Software, Data and Modelling News: Estimating preferential water flow parameters using a binary genetic algorithm inverse method

  • Authors:
  • Samer Majdalani;Rafael Angulo-Jaramillo;Liliana Di Pietro

  • Affiliations:
  • Laboratoire d'Etude des Transferts en Hydrologie et Environnement, LTHE (UMR 5564, CNRS, INPG, IRD, UJF), BP 53, F-38041 Grenoble Cedex 9, France;Laboratoire d'Etude des Transferts en Hydrologie et Environnement, LTHE (UMR 5564, CNRS, INPG, IRD, UJF), BP 53, F-38041 Grenoble Cedex 9, France and Université de Lyon, Lyon, F-69003, France ...;Institut National de la Recherche Agronomique-Unité Climat, Sol et Environnement, Domaine St Paul, F-84914 Avignon Cedex 9, France

  • Venue:
  • Environmental Modelling & Software
  • Year:
  • 2008

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Abstract

KDW-GA is a framework for the simulation of preferential water flow through unsaturated soils. Preferential flow can be described by a Kinematic Dispersive Wave (KDW) equation which depends on three transport parameters. Transport parameters are estimated with the binary genetic algorithm (GA) inverse method by reducing the errors (cost function) between estimated and observed water flux values. Different GA components are discussed in order to find the best strategy that fits our problem. Recommendations concerning the mutation rate, the elite number, and the pairing technique are deduced with regard to the algorithm performance.