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    Statistical analysis of the hydrogeochemical evolution of groundwater in hard and sedimentary aquifers system of Gadilam River Basin, South India

    152232_152232.pdf (913.0Kb)
    Access Status
    Open access
    Authors
    Prasanna, Mohan Viswanathan
    Chidambaram, S.
    Srinivasamoorthy, K.
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    Prasanna, M.V. and Chidambaram, S. and Srinivasamoorthy, K. 2010. Statistical analysis of the hydrogeochemical evolution of groundwater in hard and sedimentary aquifers system of Gadilam River Basin, South India. Journal of King Saud University (Science). 22 (3): pp. 133-145.
    Source Title
    Journal of King Saud University (Science)
    DOI
    10.1016/j.jksus.2010.04.001
    ISSN
    1018-3647
    School
    Curtin Sarawak - Faculty Office
    Remarks

    NOTICE: this is the author’s version of a work that was accepted forpublication in Journal of King Saud University (Science). Changesresulting from the publishing process, such as peer review, editing,corrections, structural formatting, and other quality controlmechanisms may not be reflected in this document. Changes mayhave been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of King Saud University (Science), 22,3 (2010)

    URI
    http://hdl.handle.net/20.500.11937/14489
    Collection
    • Curtin Research Publications
    Abstract

    The study of groundwater hydrogeochemistry of hard and sedimentary aquifers system in Gadilam river basin has resulted in a large number of geochemical dataset. Groundwater samples were collected at 41 sites over spread of 1380 km2 study area and analysed for major ions. The large number of data can lead to difficulties in the integration, interpretation and representation of the results. Application of statistical analysis of the data helps us to unravel the hidden relationship between ions. Correlation analyses and factor analyses were applied to classify the groundwater samples, and to identify geochemical processes controlling groundwater geochemistry. The correlation analysis helps in the determination of the spinal and the seasonal species (ions). Calcium (Ca2+), Magnesium (Mg2+), Sodium (Na+), Chloride (Cl), Bicarbonate HCO3 and Sulphate SO24 were determined as spinal species and Potassium (K+), Phosphate PO4 and Silica (H4SiO4) as the seasonal species. Factor analysis shows that dissolution and leaching of secondary salts, weathering and anthropogenic impacts are the dominant controlling factors in the study area. Though several factors were extracted for different seasons to identify the dominant hydrogeochemical regime of the study area, first three dominant factors were spatially distributed by their factor scores. This spatial representation of the factor scores show that part of the region is hydrogeochemically active.

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