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An investigation on the Fluctuation and variability of ambient noise in shallow waters of south west Bay of Bengal

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Title An investigation on the Fluctuation and variability of ambient noise in shallow waters of south west Bay of Bengal
 
Creator Mahanty, M M
Sanjana, M C
Latha, G
Raguraman, G
 
Subject Ambient noise
Fluctuation
Shallow waters
 
Description 747-753
Variability of ambient
noise in shallow south west Bay of Bengal is
investigated in the band 0.5 - 5.0 kHz using time series measurements during
Sept-Nov 2010. Data is segregated into southwest, transition and northeast
monsoon on the basis of seasons. Variability of Noise Level (NL) at the site is
mainly influenced by wind, shipping and biological activity along with
precipitation (during transition and northeast monsoon). NL increases and
generates broadband peaks in the band 2-4 kHz due to heavy precipitation. In
general, average NL increases as the season progresses from southwest to
northeast through transition period. But the variability in NL, reported in
terms of Standard Deviation (SD) , is high during transition (due to passage
of tropical cyclones), followed by southwest and northeast period. SD decreases
with increase in Beaufort (Bft), with รณ of 2.0
kHz for 5 Bft. The observed NL is compared with standard wind generated noise
spectra.
 
Date 2016-06-23T11:30:47Z
2016-06-23T11:30:47Z
2014-05
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/28761
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(5) [May 2014]