Files
Download Full Text (3.9 MB)
Publication Date
7-18-2018
Publication Title
Hydrology and Earth System Sciences
Volume Number
22
Issue Number
7
Abstract
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.
Document Type
Article
Digital Object Identifier (DOI)
https://doi.org/10.5194/hess-22-3825-2018
Language
English
Recommended Citation
Champollion, Cédric; Deville, Sabrina; Chéry, Jean; Doerflinger, Erik; Le Moigne, Nicolas; Bayer, Roger; Vernant, Philippe; and Mazzilli, Naomi, "Estimating epikarst water storage by time-lapse surface-to-depth gravity measurements" (2018). KIP Articles. 10726.
https://digitalcommons.usf.edu/kip_articles/10726
