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.108–112.

Using Bayesian inverse modelling in real-world projects: opportunities and challenges

J. R. VALSTAR, B. MINNEMA, J. J. J. C. SNEPVANGERS & C. B. M. TE STROET

Netherlands Institute of Applied Geoscience TNO - National Geological Survey (TNO-NITG), PO Box 80015, NL-3508 TA Utrecht, The Netherlands

johan.valstar@tno.nl

Abstract Since a few years ago, TNO has had an efficient representer-based inverse algorithm operational for practical applications. This paper discusses the advantages that are encountered by using the inverse algorithm in real- world groundwater modelling studies. We also discuss problems we encounter in real-world groundwater modelling studies that are related to convergence problems for nonlinear, nondifferentiable packages of the groundwater model, especially drains.

Keywords calibration; drains; inverse modelling; practical applications, representer-based Bayesian method