86 MIYAKE [CHAP. 3 



assuming an average residence time in the deep sea of 300 years and a constant 

 world fission rate of 23 5TJ equal to 1000 tons per year after 100 days cooling, 

 followed by the disposition of all the fission products into the sea. The results 

 of calculation indicate that the total activity in the mixed layer will be equal 

 to that from 40 K. The concentration of 90 Sr and 137 Cs would be respectively 

 6.5 x 10~ 5 [ic and 8.4 x 10~ 5 [jlc per liter or 160 y.[ic of 90 Sr per 1 g of calcium and 

 221 |i.[i.c of 137 Cs per 1 g of potassium in solution in sea-water. 



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