Risk Assessment of Aircraft Noise on Sleep in Montreal

Autor: Céline Plante, Louis-François Tétreault, Audrey Smargiassi, Stéphane Perron, Norman King, Sophie Goudreau
Rok vydání: 2012
Předmět:
Zdroj: Canadian Journal of Public Health. 103:e293-e296
ISSN: 1920-7476
0008-4263
DOI: 10.1007/bf03404238
Popis: OBJECTIVE: Estimate the number of awakenings additional to spontaneous awakenings, induced by the nighttime aircraft movements at an international airport in Montreal, in the population residing nearby in 2009. METHODS: Maximum sound levels (L AS,max ) were derived from aircraft movements using the Integrated Noise Model 7.0b, on a 28 x 28 km grid centred on the airport and with a 0.1 x 0.1 km resolution. Outdoor L AS,max were converted to indoor L AS,max by reducing noise levels by 15 dB(A) or 21 dB(A). For all grid points, L AS,max were transformed into probabilities of additional awakening using a function developed by Basner et al. (2006). The probabilities of additional awakening were linked to estimated numbers of exposed residents for each grid location to assess the number of aircraft-noise-induced awakenings in Montreal. RESULTS: Using a 15 dB(A) sound attenuation, 590 persons would, on average, have one or more additional awakenings per night for the year 2009. In the scenario using a 21 dB(A) sound attenuation, on average, no one would be subjected to one or more additional awakenings per night due to aircraft noise. CONCLUSION: Using the 2009 flight patterns, our data suggest that a small number of Montreal residents are exposed to noise levels that could induce one or more awakenings additional to spontaneous awakenings per night.
Databáze: OpenAIRE
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