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The eigenvalue approach to groundwater modelling for resource evaluation at regional scale

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Authors
Bidwell Vince, J, Morgan Matthew, J
Date
2002-06
Type
Conference Contribution - published
Collections
Lincoln Ventures
Keywords
groundwater recharge, aquifer characteristics, groundwater modelling, eigenvalue approach
Fields of Research
ANZSRC::050205 Environmental Management, ANZSRC::040608 Surfacewater Hydrology
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.
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Oral Presentation
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Full Conference Paper
Adobe PDF, 202 KB
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https://hdl.handle.net/10182/3485
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