Initial data
A set of data including two sonBases files, four RVB images of the Vernier's region and a a vector file highlighting the limits of the municipality of Vernier is used to carry out the study.
- The four RVB images or orthophotos were downloaded from the Swisstopo website managed by the Federal Office of Topography (direct link to the website: https://www.swisstopo.admin.ch/fr/home.html). Note that orthophotos were taken in 2014 with a ground resolution of 0.5 m.
- The vector file with the limits of the municipality of Vernier have no specified sources.
- As said previously, two sonBases files in form of raster were investigated. One including the daily noise in Vernier and its periphery, and the second one the noise generated at night. An important series of data was combined in order to produce the noise data set more commonly named, SonBase. Noise calculations were achieved by integrated data from different Federal Offices (e.g. Federal Offices of Roads FEDRO, Transport FOT, Civil Aviation FOCA and so on). Geographic features required for the noise calculation were issued once more from the Federal Office of Topography (i.e. vectorised map of Switzerland 1: 25 000; and the digital elevation model DEM, DHM25) .