Application of ERT and GPR geophysical testing to the geotechnical characterization of historical sites

Filomena de SIlva, Anna d'onofrio, Lorenza Evangelista, Flavia Fascia, Francesco Silvestri, Anna Scotto di Santolo, Stefania Sica, Giuseppe Cavuoto, Vincenzo Di Fiore, Michele Punzo, Paolo Scotto di Vettimo, Daniela Tara

Abstract

The paper presents two recent examples of application of Electrical Resistivity (ERT) and Ground Penetrating Radar (GPR), for reconstructing buried subsoil and structural geometries in two historical sites in the city of Napoli. Both investigation sites were characterized by complex environmental and logistic conditions. The first case study was an ancient hypogean cavity excavated in the tuff, where the integration between ERT and GPR allowed to identify the depth of the soft rock below the natural and anthropic filling. The second investigation was finalized to detect the foundation geometry of a high monumental bell tower resting on loose alluvial and pyroclastic soils. In both cases, the joint interpretation of ERT and GPR tests confirmed the preliminary knowledge on the subsoil and addressed further direct investigation aimed at the stability and safety of the two historical sites.

Keywords

cultural heritage, seismic preservation, geotechnical engineering, geophysical testing, ERT, GPR

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DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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