Semi-empirical assessment of soil liquefaction in Gölbaşı (Adıyaman/Türkiye) after the 6th of February 2023 earthquakes

The 7.7 moment magnitude earthquake that occurred on February 6, 2023, affected the territories of southeastern Türkiye and northwestern Syria, by inducing damage in eleven provinces of Türkiye. This was followed by another one, named Elbistan earthquake, with magnitude 7.6. Among the most hit areas, punching failure, consolidation settlements and lateral displacement evidence were observed in the Gölbaşı district, located in Türkiye's Adıyaman province and the proximity of the Gölbaşı lake. After critically analyzing the recorded motions, this paper estimates the expected ground motion at the site due to the first event according to ground motion prediction equations. Reinterpretation of available field investigations performed before the event, i.e., MASW and Standard Penetration Test (SPT), were used to perform a preliminary assessment of the soil liquefaction potential by using semi-empirical approaches and drive the design of further investigations.