CONTENTS 



Introduction P^g^ '73 



The Surface Waters of the South Atlantic Ocean 



Antarctic surface water 



Nature of the Antarctic surface layer i73 



Origin of the Antarctic surface water 1 79 



Movements of the Antarctic surface water in the Falkland Sector . . 182 



Extent of the Antarctic Zone 19° 



Depth of the Antarctic surface layer 193 



Temperature and salinity of the Antarctic surface water .... 194 



Oxygen content of the Antarctic surface water 202 



Phosphate and nitrate content of the Antarctic surface water ... 205 



Sub-Antarctic water 



Nature and depth of the sub- Antarctic surface layer, and the origin and 



movements of sub-Antarctic water 206 



Extent of the sub-Antarctic Zone 210 



Temperature and salinity of the sub-Antarctic water 212 



Oxygen content of the sub-Antarctic water 215 



Phosphate and nitrate content of the sub-Antarctic water .... 215 



Sub-tropical and tropical waters 



Sub-tropical surface and under-layers, and the tropical surface layer . 216 



Temperature and salinity of the sub-tropical and tropical waters . . 218 



Oxygen content of the sub-tropical and tropical waters 219 



Phosphate and nitrate content of the sub-tropical and tropical waters . 219 



Extent of the sub-Tropical and Tropical Zones 220 



The Deep Waters of the South Atlantic Ocean 



Antarctic intermediate water 



Structure and depth of the Antarctic intermediate layer, and the origin 



and movements of Antarctic intermediate water 221 



Temperature, salinity and oxygen content of the Antarctic intermediate 



water 222 



Warm deep water 



Structure and depth of the warm deep layer, and the origin and move- 

 ments of the warm deep water, the North Atlantic deep water and 

 the Pacific deep water 226 



Temperature, salinity and oxygen content of the warm deep water . 230 



Antarctic bottom water 



The Antarctic bottom layer, and the origin and movement of Antarctic 



bottom water 231 



Temperature, salinity and oxygen content of the Antarctic bottom water 233 

 Distribution of phosphate and nitrate in the deep waters of the South 



Atlantic Ocean 233 



Appendix. The winds of the Atlantic Ocean south of 40° S, by Lieut. 



R. A. B. Ardley, R.N.R 235 



List of Literature 237 



