Akademik Veri Yönetim Sistemi
8th International Conference on Earthquake Engineering and Seismology (8ICEES), Aydın, Türkiye, 17 Mayıs - 20 Haziran 2026, ss.1-11, (Tam Metin Bildiri)
Determining the boundaries between the crust and the upper mantle is one of the most essential topics in geophysics. Türkiye and its surroundings are of great interest in this regard due to their complex tectonic structure. Methods such as gravity, magnetic, seismic, GPS, and teleseismic have been used to determine the Moho and 1-D crustal velocity structure for Türkiye. In this study, Bouguer data obtained from the General Directorate of Mineral Research and Exploration (MTA) within the scope of the ongoing project UDAP-Ç-22-06 were interpreted in conjunction with Receiver Function Analysis studies conducted under the same project. Two-dimensional subsurface models were created using two-dimensional Bouguer anomaly data that cover an area ranging from 26.5 to 30°E and 37 to 39.5°N, encompassing a significant portion of Western Anatolia. Vp velocities and Moho depths were calculated from Vp/Vs ratios obtained from receiver function analyses and were correlated with gravity modelling in the model construction process. For each station, the average densities of the mantle, crust, and sediments were calculated at various depths, in accordance with regional tectonics, using Vp velocities obtained from receiver function analyses, as per an empirical equation. Accordingly, the mantle density was determined to be 3.2 g/cm³, the sediment density 2.11 g/cm³, the upper crust density 2.65 g/cm³, and the lower crust density 2.85 g/cm³. Two-dimensional models were created, consisting of parallel sections-oriented N-S. The subsurface model and Moho topography were determined by solving the gravity data according to these parameters.