Spatial analysis of critical fluvial areas from aerial multispectral images: an application to River Paglia (central Italy)

The paper presents the first results of a work aimed to develop automatic procedures, and/or semi-automatic, for the morphological and sedimentary analysis of riverbeds (made through multispectral aerial photographs) and to define the morphological changes (plano-altimetric) of the river, by comparison with previous surveys. The methodology has been applied to an area of study that includes the lower valley of River Paglia (a tributary on right of the River Tiber, in central Italy) where a flood, occurred in November 2012, has produced important morphological changes of the riverbed-floodplain system.