HR: 09:00h
AN: NS11A-03    [Abstracts]
TI: Reflectivity Modeling of a Ground Penetrating Radar Profile of a Saturated Alluvial Formation
AU: * Clement, W P
EM: billc@cgiss.boisestate.edu
AF: CGISS Boise State University, CGISS/MG-206 1910 University Drive Boise State University, Boise, ID 83725 United States
AU: Barrash, W
EM: wb@cgiss.boisestate.edu
AF: CGISS Boise State University, CGISS/MG-206 1910 University Drive Boise State University, Boise, ID 83725 United States
AU: Knoll, M D
EM: mknoll@cgiss.boisestate.edu
AF: CGISS Boise State University, CGISS/MG-206 1910 University Drive Boise State University, Boise, ID 83725 United States
AB: We analyze a GPR reflection profile with synthetic models generated from VRPs and borehole logs at an unconfined fluvial aquifer near Boise, Idaho. The 1D synthetic traces are developed from profiles of dielectric constant and conductivity values. Reflections at the water table/capillary fringe, the base of a sand-filled channel, and the base of two sand-rich lenses within a cobble-dominated unit are recognizable in the surface reflection profile and in all reflectivity models. Less-prominent reflections within stratigraphic units occur in both the surface profile and reflectivity models. Although such minor reflections are not easily correlated, general similarity in presence and location indicate that they are useful for recognizing internal facies structure or character in some cases.
DE: 0689 Wave propagation (4275)
SC: Near-Surface Geophysics [NS]
MN: 2005 Joint Assembly