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Generation sites of nonlinear internal waves in the Barents, Kara and White seas from spaceborne SAR observations

I.E. Kozlov¹ , V.N. Kudryavtsev¹ , E.V. Zubkova¹ , O.A. Atadjanova¹ , A.V. Zimin² , D.A. Romanenkov² , B. Chapron^1,3 , A.G. Myasoedov¹

¹ Russian State Hydrometeorological University, Saint-Petersburg, Russia
² P.P. Shirshov Institute of Oceanology RAS, Saint-Petersburg Branch, Saint-Petersburg, Russia
³ Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Brest, France

In this paper we present first results of short-period internal wave (IW) observations in the Barents, Kara and White seas based on satellite ENVISAT ASAR data for summer-autumn months in 2007-2011. Altogether 2107 IW packets were identified in 1354 SAR images. Detailed maps of IWs observational frequency in SAR images of three Arctic seas helped to identify main IWs generation and propagation sites. We also point out the regions where large-scale IW packets are periodically observed, and provide estimates of their spatial characteristics.

Keywords: short-period internal waves, generation sites, SAR imaging, Barents Sea, Kara Sea, White Sea

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