Assessing the Noise pollution level (NPL) and Traffic Noise Index(TNI) in rushhours of summer in the highways of Ahwaz city

سال انتشار: 1402
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 180

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شناسه ملی سند علمی:

HWCONF13_042

تاریخ نمایه سازی: 18 مرداد 1402

چکیده مقاله:

Introduction: Noise pollution is one of the major environmental problems in cities which hasbeen a growing concern in the last few years. One of the most important sources of thispollution is transportation and cars traffic. The present study was implemented in ۲۰۱۱ withan overall goal of assessment of noise pollution and traffic noise index in rush hours ofsummer in Ahwaz, Iran(۲۰۱۱)..Methods and Materials: In this descriptive study, ۷ roads of the main routs of Ahwaz whichhave high density of traffic are selected and , ۴۲ measuring stations were chosen. In them atmeasuring stations, on one day of week( saturday) ,at three time periods(۷-۸ Am. ۱۲-۱۳ Pm.۸-۹ PM), measurments were recorded that including ۶ parameters of traffic noise (Lmax , Lmin ,Leq , L۱۰ , L۵۰ , L۹۰). In this study the level of TNI, NPL were also studied. each measurementwas recorded for ۳۰ minutes. After transferring datas to computer, Spss and Excel softwareswere applied for statistical analysis and T-test and ANOVA were used for statistical tests.Then Regression multi- variables was tested on data in order to relate between traffic load andLeq.Results: The findings of this study showed that the average of equivalent Sound pressurelevel,also the average of TNI, NPL in all stations were equal to ۷۲/۵۴ ± ۳/۳۳,۷۲/۴۳± ۴/۲۵ and۸۱/۰۷± ۲/۳۰ respectively. The results of Pearson correlation Test about quantitative trafficdatas showed that Leq was directly related to the this variable (p<۰.۰۱).Conclusion: According to the results, it was found that Ahwaz has a higher noise pollution incomparison with outdoor permissible limit standard in Iran. So, it should seriously be takeninto consideration in order to control noise and prevent the effects.

نویسندگان

Muhammad Reza Monnazam Esmail Pour

Department of Professional Health Engineering, Department of Health, Medical school ofTehran, Iran.

Zahra Chabi Ahwazi

Department of Environmental Engineering – Air Pollution, Islamic Azad University,Khouzestan Sience and Research Branch, Ahwaz, Khouzestan, Iran.