Coseismic Source Model of the February 2023 Mw 6.8 Tajikistan Earthquake from Sentinel-1A InSAR Observations and Its Associated Earthquake Hazard

On 23 February 2023, an Mw 6.8 earthquake struck the border of Tajikistan and Xinjiang China, source mechanism remains controversial according to different seismic inversions. To better comprehend characteristics surface deformation pattern, we used ascending descending orbital Sentinel-1A SAR data obtain coseismic this based on traditional two-pass differential interferometric synthetic aperture radar (InSAR). The model is inverted from InSAR results. possible Coulomb Failure Stress (CFS) transfer analyzed preferred model. results illustrate that ruptured a blind left-lateral strike-slip fault strike 28.1° with maximum slip 1.53 m total geodetic moment 1.99 × 1019 N·m (Mw 6.83). direction suggest Seismogenic secondary Sarez–Karakul Fault System. 2015 7.2 Sarez Earthquake plays triggering role in occurrence 2023 earthquake. hazard System Sarez–Murghab Thrust enhanced due stress loaded by