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Abstract - Issue Nov 2012, 33 (6) Back
nstantaneous and historical temperature effects on a-pinene
Dynamics of road
traffic noise in Bhadrak city, India
Author
Details
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Bijay
Kumar Swain
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Department
of Environmental Science, Utkal University, Bhubaneswar-751 004, India
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Santosh
Kumar Panda
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Department
of Physics, Dr. J.N.College, Balasore-756 021, India
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Shreerup
Goswami
(Corresponding author)
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Department of Geology, Ravenshaw
University, Cuttack-753 003, India
e-mail : goswamishreerup@gmail.com
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Publication
Data
Paper received:
19 August 2011
Revised received:
08 November 2011
Accepted:
22
December 2011
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Abstract
Road
traffic noise assessed in 13 different squares of major intersection points
in Bhadrak city during four different specified times i.e. 7-10 a.m.,
11a.m.-2 p.m., 3-6 p.m. and 7-10 p.m.. Road traffic was found to be the most
important source of community noise at the studied sites. The noise levels of
all the 13 squares were found to be beyond the permissible limit [70 dB (A)]
during day time. Leq (equivalent noise level) values ranged from 93.4 to
100.5; 91.5 to 100.6; 95.1 to 107.3 and 97.3 to 106.3 dB during 7-10 a.m.,
11a.m.-2 p.m., 3-6 p.m. and 7-10 p.m. respectively. LNP values range from
115.7 to 127.7; 114.2 to 129.8; 118.2 to 138.2 and 120.7 to 135 dB, while TNI
values range from 134.3 to 154.7; 130.7 to 157.9; 136.7 to 168.2 and 137.2 to
165 dB during 7-10 a.m., 11a.m.-2 p.m., 3-6 p.m. and 7-10 p.m. respectively.
Reprehensibly, even minimum LNP and TNI values are more than 114 and 130 dB
respectively. Analysis of variance also computed for investigated squares at
the peak hour i.e. 7-10 p.m. to infer the level of significance. The observed
value of F (0.47) was less than the tabulated values and was not significant
at both 5 and 1% levels of significance. Thus, the noise levels of different
squares did not differ significantly at their peak hours. A preliminary
public health survey carried out based on questionnaire method amongst 202
local inhabitants reveal the degree of annoyance due to road traffic noise.
Key words
Road
traffic, Noise pollution, Noise descriptors, Health survey, Bhadrak
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