of slope water that is warmer, more saline, and 

 denser than the adjacent shelf water. From 

 comparison with sections B and D, it may be 

 inferred that the lens of warm, salty water in 

 the depression is the result of an influx of 

 slope water between sections B and C. 



Further evidence of the effect of the bathym- 

 etry upon the circulation in this area is afforded 

 by the zigzag near 53 °N 52 W of the slope com- 

 ponent of the Labrador Current (figs. 2 and 10). 

 This feature coincides with a northward pro- 

 jecting spur in the bottom topography (fig. 1). 

 The 27.25 o-, surface, which is 200 to 300 meters 

 shallower than the bottom, possesses relief that 

 is the approximate inverse of the bottom topog- 

 raphy. As would be expected, the successively 



shallower cti surfaces (figs. 4, 6, and 8) exhibit 

 a decreasing correlation with the bottom topog- 

 raphy. 



The coldest water observed (-1.62°) occurred 

 at stations 10370 and 10371 at the western end 

 of section D (fig. 17). The absence of such ex- 

 treme temperatures at the other more northern 

 .sections suggests that the source of this cold 

 water was a filament of the Labrador Current 

 inshore of the sections occupied by USCGC 

 EVERGREEN. Bullard, et al. (1961), mention a 

 division of the Labrador Current by the shoal 

 off Hamilton Inlet. The bottom topography (fig. 

 1) includes a rise (<100 fathoms) near 54° 

 45'N, 55°15'W which may be responsible for 

 this division. 



REFERENCES 



Bullard, R. P., R. P. Dinsmore, A. P. Franceschetti, 

 P. A. Morrill, and F. M. Soule (1961) Report of the 

 International Ice Observation and Ice Patrol Service 

 in the North Atlantic Ocean— Season of 1960, U.S. 

 Treasury Department — Coast Guard Bulletin No. 46, 

 114 pp. 



Defant, A. (1961) Physical Oceanography, Perganion 

 Press, /, 729 pp. 



Kollmeyer, R. C. (1967) Contribution to and effect of 

 the Hudson Strait outflow on the Labrador Current. 



Oceanography of the Labrador Sea in the vicinity of 

 Hudson Strait in 1965. U.S. Coast Guard Oceano- 

 graphic Report No. 12, CG-373-12. 



Smith, E. H., F. M. Soule, and 0. Mosby (1937) The 

 Marion and General Greene Expeditions to Davis 

 Strait and Labrador Sea. Scientific results, part 2, 

 physical oceanography, U.S. Treasury Department — 

 Coast Guard Bulletin No. 19, 259 pp. 



UNESCO (1966) International oceanographic tables. 

 UNESCO office of Oceanography, Paris, 118 pp. 



