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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, 2021, Vol. 18, No. 3, pp. 269-276

Characteristics of short-period internal waves in the Bering Sea in summer 2019 from Sentinel-1 data

E.I. Svergun 1, 2 , I.E. Kozlov 3, 4 
1 Shirshov Institute of Oceanology RAS, Moscow, Russia
2 Saint Petersburg State University, Saint Petersburg, Russia
3 Marine Hydrophysical Institute RAS, Sevastopol, Russia
4 Russian State Hydrometeorological University, Saint Petersburg, Russia
Accepted: 16.06.2021
DOI: 10.21046/2070-7401-2021-18-3-269-276
Here we consider spatio-temporal variability of short-period internal waves (SIWs) characteristics in the Bering Sea from the analysis of spaceborne Sentinel-1 synthetic aperture radar (SAR) images acquired in July – September 2019. Analysis of 567 SAR images enabled to identify 475 distinct SIWs signatures. Many of these wave trains were registered near the shelf break and in the vicinity of continental slope. A predominant SIWs propagation direction coincides with the direction of the tidal flux energy. Regions of the most frequent occurrence of SIWs are found in the Olyutorsky Bay, south of Litke Strait, near Cape Navarin and Pribilof Islands, as well as near Fox Islands and Andreanof Islands. In these regions, SIWs with leading front length of 50 km and inter-soliton width of 1000 m were registered. Maximal values of SIW properties were observed on the eastern shelf characterized by maximum values of tidal baroclinic energy dissipation.
Keywords: short-period internal waves, surface manifestations, satellite radar images, hot spots of internal wave generation, Bering Sea
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