The paper reports on an investigation into the distribution and type of landslides in the Benevento province, southern Italy, between 2001 and 2011. Field mapping was undertaken at various scales up to 1:10,000 depending on the identified features. Landslide types were recognized within 5-group litho-technical sequences cropping out in the province, grouped according to their similar mechanical and lithological features. The analysis showed a widespread diffusion of earth flows, with reactivation linked to both rainfall and seismic events. The flows are structurally controlled with regard to bedding, stratigraphic-tectonic contact between more and less competent sequences and a high degree of tectonisation. The study of the Samnite territory allows to acquire an updated picture of the instability and is therefore an appropriate basis for predicting typological and spatial distribution of landslides in the area. At the same time, it allows the identification of structures predisposing to landslides, providing information about the susceptibility, decisive in the evaluation of landslide scenarios and, therefore, in planning.
La problematica della franosità nel Sannio. Caratterizzazione e distribuzione delle instabilità di versante.
BENCARDINO, MASSIMILIANO;
2013-01-01
Abstract
The paper reports on an investigation into the distribution and type of landslides in the Benevento province, southern Italy, between 2001 and 2011. Field mapping was undertaken at various scales up to 1:10,000 depending on the identified features. Landslide types were recognized within 5-group litho-technical sequences cropping out in the province, grouped according to their similar mechanical and lithological features. The analysis showed a widespread diffusion of earth flows, with reactivation linked to both rainfall and seismic events. The flows are structurally controlled with regard to bedding, stratigraphic-tectonic contact between more and less competent sequences and a high degree of tectonisation. The study of the Samnite territory allows to acquire an updated picture of the instability and is therefore an appropriate basis for predicting typological and spatial distribution of landslides in the area. At the same time, it allows the identification of structures predisposing to landslides, providing information about the susceptibility, decisive in the evaluation of landslide scenarios and, therefore, in planning.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
