Hazard Avalanche of PPRN approved in Haute-Garonne

Hazard zones in approved Natural Risk Prevention Plans. File conforming to the COVADIS standard (table ALEA_PPRX) with 2 exceptions: — Contains only avalanche hazards (other hazards of PPRNs are in different files). — Group the avalanche hazards of all approved PPRNs in a single file for the entire department. 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. 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).经批准的自然风险预防计划中的危险区域。 符合COVADIS标准（ALEA_PPRX表）的文件存在两项例外情况： — 仅涵盖雪崩危险（自然风险预防计划（PPRNs）的其他危险类型存储于不同文件中）。 — 将全部门范围内所有经批准的自然风险预防计划中的雪崩危险区域整合至单个文件中。 用于风险预防计划（RPP）风险分析的危险地图上所标注的、暴露于一种或多种危险的区域。 危险地图是危险研究的成果，该研究的目标是评估研究区域内任意点位的各类危险强度。评估方法因危险类型而异，最终会在研究范围内划定若干区域，形成按危险等级分级的区划。在特定领土点位分配危险等级时，需综合考量危险现象的发生概率及其强度等级。 危险地图上标注的所有危险区域均纳入本数据集。受防护结构保护的区域也必须予以标注（可采用特定方式），因为此类区域始终会被视为处于危险影响范围内（如结构发生破损或防护不足的情况）。 危险区域可被视为经加工生成的数据，其生成过程为对多源计算、建模或观测得到的危险数据进行综合整合。本数据集类别不涵盖这些源数据，相关源数据需遵循另一项针对危险认知的标准。 研究区域内的部分区域被视为"无危险或危险可忽略区域"，即经研究确认无危险的区域。此类区域不纳入本数据集类别，也无需作为危险区域进行标注。不过，针对自然风险预防计划（RPP），监管区划可能会将部分未暴露于危险的区域划定为指令性区域（详见PPR类别的定义）。