GIS and Multicriteria Analysis to Evaluate and Map Erosion and Landslide Hazards

Article type: Research Article

Authors: Cavallo, Anna | Norese, Maria Franca

Affiliations: CSI-Piemonte, Direzione Territorio e Ambiente, Corso Unione Sovietica 216, 10134 Torino, Italy. E-mail: anna.cavallo@csi.it | Dipartimento di Sistemi di Produzione ed Economia dell'Azienda, Politecnico di Torino, Corso Duca degli Abruzzi 24,10129 Torino, Italy. E-mail: norese@athena.polito.it

Abstract: A rich georeferenced data base on a flood event in the north west of Italy and the knowledge of experts from the different involved disciplines have been used as the basis for the application of an outranking method, ELECTRE III, oriented to the structuring and validation of consistent multicriteria models for hazard evaluation. The models were developed with the aim of explaining the multidimensional nature of slope instability and erosion phenomena in the study area and to help in the definition of a hazard map using criteria which synthesize different interpretations of these phenomena. The integrated use of multicriteria modeling and data analysis, in a GIS analysis context, resulted in a deeper insight into these natural phenomena and could be the proposal of a more ‘flexible’ information system oriented towards decision aiding.

Keywords: multicriteria decision aid, knowledge structuring, ELECTRE III

DOI: 10.3233/INF-2001-12102

Journal: Informatica, vol. 12, no. 1, pp. 25-44, 2001