Parameter identification in groundwater modelling (inverse modelling)

  • Rosbjerg, Dan (Project Manager)
  • Barlebo, Heidi Christiansen (Project Participant)
  • Jensen, Karsten Høgh (Project Participant)

    Project Details

    Description

    The objective is to develop a 3-dimensional inverse groundwater model to analyse in detail flow conditions and solute transport in multi-aquifer systems. Mainly, attempts will be made to find estimates for the hydraulic conductivities and the dispersivities as they usually are the poorest-determined parameters in groundwater modelling. The estimates are based on optimization of the sum of squares of measurement residuals. Measurements are hydraulic heads and concentrations of non-reactive solutes. It is assumed that each parameter has a constant value within selected subregions, zones, to reduce their number, which is very important to ensure convergence. Modelling is applied to (1) a field case with an unconfined aquifer, layered soils and limited amount of concentration data and (2) a field case with an unconfined aquifer, very heterogeneous soils and extensive amount of concentration data. In 1999 the main effort has been on reporting inverse modelling theory, the developed three-dimensional inverse flow and transport code, and the two field applications.
    Ph.D. study by Heidi Christiansen Barlebo funded by The Danish Environmental Research Programme and the Geological Survey of Denmark and Greenland.
    StatusActive
    Effective start/end date01/10/1992 → …

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