The eigenvalue approach to groundwater modelling for resource evaluation at regional scale
Abstract
The dynamic response of piezometric head at any location in an aquifer to time variation of
regional land surface recharge and abstraction can be expressed as a linear system comprising
only a few conceptual water storages. Model structure and parameters are related to aquifer
characteristics and spatial pattern of recharge by the eigenvalues and eigenfunctions of a
general analytical solution to the linearised Boussinesq equation. The model is implemented
as a stochastic ARMA difference equation, independently for each location. This modelling
approach is demonstrated for an aquifer of 2000 km² area, yielding additional information
about unobservable recharge and aquifer boundaries.... [Show full abstract]
Fields of Research
050205 Environmental Management; 040608 Surfacewater HydrologyDate
2002-06Type
Conference Contribution - Published (Conference Paper)Collections
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