Articles | Volume 20, issue 5
https://doi.org/10.5194/os-20-1423-2024
https://doi.org/10.5194/os-20-1423-2024
Research article
 | 
30 Oct 2024
Research article |  | 30 Oct 2024

Alkalinity sources in the Dutch Wadden Sea

Mona Norbisrath, Justus E. E. van Beusekom, and Helmuth Thomas

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Short summary
We present an observational study investigating total alkalinity (TA) in the Dutch Wadden Sea. Discrete water samples were used to identify the TA spatial distribution patterns and locate and shed light on TA sources. By observing a tidal cycle, the sediments and pore water exchange were identified as local TA sources. We assumed metabolically driven CaCO3 dissolution as the TA source in the upper, oxic sediments and anaerobic metabolic processes as TA sources in the deeper, anoxic ones.