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Truncated plurigaussian simulations to characterize aquifer heterogeneity
Grégoire Mariethoz1, Philippe Renard, Fabien Cornaton
1Centre for Hydrogeology, University of Neuchâtel, 11 Rue Emile Argand, CP 158, CH-2000 Neuchâtel, Switzerland. gregoire.mariethoz@unine.ch
Ground Water
|September 17, 2008
Summary
This study applies truncated plurigaussian simulation to model contaminant migration in heterogeneous geological media. The method accurately infers facies and hydraulic parameter distributions for realistic geological patterns.
Area of Science:
- Geosciences
- Hydrogeology
- Environmental Engineering
Background:
- Realistic geological pattern generation requires integrating lithofacies information.
- Contaminant migration in heterogeneous media necessitates advanced stochastic modeling.
- The Swiss Plateau's western Molasse formation presents a highly heterogeneous environment.
Purpose of the Study:
- To demonstrate the application of truncated plurigaussian simulation for contaminant migration assessment.
- To infer facies and hydraulic parameter distributions using geological data.
- To model contaminant transport in complex geological settings.
Main Methods:
- Utilizing the truncated plurigaussian simulation method (Le Loc'h and Galli 1994).
- Employing multi-Gaussian simulations to generate categorical variable maps.
- Applying the technique to a major contaminated site in Switzerland.
Main Results:
- Successful inference of facies and hydraulic parameter distributions.
- Demonstration of contaminant plume assessment in a heterogeneous formation.
- Validation of the stochastic method for complex transport processes.
Conclusions:
- Truncated plurigaussian simulation is effective for modeling contaminant migration.
- The method enhances the realism of geological patterns and parameter inference.
- This approach is crucial for characterizing transport in highly heterogeneous media.
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