engleski

Hydrogeochemical model of the heterogeneous aquifer system: the case of Zagreb, Croatia

The hydrogeochemical homogenous areas were determined by multivariate statistical analyses and geochemical modeling tools. Multivariate analysis of variance (MANOVA) was used to test the differences between the macrochemical composition of the groundwater in shallow and deeper aquifers. The results support the stratigraphic evidence that it is possible to differentiate a shallow Holocene alluvial aquifer from deeper Middle/Upper Pleistocene lacustrine-marsh aquifers. Multivariate statistical analysis, Cluster analysis, revealed the significant differences in groundwater macrochemical composition in different parts of the shallow aquifer. Geochemical modeling tools revealed the areas of carbonate dilution and precipitation. All the results highlight specific hydrogeochemical areas, expected to react similarly or identically to natural or man-caused events.

hydrogeochemistry; homogeneous areas; multivariate statistics

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