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          </gmd:result>
        </gmd:DQ_DomainConsistency>
      </gmd:report>
      <gmd:lineage>
        <gmd:LI_Lineage>
          <gmd:statement>
            <gco:CharacterString>Principe d’élaboration des cartes de bruit stratégiques
Les cartes de bruit sont établies, avec les indicateurs harmonisés Lden (pour le jour) et Ln (pour la nuit). Les niveaux de bruit sont évalués au moyen de modèles numériques intégrant les principaux paramètres qui influencent le bruit et sa propagation. 
Les cartes de bruit ainsi réalisées représentent :
les zones exposées à + de 55 décibels en Lden (le jour) 
les zones exposées à + de 50 décibels en Ln (la nuit)
Elles représentent les courbes isophones de 5 en 5 décibels.
Carte de dépassement des valeurs limites :
Il s’agit de cartes représentant les zones où les valeurs limites en Lden (jour) et en Ln (nuit) sont dépassées (article R 572-5 du Code de l’Environnement).
Cartes représentant les zones où les valeurs limites en Lden (jour) et en Ln (nuit) sont dépassées (article R 572-5 du Code de l’Environnement).</gco:CharacterString>
          </gmd:statement>
        </gmd:LI_Lineage>
      </gmd:lineage>
    </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
</gmd:MD_Metadata>

