Sensitivity analysis for the EPIK vulnerability assessment in a local karstic aquifer
English
Gogu, Radu Constantin[Université de Liège - ULg > Géologie Appliquée > Laboratoires de Géologie de l'Ingénieur, d'Hydrogéologie et de Prospection Géophysique > >]
Dassargues, Alain[Université de Liège - ULg > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement >]
[en] Applying the EPIK parametric method, a vulnerability assessment has been made for a small karstic groundwater system in southern Belgium. The aquifer is a karstified limestone of Devonian age. A map of intrinsic vulnerability of the aquifer and of the local water-supply system shows three vulnerability areas. A parameter-balance study and a sensitivity analysis were performed to evaluate the influence of single parameters on aquifer-vulnerability assessment using the EPIK method. This approach provides a methodology for the evaluation of vulnerability mapping and for more reliable interpretation of vulnerability indices for karst groundwater resources.