Simple download service (Atom) of the dataset: Hazard areas of natural risk prevention plans in Ariège

This dataset includes the assembly of hazard areas of Ariège’s natural risk prevention plans as of 17 November 2020. These hazard areas have been digitised in accordance with the national requirements of COVADIS. Areas exposed to one or more hazards are shown on the hazard map used for risk analysis of the PPRN. The hazard map is the result of the study of hazards, the objective of which is to assess the intensity of each hazard at any point in the study area. The evaluation method is specific to each hazard type. It 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. For multi-random PPRNs, each zone is usually identified on the hazard map by a code for each hazard to which it is exposed. All hazard areas shown on the hazard map are included. Areas protected by protective structures must be represented (possibly in a specific way) as they are always considered subject to hazard (case of breakage or inadequacy of the structure). Hazard zones can be described as developed data to the extent that they result from a synthesis using multiple sources of calculated, modelled or observed hazard data. These source data are not concerned by this class of objects but by another standard dealing with the knowledge of hazards. Some areas within the study area are considered “no or insignificant hazard zones”. These are the areas where the hazard has been studied and is nil. These areas are not included in the object class and do not have to be represented as hazard zones. However, in the case of natural RPPs, regulatory zoning may classify certain areas not exposed to hazard as prescribing areas (see definition of the PPR class).本数据集整合了截至2020年11月17日的法国阿列日省（Ariège）自然风险预防计划中的危险区域数据。上述危险区域已依据COVADIS的国家规范完成数字化处理。 暴露于单种或多种危险的区域，将在用于自然风险预防计划（PPRN）风险分析的危险专题地图上予以标注。该危险专题地图源自危险研究，其目标为评估研究区域内任意点位的各类危险强度。评估方法因危险类型而异，据此可在研究范围内划定一系列区域，形成按危险等级分级的区划体系。在辖区内特定点位分配危险等级时，需综合考量危险现象的发生概率及其强度等级。针对多随机类型的PPRN，其危险专题地图上的每个区域通常会通过其所暴露的各类危险对应的专属代码进行标识。本数据集涵盖危险专题地图上标注的全部危险区域。 受防护结构保护的区域必须予以标注（可采用特定标注形式），因为即便设有防护结构，仍需考虑结构破损或失效时该区域仍面临危险的情形。 危险区域可被视为经加工整合的数据集，其源自对计算、建模或观测所得的多源危险数据的综合合成。此类源数据不属于本数据集的对象范畴，而是由另一项针对危险认知的标准进行规范。 研究区域内部分区域被归类为"no or insignificant hazard zones"，即经专业研究确认无危险的区域。此类区域不属于本数据集的对象范畴，无需作为危险区域进行标注。 不过，针对自然RPP，监管区划可将未暴露于危险的部分区域划定为规定区域（详见PPR类别的定义）。