496 



Ocean Currents in a Non-homogeneous Ocean 



110° W 100° 90' 



100° 90° 80° 70° 60° 50°40°30°20° 10° 0° 10° 20° 30° 40° 50° 60° E 



Fig. 228. Position of the reference-level for transforming relative topographies into 

 absolute depth (numbers in 100 m units). 



