Hazard areas of the PPRNs of the department of Southern Corsica

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 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 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 as prescribing areas (see definition of the PPR class).

本类指代用于RPP风险分析的灾害地图上标注的、受一种或多种灾害影响的区域。
灾害地图是灾害专项研究的成果，其核心目标为评估研究区域内任意点位处各类灾害的强度。针对不同灾害类型，需采用专属评估方法，据此在研究范围内划定若干区域，形成按灾害等级分级的区划体系。对境内某一特定点位进行灾害等级赋值时，需综合考量该危险现象的发生概率及其强度等级。
针对多随机PPRNs，灾害地图上的每个区域通常会通过其所受各类灾害对应的专属编码进行标识。
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（可采用特定标注方式），因为即便设有防护结构，该区域仍可能因结构破损或防护失效而面临灾害风险。
灾害区域可视为衍生数据集，其生成基于多源计算、建模或观测所得灾害数据的综合整合。本类对象不涵盖上述源数据，相关源数据应由另一项专门规范灾害认知的标准进行管理。
研究区域内部分区域被认定为"无灾害或灾害可忽略区域"，即经专项研究确认灾害影响为零的区域。此类区域无需纳入本类对象，也无需作为灾害区域进行标注。但对于天然RPP而言，监管区划可能将部分未受灾害影响的区域划定为指定管控区域（详见PPR类的定义）。