the 2015 geophysical research in the archaeological site of sagalassos

The results of geophysical survey at the site of Sagalassos (A?lasun -Turkey) is presented in this report. During the summer of 2015 (4-11 July) we conducted a passive and active electrical resistivity tomography survey at two different areas. The first one, labeled Area 1, was the Roman Bath area and the second one, labeled Area 2, was the stadium area. Data were collected along non-conventional profiles using Dipole-Dipole array and variable electrode spacing. Two physical parameters were measured, the electrical resistivity and self potential in order to obtain their distribution in a three-dimensional volume. For the area 1 the aim of geophysical survey was to obtain information about the structure stability. For the area 2 the aim of geophysical survey was to investigate about the existence of tombs. A two-dimensional least squares algorithm based on the smoothness-constrained technique, implemented in Res2Dinv software, was used in order to inverted the 2D apparent resistivity data; while the ErtLab software was used for 3d total volume data distribution in the subsurface .