Abstract: On February 6,2023,Turkey was hit by the conjugate earthquakes of Mw7.8,causing severe damage to local lives and property.To address the issue of quantifying the sensitivity of seismic coseismic deformation to risk assessment during this earthquake risk assessment process,this study proposes an integrated risk assessment methodology combining InSAR-derived deformation data and the analytic hierarchy process (AHP) .The precise coseismic deformation is retrieved byD-InSAR,corrected by GACOS and verified by using ascending and descending SAR satellite data.The AHP is used to integrate coseismic deformation with hazard potential of causative factors and vulnerability of exposed elements.Meanwhile,the Sobol indices are used to systematically quantified the sensitivity contributions of individual parameters.The results indicate that the max value of theconjugate earthquakes deformation reached 1.88 m.The high-risk zones are predominantly in the 20 km buffer zone of the fault zone where are the densely populated urban areas.The direct drivers of the seismic risk are the fault distance effect,coseismic deformation,population density,and building density.The total effect of the coseismic deformation accounted for 19.1% of the model's total variance.This study provides foundational data and a scientific basis for the post-earthquake emergency response and the reconstruction planning.

Key words: InSAR, coseismic deformation, analytic hierarchy process, disaster risk assessment, sensitivity analysis