Winter study of Antarctic zone of the Southern Ocean (to the 25-th anniversary of the Soviet-Russian-American drift station “Weddell-1”)

The information concern oceanographic investigations in 1980-90 within Antarctic sea-ice formation area together with “International oceanographic study of Antarctic Zone” ( “iAnZone”) program is given. The supreme component of these investigations became the soviet-american winter expedition “Ice Station Weddell-1” (ISW-1), supported by “Academic Fedorov”(SU), “Nathaniel Palmer” (US) and drift station (3.02.92–9.06.92). The water mass structure and circulation patterns in most remote part of the Weddell Gyre, including Western boundary current parameters and bottom water from the shelf were for the first time defined.