Haluk Ozener¹, Fatih Bulut¹, Asli Dogru¹, Bahadir Aktug², Bengisu Gelin¹, Kaan Alper Ucan¹, Maryna Batur¹, Bulent Turgut¹, Asli Sabuncu¹ and Onur Yilmaz¹, (1)Bogazici University, Kandilli Observatory and Earthquake Research Institute-Department of Geodesy, Istanbul, Turkey, (2)Ankara University, Department of Geophysical Engineering, Ankara, Turkey