52 



DISCOVERY REPORTS 



deeper samples to be obtained from lesser and incorrect depths. However, when the 

 vertical section of the anomaly of specific volume was constructed, an attempt was made 

 to correct for this by drawing the isosteres at this station closer to the surface, and using 

 the interpolated values so obtained in the calculation of the dynamic depths to various 

 surfaces at this station. There is no doubt that in February 1929 the current to the 

 north-east in the strait was concentrated close to St. WS 383 in contrast to the wide- 

 spread nature of this current in November 1929. 



The lack of data between the lines from King George Island and Livingston Island 

 gives an impression of the absence of movement in this area. In all probability whirls of 

 movement actually do exist here, although it is impossible to furnish any proof. The 



Fig. 61. Relative topography: 100 m., February 1929. 



influence of the Weddell Sea water on the current in the surface is shown by the 

 northerly component of the dynamic isobaths towards King George Island. This 

 influence is shown to occur somewhat farther into the strait and to stretch over a larger 

 area across the strait than in November of the same year. A circular movement in an 

 anticyclonic direction has been drawn round St. WS 386, which is in agreement with the 

 very light water found in the upper layers at this station. Figs. 60 and 61 show the 

 relative topography at 50 and 100 m. 



The movement of water in February 1929 (Figs. 62-5) differs considerably from that 

 in November of the same year at depths below 200 m. In February at these depths very 



