ABSTRACT 



Three cruises were conducted to the Grand Banks of Newfoundland 

 during the 1971 International Ice Patrol season to determine the currents 

 that affect the drift of icebergs. During a niultiship survey in May, standard 

 sections A2 and A3 were occupied concurrently on three different occasions 

 separated by approximately 3 to 4 days. Calculated geostrophic volume 

 transports at standard section A2 varied slightly between occupations, while 

 sharp variations were observed at A3. Upwelling was observed at standard 

 section A3 between the 20 May and 24 May occupations; a sharp decrease in 

 volume transport resulted from the changes in the density structure observed 

 along the continental slope. Direct current measurements made just west of 

 the continental shelf break during the August post-season cruise showed an 

 apparent tidal influence, while measurements along the western edge of the 

 Labrador Current yielded current speeds of approximately one knot. 



Editor's note: Reference to a product or comnieut with respect to it in this publica- 

 tion does not indicate, or permit any iierson to hold out l).v repul)lication in whole, or in 

 part or otherwise, that the product has Ijeen endorsed, authorized, or approved by the 

 Coast Guard. 



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