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Turbidity of the atmospheric and water at the major ports of India

DRS at CSIR-National Institute of Oceanography

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Title Turbidity of the atmospheric and water at the major ports of India
 
Creator Suresh, T.
Desa, E.
Rodrigues, A.
Ramdasan, K.
 
Subject atmospheric chemistry
turbidity
harbours
atmospheric chemistry
water
aerosols
seasonal variations
 
Description The atmospheric and water turbidity observed at nine major ports of India, namely Cochin, Mangalore, Mormugao, Mumbai, Jawaharlal Nehru (JNP), Kandla on the west coast and Tuticorin, Chennai and Visakhapatnam on the east coast, using the parameters derived from the ocean color satellite, Sea WiFS for the six years from 1998 to 2003 have been reported here. Aerosol optical depth (iota) at 865 nm is used to study the atmospheric turbidity and diffuse attenuation coefficient (Kd) at 490 nm to examine the water clarity. The atmospheric turbidities are found to be high over the ports of Mumbai, Jawaharlal Nehru, and Cochin (iota is greater than 0.18) while the lowest was observed at Kandla (0.136). Water clarity was found to be the lowest at Mumbai and JNP (Kd is greater than 0.3), while it was much better at Visakhapatnam and Chennai (Kd less than 0.13). The inter-annual variations of the atmospheric and water turbidity at the major ports have been looked into and have not found any significant variations. Atmospheric turbidity at Kandla was found to be increasing at 2.7% per year (geometric mean) while at other ports where increases were noticed included Mangalore, Mormugao and Visakhapatnam. (approx. 2%). Water turbidity at Cochin was found to be increasing at a pace of 6.2% per year, and similar trends have been observed at Chennai. The water clarity at the Visakhapatnam was found to improve noticeably over the years and similar trends were observed at Tuticorin. The seasonal variations of aerosol concentrations were observed at all ports, with relatively higher values being noticed during summer than winter. Water turbidity was found to be relatively lower for the ports on the east coast than those situated on the west coast of India
 
Date 2008-02-22T04:47:44Z
2008-02-22T04:47:44Z
2005
 
Type Journal Article
 
Identifier Environmental Geochemistry, Vol.8; 214-218p.
http://drs.nio.org/drs/handle/2264/894
 
Language en
 
Rights Copyright [2005]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice by copyright holder that the rights are voilated then the item would be withdrawn.
 
Publisher Osmania University