Zoning Acoustic of Khalkhal City in winter and Summer
Journal Title: International Journal of Advanced Biotechnology and Research. - Year 2016, Vol 7, Issue 1
Abstract
ABSTRACT Since the first automobile emerged, pollution in urban areas has become an issue that is still largely unresolved. Many people complain about traffic noise. Noise is unwanted sound and it is one of the main concerns of the world, especially in urban areas of both developed and developing. In recent years, urbanization and industrialization around the world have exacerbated the problem of surround sound. The aim of this study is to identify the level of noise pollution in the geographical area of Khalkhal City. Use the map of sound, the 22 station at regular intervals of 500 meters in a systematic random sampling; measurements were carried out in the morning and evening periods in winter 2014 and summer 2015 through audiometer machine cell450. The results showed that the average noise level of Khalkhal City in terms of parameters Leq during the summer months and winter is 50.64 dB. This level of 49.17 dB in residential areas and in residential areas - trade reported 58.19 dB higher than the national standard noise level indicator. The highest and the lowest noise level, respectively, Station Moallem Square (58.69 dB) and Najaf neighborhood (42.89 dB) was determined.
Authors and Affiliations
Seyyedeh Narges Karimpour and Fatemeh Nasehi*
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