Urban Archaeophysics - The Case of Three Cathedrals

Cultural heritage buildings are irreplaceable vestiges of the civilizations. The cathedrals are usually a wide representation of styles and constructive techniques, being clear examples of the development and history of the societies. Geophysical surveys using different non-destructive methods (electrical resistivity tomography, ground penetration radar, frequency electromagnetic domain, passive seismics …) are carried out in many cases to provide information related to these two aspects: existence of older remains under the Cathedral and definition of structural health, detection of possible damage or even, evaluating possible causes of the damage. This paper present three case study in different Cathedrals describing geophysical methodologies used and obtained results.