abstract
Lines of expendable bathythermograph stations were occupied between Cape Town and Prydz Bay, Antarctica, in support of the South African SIBEX I cruise of 1984. These measurements of the thermal detail of the upper water column as well as closely spaced sea surface readings located unambiguously the locations of the major ocean fronts in the area. The conclusion is reached that the upper water column exhibited a well-developed summer regime with a distinct Continental Water Boundary at about 64°30'S in the Prydz Bay experimental area.