. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 160 DISCOVERY REPORTS it strongly supports the hypothesis of an offshore influence at this point. Moreover the data to the north of this line also point to the presence of oceanic water converging southwards to this position. Off Walvis Bay, and to the north of this warm wedge, the water was cooler again, but both the salinities and temperatures are higher than usual for the coastal water, the inshore values of 35-15 %0 and 170 C. being more suggestive of some admixture between the two types of
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 160 DISCOVERY REPORTS it strongly supports the hypothesis of an offshore influence at this point. Moreover the data to the north of this line also point to the presence of oceanic water converging southwards to this position. Off Walvis Bay, and to the north of this warm wedge, the water was cooler again, but both the salinities and temperatures are higher than usual for the coastal water, the inshore values of 35-15 %0 and 170 C. being more suggestive of some admixture between the two types of surface-water. At the western end of this line of stations, in 230 S., there was again a sudden increase of temperature and salinity into the northern boundary of the warm wedge, with temperatures of over 190 C. and salinities over 35-2o%0. 20- S 25- 30- .CAPE FRIO [MOWE POINT I0°E. ORANGE R. Fig. 11. Distribution of temperature at a depth of 200 m., survey I, March 1950. To the north of 230 S. the oceanic waters extend in a thin surface-layer apparently pressing towards the coast between 220 and 200 S. Along the coast the cooler water becomes more and more confined, and eventually to the north of 190 S it appears to converge strongly with the very warm offshore waters (> 220 C.) in a series of eddies about 25 miles from the coast. Finally all trace of it disappears in 160 S., where at 15 miles offshore a temperature of 260 C. was recorded. This whole region between 160 and 190 S. is typical of a convergence region, with very sharp and considerable variations of temperature. Probably the observations demonstrate a compression of the normal convergence between subtropical and tropical surface water, resulting from the presence along the coast of water so abnormally cool for such latitudes. This marked the northern limit of the upwelling region in March Please note that these images are extracted from scanned page images that may have been digitally enhanced for readab
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