. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. HYDROLOGY OF THE SOUTH ATLANTIC 225 salinity scale has been made to read in a negative direction, the downward slope of the curves towards the north thus showing a decrease in oxygen content, but an increase in salinity. The two curves, which are approximately parallel, show maxima and minima which correspond to the water which flows northwards from the region of mixing in different seasons. Water which sinks from the Antarctic surface layer and flows northwards in summer has a greater oxygen co
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. HYDROLOGY OF THE SOUTH ATLANTIC 225 salinity scale has been made to read in a negative direction, the downward slope of the curves towards the north thus showing a decrease in oxygen content, but an increase in salinity. The two curves, which are approximately parallel, show maxima and minima which correspond to the water which flows northwards from the region of mixing in different seasons. Water which sinks from the Antarctic surface layer and flows northwards in summer has a greater oxygen content and a lower salinity than water which sinks and flows northwards in winter. There are not sufficient points on the curves to allow them to be drawn exactly, but if they have any meaning at all their shape cannot diff^er very. > O CALCULATED FROM OXYGEN MAXIMA A CALCULATED FROM SALINITY MINIMA \ CALCULATED FROM OXYGEN MINIMA L CALCULATED FROM SALINITY MAXIMA Fig. 2j. The change in the speed of the Antarctic intermediate current towards the north. much from that shown. From the distance apart of the consecutive maxima or minima the distance travelled by the water in one year can be calculated. In Fig. 23 the velocities calculated in this way have been plotted against latitude. South of 20° S the velocities calculated from consecutive oxygen maxima and salinity minima are greater than those calculated from the oxygen minima and salinity maxima. This diff'erence would arise if the water which sinks in winter flows, at first, more quickly than that which sinks in summer, and this might be the result of the greater density of Antarctic surface water in winter, causing it to sink more quickly and take a more direct path northwards. The difl^erence could also be explained if the water of minimum salinity. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations
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