Estimating epikarst water storage by time-lapse surface-to-depth gravity measurements - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Hydrology and Earth System Sciences Année : 2018

Estimating epikarst water storage by time-lapse surface-to-depth gravity measurements

Cédric Champollion
Sabrina Deville
  • Fonction : Auteur
  • PersonId : 937493
Erik Doerflinger
  • Fonction : Auteur
  • PersonId : 933258
Roger Bayer
  • Fonction : Auteur
  • PersonId : 862879
Philippe Vernant

Résumé

The magnitude of epikarstic water storage variation is evaluated in various karst settings using a relative spring gravimeter. Gravity measurements are performed over a 1.5-year period at the surface and inside caves at different depths on three karst hydro-systems in southern France: two limestone karst systems and one dolomite karst system. We find that significant water storage variations occur in the first 10 m of karst unsaturated zone. The subsurface water storage is also evidenced by complementary magnetic resonance sounding. The comparison between sites of the depth gravity measurements with respect to net water inflow suggests that seasonal water storage depends on the lithology. The transmissive function of the epikarst on the seasonal scale has been deduced from the water storage change estimation. Long (> 6 months) and short (< 6 months) transfer times are revealed in the dolomite and in the limestone respectively.
Fichier principal
Vignette du fichier
hess-22-3825-2018.pdf (3.88 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01843998 , version 1 (20-09-2018)

Licence

Paternité

Identifiants

Citer

Cédric Champollion, Sabrina Deville, Jean Chery, Erik Doerflinger, Nicolas Le Moigne, et al.. Estimating epikarst water storage by time-lapse surface-to-depth gravity measurements. Hydrology and Earth System Sciences, 2018, 22 (7), pp.3825-3839. ⟨10.5194/hess-22-3825-2018⟩. ⟨hal-01843998⟩
203 Consultations
88 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More