30°W 



"1 T" 



15° 0° 



A LARGE-VOLUME STATION 



GREENLAND 



• REGULAR STATION 



DSTD STATION 



1 



75°N ■ 



70° 



60° 



Figure 2.— GEOSECS. Leg 2 of track of RV 

 KNORR, August 12 to 20, 1972. 



Figure 3.— GEOSECS. Leg 3 of track of RV 

 KNORR, September 4 to October 1, 1972. 



leg terminated at Ushuaia, Argentina, instead of Punta Arenas, 

 Chile. P. K. Park was chief scientist. 



Leg 7. Ushuaia, Argentina, to Cape Town, South Africa 

 (fig. 7). A total of 19 stations were occupied on this leg, 7 

 more than originally planned. A series of stations were occu- 

 pied across the Drake Passage and along the edge of the Antarc- 

 tic pack ice. A major loss occurred at station 82 when the 

 hydrowire parted on a deep rosette cast. H. Craig was chief 

 scientist. 



1 1 



• -'' 



BARBADOS 



T" 



50° 



r 



40 



30° 



T 



\ 



35° 30° 25° i5„_ 



A LARGE-VOLUME STATION 

 D REGULAR STATION 

 • STD STATION 



10° 



5°N- 



D 



%>^, 



BRAZIL 



'^^ 



• 



RECIFE 



5°S- 



10° — 



1 



I 



15° 



Figure 4.— GEOSECS. Leg 4 of track of RV 

 KNORR, October 9 to 31, 1972. 



-500 - 



-4000 



-4500 



-5000 





 -500 

 -1000 

 -1500 

 -2000 

 -2500 

 -3000 



- -3500 

 -4000 



-1-4500 



-5000 



3.600 4.200 4.600 



OXYGEN CONTENT |ml/lt| 



Comparison of dissolved oxygen measured by 

 Niskin bottle sample analysis and by the GEO- 

 SECS oxygen probe points up the increased trace 

 definition capability of the latter. 



5.400 



