G.I.S. Analysis For The Study Of Slope Instability Processes In A Fluvial Basin
Free (open access)
A. De Vincenzo, D. Palma, V. Scuccimarra, F. Sdao & A. Sole
This paper aims to propose a methodology of spatial analysis, through G.I.S. techniques, to study hydrogeological instability processes and how they relate to the fluvial morphogenesis, which characterizes many mountain fluvial basins in Italy. More precisely, this methodology has been applied to study the Inferno creek watershed (Basilicata, Southern Italy). This basin is characterized by severe instabilities caused by intense and widespread slope instability, by sediment-load processes, by the effects produced by the Camastra’s dam and by a score of river works. The use of G.I.S has allowed us to complete a comparative analysis of these numerous characteristics of the Inferno creek watershed, and it has proved adept at finding out the interactions between the slopes’ dynamic and the rivers’ dynamic, especially in a high hydrogeological instability basin, the fluvial morphology turns out to be strongly influenced by the phenomena of morphointrusion of landslides into the river bed. Keywords: G.I.S., fluvial basin, hydrogeological instability, morphointrusion, river works. 1 Introduction and objectives It is common knowledge that the effects of the phenomena, which occur within a catchment propagate down to the river outlet, affecting the characteristics of flow, water quality and sediment load. Therefore, it is necessary to study a natural event or anthropic intervention not only on a local scale but also on a basin scale, through an analysis of all the characteristic aspects of the basin itself
G.I.S., fluvial basin, hydrogeological instability, morphointrusion, river works.