## 2 Previous Studies  
The soil amplification effect in settlement areas close to active fault zones is an extremely important feature in terms of soil-structure interactions. Engineers design earthquake-resistant structures by considering the dynamic behavior of the soil. Therefore, the determination of the shear wave velocity (V\({}_{\text{s}}\)) of the soil has gained great importance. Over the years, many researchers have studied the relationship between the standard penetration resistance (SPT-N) of soil and geological age, and the soil type is often used by researchers to develop correlations between the shear wave velocity and the N value [21; 22; 23; 24; 25; 26]. Additionally, [PERSON] [22] reported that sandy soils showed a better correlation and higher velocities than cohesive soils. [PERSON] and [PERSON] [27] stated that the geological age and class of the soil did not determine the shear wave velocity effectively and that the important parameter was the SPT-N value. [PERSON] [28] examined the correlations between SPT-N and V\({}_{\text{s}}\) for all soils, sandy soils, and clayey soil types. The study was conducted in an earthquake-sensitive region in eastern Turkey. According to the results of the study, approximately similar Vs values were obtained for all soil types (except gravel soil). [PERSON] and [PERSON] [29] produced empirical equations for all soils, sandy soils, and clayey soils, using 97 data pairs (V\({}_{\text{s}}\) and SPT-N) in the Yenisehir district in the Marmara Region of Turkey. They also compared these empirical equations with previous studies. [PERSON] and [PERSON] [30] investigated 327 test sites in western Turkey, with predominantly clay-silt-sand-gravel deposits. Exponential curve fitting was used to identify the upper and lower bounds for the correlation between seismic velocities with SPT-N and the relative density. [PERSON] and [PERSON] [31] measured shear wave velocity profiles in the field at more than 80 borehole locations, using the spectral analysis of surface waves (SASWs), in the Delhi residential area (India). The authors stated that the results presented in this study could be used in microzonation studies and site-specific ground response analyses in Delhi. [PERSON] [32] carried out shear wave velocity and standard penetration test studies in a part of the Eskisehir settlement area in Turkey. As a result of these studies, empirical equations for SPT-N and V\({}_{\text{s}}\) were obtained for all soils, sand, silt, and clay. To investigate the predictive capability, these correlation equations were compared with previously suggested equations. [PERSON] et al. [1] investigated the development of empirical correlations between Vs and SPT-N for different categories of soil in Chennai city, characterized by complex variations in the soil conditions. The extensive shear wave velocity measurement was carried out using the multichannel analysis of surface waves (MASWs) technique at sites where the SPT-N values were available. In addition, correlations between the energy-corrected and -uncorrected shear wave velocity and SPT-N for all soils, sandy soils, and clayey soils were analyzed by the researchers. [PERSON] et al. [33] examined the empirical correlations between the shear wave velocity and SPT blow counts, in order to characterize shear wave velocity profiles in Erba in northeast Turkey. [PERSON] and [PERSON] [17] developed a correlation between the SPT-N value and the shear wave velocity (V\({}_{\text{s}}\)) for various soil profiles in the city of Mumbai and compared it with other correlations available for different cities in India. In addition, a geospatial contour map of the shear wave velocity profile, with contour intervals of 25 and 50 m/s, was prepared for the city of Mumbai using geographic information systems (GISs). [PERSON] and [PERSON] [2] proposed a modified advanced approach for the city of Kolkata (India), to obtain the shear wave velocity profile and a soil site classification using regression and sensitivity analyses.