Revista de la Asociación Geológica Argentina
versión On-line ISSN 1851-8249
PEREYRA, F.X.. Urban geomorphology of San Carlos de Bariloche and its influence in the natural hazards, Rio Negro. Rev. Asoc. Geol. Argent. [online]. 2007, vol.62, n.2, pp. 309-320. ISSN 1851-8249.
San Carlos de Bariloche city is located in Northern Patagonian Andes (71°10´-71°23´O and 41°10´-41°15´S). In last decades, this town has experienced a sustained urban growth, duplicating the number of its inhabitants to nearly 100,000 inhabitants. This fact resulted in a progressive advance of population over former natural areas and the occupation of non suitable terrains. In order to deal with this problem a geo-environmental survey was done at 1:50,000 scale. This paper present the results of the geomorphological mapping. Glacial landforms, depositional and erosional forms, are the main features. Consequently, slopes are steep and superficial materials coarse. Landscape main features and their relation with main hazardous processes are studied. The main environmental problems considered are floodings, slope instability due to mass wasting processes (including rock falls, flows, rock and snow avalanches and landslides), sedimentation and hydric erosion.
Palabras clave : Bariloche; Geomorphology; Urban growth; Natural hazards; Mapping.