“…This special type of "austausch" with a dominating average direction may be called "gliding-austausch," similar to the Gleitaustausch in theatmosphere according toRaethjen (1951). 15 In the ocean, the isentropic surfaces are nearly identical with the at-surfaces, and we get a schematic representation of the distribution of lateral flow as indicated in FIGURE Id. Becauseof the inclination of the cr,-surfaces from N to S , we have to assume that the intensity of lateral flow differs essentially in different regions of the cross-section.…”