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    Estimation of intrinsic aquifer vulnerability with index-overlay and statistical methods: the case of eastern Kopaida, central Greece

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    Type
    Article
    Authors
    Tziritis, E.
    Lombardo, Luigi
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2016-03-01
    Online Publication Date
    2016-03-01
    Print Publication Date
    2017-09
    Permanent link to this record
    http://hdl.handle.net/10754/600513
    
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    Abstract
    The intrinsic vulnerability of a karstic aquifer system in central Greece was jointly assessed with the use of a statistical approach and PI method, as a function of topography, protective cover effectiveness and the degree to which this cover is bypassed due to flow conditions. The input data for the index-overlay PI method were derived from field works and 71 boreholes of the area; the information was obtained, subsequently its critical factors were compiled which included lithology, fissuring and karstification of bedrock, soil characteristics, hydrology, hydrogeology, topography and vegetation. The aforementioned parameters were processed jointly with the aid of a GIS and yielded the final estimation of intrinsic aquifer vulnerability to contamination. Results were compared with an equivalent spatially distributed probability map obtained through a stochastic approach. The calibration and test phase of the latter relied on morphometric conditions derived by terrain analyses of a digital elevation model as well as on geology and land use from thematic maps. This procedure allowed taking into account the topographic influences with respect to a deep system such as the local karstic aquifer of eastern Kopaida basin. Finally, results were validated with ground truth nitrate values obtained from 41 groundwater samples, highlighted the spatial delineation of susceptible areas to contamination in both cases and provided a robust tool for regional planning actions and water resources management schemes.
    Citation
    Estimation of intrinsic aquifer vulnerability with index-overlay and statistical methods: the case of eastern Kopaida, central Greece 2016 Applied Water Science
    Publisher
    Springer Nature
    Journal
    Applied Water Science
    DOI
    10.1007/s13201-016-0397-0
    Additional Links
    http://link.springer.com/10.1007/s13201-016-0397-0
    ae974a485f413a2113503eed53cd6c53
    10.1007/s13201-016-0397-0
    Scopus Count
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    Articles; Physical Science and Engineering (PSE) Division

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