| Summary: | Results of CICAR-investigations off the northern Southamerican coast during autumn 1970 and spring 1971 are given, concerning the water below the 10oC-isotherm. Topographies of the sigma rt =27.3 and 27-4 surfaces indicate a motion of the Subantarctic Intermediate Water mass along the continental rise. This motion being far from regular gives an indication of meandering along the boundary of an ocean current. The Upper and Middle Northatlantic Deepwater are clearly distinguishable by their characteristics, i.e. salinity and oxygen maxima. It is possible for some of the deepest reaching stations to make a distinction in the bottom water between water of Arctic and of Antarctic origin. Extrapolation yields an antarctic bottom water contribution of about 40%, being in good agreement with literature.
|
|---|