Turbulent Diffusion of Temperature and Salinity 



.20 



.» 



.05 



UT/AZ)' 



Cc/cm) 



Fig. 4, Seimple of experimental data showing (AT/Az) is a linear 

 function of l/t. This is in accord with theory that diffusi- 

 vity D= (T2/u)[(l/t)/(AT/Az)2] . 



IV. SALINITY DIFFUSION 



The substitution of S for T in (4) is all that is necessary. 



Thus 



-'=<«^/4V^i 



(5) 



where D' is the dlffusivlty of NaCl dissolved in water in cm^/sec, 

 S, the mass concentration of salt in gm/cm^, t, the diffusion time in 

 seconds, z, depth in cm, eind Sq, the initial salinity discontinuity 

 in gm/cm'. 



317 



