86 



The Sea-water and its Physical and Chemical Properties 

 Table 35 



of more or less calciferous water by the bottom currents. Approximate calculations 

 made by Wattenberg (1935) have given an intensity for bottom currents which agrees 

 well with that deduced from oceanographic factors. 



The surface and bottom waters show regional differences, while the intermediate 

 water masses of the ocean show practically the same calcium carbonate content 



90" 80° 70° 60° 50° 40° 30° 20° 10° 0° 10° 20° 30° 40° 50° 



Fig. 45. Chart of the calcium percentage saturation of the surface water in the Atlantic Ocean 

 (CaCOa) (according to Wattenberg). 



