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Proceedings Paper

Internal waves in the Black Sea: satellite observations and in-situ measurements
Author(s): Olga Yu. Lavrova; Marina I. Mityagina; Andrey N. Serebryany; Konstantin D. Sabinin; Nina A Kalashnikova; Evgeny V. Krayushkin; Ielizaveta Khymchenko
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Paper Abstract

Satellite radar (SAR) and visible band data from Envisat ASAR, ERS-2 SAR, Lansat-5,7,8 sensors were used to investigate internal waves (IWs) in the Black Sea. The three main areas of the Black Sea where surface manifestations of internal waves (SMIWs) were mostly observed are: the Danube Delta, Crimea Peninsula and the northeastern region near Novorossiysk. The main goal of our investigation was to define the mechanisms of IW generation in the non-tidal sea. In the first area, IWs are observed rather often due to surface intrusions of fresh waters of the Danube River. In contrast to usual soliton-like IW trains caused by river plumes, soliton trains near the Danuba Delta propagate in different directions and often subject to nonlinear interactions. The interrelation between location and orientation of IW trains and fresh water fronts is discussed. In the area off Crimea, in our opinion, IWs are generated mainly by upwelling relaxation and interaction between internal inertial waves and bottom topography features. SMIW in the northeastern part of the Black Sea are scarce, though IWs are regularly revealed by in-situ measurements. Field measurements were conducted in the northeastern part of the Black Sea from a small boat and from scientific sea platform near Crimea employing CTD probes, thermistor chain and Acoustic Doppler Current Profilers (ADCP). ADCP measurements allowed us to detect a number of IW trains. Their amplitudes were estimated to reach 5-8 m. Joint analysis of satellite SAR and subsatellite data gave an assessment of their typical wavelength at 90-100 m.

Paper Details

Date Published: 14 October 2014
PDF: 13 pages
Proc. SPIE 9240, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2014, 924016 (14 October 2014); doi: 10.1117/12.2067047
Show Author Affiliations
Olga Yu. Lavrova, Space Research Institute (Russian Federation)
Marina I. Mityagina, Space Research Institute (Russian Federation)
Andrey N. Serebryany, Space Research Institute (Russian Federation)
N.N. Andreyev Acoustics Institute (Russian Federation)
Konstantin D. Sabinin, Space Research Institute (Russian Federation)
N.N. Andreyev Acoustics Institute (Russian Federation)
Nina A Kalashnikova, Space Research Institute (Russian Federation)
Evgeny V. Krayushkin, Space Research Institute (Russian Federation)
M.V. Lomonosov Moscow State Univ. (Russian Federation)
Ielizaveta Khymchenko, P.P. Shirshov Institute of Oceanology (Russian Federation)


Published in SPIE Proceedings Vol. 9240:
Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2014
Charles R. Bostater; Stelios P. Mertikas; Xavier Neyt, Editor(s)

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