A severe rainstorm struck part of the Messina province (NE Sicily, Italy) on October, 1st 2009 and triggered several flash floods and landslides, causing human losses and damages to infra- structures. Landslides, mainly consisting of debris/soil slide—debris flows, involved the thin regolith (thickness 0.3–2 m) which covers the metamorphic bedrock. A detailed landslide inventory map was produced through field surveys and analysis of high resolution aerial orthophotos taken immediately after the event. About 1600scar areas have been identified. The spatial hazard assessment has been focused on the detachment areas and took into account lithology; land cover; morphometric and hydrologic parameters. A preliminary analysis was performed by means of the Frequency Ratio approach. A more detailed analysis was then carried out by adopting a multivariate statistical approach. The two results were compared and the reciprocal similarities and differences were highlighted from both a qualitative and quantitative point of view.
Susceptibility assessment of shallow landslides in the Messina province (North-East Sicily, Italy) / Esposito, Carlo; SCARASCIA MUGNOZZA, Gabriele; A., Trigila; M. g., Finoia. - STAMPA. - 1:(2012), pp. 825-830. (Intervento presentato al convegno Landslides and Engineered Slopes: Protecting Society through Improved Understanding tenutosi a Banff, Canada nel 3-8 Giugno 2012).
Susceptibility assessment of shallow landslides in the Messina province (North-East Sicily, Italy)
ESPOSITO, CARLO;SCARASCIA MUGNOZZA, Gabriele;
2012
Abstract
A severe rainstorm struck part of the Messina province (NE Sicily, Italy) on October, 1st 2009 and triggered several flash floods and landslides, causing human losses and damages to infra- structures. Landslides, mainly consisting of debris/soil slide—debris flows, involved the thin regolith (thickness 0.3–2 m) which covers the metamorphic bedrock. A detailed landslide inventory map was produced through field surveys and analysis of high resolution aerial orthophotos taken immediately after the event. About 1600scar areas have been identified. The spatial hazard assessment has been focused on the detachment areas and took into account lithology; land cover; morphometric and hydrologic parameters. A preliminary analysis was performed by means of the Frequency Ratio approach. A more detailed analysis was then carried out by adopting a multivariate statistical approach. The two results were compared and the reciprocal similarities and differences were highlighted from both a qualitative and quantitative point of view.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
