The non-divergence condition may now be applied to the real component of 

 the previous expression such that 





costi^^cs©) 



where 







Sim9 cos^ 



J S\^h^-©--hcos^©- 



- O 



This expression may now be solved for the sea-surface slope, 

 '>f\ , in terms of the surface stress components and density 



field as 





3i 







21 



