Anticyclonic eddies in the northwestern Black Sea
In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963; e-ISSN 1879-1573, more
Also appears in:Frankignoulle, M. (Ed.) (2002). Exchange Processes at the Ocean Margins. Selected papers from the 32nd International Liège Colloquium on Ocean Hydrodynamics, held in Liège, Belgium on May 8-12, 2000. Journal of Marine Systems, 32(1-3). Elsevier: Amsterdam. ex1-ex2, 252 pp., more
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| Keywords |
Motion > Water motion > Circulation > Water circulation > Ocean circulation > Oceanic eddies > Current rings
Organic compounds > Carbohydrates > Glycosides > Pigments > Photosynthetic pigments > Chlorophylls
Remote sensing
Surfaces > Sea surface
Water exchange
MED, Black Sea [Marine Regions]
Marine/Coastal |
| Authors | | Top |
- Ginzburg, A.I.
- Kostianoy, A., more
- Nezlin, N.P.
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- Soloviev, D.M.
- Stanichny, S.V.
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| Abstract |
National Oceanic and Atmospheric Administration (NOAA) Advanced Very-High Resolution Radiometer (AVHRR) imagery (1993, 1998), along with attendant daily meteorological information from seaports and available hydrographic information from different years, was used to investigate the structure and evolution of mesoscale anticyclonic eddies in the northwestern Black Sea, and their role in shelf/deep basin water exchange. In the summer of 1993, two anticyclonic eddies with diameters of 90 and 55 km coexisted without coalescence for 1.5 months over a wide and relatively gentle part of the northwestern continental slope. The directions of the eddies' movements inside this zone (speed of movement up to 16 cm/s) were likely determined by the interaction between eddies themselves, and by the Rim Current meandering and forcing. For June-August of 1998, three such eddies have been traced in the sea surface temperature (SST, AVHRR) and chlorophyll alpha (SeaWiFS) fields. The largest anticyclone with a diameter of 90 km moved during 3 months southwestward from the wide slope region west of Sevastopol to the area of narrower slope southeast of Cape Kaliakra with a mean speed of about 3 cm/s. Together with nonstationary associated elements (cyclones at the eddies' peripheries, entrained and ejected jets), anticyclonic eddies determine water exchange processes in a large area of the western Black Sea between 43-45° N and 29-33° E. They transport chlorophyll-rich coastal waters to the deep basin, westerly winds being favorable to the process. |
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