Map visualisation service (WMS) of the dataset: Plan for the prevention of natural hazards of landslides — Municipality of Durfort-Lacapelette — Area of hazard — Department of Tarn-et-Garonne

Area exposed to one or more hazards shown on the hazard map used for the RPP risk analysis. The hazard map is the result of the study of hazards whose objective is to assess the intensity of each hazard at any point in the study area. The assessment method is specific to each type of hazard. It leads to the delimitation of a set of zones on the study perimeter constituting a graduated zoning 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 works must be represented (possibly in a specific way) because they are always considered subject to hazard (case of rupture or insufficiency of the structure). Hazard zones can be described as elaborated data to the extent that they result from a synthesis using several calculated, modelled or observed hazard data sources. These source data are not concerned by this class of objects but by another standard dealing with the knowledge of hazards. Certain areas of the study area are considered to be ‘zero or insignificant hazard areas’. These are the areas where the hazard has been studied and is zero. 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 PPRs, regulatory zoning may classify certain areas not exposed to hazard as a prescribing zone (see definition of ZonePPR class).本类对象指用于RPP风险分析的灾害地图上标注的、暴露于一种或多种灾害的区域。 灾害地图是灾害专项研究的成果，该研究旨在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，据此在研究范围内划定若干区域，形成按灾害等级划分的分级分区体系。在确定研究区域内给定点位的灾害等级时，需综合考量该危险现象的发生概率及其强度水平。 针对多随机PPRN，每个区域通常会在灾害地图上通过其暴露的各类灾害对应的专属编码进行标识。 本类涵盖灾害地图上标注的全部灾害影响区域。受防护工程保护的区域也必须予以表征（可采用专属表征方式），因为即便设有防护结构，此类区域仍面临灾害风险（例如防护结构发生破损或效能不足的情形）。 灾害区域可归类为精细化数据，其生成需整合多类经计算、建模或观测得到的灾害数据源。本类对象不涉及此类源数据，相关源数据应由另一项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“零灾害或微灾害区域”，即经专项研究确认灾害风险为零的区域。此类区域不属于本类对象范畴，无需作为灾害区域进行表征。不过针对天然PPR，监管分区可能将未暴露于灾害的区域划定为管控区域（详见ZonePPR类的定义）。