Investigation of Gurbulak landslide using 2D electrical resistivity image profiling method (Trabzon, Northeastern Turkey)

Yilmaz S.

JOURNAL OF ENVIRONMENTAL AND ENGINEERING GEOPHYSICS, vol.12, no.2, pp.199-205, 2007 (SCI-Expanded) identifier identifier


An electrical resistivity image profiling method has been used to characterize the Gurbulak landslide. This landslide is located in the province of Trabzon in Eastern Black Sea Region of Turkey. Primary attention was drawn to the determination of the thickness of the mobilized material, its possible slip surface and evaluation of the groundwater conditions related to the occurrence of the landslide. Electrical resistivity images have been carried out by the dipole-dipole array for data acquisition and least-squares method for data inversion. Transverse resistivity results are displayed as dept slices at different depths below the surface, which nearly yields a three-dimensional resistivity image. The resistivity results and the geological information of the landslide area suggest that the landslide body has different degrees of an altered material and a high degree of saturation, and its sliding surface is at a depth of about 10 m.