Analysis of crust and mantle structure across Turkey using passive seismic data

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Tezin Türü: Doktora

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mühendislik Fakültesi, Jeoloji Mühendisliği Bölümü, Türkiye

Tezin Onay Tarihi: 2019

Öğrenci: BIZHAN ABGARMI

Danışman: ATİLLA ARDA ÖZACAR

Özet:

Anatolia is one of the most tectonically active regions in the world which is amalgamation of different terranes and structures. This region has a complextectonic evolution which includes various stages of subduction and collision. This complexity demands more detailed observations of the crust and upper mantle to generate a comprehensive geodynamic model. However, the knowledge related to crust and mantle structure beneath Anatolia is still very limited so the fates of the structures in deeper interiors are enigmatic. During the last decade, the number of broadband seismic stations operating in Turkey has been expanded significantly which provides a unique opportunity to analyze the crust and mantle in detail. Recently, additional temporary broadband stations are deployed with our collaboration across central Turkey in the scope of an international project funded by National Science Foundation (NSF). In this study, we analyzed the broadband seismic data recorded during earthquakes by national networks and recently deployed temporary stations including the CAT and also the NAF experiments. Our aim is to image the inner structure of crust and upper mantle, detect thicknesses of the crust and analyze the multi-layered seismic anisotropy along crust and upper mantle. At the end, our results are interpreted and modeled along with previous geological and geophysical data to identify the factors controlling the tectonic settings and test plausible geodynamic models.