100 



50 



10 





0.5 



o.ot 



0.05 



0.1 



0.5 



1.0 



5.0 



Characteristic Spectral Times 

 (Assuming a "Heisenberg" Spectrum) 



Figure 9 

 As a basis for rough numerical estimates, it is convenient to replace E(k) by 

 the solution to Heisenberg's transfer equation [13]. Then, in terms of the Kolmogoroff 

 wave number, which locates the viscous region of the spectrum, 



(11) 



(where is viscous dissipation rate and v is kinematic viscosity), and 



k 



k c 



27 / k V 



1 + 



2 \k 



(12) 



In this estimate, Heisenberg's empirical constant has been chosen as 



Both (10) and 



are plotted in Figure 9 [14]. 



(13) 



383 



