A TDEM survey to define local hydrogeological structure in Anthemountas Basin, N. Greece

Papadopoulos¹, P. Tsourlos^1*, P. Karmis², G. Vargemezis¹

and G. N. Tsokas¹

¹Geophysics Department, School of Geology, Aristotle University of Thessaloniki, Panepistimioupolis, 54124 Thessaloniki, Greece. E-mail: tsourlos@lemnos.geo.auth.gr

²Geophysics Department, Institute of Geology and Mineral Exploration (IGME), 70 Μesogion, 11527 Αthens, Greece.

*Corresponding author.

(Received 16 April 2004; accepted 14 June 2004)

Abstract: A detailed survey using Time Domain ElectroMagnetic (TDEM) soundings was conducted in Anthemountas Basin at the northern part of Greece, in order to delineate the intrusion of sea-water into coastal fresh water aquifer detected by drilling wells. We employed robust 1-D inversion algorithm because of high-level noise contamination of data caused by nearby airport. Inversion results were combined and plotted in pseudo 2-D, and 3-D sections. Geophysical interpretations correlate well with the existing geological and hydrogeological information. The results indicate that TDEM sounding method can provide accurate information in a highly conductive environment, even in the case of noisy data.