-17- 



near the surface. 



The maximum in the offshore heat flux coincides 

 approximately with the place of maximum current velocity. This 

 could explain the broadening of the temperature maximum (warm 

 core) to the right of the current peak (facing downstream) 

 which is apparent in our data, Stommel (1960) defines the warm 

 core as that part of the GuK Stream containing water warmer 

 than the water at the same depth to the right of the current. The 

 core is according to Stommel generally 300m to 400m deep, 

 with the maximumtemperature anomalies at a depth of about 100m, 



In order to get an idea of the order of magnitude 

 of possible effects of the computed fluxes, one can calculate the 

 heat transport normal to a vertical strip following the direction 

 of the Gulf Stream along its axis for a distance of 1000 km and 

 with a depth of 100 m. Let us assume a covariance of 

 u'T' = +10°C cm sec'-"-. The heat transport pC u'T' across the 



1 o 1 



strip turns out to be of the order of 10 cal day" , This 

 amount is not insignificant if compared with the calculated annual 

 poleward transport of heat of 20 x 10^° cal day"-*- at 30°N by the 

 entire North Atlantic Ocean (see Von Arx, 1962, p, 149). At 

 this latitude the North Atlantic is about 6700 km wide. 



