Akademik Veri Yönetim Sistemi
JOURNAL OF ASIAN EARTH SCIENCES, cilt.131, ss.109-122, 2016 (SCI-Expanded)
Comparing the results of the microgravity and GNSS measurements is useful for understanding the vertical displacements of the plates. In this study, for determining the geodynamical behaviors of seismically active tectonic structures of Gediz and Buyuk Menderes grabens which are located in Western Anatolia (Turkey) graben system, the mass changes were examined by processing of GNSS and microgravity data. Besides, after modeling the GNSS velocity by Coulomb stress analysis, the stress distributions were investigated for these models. Therefore, first of all, the changes of gravity and the vertical components of GNSS velocity values were evaluated together with a statistical method. Secondly, GNSS velocities were calculated relative to the main tectonic structures and the stress changes of tectonic structures were obtained at different depths with Coulomb stress analysis by using these velocities and all results were evaluated with the earthquakes that had occurred in the study area. Consequently, the crustal movements of the areas located at the GNSS stations and their surroundings were put forwarded as in compensation or uncompensation concept of surface and subsurface loadings due to the mass or groundwater effects by using both microgravity and GNSS measurements, as an initial study on Western Anatolia graben system. (C) 2016 Elsevier Ltd. All rights reserved.