Dataset Direct Download Service (WFS): Risks of PPRT Tereos in Artenay

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 PPRTs the hazard levels are determined by effect effect on maps by type of effect and overall on an aggregated level on a synthesis map.All hazard areas represented 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.本类区域指用于RPP风险分析的灾害地图（hazard map）上所标注的、受一种或多种灾害影响的区域。该灾害地图为灾害研究的成果，其研究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，其可在研究范围内划定一系列区域，形成按灾害等级分级的分区体系。针对境内任意点位的灾害等级赋值，需综合考虑该危险现象的发生概率及其强度等级。针对PPRTs，灾害等级需按效应类型在对应地图上确定，并在综合地图上以聚合等级的形式进行整体呈现。灾害地图上标注的所有灾害区域均纳入本类范围。受防护结构保护的区域必须（可采用特定方式）予以标注，因为即便有防护结构，仍存在结构破损或失效的可能，此类区域仍被视为处于灾害影响范围内。灾害区域可按数据类型进行分类，前提是其基于多源计算、建模或观测得到的灾害数据综合生成。此类源数据不属于本对象类别的覆盖范围，而应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。此类区域不纳入本对象类别，也无需作为灾害区域进行标注。