Estimating hydrogeologic parameters from radar data

Charles T. Young

doi:10.1117/12.462251

12 April 2002 Estimating hydrogeologic parameters from radar data

Charles T. Young

Proceedings Volume 4758, Ninth International Conference on Ground Penetrating Radar; (2002) https://doi.org/10.1117/12.462251
Event: Ninth International Conference on Ground Penetrating Radar (GPR2002), 2002, Santa Barbara, CA, United States

Abstract

Radar reflections for a layered medium are dependant on the dielectric constants ofthe layers, which is closely linked to saturated porosity, and more loosely to hydraulic conductivity. Radar data have been obtained at a site where hydraulic conductivity has been measured in great detail. The radar cross section from the site clearly shows layering within the section, and it is tantalizing to predict that the hydraulic conductivities also persist along the bedding surfaces. The radar trace may be converted to a band limited pseudo-dielectric constant log by the same methods used to estimate an acoustic velocity log in seismic work. Thus, the resulting dielectric constant section can be converted to pseudo-porosity and pseudohydraulic conductivity displays. But, because of the limited bandwidth of the radar signal, it is tricky to invert the radar traces to yield dielectric constant and ultimately hydraulic conductivity. The main computations are 1 . deconvolutionw ith Seismic Unix routines and 2. conversion to dielectric constant including filtering to minimize numerical instabilities.

Citation Download Citation

Charles T. Young "Estimating hydrogeologic parameters from radar data", Proc. SPIE 4758, Ninth International Conference on Ground Penetrating Radar, (12 April 2002); https://doi.org/10.1117/12.462251

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