Artificial tracer Tests interpretation using transfer function approach to study the Norville karst system

Vianney Sivelle (1, 2) , David Labat (1, 2) , Léa Duran (3, 2) , Matthieu Fournier (3, 2) , Nicolas Massei (3, 2)

1 GET - Géosciences Environnement Toulouse
2 SNO Karst - Service National d'Observation sur le KARST
3 M2C - Morphodynamique Continentale et Côtière

Karstic aquifers are known for their high degree of nonlinearity and non-stationarity in their hydrodynamic behaviour. We used a transfer function approach (TFA) to interpret artificial tracer tests in Norville karst system (Normandy, France). The system’s behaviour is modelled as a conceptual reservoir with an assumed transfer function containing an ‘intrinsic’ part and a ‘boundary conditions dependent’ part. Additionally, a relationship between spring discharge and residence time distribution characteristics can be formulated. This constitutes new perspectives for testing pollution scenarios.

Mots clés: Karstic system; Artificial tracer test; Transfer function

Domaines: Hydrologie

Vianney Sivelle, David Labat, Léa Duran, Matthieu Fournier, Nicolas Massei. Artificial tracer Tests interpretation using transfer function approach to study the Norville karst system. Eurokarst 2018, Besançon: Advances in the Hydrogeology of Karst and Carbonate Reservoirs, pp.193-198, 2020, ⟨10.1007/978-3-030-14015-1_22⟩. ⟨hal-02406848⟩