Le problematiche connesse con la valutazione del rischio geologico in un’area urbanizzata: il caso di Abbadia San Salvatore (SI)

This paper shows the application of different geophysical methods
carried out at the same site within a study related to an urban geology
problem. The objective of the study was to reveal the extension of
a shallow mud level in the urban area of the Abbadia San Salvatore
(Siena, Italy) municipal area. Many buildings, including a school,
are founded on a two meter layer that rests on this mud level. This
geological configuration constitutes a potential risk for the safety of
the local inhabitants. The results obtained with seismic methods that
make use of both body and surface waves combined with gravimetric
surveys and calibrated by borehole drilling logs are critically
discussed.