Intensified oxygen minimum zone on the western shelf of Bay of Bengal during summer monsoon: Influence of river discharge

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dc.contributor.author Sarma, V.V.S.S.
dc.contributor.author Krishna, M.S.
dc.contributor.author Viswanadham, R.
dc.contributor.author Rao, G.D.
dc.contributor.author Rao, V.D.
dc.contributor.author Sridevi, B.
dc.contributor.author Kumar, B.S.K.
dc.contributor.author Prasad, V.R.
dc.contributor.author Subbaiah, Ch.V.
dc.contributor.author Acharyya, T.
dc.contributor.author Bandopadhyay, D.
dc.date.accessioned 2013-03-05T07:30:45Z
dc.date.available 2013-03-05T07:30:45Z
dc.date.issued 2013
dc.identifier.citation Journal of Oceanography, vol.69(1); 2013; 45-55
dc.identifier.other no
dc.identifier.uri http://drs.nio.org/drs/handle/2264/4260
dc.description.abstract A study on biogeochemical cycling in the west coastal Bay of Bengal was undertaken during the peak discharge period to understand the influence of enhanced stratification and primary production on the possible intensification of the oxygen minimum zone (OMZ). Our study reveals that oxygen concentrations were below the detection limits in the northwestern (NW) coastal Bay of Bengal between 100 and 500 m associated with strong stratification and high phytoplankton biomass. Such low oxygen concentrations have never been reported so far from the coastal Bay of Bengal. Despite the existence of an environment conducive to denitrification in the coastal Bay of Bengal, accumulation of neither secondary nitrite nor nitrous oxide (N sub(2)O) was observed. The absence of denitrification was reported to be caused by faster scavenging of organic matter and low bacterial respiration rates; in contrast, our results suggest that neither of these factors are potential reasons for the absence of denitrification in the coastal Bay of Bengal.
dc.language.iso en
dc.publisher Springer
dc.relation.requires J_Oceanogr_69_45.jpg
dc.rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2012] Springer.
dc.subject oxygen minimum layer
dc.subject river discharge
dc.subject stratification
dc.subject phytoplankton
dc.title Intensified oxygen minimum zone on the western shelf of Bay of Bengal during summer monsoon: Influence of river discharge
dc.type Journal Article


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