Huamán Rodrigo, DavidChorowicz, JeanDeffontaines, BenoítGuillande, RichardRudant, Jean-Paul2018-11-092018-11-091993Huamán-Rodrigo, D., Chorowicz, J., Deffontaines, B., Guillande, R. & Rudant, J-P. (1993). Cadre structural et risques géologiques étudiés à l’aide de l’imagerie spatiale: la région du Colca (Andes du sud Pérou).==$Bulletin de la Société Géologique de France, 164$==(6), 807-818.index-oti2018http://hdl.handle.net/20.500.12816/3495Geologycal analysis from remote sensing sata (Spot and Landsat) in Arequipa area and Colca valley (southern Peru) permits to characterize and to locate three different type of natural hazards: the seismic, volcanic and landslide risks. Seismic risk is associated with numerous faults . The mayor fault system is oriented N070°E to N135°E and affected by a sinistral strike slip-motion. It is associated with minor N055°E opened fractures; these faults may be reactivated by earthquakes. The major fault systems strikes N135°E and forms releasing bends including the N055°E open fractures which may give way to the Quaternary volcanism. At last, the volcanic risk is evidenced by the present-day eruptive process of Nevado Sabancaya and the potential activity of Misti volcano (close to Arequipa). The landslide risk is mainly in the alluvial-lacustrine clays along the steep slopes of the Colca valley.application/pdffrainfo:eu-repo/semantics/restrictedAccessStructural geologyRemote-sensingNatural hazardsSpotLandsatinfo:eu-repo/semantics/articlehttp://purl.org/pe-repo/ocde/ford#1.05.00http://purl.org/pe-repo/ocde/ford#1.05.04http://purl.org/pe-repo/ocde/ford#1.05.06Bulletin de la Société Géologique de France