776 



Wavelengths in microns. 



Fig. 35. — Extinction coefficients of radiation of different wavelengths in pure water and 



in different types of sea water. 



TABLE 892.— COMPOSITION OF SEA WATER* 



The major ions present (over 99.9 percent of dissolved solids) are given in the table 

 for CI = 19.00 °/oo. 



Salinity — 34.325 7... Total solids = 34.48 %,.. 



The C7-ratios are constants for oceanic waters except for HCCV" and Ca ++ which are 

 affected by biological activity. Ratios are not valid in areas of river dilution. 



* For reference, see footnote 302, p. 773. 



TABLE 893.— GEOCHEMISTRY OF THE OCEANS 



The oceans contain about 5 X 10 10 metric tons of dissolved solids. The amount in tons 

 of any element can be estimated by multiplying the values in Table 894 by 1.42 X 10 12 . 

 Rivers each year add about 2.7 X 10° metric tons. 



SMITHSONIAN PHYSICAL TABLES 



