Articles | Volume 26, issue 22
https://doi.org/10.5194/hess-26-5697-2022
https://doi.org/10.5194/hess-26-5697-2022
Research article
 | 
14 Nov 2022
Research article |  | 14 Nov 2022

Frequency domain water table fluctuations reveal impacts of intense rainfall and vadose zone thickness on groundwater recharge

Luca Guillaumot, Laurent Longuevergne, Jean Marçais, Nicolas Lavenant, and Olivier Bour

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Latest update: 02 Mar 2024
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Short summary
Recharge, defining the renewal rate of groundwater resources, is difficult to estimate at basin scale. Here, recharge variations are inferred from water table variations recorded in boreholes. First, results show that aquifer-scale properties controlling these variations can be inferred from boreholes. Second, groundwater is recharged by both intense and seasonal rainfall. Third, the short-term contribution appears overestimated in recharge models and depends on the unsaturated zone thickness.