Chemistry-transport coupled modelling of the Äspö groundwater system (Sweden) since the last glaciation.

Wolfram Kloppmann (1) , Dominique Thiéry (1) , Christophe Kervévan (1) , Anne Bourguignon (1) , Philippe Négrel (1) , Joël Casanova (1)

1 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)

Based on the specific coupled modeling approach developed at BRGM, a reaction-transport model of the Äspö groundwater system (Sweden) has been developed; it simulates a continuous scenario from 12.000 BP to the natural modern situation. Examples of the results (evolution of Na, 18O, calcite) are presented. Na, Ca, Cl and stable isotopes are mainly related to mixing between the different mixing end members subsequently entering the system (glacial melt water, Baltic Sea stages, meteoric water), calcite contents, pH and silica are determined by water rock interaction.

Mots clés: Écoulement avec interactions géochimiques; Granite; Ile d'Aspö (Suède); Modèle MARTHE

Domaines: Hydrologie; Milieux et Changements globaux

Wolfram Kloppmann, Dominique Thiéry, Christophe Kervévan, Anne Bourguignon, Philippe Négrel, et al.. Chemistry-transport coupled modelling of the Äspö groundwater system (Sweden) since the last glaciation.. Water-Rock Interaction 10th, 2001, Sep 2001, Cagliari, Italy. pp. 181-184. ⟨hal-01061960⟩