Evaluation of Site Characterizations and Site Effects of the Ankara Basin Turkey

Koçkar, Mustafa Kerem
Akgün, Haluk
The purpose of this study is to assess the in-situ site characteristics and to perform seismic hazard studies of the Upper Pliocene to Pleistocene fluvial and Quaternary alluvial and terrace deposits located towards the west of Ankara. Based on a general engineering geological, geotechnical and seismic characterization of the site, site classification systems were assigned for seismic hazard evaluations. Then, short-period noise recordings of the microtremor measurements at the ground surface have been used to estimate the site response of the site. This research mainly focuses on the development of a methodology to integrate the various components necessary for a regional multihazard seismic risk assessment that includes consideration of hazards due to local site effects. These tasks have been fulfilled through the development of an engineering database that was obtained from invasive and non-invasive explorations at the study area. Hence, the engineering geological and geotechnical site characterization studies have been compiled; and geophysical site characterization studies have been performed, particularly in the Quaternary sediments of the Ankara basin. By using all of these studies, hazard assessment maps (i.e., site classification map and site period map) and a seismic zonation map of Ankara basin, Turkey were developed along with discussing the consequences of the seismic hazards.
Citation Formats
M. K. Koçkar and H. Akgün, “Evaluation of Site Characterizations and Site Effects of the Ankara Basin Turkey,” presented at the 4th International Conference on Earthquake Geotechnical Engineering (25 - 28 Haziran 2007), Thessaloniki, Greece, 2007, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/72477.