Irininger Current coinponont a constant mean temperature of 5.5°, 

 then in 1961 the East Greenland Current component had a volume 

 transport of 2.10 which was close to the seasonal normal of 2.14, while 

 tile Irminger Current component contributed 3.88 which was well 

 above the seasonal normal of 2.59. 



In an attempt to characterize the intermediate water and deep 

 water for an entire occupation of the section, averages liave been 

 taken of all observed temperatures and salinities from depths between 

 450 and 1,750 meters in the central part of the Labrador Sea and 

 scaled values of temperature and salinity at all stations at levels of 

 2,000, 2,500, 3,000 and 3,500 meters. These values for the 1961 

 occupation of the section are given below in comparison with averages 

 for the 14-year period 1948-61. 



Dissolved oxygen measurements of samples from the Labrador Sea 

 section were carried out by tlie metliod outlined by Jacobsen, J. P., 

 et al.^ Samples were taken from all levels except the surface. 

 Teflon coated Nansen-type water bottles were used for sampling 

 except for the 25-nieter level and at station 7,942 at 3,478 meters 

 where silver coated bottles were used. The sampling teclmique was 

 essentially tJiat described by Jacobsen and the complete analysis was 

 carried out within 2 liours of tlie sampling. Titrations were made on 

 each sample until repeated titrations showed a precision of 1 part in 

 300 or better. Standardizations of the NagSjOs solution were re- 

 peatedly carried out dui-ing the cruise, tlius insuring the accuracy 

 and compatibility of tlie titrations. This was accomplished by stand- 

 ardizing with a previously prepai-ed potassium bi-iodate standard. 

 Aliquot samples of the treated sea water were withdrawn by a 50 nd 

 automatic pipette and titrations were made with a micro-burette. 



It should be noted here that the saturation values were obtained 

 by the use of the nomogram of Richards and Corwin.^ Since this 

 nomogram corresponds to the oxygen saturation values of Truesdale, 

 et al.,^ whicli are given only to a minimum temperature of 0° C, it 



-• Jacobsen, J. P., Robinson, Rex and Tlionip.soii, Tlioiuas G. A review of the deterniinalion of dissolved 

 oxygen in sea water 1)y the Wiiilcler method. Union Geodes et Geophys. int., Assoc. d'Oceanog Pliys., 

 Pub. Seientif. no. 11, 19.50. 



3 Richards, Francis A. and Corwin, Nathaniel. Some oceanographic applications of recent determina- 

 tions of the solubiHty of oxygen in sea water. Limnol. and Oceanog., vol 1, pp 263-267, 1956. 



* Truesdale, G. A., Downing, A. L., and Lowden, G. F. The solubility of oxygen in pure water and sea 

 water. J. Appl. Chem., vol 5 (2), pp 53-62, 1955. 



39 



