high west of the Carey Islands as were observed 

 east of the ishvnds implied that the core of the 

 warm water layer southeast of the islands turned 

 northward and flowed to the east of them. This 

 was also suggested by the temperature and cur- 

 rent (as deduced from the isohalines) structure 

 in the Cape Norton Shaw — Cape Parry section 

 (figs. 11-14). 



The southernmost salinity section (fig. 21) in- 

 dicated a westward flow between stations 25 and 

 26, and an eastward flow between stations 23 and 

 24. Little flow appeared to occur between stations 

 19 and 23. The westward flow occurring between 

 stations 16 and 19 was indicated on the northern 

 section (fig. 22) to extend as far north as station 

 56. An easterly flow occurred through the north- 

 ern section between stations 52 and 56. The two 

 sections (figs. 21 and 22) do not overlap enough 

 to allow detection of changes in the current pat- 

 terns between 11 and 14 Sept. 



CURRENT METER DATA 



All four of tlie recording current meters func- 

 tioned. The locations and depths of these meters 

 are indicated on figures 1 and 2. Although the 

 data are still being processed, preliminary work 

 has indicated that the measured currents at each 

 location consisted primarily of periodic (e.g. tidal 

 and inertial) oscillations of 15-20 cm/sec ampli- 

 tude superimposed on smaller non-periodic cur- 

 rents on the order of 5 cm/sec. 



The non-periodic currents agreed qualitatively 

 in direction and magnitude with the baroclinic 

 currents as deduced from the slopes of the iso- 

 halines, although a more quantitative comparison 

 is needed to separate the baroclinic and baro- 

 tropic modes. A more tliorougli analysis of the 

 measured currents is in progress at the ITniver- 

 sity of Washington based on filtering of the data 

 which will isolate the periodic and non-periodic 

 comnonents. 



The data were too voluminous to be included 



in the present report, but may be obtained in 

 their entirety from the Department of Ocean- 

 ography University of Washington, Seattle. 



CONCLUSION 



The identifiable water masses in the Smith 

 Sound-northern Baffin Bay region consisted of 

 uniformly cold (<()°C) water which appeared 

 to flow southward from Smith Sound throughout 

 the water column and northward from Baffin 

 Bay in the eastern near-surface layers. Warm 

 (>0°C) deep water flowed northward — primari- 

 ly east of the Carey Islands — from Baffin Bay. 



The baroclinic currents deduced from the 

 slopes of the isohalines suggested a cyclonic cir- 

 culation pattern, with northward flow east of 

 Carey Islands and southward flow west of them. 

 The presence of "blobs" of warm and cold water 

 in the vicinity of the Carey Islands suggested a 

 zone of turbulent mixing between the north- 

 flowing warmer water and the south-flowing cold 

 water. Such a mixing zone would result in the 

 effective entrainment of the north-flowing warm 

 water into the colder, south-flowing current, so 

 that a westward transfer of warm water would 

 occur continually along the shear zone between 

 the north and south-flowing currents. Such a 

 westward transfer would be erratic, depending on 

 the space and time scales of the turbulent proc- 

 esses, and therefore would agree qualitatively 

 with the erratic nature of latitudinal flow as de- 

 duced from the longitudinal sections. 



No large scale time changes were observed 

 during the duration of the cruise. Changes were 

 observed, liowever, in some of the details and 

 were probably related to the turbulent processes 

 discussed above. 



REFERENCES 



Dunbar, M. .1.. Moira Dunbar and D. C. Xutt. 1967. The 

 Baffin Bay-North Water Project Report Number 1. 

 Arctic Inst, of North America Research Paper No. 45. 

 71 pp. 



