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Geochemical studies in the Godavari Estuary, India

DRS at CSIR-National Institute of Oceanography

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Title Geochemical studies in the Godavari Estuary, India
 
Creator Somayajulu, B.L.K.
Martin, J.M.
Eisma, D.
Thomas, A.J.
Borole, D.V.
Rao, K.S.
 
Subject geochemistry
dissolved oxygen
iron
dissolved organic carbon
particulate organic carbon
silica
uranium isotopes
suspended particulate matter
 
Description The dissolved O sub(2), Fe, dissolved organic carbon (DOC), particulate organic carbon (POC), silica and U isotope measurements in reiver-estuarine waters of the Godavari and the concentrations of 23 elements in the suspended matter of the waters are reported. The DOC and Fe concentrations are lower compared with those in other estuaries of the world and are below the average value reported for world rivers. Silicon behaves non-conservatively; its depletion which is most likely due to biological activity during the non-monsoon periods of sampling ranges from 25 to 37%. The U isotopes behave conservatively although there is some scatter in the low-chlorinity (approx less than or equal to gCl l sup(-1)) region. Based on the data collected during non-monsoon seasons, the annual U input from Godavari to the Bay of Bengal is estimated to be approx 52 tons, although this has to be considered an approximate value owing to the absence of data during the monsoon period. The suspended matter concentrations, ranging from 4.2 to 7.9 mg l sup(-1), are one to two orders of magnitude lower than those of the main rivers on the west coast of India. Of the elemental concentrations and metal/Su ratios reported, Ag, Ai, Ba, Br, Ca and Zn show a large degree of scatter which has yet to be explained. Others, notably, rare earth elements (REE) show a near-constancy to slightly decreasing trend with increasing chlorinity above the approx 2 gCl l sup(-1) region
 
Date 2009-05-06T10:42:37Z
2009-05-06T10:42:37Z
1993
 
Type Journal Article
 
Identifier Marine Chemistry, Vol.43; 83-93p.
http://drs.nio.org/drs/handle/2264/2828
 
Language en
 
Rights Copyright [1993]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Elsevier