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Noise Pollution in the Indian Cities

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    Noise pollution may be defined as the state of discomfort and restlessness to human beings caused by unwanted high intensity sound (noise). It is of both natural and artificial type. Former is caused by natural sources like cloud thunder, hailstorms, wa¬terfalls, avalanches and landslides etc. Latter is the outcome of human activities like running of ma¬chines, automobiles, aircrafts, radios televisions, exhaust-fans, lawn-movers, blowing of sirens, loud¬speakers, and organizing cultural programs, dance, and music etc. It is the artificial noise pollution, which is increasing due to growing urban and indus¬trial activities and is a matter of serious concern. Noise level is measured in terms of decibel (dB) which is the unit of measurement of intensity of sound.

    A noise of zero dB on the decibel scale represents the faintest sound audible to human ear while that of 180 dB shows the sound of large rocket engine. In general, noise above 70 dB is harmful to human beings. In India noise pollution is growing in recent years due to increase in industrial, urban, transport and construction activities. A number of studies have revealed that noise pollution is a greater men¬ace in most of the million cities of India character¬ized with high traffic density and .industrial activi¬ties. However, the level of pollution varies in ac¬cordance with the location, time, population density and functions of the city. The study of Kanpur (Kumra, 1982), Mumbai and Chennai have revealed common features, i.e. high noise level in the areas located close to aerodromes, railway stations, bus terminals, industrial establishments, busy markets, high density traffic routes and high population den¬sity clusters. Loudspeakers and traffic noise is the great nuisance in the Indian cities.

    The level of pollution increases during festivals, cultural pro¬grammes, elections, national festivities and victo-ries and traffic jams. Most of our cities have higher level of noise pollution than the permissible limit of 60-70 dB. Delhi (89 dB), Kolkata (87 dB), Mumbai (85 dB), Chennai (82 dB), Kochi (80 dB), Madurai (75 dB), Nagpur (75 dB) and Thiruvananthapuram (70 dB) may be cited as examples. A study by the Environmental Monitoring Laboratory of the Indus¬trial Toxocology Research Centre (Lucknow) has shown that noise level is higher than 90 dB near Hazaratganj crossing, King George Medical Col¬lege, NurManzil, Royal Hotel crossing, Gol Darwaza, Naka Hindola, Charbagh railway station, Lalkuan, Aminabad and Sadar crossing. Continuous and prolonged exposure to noise polution causes several disorders and ailments in human beings which ranges from mild annoyance, mental tension, headache, fatigue, irritation, high blood pressure, stomach trouble, psychological prob¬lems, low working efficiency, and traffic accidents to permanent deafness.

    According to a study conducted in five southern cities including Chennai, Coimbatore, Madurai, Kochi and Thiruvananthapuram to find out the Noise Induced Hearing Loss (NIHL) among the workers in the textile, automobile, oil, fertilizers and chemical industries, one out of every four work¬ers suffered from incurable NIHL.

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    Noise Pollution in the Indian Cities. (2016, May 16). Retrieved from https://graduateway.com/noise-pollution-2/

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