SCIENTIFIC RESULTS 



157 



47 

 -46 



45 

 -144 



43 

 ■AZ 



A\ 



40 



~^2r 



39 L 



39 



SZ 5\ So ^g -43 



Characteristic Types of Circulation Around the Grand Bank 



Figure 100. — The two upper maps show X\w L;iIn-a(lor curteiit hugsiiis the (jrand Bank 

 slopes. The type on the left often prevails in earl.v season, while the one on the right 

 is associated with a stronger cold current and a relatively weak Gulf Stream. The 

 lower left-hand sketch reveals a Labrador current developed to maximum ; a con- 

 dition often found in mid ice season. The last map shows the primary circulation 

 which prevails over the Grand Bank. The various systems of circulation as shown 

 aliove have been obtained from many ice patrol surveys in accordance with the 

 Bjerknes's method of hydrodynamics. Iceberg tracks have also been found to agree 

 with tlie stream lines of the currents. 



