An initial velocity model based on VS30 for the region affected by the February 6, 2023 Turkiye earthquakes

Abstract This paper presents a V S30 -dependent one-dimensional (1D) velocity model for the region affected by the February 6, 2023, earthquakes in Turkiye, which were marked by complex fault interactions along the East Anatolian Fault Zone. The proposed model utilizes V S measurements from 118 strong ground motion stations to develop a shallow V S structure (≤ 0.1 km), integrates deeper V S data from Acarel et al. (2019), and establishes a V S transition zone for intermediate depths (0.1 km to 0.6 km). The model evaluation indicated minimal bias despite some discrepancies. Additionally, compressional wave velocities (V P ) and densities (ρ) corresponding to the V S30 -conditioned V S model are provided. The findings from this study can be applied in a range of disciplines, including geotechnical and structural engineering, as well as ground motion simulations.