Articles | Volume 22, issue 8
Hydrol. Earth Syst. Sci., 22, 4267–4279, 2018
https://doi.org/10.5194/hess-22-4267-2018
Hydrol. Earth Syst. Sci., 22, 4267–4279, 2018
https://doi.org/10.5194/hess-22-4267-2018

Research article 13 Aug 2018

Research article | 13 Aug 2018

High-frequency NO3 isotope (δ15N, δ18O) patterns in groundwater recharge reveal that short-term changes in land use and precipitation influence nitrate contamination trends

Martin Suchy et al.

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Latest update: 05 Dec 2021
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Short summary
Groundwater contamination by nitrate is a global problem. Understanding sources and transformations of nitrate in aquifers is key to inform remediation, and isotopes of nitrate (15N, 18O) are used for this. Most isotopic investigations are synoptic studies. Here we show that high-frequency nitrate isotope sampling of aquifer recharge better reveals the impact of short-term changes in land use practice or climatic conditions that need to be taken into account when considering long-term trends.