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Dissolved oxygen - A target indicator in determining use of the Gulf of Kachchh waters

DRS at CSIR-National Institute of Oceanography

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Title Dissolved oxygen - A target indicator in determining use of the Gulf of Kachchh waters
 
Creator Desa, E.
Zingde, M.D.
Vethamony, P.
Babu, M.T.
DeSousa, S.N.
Verlecar, X.N.
 
Subject dissolved oxygen
temporal variations
spatial variations
biochemical oxygen demand
coastal zone
marine parks
water quality
sanctuaries
 
Description Spatial and temporal variations of Dissolved Oxygen (DO) and Biochemical Oxygen Demand (BOD) in the Gulf of Kachchh (GoK), India are assessed based on data collected since 1976.DO concentrations in the interior GoK vary within a narrow range (6.05 -6.86 mgl sup(-1)), whereas near-shore waters show wider variations (3.5 -7.8 mgl sup(-1)). The DO concentration levels in the Gulf waters are close to saturation, varying from 75.4%to 108.6%, which is much higher than the 60%saturation level set for the SW-1 waters. BOD -DO simulation shows that when effluents containing a BOD concentration of 50.0 mgl sup(-1) are introduced at three select locations, DO reduces from 5.1 mgl sup(-1) to 3.1,5.0 and 3.8 mgl sup(-1), respectively, indicating a strong sensitivity to effluent load. Based on the DO analysis, BOD assimilation capacity of coastal waters around the Marine National Park (MNP) and Marine Sanctuary (MS) in the Gulf is determined. DO available for utilization for various categories of water use is illustrated, keeping in mind the ecology of MNP and MS areas. The significance of DO as a target indicator to zone the Gulf for different water use is highlighted in this study.
 
Date 2008-02-22T06:20:31Z
2008-02-22T06:20:31Z
2005
 
Type Journal Article
 
Identifier Marine pollution bulletin, Vol.50; 73-79p.
http://drs.nio.org/drs/handle/2264/992
 
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 If it is brought to our notice by copyright holder that the rights are voilated then the item would be withdrawn.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 Elsevier