-20- 



z = vertical space coordinate (positive 

 if upwards) 

 Since our data show a heat transport in the direction of the 

 warmer ocean, a positive value of C a is to be expected. The 

 values of C a for the different sections and depths are presented 

 in table 4, All values are positive signifying a build up of mean 

 available potential energy at the expense of the eddy available 

 potential energy. 



The value of the conversion of eddy available 

 potential energy to that of the mean flow at the surface off 

 Onslow Bay is 3 x lO"'* erg cm" sec" , Webster (1961b) 

 computes for this section a transfer of kinetic energy from the 

 eddies to the mean flow of 80 x 10" erg cm" sec"-"- at the surface. 



Concluding Remarks 



This study gives an indication of an inverse eddy 

 diffusion process taking place; water parcels which move off- 

 shore are relatively warm (low density) and parcels moving on- 

 shore are relatively cold (high density). It could be that water 

 particles traveling towards the open ocean have their origin 

 in general at higher (warmer) levels in the ocean and /or vice versa. 



