Mesoscale circulation along the Sakhalin Island eastern coast

The seasonal and interannual variability of mesoscale circulation along the eastern coast of the Sakhalin Island in the Okhotsk Sea is investigated using the AVISO velocity field and oceanographic data for the period from 1993 to 2016. It is found that mesoscale cyclones with the horizontal dimensio...

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Bibliographic Details
Published in:Ocean dynamics 2017-04, Vol.67 (3-4), p.345-356
Main Authors: Prants, Sergey V., Andreev, Andrey G., Uleysky, Michael Yu, Budyansky, Maxim V.
Format: Article
Language:English
Subjects:
Atmospheric Sciences
Coasts
Earth and Environmental Science
Earth Sciences
Fluid- and Aerodynamics
Geophysics/Geodesy
Marine
Monitoring/Environmental Analysis
Ocean currents
Oceanography
Seasons
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Summary:The seasonal and interannual variability of mesoscale circulation along the eastern coast of the Sakhalin Island in the Okhotsk Sea is investigated using the AVISO velocity field and oceanographic data for the period from 1993 to 2016. It is found that mesoscale cyclones with the horizontal dimension of about 100 km occur there predominantly during summer, whereas anticyclones occur predominantly during fall and winter. The cyclones are generated due to a coastal upwelling forced by northward winds and the positive wind stress curl along the Sakhalin coast. The anticyclones are formed due to an inflow of low-salinity Amur River waters from the Sakhalin Gulf intensified by southward winds and the negative wind stress curl in the cold season. The mesoscale cyclones support the high biological productivity at the eastern Sakhalin shelf in July– August.
ISSN:1616-7341
1616-7228
DOI:10.1007/s10236-017-1031-x