Map Viewing Service (WMS) of the dataset: Aggregation generic tables noise zones type A Lden index in Héault

Aggregation of generic tables describing the Noise Zones for all terrestrial infrastructure, map type A and Lden index. ‘Type a’ exposure cards: maps to be made within the framework of the CBS pursuant to Article 3-II-1°-a of the Decree of 24 March 2006. This is a dataset representing for the year of mapping: — areas exposed to more than 55 dB(A) in Lden They represent the isophone curves of 5 in 5 dB(A). Lden: sound level indicator means Level Day-Evening-Night. It corresponds to an equivalent 24-hour sound level in which evening and night noise levels are increased by 5 and 10 dB(A), respectively, to reflect greater discomfort during these periods. Aggregation obtained by the QGIS MIZOGEO plugin made available by CEREMA. Data source by infrastructure: CEREMA.本数据集为涵盖所有陆地基础设施噪声分区、A型地图及Lden指数（Day-Evening-Night Sound Level）的通用数据表集合。 “A型”噪声曝露卡片： 需依据2006年3月24日法令第3-II-1°-a条，在CBS框架内制作相关地图。本数据集表征制图年份的如下内容： — Lden指数超过55 dB(A)的曝露区域 该数据集以5 dB(A)为间隔绘制等声级曲线。 Lden指数：即昼夜时段加权等效声级，指对24小时等效声级的傍晚时段与夜间时段分别附加5 dB(A)与10 dB(A)的加权补偿，以反映该时段内噪声带来的更高扰民程度。 本聚合数据集由CEREMA提供的QGIS MIZOGEO插件生成。 基础设施类数据来源：CEREMA。