Interpolation and trend analysis: Two geohydrological applications

This paper presents two examples of applications to geohydrological data of recent techniques of trend analysis and interpolation. The first case study concerns the resistivity of spring waters of a region in the Appenine mountains. This study has been carried out by Idrotecneco on behalf of the Italian Geological Survey, as part of a pilot study for a geohydrologic map of Italy. The second example concerns the water table levels of an aquifer in the Po River alluvial plain.