Akademik Veri Yönetim Sistemi
ACTA GEOPHYSICA, cilt.74, sa.1, 2026 (SCI-Expanded, Scopus)
This study analyzed 135 teleseismic earthquakes with high signal-to-noise ratios between 2018 and 2024 with the new local network. Time domain iterative deconvolution applied to the rotated radial-transverse-vertical components, after Gaussian low-pass filtering, yields receiver functions; crustal thickness and Vp/Vs ratio are then determined through H-kappa stacking across finely sampled grids, with theoretical Ps, PpPs, and PsPs phase travel times calculated for each stacking parameter pair. Our results reveal Moho depths from similar to 26.9 km near the Tuzla Fault zone to similar to 36 km beneath the northern Menderes-Kula region. Within this range, representative H-kappa solutions include H approximate to 29.7 km and kappa approximate to 1.56 at the Kiraz Basin station (DKRZ), H approximate to 27.6 km and kappa approximate to 1.80 beneath the Karaburun Peninsula (KARB station), and H approximate to 31.0 km and kappa approximate to 2.07 at Simav region (SIMV), with Poisson's ratios of similar to 0.16, similar to 0.28, and similar to 0.35. Across the network, kappa spans 1.50-2.07 and Poisson's ratio 0.10-0.35. An eastward increase in Moho depth mirrors the extensional tectonic framework of Western Anatolia, while lateral variations in kappa reveal localized thermal and compositional anomalies, with cooler, silica-rich crust beneath the Kiraz Basin (DKRZ) and a hotter, mafic-influenced lower crust indicated by the high kappa values at the SIMV. Comparison with the CRUST1.0 model shows Moho depth discrepancies of up to similar to 5 km. We interpret these crustal profiles in the context of the region's deformation and magmatic history, integrating constraints from previous geological and geophysical studies. By combining receiver function analysis, global crustal models and geodynamic interpretation, this work refines the crustal velocity structure beneath Western Anatolia and provides improved input for regional seismic hazard assessment.