Noise Map Elaboration of an Area Located in Cidade Nova District, in the City of Marabá, Pará, Brazil
AbstractNoise pollution is directly linked to the disorderly growth of cities, where noise is characterized as one of the most worrying environmental risks in the world, coming from a wide variety of sources, from which traffic noise and noise from entertainment activities stand out, what makes them more problematic for being close to the population in general. The present work aimed to elaborate, using past data collected in 2016, a noise map of an area located in a segment of BR 230 (Transamazônica Highway) in Marabá, in the state of Pará, Brazil. The methodology used was exploratory, explanatory, and quantitative, with descriptive statistics of field data. The data collected in 2016 (geographical coordinates and sound intensity levels means) in three sections (AB, CD, EF) were plotted in Surfer 13 software, to elaborate a noise map of the studied area. The results indicated that the sound waves in AB and EF moved, in opposite directions, to CD, going towards the arboreal vegetation presents in the area, changing direction when colliding with it. Thus, it was concluded that roads, where the vehicle flow was lower, did not necessarily imply an increase or reduction in noise and that the direction of the wind did not influence the waves’ propagation guidance and direction. Also, there was a reduction, although small, in the Sound Intensity Levels (SIL) and reflection of the waves when they collided with the sound barrier exerted by trees in the area.Keywords: noise pollution, noise map, geographic information systems (GIS)
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