Articles | Volume 13, issue 4
https://doi.org/10.5194/bg-13-1209-2016
https://doi.org/10.5194/bg-13-1209-2016
Research article
 | 
29 Feb 2016
Research article |  | 29 Feb 2016

Drivers of summer oxygen depletion in the central North Sea

Bastien Y. Queste, Liam Fernand, Timothy D. Jickells, Karen J. Heywood, and Andrew J. Hind

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Cited articles

Brown, J., Hill, A. E., Fernand, L., and Horsburgh, K. J.: Observations of a Seasonal Jet-like Circulation at the Central North Sea Cold Pool Margin, Estuar. Coast. Shelf S., 48, 343–355, https://doi.org/10.1006/ecss.1999.0426, 1999.
Burchard, H. and Rippeth, T. P.: Generation of Bulk Shear Spikes in Shallow Stratified Tidal Seas, J. Phys. Oceanogr., 39, 969–985, https://doi.org/10.1175/2008JPO4074.1, 2009.
Couceiro, F., Fones, G. R., Thompson, C. E. L., Statham, P. J., Sivyer, D. B., Parker, R., Kelly-Gerreyn, B. A., and Amos, C. L.: Impact of resuspension of cohesive sediments at the Oyster Grounds (North Sea) on nutrient exchange across the sediment-water interface, Biogeochemistry, 113, 37–52, https://doi.org/10.1007/s10533-012-9710-7, 2013.
de Jonge, V. N., Bakker, J. F., and Van Stralen, M.: Recent changes in the contributions of river Rhine and North Sea to the eutrophication of the western Dutch Wadden Sea, Netherlands Journal of Aquatic Ecology, 30, 27–39, https://doi.org/10.1007/BF02092145, 1996.
Diaz, R. J. and Rosenberg, R.: Spreading dead zones and consequences for marine ecosystems, Science, 321, 926–929, https://doi.org/10.1126/science.1156401, 2008.
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Short summary
In stratified shelf seas, physical and biological conditions can lead to seasonal oxygen depletion when consumption exceeds supply. An ocean glider obtained a high-resolution 3-day data set of biochemical and physical properties in the central North Sea. The data revealed very high oxygen consumption rates, far exceeding previously reported rates. A consumption–supply oxygen budget indicates a localized or short-lived resuspension event causing rapid remineralization of benthic organic matter.
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