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    Non-destructive damage analysis in Kariye (Chora) Museum as a cultural heritage building
    (Elsevier, 2019) Yalciner, C. Caglar; Buyuksarac, Aydin; Kurban, Yunus Can
    Non-destructive testing methods are being increasingly used in the evaluation of cultural heritage buildings. Combined geophysical methods especially can be applied to structural evaluations of these kinds of buildings. Ultrasonic Pulse Velocity (UPV) Test and Ground Penetrating Radar (GPR) were used in a complementary way as non-destructive testing techniques in this study. The main aim of the study is to analyze the internal structural configuration as well as the quality of the stone, internal geometry and physical properties of some structural elements. It was determined that the main cracks in all walls within the building are on an axis. The cracks on this crack axis were determined to have been filled during previous repairs on the GPR profiles. However, the filling material is different from the building materials that constitute the building walls and at the same time the presence of void spaces was determined. (C) 2019 Elsevier B.V. All rights reserved.
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    Two-phased evolution of the Susehri Basin on the North Anatolian Fault Zone, Turkey
    (Taylor & Francis Ltd, 2012) Polat, Ali; Tatar, Orhan; Gursoy, Halil; Yalciner, C. Caglar; Buyuksarac, Aydin
    This study has aimed to evaluate the current tectonic structure of the Susehri Basin located on the eastern part of the North Anatolian Fault Zone (NAFZ), one of the most important active faults in Turkey. The work extends earlier investigations of offset and seismicity on the NAFZ and tests a range of evolutionary models. In this study, buried faults have been determined from Ground penetrating radar and magnetic anomalies and possible discontinuities identified by interpolating these data in a region between Golova and Susehri. The discontinuities are shown to be linked to negative flower structures formed within the strike-slip fault zone. Quickbird satellite images have been used to map faults and produce kinematic analyses which show that the active stress regime is dominantly strike-slip. However, normal faults and oblique-slip faults are also observed in the basin together with strike-slip faults and the stress regime creating the strike-slip faults is shown to have formed under NW-SE directed transtension. In addition, oblique faults formed under an extensional regime with NNE-SSW direction also occur in the Susehri Basin as subsets formed under the constraining strike-slip regime. We conclude that the Susehri Basin started to grow as a fault wedge basin following which it transformed into a pull-apart basin by a south splay on the NAFZ so it is now dominantly a transtensional pull-apart feature.