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. 7A
Press Reload to repeat animation
Fig. 7A. 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 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). (A) Animation showing the results of TP modeling. Constituent dielectric-constant values are shown in the upper lefthand corner of the plot. Water saturation percentages of the lower 0.5 m (1.6 m) are indicated by the bar on the left side of the plot, and range from 10% to 100%. The middle portion of the plot shows calculated bulk dielectric-constant values versus depth. The right side of the model shows calculated TWT for the two layers and the reflection coefficient from the interface. Data are summarized in table 4.