• Login
    View Item 
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Geochemistry of surficial sediments along the central southwest coast of India - Seasonal changes in regional distribution

    Thumbnail
    View/Open
    J_Coast_Res_19_664.pdf (1.206Mb)
    Date
    2003
    Author
    Balachandran, K.K.
    Joseph, T.
    Nair, M.
    Sankaranarayanan, V.N.
    Das, V.K.
    Sheeba, P.
    Metadata
    Show full item record
    Abstract
    The coastal sediments (129 samples) of central- southwest coast of India, in and around Cochin, the second biggest industrial city along the west coast of India, were analyzed for their textural and geochemical fractions such as Fe, Co, Cr, Cu, Mn, Ni, Pb and Zn on a seasonal basis, which form a first report of this kind. Metal accumulation was found to be highest during the period just after the summer monsoon due to the flushing of previously deposited sediments from the Cochin backwaters; the weak coastal currents favoring deposition in the coastal environment. Cross-shelf transport was found to be insignificant during the other two seasons. The geochemical studies reveal two different processes regulating the regional distribution of trace elements in this environment; viz: (1) The increased monsoonal supply of materials through the Cochin backwaters causing increased metal deposition (2) Effective masking of these metals by incorporation into clay and organic association which follows immediately after the monsoon. As the season progresses, they are further impoverished in metals (normalized) through size segregation of marine sediments. The correlations between various sedimentary parameters are elucidated to interpret the coherence between metallic and carrier phases during each season. While organic associations for most of the metals with seasons are preferential, absence of any correlation for Zn and Mn with organic carbon and clay on all occasion is striking
    URI
    http://drs.nio.org/drs/handle/2264/1266
    Collections
    • Scholarly literature [9074]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV