Simple download service (Atom) of the dataset: Plan to prevent the natural risks of landslides — Municipality of Piquecos — Zone d’alas — Department of Tarn-et-Garonne.

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 type of hazard. 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. Award

from a hazard level to 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

specific) because they are always considered to be subject to hazard (case of breakage or inadequacy of the work).
Hazard zones may be described as data compiled to the extent that they result from a synthesis using multiple calculated hazard data sources,

modelled or observed. 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 in a prescribing zone (see definition of Class PPR).

本类指用于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。
灾害地图是灾害研究的成果，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，其成果为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。为研究区域内指定点位赋予灾害等级时，需综合考量危险现象的发生概率与强度水平。
针对多随机PPRN，灾害地图上的每个分区通常会通过其暴露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需纳入本类范畴。受防护结构保护的区域也必须予以标注（可采用专属标识），因为即便设有防护结构，该区域仍可能遭受灾害影响（例如防护结构失效或防护能力不足的情况）。
灾害分区可被视为整合多源数据的成果，这些数据涵盖经计算、建模或观测获取的各类灾害源数据。本类对象不涉及此类源数据，相关规范由另一项灾害认知相关标准予以规定。
研究区域内部分区域被视为"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。
但对于天然RPP，监管分区体系可将部分未受灾害影响的区域归类至规定性分区（详见PPR类别的定义）。