ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2018, Vol. 15, No. 4, pp. 214-221

Formation and propagation of an eddy dipole at Cape Taran in the southeast Baltic Sea

E.V. Krayushkin 1 , O.Yu. Lavrova 1 , K.R. Nazirova 1 , Ya. O. Alferyeva 2 , D.M. Soloviev 3 
1 Space Research Institute RAS, Moscow, Russia
2 Lomonosov Moscow State University, Moscow, Russia
3 Marine Hydrophysical Institute RAS, Sevastopol, Russia
Accepted: 17.08.2018
DOI: 10.21046/2070-7401-2018-15-4-214-221
The results of satellite observation of the formation and propagation of an eddy dipole at Cape Taran (southeast Baltic Sea) on 7–9 August 2018 are presented. The formation of the dipole was induced by a sharp change in wind conditions. High water turbidity in the coastal zone enabled distinct manifestation of the dipole in visible satellite images and especially in total suspended matter maps derived from satellite data. The dynamics of the dipole was retrieved from analysis of Sentinel-3 OLCI, Sentinel-2 MSI and Terra/Aqua MODIS satellite images. Concurrently with satellite remote sensing, an oceanographic field study was conducted in the same region, featuring ADCP surveys along standard transects near Cape Taran and launch of Lagrangian drifters to determine the structure of local currents. The edge of highly turbid waters was determined using an CTD probe equipped with a turbidity meter. Joint analysis of the satellite data and in situ observations made it possible to evaluate spatial and dynamic parameters of different parts of the dipole. Over the three days, the eddy dipole underwent a strong transformation and traveled from Cape Taran to the middle of the Curonian Spit, a distance of about 63 km.
Keywords: eddy dipole, current around cape, total suspended matter, satellite observation, Sentinel-3 OLCI, Sentinel-2 MSI, Terra/Aqua MODIS, Lagrangian drifter, southeast Baltic Sea
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