DBPapers
DOI: 10.5593/SGEM2014/B12/S2.001

A 3D MODEL OF THE AQUIFER OF MILAN (NORTHERN ITALY)

V.Forcella, V. Francani, P. Gattinoni, L. Scesi
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-08-7 / ISSN 1314-2704, June 19-25, 2014, Book 1, Vol. 2, 3-10 pp

ABSTRACT
The goal of this study is to obtain a consistent hydrogeologic 3D model for the aquifer of the city of Milan (northern Italy) and a nearby area of about 580 km2 automatically. The input dataset is discrete and provided into 4 layers. Each observation is characterized by three coordinates and the type of layer it belongs. It is necessary to divide the process into several steps to obtain the 3D model automatically. First of all, the input dataset is checked to detect and remove outlier. Secondly, the point cloud is divided into clusters. Thirdly, each cluster is interpolated using a triangulation method. Fourthly, closed paths between points that belong to a specific cluster are built. Fifthly, points that belong to consecutive clusters are relationally matched to generate the vertical boundary. Sixthly, new information is obtained using the parametric equation of a straight line passing through two points. Lastly, the average method and the information from the previous steps are used to obtain new data at an unobserved location. The application of this methodology to the case study allowed a deterministic reconstruction of the hydrogeologic 3D model consistent with in situ measurements.

Keywords :aquifer, hydrogeologic 3D model, Delaunay triangulation, parametric equation of a straight line