(X 10^ GM/CM?SEC) 

 3.0 



2.2- 



1.6 1.8 



Figure 7. Impedance Versus Density 



p (GM/CM^ 



R 

 025 



0.20- 



0.15 



e{7o) 



80 70 60 



Figure 8. Reflection Coefficient Versus Porosity 



VII-29 



