Confluence and Redistribution of Atlantic Water in the Nansen
c Annales Geophysicae (2002) 20: 257–273 European Geophysical Society 2002 Annales Geophysicae Confluence and redistribution of Atlantic water in the Nansen, Amundsen and Makarov basins U. Schauer1,8, B. Rudels1,2, E. P. Jones3, L. G. Anderson4, R. D. Muench5, G. Bjork¨ 4, J. H. Swift6, V. Ivanov7, *, and A.-M. Larsson4 1Alfred-Wegener-Institute for Polar and Marine Research, Bremerhaven, Germany 2Finnish Institute for Marine Research, Helsinki, Finland 3Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada 4Goteborg¨ University, Goteborg,¨ Sweden 5Earth and Space Research, Seattle, USA 6Scripps Institution of Oceanography, La Jolla, USA 7Arctic and Antarctic Research Institute, St. Petersburg, Russia 8Presently at Naval Postgraduate School, Monterey, USA *now at Institute of Marine Studies University of Plymouth, UK Received: 12 July 2000 – Revised: 11 June 2001 – Accepted: 9 July 2001 Abstract. The waters in the Eurasian Basin are conditioned During ACSYS 96, no clear fronts between Eurasian and by the confluence of the boundary flow of warm, saline Fram Canadian intermediate waters, such as those observed fur- Strait water and cold low salinity water from the Barents ther north in 1991 and 1994, were found at the Siberian side Sea entering through the St. Anna Trough. Hydrographic of the Lomonosov Ridge. This indicates that the Eurasian sections obtained from RV Polarstern during the summer Basin waters enter the Canadian Basin not only along the of 1996 (ACSYS 96) across the St. Anna Trough and the continental slope but they may also cross the Lomonosov Voronin Trough in the northern Kara Sea and across the Ridge at other topographic irregularities.
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