Archive image from page 216 of Discovery reports (1933) Discovery reports discoveryreports07inst Year: 1933 HYDROLOGY OF THE SOUTH ATLANTIC 175 cold surface layer, in which the temperature is for the greater part less than - i° C. The discontinuity layer is shown where the -i°, o°, and i° C. isotherms crowd close together, and the depth of this layer below the surface increases gradually from about 100-150 m. in 67° S to 150-200 m. in 64'' S. Below the discontinuity layer lies the LATITUDE STATION 590 66°S 589 67°S 588 587 586 585 584 250 m 500m 750 I'l Fig. 3. Section II, distribution of
Archive image from page 216 of Discovery reports (1933) Discovery reports discoveryreports07inst Year: 1933 HYDROLOGY OF THE SOUTH ATLANTIC 175 cold surface layer, in which the temperature is for the greater part less than - i° C. The discontinuity layer is shown where the -i°, o°, and i° C. isotherms crowd close together, and the depth of this layer below the surface increases gradually from about 100-150 m. in 67° S to 150-200 m. in 64'' S. Below the discontinuity layer lies the LATITUDE STATION 590 66°S 589 67°S 588 587 586 585 584 250 m 500m 750 I'l Fig. 3. Section II, distribution of temperature (° C). warm deep water. At each of the four stations made in Antarctic surface water the temperature does not alter until at least 100 m. below the surface, and the temperature of this loo-m. stratum at each station is shown in the section. The water is not coldest in the extreme south, for there, as will be shown later, it is warmed slightly by up- welling deep water. Instead, the temperature decreases from — 170° C. at the edge of
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