Dataset Direct Download Service (WFS): Ault PPRN Hazard Zone

Area exposed to one or more hazards represented on the hazard map used for risk analysis of the RPP. 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 assignment 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 to be subject to hazard (cases of breakage or inadequacy of the structure).The hazard zones may be classified as data compiled in so far as they result from a synthesis using several 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 RPPs, regulatory zoning may classify certain areas not exposed to hazard as prescribing areas.

本数据集指代用于RPP风险分析的灾害地图（hazard map）上标注的、暴露于一种或多种灾害的区域。该灾害地图源于灾害专项研究，其核心目标为评估研究区域内任意点位的各类灾害强度。针对不同灾害类型需采用专属评估方法，由此在研究范围内划定若干区域，形成按灾害等级分级的分区方案。对区域内特定点位赋予灾害等级时，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PPRN（multi-random PPRNs）场景，灾害地图上的每个分区通常会通过对应其所受灾害的编码进行标识。本数据集涵盖灾害地图上标注的全部灾害区域。受防护结构保护的区域必须予以标注（可采用专属方式），因为即便有防护结构，仍存在结构失效或防护不足的可能，此类区域仍被视为处于灾害风险之中。灾害区域可归类为经整合的数据，此类数据源于对多源计算、建模或观测所得灾害数据的综合分析。本对象类不涵盖这些源数据，相关源数据需遵循另一项灾害认知相关标准进行管理。研究范围内部分区域被视为“零灾害或微灾害区域”，即经研究确认无灾害风险的区域。此类区域不属于本对象类范畴，无需作为灾害区域进行标注。但对于天然RPP场景，监管分区可能会将部分未受灾害影响的区域划定为规定管控区域。