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. 8A
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Fig. 8A. Results of TP modeling to show the effects of water saturation on bulk dielectric constant, two-way travel-time (TWT), and reflection coefficient in a 0.5-m (1.6-ft)-thick, 35% porosity, 100% quartz layer overlying a 0.5-m (1.6-ft)-thick, 20% porosity, 60% quartz, 40% mica layer. Constituent dielectric-constant values are shown in the upper lefthand corner of the plot. Water saturation percentages are indicated by the bar on the left side of the plot, and range from 0% to 100%. The middle portion of the plot shows calculated bulk dielectric constant values versus depth. The right side of the model shows calculated two-way travel-times for the two layers, and the reflection coefficient from the interface. Data are summarized in table 4.