Articles | Volume 14, issue 8
https://doi.org/10.5194/bg-14-2167-2017
https://doi.org/10.5194/bg-14-2167-2017
Research article
 | 
27 Apr 2017
Research article |  | 27 Apr 2017

Upwelling and isolation in oxygen-depleted anticyclonic modewater eddies and implications for nitrate cycling

Johannes Karstensen, Florian Schütte, Alice Pietri, Gerd Krahmann, Björn Fiedler, Damian Grundle, Helena Hauss, Arne Körtzinger, Carolin R. Löscher, Pierre Testor, Nuno Vieira, and Martin Visbeck

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Short summary
High-resolution observational data from underwater gliders and ships are used to investigate drivers and pathways of nutrient upwelling in high-productive whirling ecosystems (eddies). The data suggest that the upwelling is created by the interaction of wind-induced internal waves with the local rotation of the eddy. Because of differences in nutrient and oxygen pathways, a low-oxygen core is established at shallow depth in the high-productive eddies.
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