. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. HYDROLOGY OF THE SOUTH ATLANTIC 213 To measure the seasonal changes in the temperature and sahnity of sub-Antarctic water five stations have been used, WS 69, 138, 252, 318, and 432, which are fairly close together in a position about 100 miles from the Antarctic convergence in approximately 52° 30' S, 52° 30' W. The results obtained from so few observations are necessarily only TEMPERATURE °C. MARCH JUNE SEPTEMBER DECEMBER MARCH. SALINITY %o MARCH JUNE SEPTEMBER DECEMBER MARCH 6'00 S'OO- 4-00 3
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. HYDROLOGY OF THE SOUTH ATLANTIC 213 To measure the seasonal changes in the temperature and sahnity of sub-Antarctic water five stations have been used, WS 69, 138, 252, 318, and 432, which are fairly close together in a position about 100 miles from the Antarctic convergence in approximately 52° 30' S, 52° 30' W. The results obtained from so few observations are necessarily only TEMPERATURE °C. MARCH JUNE SEPTEMBER DECEMBER MARCH. SALINITY %o MARCH JUNE SEPTEMBER DECEMBER MARCH 6'00 S'OO- 4-00 3-00 200 34-30 34-20 34- 10 34-00 Fig. 21. The seasonal changes of the temperature and saUnity of sub-Antarctic water in 52rs, szrw. approximate, but they are sufficient to show the nature of the changes which take place. The four curves in the upper part of Fig. 21 show the change in temperature from month to month of the water at the surface and at depths of 100, 400, and 600 m. They show that the annual range of surface temperature, at a station about 100 miles north of the convergence, is about 34° C: from 3-5° C in September to 6-9° C. at the end of February. In the deeper layers the annual range decreases, until at 600 m. it is about. 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 may not perfectly resemble the original Institute of Oceanographic Sciences (Great Britain); National Institute of Oceanography of Great Britain; Great Britain. Colonial Office. Discovery Committee. London ; New York : Cambridge University Press
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