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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 13, issue 20
Biogeosciences, 13, 5865-5881, 2016
https://doi.org/10.5194/bg-13-5865-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Hydrography, biogeochemistry, and biology of "dead-zone eddies"...

Biogeosciences, 13, 5865-5881, 2016
https://doi.org/10.5194/bg-13-5865-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 28 Oct 2016

Research article | 28 Oct 2016

Characterization of “dead-zone” eddies in the eastern tropical North Atlantic

Florian Schütte et al.
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Mesoscale eddies with very low–oxygen concentrations at shallow depth have been recently discovered in the eastern tropical North Atlantic. Our analysis shows that low oxygen eddies occur more frequent than expected and are found even close to the equator (8° N). From budget calculations we show that an oxygen reduction of 7 µmol/kg in the depth range of 50–150 m in the eastern tropical North Atlantic (peak reduction is 16 µmol/kg at 100 m depth) can be associated with the dispersion of these eddies.
Mesoscale eddies with very low–oxygen concentrations at shallow depth have been recently...
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