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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2018, Vol. 15, No. 1, pp. 309-315

Internal waves observed in satellite images of the northeastern Black Sea in July 2017

O.Yu. Lavrova 1 
1 Space Research Institute RAS, Moscow, Russia
Accepted: 20.02.2018
DOI: 10.21046/2070-7401-2018-15-1-309-315
In July 2017, an unusually large number of internal waves was observed in the northeastern part of the Black Sea along the Kerch Strait — the city of Tuapse coastline. The comparison was made with the same month of 2005–2016. The phenomenon was most probably associated with the formation of a sharp and shallow pycnocline by the end of June as the result of fast warming after a rather long period of cool weather in the beginning of the summer. The density gradient of such type is known to facilitate manifestation of internal waves at the sea surface. Satellite data of Sentinel-1 SAR-C, Sentinel-2A MSI and Landsat-8 OLI instruments were examined. Spatial parameters of the observed trains of internal waves were estimated. The propagation velocities of the leading waves in the trains were determined from Sentinel-2A MSI and Landsat-8 OLI visible images obtained 13 July, 2017, with time difference of 17 min. Today, it has become possible to retrieve not only spatial, but also dynamic characteristics of internal waves from satellite data due to high resolution of the available data and frequent surveys of the same area.
Keywords: internal waves, radar images, visible satellite data, Sentinel-1 SAR-C, Sentinel-2A MSI, Landsat-8 OLI, Black Sea
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