Simple download service (Atom) of the dataset: Hazard areas in Haute-Savoie

Area exposed to one or more hazards represented on the hazard maps. 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 covered by this class of objects but by another standard dealing with the knowledge of hazards.Some areas of the study perimeter are considered “zero 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 PPRs, regulatory zoning may classify certain areas not exposed to hazard as a prescribing area (see the definition of the class “ZonePPR”).

本类用于指代灾害地图（hazard map）中标注的、受一种或多种灾害影响的区域。灾害地图是灾害研究的成果，其目标为评估研究区域内任意点位的各类灾害强度。评估方法因灾害类型而异，最终会在研究范围内划定若干区域，形成按灾害等级分级的分区体系。针对区域内特定点位的灾害等级赋值时，需综合考虑该危险现象的发生概率及其强度等级。对于多随机PPRNs（multi-random PPRNs），灾害地图上的每个区域通常会通过其受影响的各类灾害对应的编码进行标识。灾害地图上标注的所有灾害影响区域均纳入本类范畴。受防护设施保护的区域必须（可采用特定方式）予以标注，因为即便设有防护设施，该区域仍可能面临灾害风险，例如设施发生破损或防护能力不足的情况。灾害区域可被视为经开发的数据集，其生成过程需整合多源的计算、建模或实地观测所得的灾害数据。此类源数据不属于本类对象的覆盖范围，而是由另一项针对灾害认知的标准进行规范。研究范围内部分区域被归类为“零灾害或微灾害区域”，即经研究确认无灾害风险的区域。此类区域不纳入本类对象范畴，也无需作为灾害区域进行标注。但对于自然PPRs（natural PPRs），监管分区体系可将部分未受灾害影响的区域归类为规定区域，详见“ZonePPR”类的定义。