Geographica Timisiensis, vol. XXIII, nr.2, 2014 (pp. 87 -96) ● REVEALING THE LANDSLIDE STRUCTURE USING THE ELECTRICAL TOMOGRAPHY TECHNIQUE. CASE STUDY: BUZAD ACTIVE LANDSLIDE Mihaela POPESCU, West University of Timșoara, Geography Department, Romania Email: mihaela.popescu89@e-uvt.ro Petru URDEA, West University of Timșoara, Geography Department, Romania Email: petru.urdea@e-uvt.ro Raul David ȘERBAN West University of Timșoara, Geography Department, Romania Email: raul.serban88@e-uvt.ro Abstract. The electrical resistivity tomography (ERT) survey has been deployed to accurately shed more light of a small landslide located near the Buzad village, Timis County, Romania. This slide actually represents a local reactivation during 2006 of an old landslide. A 2-D resistivity survey along three profiles over the landslide main body using a Wenner configuration was performed in 2007, 2012 and 2014. The results obtained provide useful information about the geometry and characteristics of the landslide, the depth and extension of landslide body. The ERT measurements indicated some zones associated with both the high water content and the clay content within the landslide body, divided by a compact sandstone mass that influenced the slide development. Keywords: landslide, Electrical Resistivity Tomography (ERT), geophysics, translational slide, Lipovei Hills 1. INTRODUCTION Over the last 20 years, if compared to other methods, the geophysical methods become the most applied techniques in a broad spectrum of environmental studies, due to their main characteristics such as flexibility, non-invasive method of investigation, low cost and fast acquisition of high-resolution data and the possibility to investigate a large area (Jongmans, Garambois, 2007). One of these approaches refers to landslides investigations where geophysics has demonstrated a great potential to improve their study. Recently, geoelectrical ground imaging techniques, such as electrical resistivity tomography (ERT), have been more and more applied in the landslides research (Telford et al., 1990; Reynolds,