Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 46513 10.2205/2020ES000711 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Tidal internal waves in the Bransfield Strait, Antarctica Tidal internal waves in the Bransfield Strait, Antarctica Khimchenko E E Khimchenko E E ekhym@ocean.ru Frey D I Frey D I Morozov E G Morozov E G Shirshov Institute of Oceanology RAS ru Shirshov Institute of Oceanology RAS ru Shirshov Institute of Oceanology RAS ru Shirshov Institute of Oceanology RAS ru Shirshov Institute of Oceanology RAS ru Shirshov Institute of Oceanology RAS ru 20 2 1 6 29 10 2021 https://ras.editorum.ru/en/nauka/article/46513/view

Observations of tidal internal waves in the Bransfield Strait, Antarctica, are analyzed. The measurements were carried out for 14 days on a moored station equipped with five autonomous temperature and pressure sensors. Vertical displacements of temperature revealed that strong internal vertical oscillations up to 30-40 m are caused by the diurnal internal tide. The waves are forced due to the interaction of the barotropic tide with the bottom topography. The velocity ellipses of the barotropic tidal currents were estimated using the global tidal model.

Observations of tidal internal waves in the Bransfield Strait, Antarctica, are analyzed. The measurements were carried out for 14 days on a moored station equipped with five autonomous temperature and pressure sensors. Vertical displacements of temperature revealed that strong internal vertical oscillations up to 30-40 m are caused by the diurnal internal tide. The waves are forced due to the interaction of the barotropic tide with the bottom topography. The velocity ellipses of the barotropic tidal currents were estimated using the global tidal model.

 Internal waves BransfieldStrait Antarctica moored measurements Internal waves BransfieldStrait Antarctica moored measurements This research was performed in the framework of the state assignment of Russia (theme No. 0128-2019-0008). The work was supported by the Russian Foundation for Basic Research (grant nos. 20-08-000246, 19-05-00715, and 19-57-60001).

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