Subsoil investigation through geophysical surveys on the shores of the “Bagno dell’Acqua” lake in Pantelleria, Italy

Abstract

This work presents preliminary results from geophysical studies within the “Conservation of the biodiversity of Lake Bagno dell’Acqua (Island of Pantelleria, Italy)” project aimed to reconstruct the lake’s geological structures. Electrical Resistivity Tomography (ERT), Seismic Refraction Tomography (SRT), Multichannel Analysis of Surface Waves (MASW), and Horizontal to Vertical Spectral Ratio (HVSR) surveys were carried out along the lake’s shores to delineate shallow subsurface stratifications. Sesismic and electrical profiling were positioned coincidentally along the southwestern shores, aiming to facilitated joint interpretation. The integrated interpretation, constrained by MASW results and compared to HVSR results, provided a subsurface reconstruction of the lake’s shores. These preliminary results will be interpreted more effectively when compared with the results of coring conducted on the lake bed and with sub-bottom profiles obtained within the lake.