data download service (WFS) from: Meeting- Strategic Noise Map: R.Mar. Leclerc card type Alden
收藏资源简介：
— type A card in Lden: areas exposed to + 55 dB(A) with curves isophones from 5 to 5 dB(A): ]55;60],]60,65],]65,70],]70,75],]>75] — Lden: noise discomfort index weighted by different periods one day, i.e.: day/day: 6am-18h evening/evening: 18h-22h night/night: 10h-6h — dB(A): unit of measurement expressing an intensity level (decibel) weighted according to the physiological characteristics of the human ear. Sources: CE Med2009 + IGN bdCarto C_StDenis C_COMMUNE_cartelie c_DDI_LD_65_Dept974_V7_finite c_DDI_LD_55_Dept974_V7_finite C_departments C_MlLeclerc_Location C_StDenis_ Tags c_DDI_LD_60_Dept974_V7_finite C_nationals c_DDI_LD_70_Dept974_V7_finite c_DDI_LD_75_Dept974_V7_finite
— 昼间-晚间-夜间等效声级（Lden）数据集内的A型区域卡片：涵盖暴露于≥55 dB(A)的区域，附带等声级线（isophones），其等声级区间为]55;60]、]60,65]、]65,70]、]70,75]、]>75] — 昼间-晚间-夜间等效声级（Lden）：基于不同时段加权的噪声不适指数，具体时段划分如下：昼间：6时至18时；晚间：18时至22时；夜间：10时至6时 — 分贝A计权（dB(A)）：依据人耳生理特性加权的声强级计量单位，其计量尺度为分贝 数据来源：CE Med2009、IGN bdCarto、C_StDenis、C_COMMUNE_cartelie、c_DDI_LD_65_Dept974_V7_finite、c_DDI_LD_55_Dept974_V7_finite、C_departments、C_MlLeclerc_Location、C_StDenis_Tags、c_DDI_LD_60_Dept974_V7_finite、C_nationals、c_DDI_LD_70_Dept974_V7_finite、c_DDI_LD_75_Dept974_V7_finite
