976 Alea Field Movements (Atlas of Risks)

Area exposed to the hazard of terrain movements (land slide and/or block drops), shown on the hazard map used for the analysis of the risk of terrain movements. The hazard map is the result of the study of the hazard, which aims to assess the intensity of this hazard at any point in the study area. The assessment method leads to the delimitation of a set of areas on the study perimeter, constituting a zoning graduated according to the level of the hazard. The allocation of a hazard level at a given point in the territory takes into account the probability of occurrence of the dangerous phenomenon and its degree of intensity. Each area is usually spotted on the hazard map by a code to which it is exposed.