Calibration and Reliability in Groundwater Modelling: From Uncertainty to Decision Making
(Proceedings of ModelCARE’2005, The Hague, The Netherlands, June 2005). IAHS Publ. 304, 2006. pp.220–226.A synthetic study of the worth of transmissivity and head data to delineate groundwater protection zones in braided alluvial aquifers
J. Kerrou1, P. Renard1, I. Lunati2 & H. J. W. M. Hendricks Franssen3
1 Centre for Hydrogeology, University of Neuchâtel, Emile Argand 11, CH-2007 Neuchâtel, Switzerland
jaouher.kerrou@unine.ch
2 Institute of Fluid Dynamics, Swiss Federal Institute of Technology (ETH), ETH-Zentrum, Sonneggstrasse 3, CH-8092 Zürich, Switzerland
3 Institute of Hydromechanics and Water Resources Management, Swiss Federal Institute of Technology (ETH), ETH-Hönggerberg, CH-8093 Zürich, Switzerland
Abstract
Kriging, stochastic conditional simulations, and stochastic inversion are compared to characterize a synthetic hypothetical braided alluvial aquifer. The performance of the three techniques is compared in terms of reproduction of a 10-day capture zone of a pumping well. The results obtained compare fairly well with previous investigations dealing with the stochastic delineation of capture zones. However, the presence of a large number of deterministic channels in the reference transmissivity field reduces significantly the accuracy of the three techniques as compared to previous published results.Keywords
capture zones; inverse; kriging; stochastic simulations; uncertainty