Kansas Geological Survey, Current Research in Earth Sciences, Bulletin 247,
part 1
Modeling Dielectric-constant Values of Geologic Materials: An Aid to Ground-penetrating Radar Data Collection and Interpretation--Fig. 6B
Fig. 6B. Reflection coefficient at the interface between upper and lower layers versus water saturation of the lower layer in a 1-m (3.3-ft)-thick, 35% porosity, 100% quartz sandstone with a fixed water saturation of 10% in the upper 0.5 m (1.6 ft) and variable water saturation (10% to 100%) in the lower 0.5 m (1.6 ft).