1. Department of Hydrology and Hydraulic Engineering; Vrije Universiteit Brussel (VUB); Pleinlaan 2 1050 Brussels Belgium
2. Environmental Modeling Unit; Flemish Institute for Technological Research; Boeretang 200 2400 Mol Belgium
3. Department of Soil Management; Ghent University; Coupure links 653 9000 Ghent Belgium
4. Department of Fundamental Electricity and Instrumentation; Vrije Universiteit Brussel (VUB); Pleinlaan 2 1050 Brussels Belgium
5. Department of Bioscience Engineering; University of Antwerp; Groenenborgerlaan 171 2020 Antwerp Belgium
6. School of the Environment; Flinders University; GPO Box 2100 Adelaide SA 5001 Australia