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Communication Dans Un Congrès Année : 2013

Improving a 3D geological model using multiple geophysical methods

Résumé

Due to strong lateral and vertical heterogeneities, enhanced characterization of the karst Unsaturated Zone (UZ) is a challenging task. Many geological, geotechnical and geophysical techniques allow collecting varied underground data on different spatial and temporal scales. However, coupled interpretation of these data remains difficult as the number of techniques increases and the interdependence of the measured properties is not straightforward. 3D modeling provides a framework for the global interpretation of the data. We propose a structural workflow mainly base on geophysical information to build the geological model of the karst UZ. Geological map, geotechnical cross-section and field observations described regional geological structures. Locally, Electric Resistivity Tomography (ERT), Ground Penetration Radar (GPR), and seismic surveys are used to refine the geological structures in a fine scale. The lithological interfaces, faults and fractures network are specified with metric resolution. This local geomodel will be used to constraint dimensions and discontinuities of a hydrogeological model for water flow simulations.
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Dates et versions

hal-03177787 , version 1 (23-03-2021)

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  • HAL Id : hal-03177787 , version 1

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Chloé Ollivier, Simon Damien Carriere, Konstantinos Chalikakis, C. Danquigny, Gérard Massonnat. Improving a 3D geological model using multiple geophysical methods. GOCAD meeting, RING, Research for Integrative Numerical Geology, Sep 2013, Nancy, France. ⟨hal-03177787⟩
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