Assessment of regional karstification degree and groundwater sensitivity to pollution using hydrograph analysis in the Velka Fatra Mountains, Slovakia |
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| Authors: | Peter Malik |
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| Institution: | (1) Geological Survey of Slovak Republic, Bratislava, Slovakia |
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| Abstract: | Hydrograph analyses of groundwater depletion process in the spring were used for estimation of karstification degree and groundwater
sensitivity to pollution in the whole catchment area. Differences of individual depletion hydrographs enable assessment of
the anticipated extent of absorption, attenuation and self-purification processes during the groundwater penetration through
the rock environment between its infiltration and its outflow in the spring. The method was applied in the SW part of the
Velka Fatra Mountains (Slovakia) “Tlsta” hydrogeological structure. In total, 209 individual recession curves from 20 gauged
springs were analyzed. Depending on characteristic groundwater depletion hydrographs with independent sub-regimes, categories
of groundwater sensitivity to pollution were defined. Finally, resulting sensitivities to pollution were linked to lithostratigraphical
units in the area. |
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| Keywords: | Groundwater Sensitivity to pollution Karstification degree Hydrograph analyses Slovakia |
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