Position, width and fragmentation level of fracture zones and position, significance
and characteristic distance of fractures were aimed to determine in a carbonate aquifer.
These are fundamental parameters, e.g. in hydrogeological modelling of aquifers, due
to their role in subsurface water movements. The description of small scale fracture
systems is however a challenging task. In the test area (Kádárta, Bakony Mts, Hungary)
two methods proved to be applicable to get reasonable information about the fractures:
Electrical Resistivity Tomography (ERT) and Pricking-Probe (PriP). PriP is a simple
mechanical tool which has been successfully applied in archaeological investigations.
ERT results demonstrated its applicability in this small scale fracture study. PriP
proved to be a good verification tool both for fracture zone mapping and detecting
fractures, but in certain areas it
produced different results than the ERT. The applicability of this method has therefore
to be tested yet, although its problems most probably origin from human activity which
reorganises the nearsurface debris distribution. In the test site both methods displayed
fracture zones including a very characteristic one and a number of individual fractures
and determined their characteristic distance and significance. Both methods proved
to be able to produce hydrogeologically important parameters even individually, but
their simultaneous application is recommended to decrease the possible discrepancies.