Construction of an average indicator of potential noise exposure, and its sensitivity analysis in Marseilles city (France)

Alexis Bigot (1) , Céline Boutin (1) , Aude David (1) , Aurélie Bocquier , Sébastien Cortaredona , Pierre Verger

1 SolData Acoustic

The present study work was undertaken by SolData Acoustic and the Health regional Observatory (Southeastern France) within a research project aiming at the study of the links between road noise exposure and psychotropic drug consumption at a small-area level in the city of Marseilles. First, we built an average indicator of potential road noise exposure (PNEI) for the population living in each census block (the smallest sub municipal division with 1500 inhabitants on average). We calculated noise exposure using CadnaA software according to END method for noise mapping, and applied some improvements: we used observed mean speeds (instead of speed limitations), calculated mean noise level for each building (instead of maximum levels), and took floor levels into account. Second, we performed a sensitivity analysis to evaluate the impact of the variations of several parameters on model outputs. Sensitivity analysis shows that the most influent input parameters, at a global scale, are speed, then traffic flow. Propagation of uncertainties was performed on those parameters. Finally, uncertainties calculations on the PNEI will be taken into account in the analysis of the links between road noise exposure and psychotropic drug consumption.

Mots clés: noise exposure; health; indicator; uncertainties

Domaines: Acoustique [physics.class-ph]

Alexis Bigot, Céline Boutin, Aude David, Aurélie Bocquier, Sébastien Cortaredona, et al.. Construction of an average indicator of potential noise exposure, and its sensitivity analysis in Marseilles city (France). Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00810958⟩