Geospatial analysis of environmental noise levels in a residential area in Lagos, Nigeria

IF 1.7 Q2 ACOUSTICS Noise Mapping Pub Date : 2020-01-01 DOI:10.1515/noise-2020-0019
R. Alani, Olajomi Mary Ogunmoyela, C. Okolie, O. Daramola
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引用次数: 7

Abstract

Abstract Noise is an inevitable part of daily life and has been identified as a cause of several health deficiencies across the world. It has increasingly become a significant concern on the health and well-being of people. Studies are required to advance knowledge on the sources and impacts of noise in residential neighbourhoods of Lagos State, Nigeria. Therefore, this study assesses the spatial variation of noise levels within a section of the Festac residential area in Lagos in line with noise limits specified by the World Bank Group International Finance Corporation (IFC) Environmental, Health, and Safety (EHS) Guidelines and the Nigerian National Environmental Standards and Regulations Enforcement Agency (NESREA) Noise Standards and Control guidelines for community noise. Data for this research come from a field study comprising measurements of noise levels from 6 observation stations and questionnaire survey with 200 respondents. The criteria for siting the stations was based on factors such as proximity to the roadside, land use and population density, while the questionnaire was administered at random to assess the peoples’ level of awareness on the sources and effects of noise. A digital sound level meter was used to measure noise level variations over a period of 3 weeks for morning, afternoon and evening periods. The measured noise levels were analysed using Analysis of Variance (ANOVA) statistics and the Kriging Geostatistical interpolation technique. Also, logistic regression was used to determine the relationship between the respondents’ perceptions to noise and noise levels. The results indicated that the mean noise levels were within the approximate range of 53.5 – 94.0dBA over the entire period. The highest mean noise levels occurred in the north-western part of the study area where a bus park is present. In general, the noise levels in the area surpass the recommended noise limit of 55dBA, and the logistic regression showed that morning, afternoon and evening mean noise levels were significant predictors of noise variation as perceived by the dwellers. Proper legislation to regulate human activities with respect to noise generation is highly recommended to the local, state and national legislators.
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尼日利亚拉各斯某居民区环境噪声水平的地理空间分析
摘要噪音是日常生活中不可避免的一部分,已被确定为世界各地几种健康缺陷的原因。它越来越成为人们健康和福祉的一个重要问题。需要进行研究,以提高对尼日利亚拉各斯州居民区噪音来源和影响的认识。因此,本研究根据世界银行集团国际金融公司(IFC)环境、健康、,和安全(EHS)指南以及尼日利亚国家环境标准和法规执行局(NESREA)社区噪音标准和控制指南。这项研究的数据来自一项实地研究,包括对6个观测站的噪音水平的测量和对200名受访者的问卷调查。车站选址的标准是基于靠近路边、土地使用和人口密度等因素,而问卷是随机进行的,以评估人们对噪音来源和影响的认识水平。数字声级计用于测量上午、下午和晚上3周内的噪音水平变化。使用方差分析(ANOVA)统计和克里格地质统计插值技术对测量的噪声水平进行分析。此外,还使用逻辑回归来确定受访者对噪音的感知和噪音水平之间的关系。结果表明,整个时段的平均噪声水平约在53.5–94.0dBA之间。最高的平均噪音水平出现在研究区域的西北部,那里有一个公共汽车停车场。总体而言,该地区的噪声水平超过了55dBA的建议噪声限值,逻辑回归表明,上午、下午和晚上的平均噪声水平是居民感知到的噪声变化的重要预测因素。强烈建议地方、州和国家立法者制定适当的立法来规范与噪音产生有关的人类活动。
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来源期刊
Noise Mapping
Noise Mapping ACOUSTICS-
CiteScore
7.80
自引率
17.90%
发文量
5
审稿时长
12 weeks
期刊介绍: Ever since its inception, Noise Mapping has been offering fast and comprehensive peer-review, while featuring prominent researchers among its Advisory Board. As a result, the journal is set to acquire a growing reputation as the main publication in the field of noise mapping, thus leading to a significant Impact Factor. The journal aims to promote and disseminate knowledge on noise mapping through the publication of high quality peer-reviewed papers focusing on the following aspects: noise mapping and noise action plans: case studies; models and algorithms for source characterization and outdoor sound propagation: proposals, applications, comparisons, round robin tests; local, national and international policies and good practices for noise mapping, planning, management and control; evaluation of noise mitigation actions; evaluation of environmental noise exposure; actions and communications to increase public awareness of environmental noise issues; outdoor soundscape studies and mapping; classification, evaluation and preservation of quiet areas.
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