tomperatiire. Tlie mean temperature during tlie postseason occupa- 

 tion of the Bonavista triangle was the warmest on record with 25 

 occupations chu'ing 13 years. 



Figures 41 through 43 show the dynamic topography in the vicinity 

 of the Jiabrador Sea section and the temperature and sahnity distri})u- 

 tion found along that section (hning the postseason cruise. As the 

 stations were disposed in tlie form of a single section, rather than a 

 network, the dyjiamic to])ogi'aphy along the section is somewhat con- 

 jectural especially in the C[uieter water of the central J^iabrador Sea. 

 The Jjabrador Current, divided by the slioal off Hamilton Inlet, and 

 the outer part of tlie West Greenland Current off Cape Farewell are 

 recognizable. Tn tlie tem])eratui-e section, the characteristic frigid 

 water over the shelf and temperature maximiun tongue extending 

 downward toward the continental slojx' ick'ntifv the Labrador Cur- 

 rent. In 1960, this temperature maxinnim tongue was w^armer than 

 usual. On the Creenland side the temperature maxinuim of greater 

 than ()° identifies the Irminger Current component of the West Green- 

 land Current. As previously noted, sea ice prevente*! tlie extension of 

 the section beyond station 7588 so no information is available regard- 

 ing the shape of tlie isotherms and isohalines in the colder fresher 

 water inshore of the core of the Irminger Current water. 



Tlie temperature minimum remnant in the intermediate water of 

 the Labrador Sea was warmer than usual with a coldest observation of 

 3.23°. The depth of the temperature maximum beneath it was slioaler 

 than usual, located near 1,500 meters. The deep salinity maximum 

 layer appears to have been centered at about 2,500 meters. 



In consi(h'['ing the volume transport, mean temperature and heat 

 trans])oi-t of the West Greenland Current at the time of the 1960 

 occupation of the Labrador Sea section reasonable assumptions were 

 made in extrapolating a section of anomaly of specific volume from 

 station 7588 to tlie beach as well as in the extrapolation of isotherms. 

 The resulting figures for volume transport, mean temperature and 

 heat transport of the West Greenland Current were 6.09, 4.95, and 

 30.17 respectively. Comparable normal values, from the curves pub- 

 lished in bulletin 35 of tiiis series, are 4.70, 4.50, and 21.14. The 

 corresponding figures for 1959 were 7.56, 4.29, and 32.40 when the 

 normal values were 4.37, 5.14, and 22.49. 



Consick'ring the West Greenland Current to be made up of an 

 Irmingei- Curi'ent coin])onent of constant mean temperature of 5.5° 

 and an East Greenland Current component of constant mean tempera- 

 ture of 3.2° these components had volume transports of 4.64 and 1.45 

 respectiveh- in 1960 compared with seasonal noi-nials of 2.65 and 2.05 

 and in 1959 they were .").57 and 3.99 com[)ared with seasonal normals 

 of ;).70 and 0.67. Thus in 1959, the Ii'Uiinger Ciu'rent component was 

 near normal and the East Greenland Current component had a large 

 positive anomaly. In 1960, the East Greeidand (^nrent component 



66 



