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Estimating Debye Parameters from GPR Reflection Data Using Spectral Ratios
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 22nd EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, Mar 2009, cp-157-00051
Abstract
In the GPR frequency range, electromagnetic wave attenuation is largely controlled by dielectric<br>relaxation processes. A primary relaxation commonly occurs in the 10 – 100 MHz range for many<br>earth materials in which the GPR signal propagates effectively. This relaxation leads to strong nonlinearity<br>in the frequency dependent attenuation and occurs in a frequency range that is often used for<br>groundwater investigations.