Articles | Volume 26, issue 22
Hydrol. Earth Syst. Sci., 26, 5757–5771, 2022
https://doi.org/10.5194/hess-26-5757-2022
Hydrol. Earth Syst. Sci., 26, 5757–5771, 2022
https://doi.org/10.5194/hess-26-5757-2022
Research article
15 Nov 2022
Research article | 15 Nov 2022

Influence of intensive agriculture and geological heterogeneity on the recharge of an arid aquifer system (Saq–Ram, Arabian Peninsula) inferred from GRACE data

Pierre Seraphin et al.

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Short summary
This study assesses the detailed water budget of the Saq–Ram Aquifer System using satellite gravity data. Spatial heterogeneities regarding the groundwater recharge were identified: (i) irrigation excess is great enough to artificially recharge the aquifer; and (ii) volcanic lava deposits, which cover 8% of the domain, contribute to more than 50% of the total natural recharge. This indicates a major control of geological context on arid aquifer recharge, which has been poorly discussed hitherto.