Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 30, issue 17
Articles | Volume 30, issue 17
https://doi.org/10.5194/hess-30-5685-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-5685-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 30, issue 17
Research article
 | 
08 Sep 2026
Research article |  | 08 Sep 2026

Spectral analysis of groundwater level time series for robust estimation of aquifer response times

Timo Houben, Christian Siebert, Thomas Kalbacher, Mariaines Di Dato, Thomas Fischer, and Sabine Attinger

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Short summary

Groundwater is vital but increasingly stressed by climate change and rising water demand. This study estimates how quickly aquifers respond to changes in recharge using a signal-analysis method. Most aquifers reacted within one to ten months, while deeper responded more slowly and proved more resilient to short droughts. The method uses existing monitoring data, offering a practical way to identify vulnerable aquifers and guide groundwater management under climate change.

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