Area of hazard of the catchment areas of Valle and Vallon Saint Julien — municipality of Bonifacio

Area exposed to one or more hazards represented on the map of hazards used for risk analysis of the catchment areas of Valle and Vallon Saint Julien in the municipality of Bonifacio. The hazard map is the result of the flood risk study carried out by CEREMA in June 2015 which assessed the flood risk in these watersheds. This study was notified to the town hall on 8/10/2015. 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.本数据集对应博尼法乔（Bonifacio）市镇内瓦莱（Valle）与圣朱利安谷（Vallon Saint Julien）汇水区风险分析专用灾害地图中，受一种或多种灾害影响的区域。 该灾害地图源自法国风险、环境、交通与规划研究中心（CEREMA）于2015年6月开展的上述流域洪水风险评估研究，此项研究已于2015年10月8日通报至市镇政府。 本次评估针对不同灾害类型采用专属方法，通过划定研究范围内的多个区域，形成按灾害等级分级的分区体系。针对某一特定地域点位的灾害等级赋值，需综合考量该危险现象的发生概率与强度等级。 本数据集包含灾害地图上标注的全部灾害影响区域。受防护设施保护的区域也需被标注（可采用专属标识方式），因为此类区域仍存在灾害风险（如防护设施损毁或功能不足时）。 灾害影响区域可被视为经加工整合的数据集，其生成基于对多源计算、建模或观测所得灾害数据的综合合成。本数据集仅涵盖加工后的灾害区域数据，原始源数据的管理需遵循另一项针对灾害认知的相关标准。