P042 Z-99 Determination of spatial electrical resistivity distribution from CPT survey data Abstract 1 C. HEGYMEGI 1 Z. NYÁRI 1 J. STICKEL 2 I. FEJES 1 A. TILLMANN 3 1 Eötvös Lorand Geophysical Institute 17-23 Columbus Budapest H-1145 Hungary 2 ELGOSCAR 2000 Ltd.17-23 Columbus Budapest H-1145 Hungary 3 Institute for Chemistry and Dynamics of the Geosphere (ICG-IV) Forschungszentrum Jülich Jülich Germany The vulnerability of the groundwater against contamination is determined mainly by the geological structure of the aquifer and the flow conditions (pressure temperature etc.). The spatial distribution of the electrical resistivity provides useful information for investigating and modeling fluid