COMPOSITION OF SEA WATER 



151 



The following table copied from Kriimmel shows the variation 

 in salinity with depth, and the seasonal variations in the Bay of 

 Danzig on the southern border of the Baltic. (20 : J5J.) 



Variation in Salinity. Bay of Danzig, igo2-iQo6. 



In the Arctic Ocean the variation in the salt content has been 

 found by the Fram to average as follows (Kriiinmel-20 : j.//) : 



Parts per 1,000 



Depth in meters: by weight 



o 2 1 . 00 



40 33.26 



250 .■ 34-97 



450 35-02 



1,000 35.07 



2,000 35 • 08 



3>ooo 35.12 



The increase is rapid at first owing to the fact that the surface 

 strata are diluted by river waters and melting ice. A slight irregu- 

 larity is shown by the fact that at one locality the salt content was 

 35.19 at 2,500 meters' depth. In the East Greenland Mediterranean 

 Sea, between Spitzbergen and the Faroe Islands, the bottom layers, 

 below 800 or 1,000 meters in depth, have a homohaline character, 

 the salinity being 34.91 permille. A homothermal character of 

 — 1.2° C. also prevails. Along the Norwegian coast the upper lay- 

 ers, of 200 to 300 meters, have a uniform salinity of something over 

 35.2 permille, south of 70° north latitude, while north of that it 

 decreases. 



The following table gives some of the variations in salinity in the 

 Atlantic Ocean (Kriimmel-20: ^jcS'-j^/) : 



