Abstract

Electrical resistivity imaging (ERI) survey was conducted in an area where landslide occurred in the Elmadag district of Ankara-Kirikkale highway and railway route, central Turkey. Landslide occurred after heavy rainfall in a rock consisting of a succession of limestone layer which was fractured. Electrical resistivity and borehole surveys were carried out to obtain the characterization and quantification of the weathered zone. The ERI sections were obtained from the dipole-dipole array. The results allowed mapping of the weathering material at depth and provided information on the depth of the sliding surface. However, the depth of the sliding surface is between 15 and 50 m.

Key words: Resistivity imaging, landslide, sliding surface.