Articles | Volume 26, issue 11
https://doi.org/10.5194/hess-26-2829-2022
https://doi.org/10.5194/hess-26-2829-2022
Research article
 | 
08 Jun 2022
Research article |  | 08 Jun 2022

Influence of low-frequency variability on high and low groundwater levels: example of aquifers in the Paris Basin

Lisa Baulon, Nicolas Massei, Delphine Allier, Matthieu Fournier, and Hélène Bessiere

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Latest update: 17 Jun 2024
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Short summary
Aquifers often act as low-pass filters, dampening high-frequency (intra-annual) and amplifying low-frequency (LFV, multi-annual to multidecadal) variabilities originating from climate variability. By processing groundwater level signals, we show the key role of LFV in the occurrence of groundwater extremes (GWEs). Results highlight how changes in LFV may impact future GWEs as well as the importance of correct representation of LFV in general circulation model outputs for GWE projection.