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Springer Proceedings in Earth and Environmental Sciences

ISSN:2524342

2023

10.1007/978-3-031-47851-2_54

IYZOSM

The influence of mesoscale eddies of different signs on the seasonal variability and vertical distribution of dissolved oxygen in the Black Sea was investigated based on the method of eddy identification by altimetric measurements and a long-term array of hydrochemical measurements. It has been shown that in z-coordinates, at the depths of the oxycline, the maximum growth is observed in anticyclonic eddies (AE) during the summer season and a decrease in cyclonic eddies (CE). In the upper layers, the situation is opposite, with a decrease in AE and an increase in CE, especially pronounced during the period of spring phytoplankton bloom and associated with the influence of eddies on bioproductivity. At the same time, in isopycnic coordinates, eddies of both signs cause unidirectional changes: a significant increase in oxygen anomaly in the oxycline and a decrease in the sub-oxygen zone, apparently caused by an intensification of shear turbulence mixing in eddy formations. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.

Bio-Argo, Black Sea, mesoscale eddies, oxygen, seasonal variability

2024-02-05 15:55:05