ОкеанологияОкеанология0030-1574The Russian Academy of Sciences1330210.31857/S0030-1574592191-200Research ArticleStructure and variability of the synoptic disturbances of ocean currents in the Drake Passage and Scotia SeaKoshlyakovM. N.mnkoshl@ocean.ruRepinaI. A.mnkoshl@ocean.ruSavchenkoD. S.mnkoshl@ocean.ruTarakanovR. Yu.mnkoshl@ocean.ruTaroyanV. K.mnkoshl@ocean.ruShirshov Institute of Oceanology, Russian Academy of SciencesObukhov Institute of Atmospheric Physics of the Russian Academy of Sciences090620195921912000706201907062019Copyright © 2019, Russian academy of sciences2019<p>Twenty two years data of the satellite altimeter observations are used for the analysis of structure and variability of the ocean current synoptic disturbances in the Drake Passage and Scotia Sea. Wavelet analysis of the time series of ocean surface absolute dynamics topography (OSADT) at a set of points in the studied ocean area has revealed a high degree of the statistical nonstationarity of these series appearing as short (few years) intervals of intensive fluctuations of OSADT separated by long intervals of weak fluctuations. Analysis of the synoptic OSADT maps has showed that the intervals of the strong ocean current fluctuations at a point are conditioned by the alternation of processes of cyclonic and anticyclonic eddy-meanders formation by the jets of Antarctic Circumpolar Current, strengthening of the eddies, their following attenuation and final eddy confluence with the mother jets. Besides of the statistical nonstationarity, a considerable spatial variability of the statistical characteristics of the ocean current synoptical disturbances has been revealed for the scales of 150200 km.</p>Antarctic Circumpolar CurrentDrake Passageeddiesjetswavelet-analysissatellite altimetryАнтарктическое циркумполярное течениепролив Дрейкавихриструивейвлет-анализспутниковая альтиметрия[Кошляков М. Н., Савченко Д. С., Тараканов Р. Ю. Энергообмен между струями Антарктического циркумполярного течения и синоптическими вихрями в проливе Дрейка и море Скотия // Океанология. 2018. Т. 58. № 3. С. 347–357.][Тараканов Р. Ю., Гриценко А. М. Тонкая струйная структура Антарктического циркумполярного течения к югу от Африки // Океанология. 2014. Т. 52. № 6. С. 725–736.][Chelton D. B., Schlax M. G., Samelson R. M. Global observations of nonlinear mesoscale eddies // Progr. Oceanogr. 2011. V. 91. P. 167–216.][Fu L.-L. Pattern and velocity of propagation of the global ocean eddy variability // J. Geophys. Res. 2009. V. 114. № C11017, doi: 10.1029/2009JC005349.][Sokolov S., Rintoul S. R. The circumpolar structure and distribution of the Antarctic Circumpolar Current fronts. Part 1: Mean circumpolar paths // J. Geophys. Res. 2009. V. 114. № C11018, doi: 10.1029/2008J005108.][Torrence C., Compo G. P. A practical guide to wavelet analy-sis // Bull. Amer. Meteor. Soc. 1998. V. 79. № 1. P. 1–78.]