Simple download service (Atom) of the dataset: Hazard areas of the Natural Risk Prevention Plan (PPRN) of Areae on the Adour — Landes (40)

N_ZONE_ALEA_PPRN_40DDTM20100001_S_040
Hazard areas of the Natural Risk Prevention Plan (PPRN) of Areae on the Adour — Landes (40)

Summary: Area exposed to one or more hazards represented on the hazard map used for risk analysis of the Risk Prevention Plan (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).

N_ZONE_ALEA_PPRN_40DDTM20100001_S_040
阿杜尔—朗德（40）地区自然风险预防计划（Natural Risk Prevention Plan，PPRN）灾害区域

摘要：本数据集涵盖风险预防计划（Risk Prevention Plan，RPP）风险分析所依托的灾害地图中标记的、受一种或多种灾害影响的区域。该灾害地图源于灾害专项研究，其核心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，最终将研究范围内的区域划分为按灾害等级分级的若干片区。针对区域内特定点位的灾害等级划定，需综合考量危险现象的发生概率及其强度等级。

针对多灾种自然风险预防计划，灾害地图上的每个片区通常会通过对应其所受灾害的编码进行标识。本数据集涵盖灾害地图上标注的全部灾害区域。受防护结构保护的区域同样需被标注（可采用特定标注方式），因为即便有防护结构，该区域仍面临灾害风险（如结构破损或防护能力不足的情况）。

灾害片区可视为衍生数据：其生成依托多源计算、建模或观测得到的灾害数据的综合分析。本数据集类不涉及此类源数据，相关内容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“无灾害或灾害可忽略区域”，即经研究确认无灾害风险的区域。此类区域不属于本数据集类范畴，无需作为灾害区域进行标注。但针对自然风险预防计划，监管分区可能将未受灾害影响的区域划为管控区域（详见PPR类别的定义）。