The Kinematics of the East Anatolian Fault Zone, Eastern Turkey and Seismotectonic Implications

Abstract

One of most prominent and active faults in Eastern Turkey is the NE-SW oriented left-lateral strike-slip East Anatolian Fault Zone (EAFZ) with a length of approximately 500 km. In this study, we have examined the recent seismicity of EAFZ that was obtained from the records of 34 three-dimensional broad-band earthquake stations established around the fault zone within TURDEP project since 2006. Further the seismicity and fault mechanism solutions of EAFZ, Eastern Turkey have been examined. The new fault mechanism solutions in addition to previously published 220 earthquakes, with a magnitude of ML=2.0 or more were determined by a local moment tensor solution and P-wave first motion data. It was suggested that the recent tectonic deformation of EAFZ south of Türkoğlu was taken up by the left-lateral strike-slip active faults in between Amik and Adana Basins were young trans-tensional stress regime was also active.

Tectonic evolution of the central part of the East Anatolian Fault Zone, Eastern Turkey

“…Structural features, fault geometry, morphology, tectonics, and seismicity of the EAFZ have been examined in numerous studies (Ambraseys, 1971;Arpat and Şaroğlu, 1972;McKenzie, 1976;Jackson and Mckenzie, 1984;Şengör et al, 1985;Muehlberger and Gordon, 1987;Barka ve Kadinsky-Cade, 1988;Taymaz et al, 1991;Lyberis et al, 1992Lyberis et al, , Şaroğlu et al, 1992Nalbant et al, 2002;Herece, 2008;Bulut et al, 2012;Duman and Emre, 2013;Tan and Eyidoğan, 2019).…”

“…Although the EAFZ has been studied in many aspects such as its geometry, segmentation, seismicity, slip rate and age (Ambraseys, 1971;Arpat and Şaroğlu, 1972;McKenzie, 1976;Jackson and Mckenzie, 1984;Şengör et al, 1985;Muehlberger and Gordon, 1987;Barka ve Kadinsky-Cade, 1988;Taymaz et al, 1991;Lyberis et al, 1992Lyberis et al, , Şaroğlu et al, 1992Nalbant et al, 2002;Herece, 2008;Bulut et al, 2012;Duman and Emre, 2013;Tan and Eyidoğan, 2019), the structural analysis studies based on slip data of the faults and earthquakes to determine the deformation stages are quite limited (Yılmaz et al, 2006;Köküm and İnceöz, 2018). This study aimed to analyze the structure and morphology of the central part of the EAFZ using field observations and remote sensing data (Digital Elevation Model-DEM).…”

Elazığ ve Çevresindeki İllerde Meydana Gelen Tektonik Hareketlerin TUSAGA-Aktif İstasyonlarının Konumlarına Etkisinin Statik Deformasyon Modeller Kullanılarak İncelenmesi

“…DAFZ aynı zamanda eğim atımına da sahip, birbirine paralel kayma düzlemleri boyunca hareket eden, birkaç metre ile 10 kilometreye ulaşan bir fay zonunu temsil eder (Tanrıverdi, 2018). DAFZ, farklı doğrultu eğim ve hareket bileşenlerine sahip olan farklı fay kollarının oluşturduğu birbirlerinden bağımsız geometrilerde zonal bir yapıdan oluşmaktadır (Tan ve Eyidoğan, 2019;Khalifa, 2018;Kayın, 2019 ( 2 ) = ( ̅ ̅ ) , = 1, 2,…,…”