Using Cpt To Estimate An Aquifers Heterogeneity

The intensive growth of industrial and agricultural activity causes an increase of polluted<br>areas. In order to predict the spreading of near-surface contamination it is essential to be familiar<br>with the hydrogeological parameters of the investigated earth. The cone penetration technology<br>is capable to resolve the structure of the subsurface in detail and logs various physical parameters<br>during soil penetration. Cone penetration tests (CPT) were performed at the test site Krauthausen<br>to investigate the aquifer's heterogeneity in detail.<br>We present the results of the CPT survey at the test site and the estimated three dimensional<br>heterogeneous distribution of physical soil properties. We estimated the hydraulic conductivity from<br>those data using regression analysis. Therefore the CPT method is capable to gain a spatial, highly<br>resolved data set of the hydraulic conductivity distribution. Furthermore we used this data set<br>to estimate the spatial heterogeneity of hydraulic conductivity, i.e. the correlation length and<br>anisotropy within the aquifer.