Conclusions 



The cruise has answered part of 

 the question posed concerning 

 the TOD's ability to follow the 

 geostrophic flow. The data 

 indicates that a TOD will follow the 

 geostrophic flow as long as the 



drogue is below the thermocline. 

 Fornext season, IIP intends to 

 lengthen the drogue tethers on 

 the buoys to 50m to place the 

 drogues consistently below the 

 surface layer and the thermocline 

 in the area north of 43°N (Scobie 



and Schultz, 1976). This plan 

 would eliminate the step of 

 removing wind-driven current 

 from the TOD motion to calculate 

 geostrophic current. 

 The comparisons of FNOC winds 

 conducted in both 1 983 and 



Figure B-10. Actual iceberg and TOD drift from 17-22July.. The predicted iceberg motion is from the International 

 Ice Patrol drift model. The model drift was begun on 16 July and all predicted motion is from this initial sighting. Tick 

 marks are at OOOOZ each day. 



49-OON 



48-30N 



TOD Drift 

 Observed Drift 

 Predicted Drift 



46-30W 



46-OOW 



45-30W 



45-OOW 



Figure B-1 1 . The iceberg Drift model error plotted vs total distance the iceberg drifted. The iceberg was drifted 

 continuously by the model from its initial sighting position on 16 July 1 984. 



60 -, 



50 



Distance Drifted 



Since initial sighting 



40 



30 



ra 

 5 



20 -I 



10 



60 80 



Hours after sighting 



140 



67 



