Discovery reports (1962) Discovery reports discoveryreports30inst Year: 1962 ZOOGEOGRAPHY 217 LATITUDE STATION NO — 1500m 3500m 4500 m Text-fig. 22. Distribution of salinity („) between 700 S. and 350 S. in the region of the Greenwich Meridian, May-June 1936. Zones, but in the Antarctic Zone it rises steeply to within 250-100 m. of the surface. The position of its upper boundary with the Antarctic Surface and Antarctic Intermediate water has been dis- cussed already; its lower boundary with Antarctic Bottom Water lies at depths beyond the range of any of the nets fished at the stations fr
Discovery reports (1962) Discovery reports discoveryreports30inst Year: 1962 ZOOGEOGRAPHY 217 LATITUDE STATION NO — 1500m 3500m 4500 m Text-fig. 22. Distribution of salinity („) between 700 S. and 350 S. in the region of the Greenwich Meridian, May-June 1936. Zones, but in the Antarctic Zone it rises steeply to within 250-100 m. of the surface. The position of its upper boundary with the Antarctic Surface and Antarctic Intermediate water has been dis- cussed already; its lower boundary with Antarctic Bottom Water lies at depths beyond the range of any of the nets fished at the stations from which samples have been examined here. The temperature of the Warm Deep Water decreases with depth, but its salinity increases until a maximum is reached at the core of the layer. The rise of this water close to the surface within the Antarctic Zone is very well indicated in Text-figs. 15,17, 19, 21, by the sharp southern bend in the 2°C. isotherm between 500 and 1000 m. and in the i° C. isotherm between 250 and 1000 m. The isohaline for 34700 (Text-figs. 16,18, 20 and 22) indicates the depth at which the core of the layer occurs and shows the sharp rise of the warm deep water to near the surface south of the Antarctic Convergence.
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