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A GIS – based method for assessment and mapping of noise pollution in Ota metropolis, Nigeria

Oyedepo, Sunday Olayinka and Adeyemi, Gideon Adewale and Olawole, C. Olukunle and Olawole, O.I. and Fagbemi, O.K. and Solomon, R. and Ongbali, Samson O. and Babalola, P.O. and Dirisu, Joy Favour and Efemwenkiekie, K. U. and Adekeye, T. and Nwaokocha, Collins N. (2019) A GIS – based method for assessment and mapping of noise pollution in Ota metropolis, Nigeria. MethodsX, 6. pp. 447-457.

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A detailed method used for assessing and mapping noise pollution levels in Ota metropolis, Nigeria using ArcGIS 10.5 Software is presented in this paper. Noise readings were measured at a time interval of 30 min for each site considered using a precision grade soundlevel meter. The noise map developed was based on the computed values of average equivalent noise (LAeq) for the selected locations. Results of this study show that the A weighted sound level (LAeq), the background noise level (L10) and the peak noise level (L90) vary with location and period of the day due to traffic characteristics especially traffic volume, vehicle horns, vehicle mounted speakers, and unmuffled vehicles at road Junctions, major roads, motor parks and commercial centres. Based on the U.S. Department of Housing and Urban Development (HUD) recommendations and standards, only one (1) out of the 41 locations considered is under normally acceptable situation, while 12 locations are under normally unacceptable and the noise levels of the rest locations are clearly unacceptable. Results of this study are useful as reference and guideline for future planning and regulations on noise limit to be implemented for urban areas like Ota Metropolis.

Item Type: Article
Uncontrolled Keywords: Noise descriptors, Noise pollution level, Noise map, GPS, Background noise, Peak noise
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 04 Jun 2019 12:03
Last Modified: 04 Jun 2019 12:03

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