147 Characterization of Porous and Fractured Media
Part 13. Groundwater
Published Online: 15 APR 2006
Copyright © 2005 John Wiley & Sons, Ltd
Encyclopedia of Hydrological Sciences
How to Cite
Renard, P., Gómez-Hernández, J. and Ezzedine, S. 2006. Characterization of Porous and Fractured Media. Encyclopedia of Hydrological Sciences. 13:147.
- Published Online: 15 APR 2006
The characterization of porous or fractured media is a site, scale, and project-specific process aiming at a quantitative description of the geometry and properties of the geological structures controlling groundwater flow and solute transport. The characterization process involves four main steps (i) the definition of the domain and the goals of the characterization; (ii) the collection and analysis of field observations allowing the construction of a geometrical model; (iii) the collection and analysis of field measurements allowing to construct a property model; and (iv) the collection and analysis of field data relative to the state of the system and their integration within the geometrical and property models (inverse problem). When data are sufficient and structures are relatively well known, deterministic techniques of interpolation can be successfully applied to construct the geometric or the parameter models. However, because of the lack of sufficient data, stochastic models are often employed to characterize the heterogeneity that usually exists; such models also facilitate the quantification of the uncertainty in model predictions. Without describing the details of every technique, this article provides an overview of the tools most often used for the characterization of porous or fractured aquifers.
- fractured rocks;
- genetic models;