## 1 Introduction
The E-W, N-S, and vertical acceleration spectra of the earthquake recorded at station 0205 of Kahta, Adhyaman, their representations according to the various probabilities of exceedance, and the acceleration graphs are shown in Figure 7. According to the acceleration values, the highest acceleration for E-W and N-S directions is 0.17 g and 0.11 g for the vertical direction. It is understood that the acceleration values obtained from this station do not exceed any of the design spectra values. Considering the last two earthquake hazard maps used in Turkiye, the changes in the PGA and the design spectral acceleration coefficient (\(S_{\text{DS}}\)) for the short period (0.2 s) for the central locations of the settlements where the fieldwork was performed are shown in Table 3. For the comparison of the short-period values, the local soil class ZC, which is given in the Turkish Building Earthquake Code and can be considered the average soil class, has been taken into account. In contrast to the present earthquake hazard map, the PGA and \(S_{\text{DS}}\) values indicated on the previous earthquake map increased for Golbasi, Besni, Celikhan, Sincik, and Tut, while they reduced for Adhyaman/center, Gerger, Kahta, and Samsat districts. One of the most significant tectonic features in the nation, the East Anatolian Fault Zone, lies across much of the city of Adhyaman. The city of Adhyaman is situated along the Golbasi-Tur koglu (90 km), Celikhan-Erkenek (45 km), and Palu-Sincik (145 km) segments of the EAFZ. During the instrumental period, no earthquake damage was recorded (Adhyaman Provincial Level Disaster Risk Reduction Plan), with the exception of the 2004 Mw = 5.1 Celikhan earthquake. Figure 7: The comparison of earthquake spectral acceleration with design spectra. (**a**) Horizontal, (**b**) vertical of Kahta, Adhyaman, the components of ground accelerations recorded at Kahta 0205 station, (**c**) E–W, (**d**) N–S, (**e**) Vertical directions. RC structures are commonly preferred in settlements with a city center of approximately 632.000. This earthquake caused great destruction for Adyaman since the building stock in the rural areas did not receive engineering service and most of them were old and simple structures [40; 41; 42]. Over time, the buildings that completed their service life and were demolished in rural areas were replaced by mixed and reinforced concrete structures. Reinforced concrete structures constitute approximately 58% of the total building stock of Adyaman cities and districts. Buildings are considered as collapsed, to be demolished, heavily damaged, moderately damaged, slightly damaged, undamaged, and having no detectable damage. This study is based on the data before 2 April 2023. No detectable damage refers to buildings whose damage cannot be determined due to different reasons. Building distributions according to damage levels are shown in Figure 8. Approximately 13% of the RC building stock in Adyaman city center and its districts has become unusable. This shows the scale of the destruction in Adyaman. About 74% of the RC building stock survived the earthquakes with slight or no damage. Figure 8: Damage distribution of reinforced concrete buildings in Adyaman (by Adyaman Provincial Directorate of Environment, Urbanization and Climate Change, 2023).