216 [TS]-relationship and Connection with Mixing Processes and Large Water Masses 



5- 



0- 



35rOO 



35-50 %o 



Fig. 103. Calculation of the equivalent thickness of Atlantic water typeaccording to Jacobsen 

 for the "J. Hjorf'-Station 1 May 1935 (63° 0' N., 3° 08' E.). 



50-100 m follows the straight line AP rather well and therefore shows that the water 

 masses of this layer are composed principally of these two components. For different 

 depths the participation of the Atlantic water in the vertical stratification of the ocean 

 at this station can directly be read from the diagram. The following values are ob- 

 tained : 



The equivalent thickness of Atlantic Ocean water at this station is then computed in 

 the following way : 



KO-73 X 50 + 0-70 X 100 + 0-64 x 50 + 0-58 x 50 + 0-50 X 50 + 0-24 x 100 



+ 0-02 X 10) = 108 m 



The resulting thickness is a measure of the amount of Atlantic water which partici- 

 pated in the formation of the water column at this station. A geographical distribution 

 of the equivalent thicknesses over the entire spreading region of Atlantic water in the 

 Norwegian Sea and in the Barents Sea is a rather good representation of the effect 

 of the Atlantic current and of the heat carried by this current towards the north, 

 and also allows a quantitative evaluation. 



5. The Water Masses of the Oceans 



An accurate analysis of the [rS'J-relation in different parts of the oceans leads to a 

 closer classification of the water types of which the ocean is made up. By a somewhat 



