Monitoring deformations caused by Pazarcık (Mw = 7.7) and Ekinözü (Mw = 7.6) earthquakes in Kahramanmaraş on 6 February 2023 with GNSS

The high-precision determination of point positioning on the Earth's surface relies on the use of GNSS (global navigation satellite systems). The accuracy achievable in determining point positioning with GNSS depends on factors such as the satellite system used, evaluation software, data collection duration, data recording interval, and other influencing factors. The purpose of this study is to investigate the impact of the two major earthquakes that occurred in Kahramanmaraş (Pazarcık, Ekinözü) on 6 February 2023, on CORS-TR stations. For this purpose, the daily RINEX data of 22 CORS-Tr stations located near the earthquake zone between 22 January 2023 and 22 February 2023 were evaluated using the GAMIT/GLOBK, with the help of RINEX data from 10 IGS stations. The daily solutions obtained were divided into two sections: pre-/post-earthquake, to reveal the earthquake's impact on the CORS-Tr stations in the region. The rmse of the coordinates for each CORS-Tr stations was calculated for both pre-/post-earthquake periods. Statistical tests were conducted to determine whether the changes in the stations were significant with a 95