Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Structure and hydrogeochemical functioning of a sparkling natural mineral water system from a multidisciplinary approach: a case study from southern France

Abstract : Natural mineral waters (NMW), often used to produce bottled water, are of high socio-economic interest and need appropriate management to ensure the sustainability of the resource. A complex sparkling NMW system at La Salvetat, southern France, was investigated using a multidisciplinary approach. Geological and geophysical investigations, pumping test analyses, time-series signal processing, hydrogeochemical and isotopic data (both stable and radiogenic), and numerical modelling provided complementary information on the geometry, hydrodynamic characteristics and functioning of this mineral system. The conceptual model consists of a compartmentalized reservoir characterized by two subvertical, parallel deeply-rooted hydraulically independent permeable structures that are fed by deep CO2-rich crustal fluids. The non-mineralized shallow aquifer system corresponds to a fissured layer within the weathered zone that is recharged by leakage from the overlying saprolite. This surficial aquifer responds rapidly to recharge (40 - 80 days), whereas the deep system's response to recharge is much longer (up to 120 days). This research demonstrates the need for multidisciplinary approaches and modelling (quantity, hydrochemistry) for understanding complex NMW systems. This knowledge is already being applied by the bottling company that manages the resource at La Salvetat, and would be useful for conceptualizing other NMW sites.
Liste complète des métadonnées

Littérature citée [30 références]  Voir  Masquer  Télécharger

https://hal-brgm.archives-ouvertes.fr/hal-00944206
Contributeur : Jean-Christophe Maréchal <>
Soumis le : lundi 10 février 2014 - 12:29:46
Dernière modification le : jeudi 23 avril 2020 - 12:00:04
Archivage à long terme le : : lundi 12 mai 2014 - 12:55:49

Fichiers

HJ-2014.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Jean-Christophe Maréchal, Patrick Lachassagne, Bernard Ladouche, Benoît Dewandel, Sandra Lanini, et al.. Structure and hydrogeochemical functioning of a sparkling natural mineral water system from a multidisciplinary approach: a case study from southern France. Hydrogeology Journal, Springer Verlag, 2014, 22 (1), pp.47-68. ⟨10.1007/s10040-013-1073-1⟩. ⟨hal-00944206⟩

Partager

Métriques

Consultations de la notice

612

Téléchargements de fichiers

484