GPR in a Single Borehole for Determining Complex Geological Structures

ELECTRICAL ELECTROMAGNETICS & GPR O10 - 06 GPR IN A SINGLE BOREHOLE FOR DETERMINING COMPLEX GEOLOGICAL STRUCTURES D. Eisenburger V. Gundelach Federal Institute for Geosciences and Natural Resources Hannover Germany Introduction There is a need to deposit dangerous materials safely in underground repositories. Because technical barriers only provide a limited degree of security it is important to find natural geological barriers which are effective and safe in the long term. GPR surveys from boreholes can be conducted to investigate suitable host rocks e.g. salt in this case. Method used GPR borehole logs are carried out in boreholes drilled underground as