Multi-scale Assessment of Hydrodynamic Properties in a Karst Aquifer (Lez, France)

A. Dausse (1) , H. Jourde (1) , Véronique Léonardi (1)

1 HSM - Hydrosciences Montpellier

The present study focuses on the hydrodynamic characterization of the Lez karst aquifer (Southern France) on the basis of hydraulic field tests performed at different scales of space and under distinct hydrological conditions. Depending on the water level conditions, the organization of the flow paths linked to the geological structure of the reservoir changes and a compartmentalization of the system due the hierarchization of hydraulic connections to the main flow paths was assessed. For the same parameter characterized at borehole scale and at regional scale, a difference of 10\textendash105 has been quantified. This quantification of hydrodynamic parameters provides important constraints on multiscale modeling and the characterization of main flow paths in such a karst system.

Mots clés: Hydrodynamic Property; Injection Test; Karst Aquifer; Karst Conduit; Slug Test

Domaines: Hydrologie

A. Dausse, H. Jourde, Véronique Léonardi. Multi-scale Assessment of Hydrodynamic Properties in a Karst Aquifer (Lez, France). Andreo; Bartolomé and Carrasco; Francisco and Durán; Juan José and Jiménez; Pablo and LaMoreaux; James W. Hydrogeological and Environmental Investigations in Karst Systems, Springer Berlin Heidelberg, pp.331--338, 2015, Environmental Earth Sciences, 978-3-642-17435-3. ⟨10.1007/978-3-642-17435-3_37⟩. ⟨hal-02053382⟩