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Understanding of groundwater salinity using statistical modeling in a small tropical island, East Malaysia

Author

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  • Sarva Mangala Praveena

    (Universiti Malaysia Sabah)

  • Mohd Harun Abdullah

    (Universiti Malaysia, Sabah)

  • Kawi Bidin

    (Universiti Malaysia Sabah)

  • Ahmad Zaharin Aris

    (Universiti Putra Malaysia)

Abstract

This paper presents an understanding of groundwater salinity by identification of effective factors using chemometric methods (cluster analysis and multiple linear regressions) in Manukan Island, Sabah. Local groundwater and environmental properties were used to explore the effective factors of groundwater salinity. Cluster analysis showed salinity and chloride illustrated the highest similarities. Electrical conductivity and total dissolved solids were also grouped in the same cluster. Seawater is the only chloride source in groundwater of Manukan Island demonstrated an indication of seawater mixing in freshwater. It is an effect of upward movement of the seawater by pumping activities. Precipitation and evapotranspiration (environmental condition) with hydraulic heads were clustered together to show that they also influence salinity concentration in groundwater. Multiple linear regressions showed descending order of the factors from chloride (the largest contribution) to evapotranspiration (the smallest contribution) and illustrated the contribution to groundwater salinity in Manukan Island. The integrated results using chemometric methods have provided a way to identify the effective factors on groundwater salinity. This similar approach and resulting equation can be applied in other small tropical islands with alike hydrogeological condition and limited information available for a better understanding of its groundwater salinity.

Suggested Citation

  • Sarva Mangala Praveena & Mohd Harun Abdullah & Kawi Bidin & Ahmad Zaharin Aris, 2011. "Understanding of groundwater salinity using statistical modeling in a small tropical island, East Malaysia," Environment Systems and Decisions, Springer, vol. 31(3), pages 279-287, September.
    • Handle: RePEc:spr:envsyd:v:31:y:2011:i:3:d:10.1007_s10669-011-9332-y
    DOI: 10.1007/s10669-011-9332-y
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    References listed on IDEAS

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    1. R. Rejani & Madan Jha & S. Panda & R. Mull, 2008. "Simulation Modeling for Efficient Groundwater Management in Balasore Coastal Basin, India," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 22(1), pages 23-50, January.
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    Cited by:

    1. Nura Umar Kura & Mohammad Firuz Ramli & Wan Nur Azmin Sulaiman & Shaharin Ibrahim & Ahmad Zaharin Aris & Adamu Mustapha, 2013. "Evaluation of Factors Influencing the Groundwater Chemistry in a Small Tropical Island of Malaysia," IJERPH, MDPI, vol. 10(5), pages 1-21, May.

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