Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Alkalinity Generation in the Coastal Area, the Case of the Wadden Sea

Version 1 : Received: 29 January 2021 / Approved: 1 February 2021 / Online: 1 February 2021 (13:52:55 CET)

How to cite: Yakubov, S.; Protsenko, E. Alkalinity Generation in the Coastal Area, the Case of the Wadden Sea. Preprints 2021, 2021020036 (doi: 10.20944/preprints202102.0036.v1). Yakubov, S.; Protsenko, E. Alkalinity Generation in the Coastal Area, the Case of the Wadden Sea. Preprints 2021, 2021020036 (doi: 10.20944/preprints202102.0036.v1).

Abstract

High alkalinity values on the seaside can influence the exchange of carbon dioxide between seawater and the atmosphere. Still, there are many uncertainties about biogeochemical processes responsible for alkalinity generation in the coastal area. One example of coastal areas with high alkalinity is the German Bight. The German Bight is the south-east part of the North Sea. The literature suggests that high summer alkalinity values in the German Bight result from the exchange of the German Bight with the Wadden Sea (an intertidal zone along Dutch, German, and Danish coasts). We show that the origin of high alkalinity values in the German Bight can be sulfate reduction in sediments of the Wadden Sea and that it can increase alkalinity from March to August up to approximately 220 micromoles per liter. Also, we show that sulfate reduction does not cause any significant year alkalinity flux from the Wadden Sea to the German Bight; instead, nitrogen compounds ( and ) are responsible for it and cause an alkalinity flux about 13 GM a year from the Wadden Sea to the German Bight.

Supplementary and Associated Material

Subject Areas

alkalinity; carbon; coast; Wadden Sea; German Bight

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