Earthquakes in Turkey Inferred by Sentinel-2 and Critical Exposure in Gaziantep and Kahramanmaraş Cities

On 6 February 2023, an M7.8 devastating earthquake started rupturing the East Anatolian fault system in Turkey, resulting intense shaking that lasted over a minute. A second of magnitude 7.5 struck near city Elbistan few hours later. Both these events are associated with system. The sequence caused widespread damage and collapse structures densely populated areas throughout Southern Turkey Northern Syria regions very large number human losses. This study focuses on correlation ground deformation critical exposure infrastructures Gaziantep Kahramanmaraş cities. estimation affected area is achieved use Copernicus Sentinel-2 products Normalized Cross Correlation algorithm (NCC) image matching. results East–West component show specific sections region moved towards direction, reaching displacement measurements 5.4 m, while other West 2.8 m. North–South almost whole North displacements 5.5 exemptions, as some South even 6.9 Regarding cities Gaziantep, their estimated movement direction North-West North-East, respectively, consistent movements Arabian Plates which they located. Important (education, museums, libraries, hospitals, monuments, airports, roads railways) superimposed findings, enabling us to detect rapidly.