Dataset Direct Download Service (WFS): Layer of seismic hazards in Meurthe-et-Moselle

Seismicity is not evenly distributed throughout the metropolitan area. In order to make the appropriate arrangements for the degree of exposure of each municipality, the legislator relies on a national seismic hazard mapping (seismic zoning). This mapping is proposed on the basis of a simplified classification at the level of the entire national territory (metropolicy and Antilles) and covering all the municipalities. This zoning is applicable to buildings and structures built to accommodate populations, to perform socio-economic functions or to maintain the functioning of the State. “Normal hazard” buildings are classified by size categories whose crossing with the seismicity zone in which they are located determines the seismic requirements to be complied with (more information). The approach is different for nuclear installations. The seismic stress likely to affect them is defined on the basis of specific studies carried out for each site, in order to take account of their particular geological and seismological conditions. On 1 May 2011, the new seismic zoning of France for conventional construction at “normal risk” entered into force, following the Order of 22 October 2010 “on the classification and rules of seismic construction applicable to buildings of the class of the normal risk” and Decrees No 2010-1254 on the prevention of seismic risk and No. 2010-1255 on the delimitation of seismic zones in the French territory. The new mapping promulgated in 2010 (Decree of 22 October 2010 and entered into force on 1 May 2011) is based on a so-called probabilistic assessment of seismic hazard. This approach aims at estimating the vibrational seismic movement likely to be achieved or exceeded based on a fixed probability over a given period of time, e.g. 10 % over a 50-year period for conventional construction. This type of approach allows to take into account a very wide range of seismic scenarios weighted according to their probability of occurrence. IRSN participated in the development of this new map of the seismic hazard of France, as an expert for the Ministry of the Environment. This zoning divides the French territory into 5 areas of seismicity (very small, weak, moderate, medium, strong). In zones 2 to 5, seismic construction rules apply to “normal risk” buildings and bridges. This concerns about 21 000 municipalities instead of 5,000 previously (areas Ia, II and III). In addition, the Order of 24 January 2011 (amending the Order of 4 October 2010 on the prevention of accidental risks in installations classified for the protection of the environment subject to authorisation) lays down the seismic rules applicable to certain classified installations (excluding nuclear installations which are dealt with by a specific regulation — RFS 2001-01) on the basis of this new seismic zoning of France. Layer used in web dynamic maps Added on 04/01/2022 for CARTO 2地震活动性在大都市区内并非均匀分布。为合理配置各直辖市的抗震设防烈度，立法机构依托全国地震危险性区划图（seismic hazard mapping）开展工作。该区划图基于覆盖全国领土（包括大都会区与安的列斯群岛）全部直辖市的简化分类方案制定。 该地震区划适用于用于容纳民众、承载社会经济功能或维持国家运转的建筑与构筑物。"常规风险"类建筑按规模类别进行分类，结合其所在地震活动带，确定需满足的抗震要求（详见更多信息）。核设施的抗震设防要求则有所不同：针对其特殊的地质与地震地质条件，需通过针对每个场址开展的专项研究，确定其可能承受的地震作用。 2011年5月1日，针对"常规风险"建筑的法国新版地震区划正式生效，该标准依据2010年10月22日发布的《关于常规风险类建筑抗震分类与适用规则的命令》，以及2010年第1254号《地震风险防治政令》与2010年第1255号《法国领土地震区划划定政令》。 2010年发布并于2011年5月1日生效的新版区划图，采用基于概率的地震危险性评估方法。该方法旨在估算某一固定时段内可能发生或超越的地震振动强度，例如常规建筑取50年超越概率10%的地震动参数。此类方法可综合考量各类地震场景，并依据其发生概率赋予相应权重。法国环境部专家——法国核安全与辐射防护研究院（IRSN）参与了法国新版地震危险性区划图的编制工作。 该地震区划将法国领土划分为5个地震活动等级区域（极弱、弱、中等偏强、中等、强）。在2至5级区域内，常规风险类建筑与桥梁需遵循抗震建筑规则。该区划覆盖约21000个直辖市，相较此前仅覆盖5000个直辖市的旧区划（原Ia、II、III级区域）范围大幅扩展。 此外，2011年1月24日发布的《修订2010年10月4日关于受许可监管的环境保护类设施意外风险防治命令》，依据法国新版地震区划，规定了部分特定分类设施的抗震规则（核设施除外，其抗震要求由专项法规RFS 2001-01另行规范）。 网络动态地图所用图层 2022年1月4日新增，用于CARTO 2