Simple download service (Atom) of the dataset: Hazard area of a PPRT on the department of the Meuse (55)

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 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 PPRTs the hazard levels are determined effect by effect on maps by type of effect and overall on an aggregated level on a synthesis map.

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.

本类指用于RPP风险分析的灾害图（hazard map）上标注的、受一种或多种灾害影响的区域。
灾害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，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。对研究区域内的某一特定点位分配灾害等级时，需综合考量该危险现象的发生概率及其强度等级。
针对PPRT，灾害等级需按效应类型在对应地图上逐效应确定，并在综合地图上以聚合层级的形式进行整体评定。
灾害图上标注的所有灾害影响区域均需纳入本类范畴。由防护结构保护的区域必须（可通过特定方式）予以标注，因为即便有防护结构，该区域仍可能因结构破损或失效而面临灾害风险。
灾害分区可视为经开发的数据集，其生成需整合多源计算、建模或观测得到的灾害数据。本类对象不涵盖这些源数据，相关源数据应由另一项专门针对灾害认知的标准进行规范。
研究区域内部分区域被划为‘无灾害或灾害可忽略区域’，即经研究确认无灾害影响的区域。此类区域不属于本类对象范畴，无需作为灾害分区进行标注。