- 29 - 



o 

 mlnimiom temperature being ranched In enrly April (2.0 - 2,4 C „ ) „ 



Thus, while the cycle iis nwintained throughout the yenrs, the dfites 



nnd temperatures nt the ends of the vnrious phases mpy v«ary consider- 



sbly from yenr to yeor. 



II. Salinities «t Station 3 



In figure 35(b) the gnlinities sit Station 3 «re plotted for depths 



of 0, 50, qnd 150 metres for the period, November 1916 to Mpy 1918. In 



o 

 November 1916, the snlinities at and 50 metres are the spme (32.7 /oo) 



o 

 while the salinity f^t 150 metres is greoter (33.0 /oo). The maximum 



o 

 value of 32 o8 /oo is reached in the surface waters in early December, 



while the maximum vslue of the salinity at depths of 50 and 150 metres 



o 

 is reached in early January with values of 33,0 and 33.3 /oo, respec- 

 tively. Salinities then decrease in the upper levels and a minimum 



o 

 value of 27,9 /oo is reached in the surface waters in the early part 



of Mqy, In the waters at the 50 metre level n minimum value of 



o 

 31.8 /oo is reached in early September, At the 150 metre level the 



o 

 waters attain a salinity of 32,7 /oo in early July, '^nd then increases 



o 

 sharply to a value of 33.3 /oo in early August, The decrease in 



s°llnity in the surface layer is accompanied by a decrease in the 



salinity of the waters at 50 metres. The increase in the salinity of 



the bottom layer in July is associated with an Incre-^se in salinities 



in the upper layers. The increase in the salinity of the bottom layer 



is indicative of replacement of the water at this level by a supply of 



more saline wgter from the open ocean. The replenishment is limited, 



however, as is shown by the decree f^e in the salinity of all layers 



from September until January, An increase in the salinity of =11 



layers takes place from the latter part of January until early April 



