 |
|
|
|
| HAL : hal-00694658, version 2 |
| DOI : 10.1016/j.jappgeo.2011.07.006 |
| Fiche détaillée |  Récupérer au format |
|
|
| Journal of Applied Geophysics 75 (2011) 277-283 |
|
|
| Versions disponibles : | v1 (08-05-2012) | v2 (09-05-2012) |
|
|
|
|
| 3D resistivity gridding of large AEM datasets: a step toward enhanced geological interpretation |
|
|
| Alexandre Pryet 1James Ramm 2 |
|
|
| (2011) |
|
|
|
| We develop a technique allowing 3D gridding of large sets of 1D resistivity models obtained after inversion of extensive airborne EM surveys. The method is based on the assumption of a layered-earth model. 2D kriging is used for interpolation of geophysical model parameters and their corresponding uncertainties. The 3D grid is created from the interpolated data, its structure accurately follows the geophysical model, providing a lightweight file for a good rendering. Propagation of errors is tracked through the quantification of uncertainties from both inversion and interpolation procedures. The 3D grid is exported to a portable standard, which allows flexible visualization and volumetric computations, and improves interpretation. The method is validated and illustrated by a case-study on Santa Cruz Island, in the Galapagos Archipelago. |
|
|
|
|
|
|
|
|
|
|
|
| 1 : | Structure et fonctionnement des systèmes hydriques continentaux (SISYPHE) |
|
|
|
Université Pierre et Marie Curie [UPMC] - Paris VI – CNRS : UMR7619 – EPHE – MINES ParisTech - École nationale supérieure des mines de Paris |
|
|
| 2 : | Department of Earth Sciences, HydroGeophysics Group |
|
|
|
University of Aarhus |
|
|
| 3 : | Centre de Géosciences (GEOSCIENCES) |
|
|
|
MINES ParisTech - École nationale supérieure des mines de Paris |
|
|
| 4 : | Laboratoire Géomatériaux et Environnement (LGE) |
|
|
|
Université Paris-Est Marne-la-Vallée (UPEMLV) : EA4508 |
|
|
|
|
|
|
|
|
|
| Domaine | : | Planète et Univers/Interfaces continentales, environnement Sciences de l'environnement/Milieux et Changements globaux |
|
|
| Airborne electromagnetics – 3D resistivity model – 3D grid – Kriging – Interpolation |
|
|
|
| Liste des fichiers attachés à ce document : | |||||
|
|||||
|
|
|
| hal-00694658, version 2 | |
| http://hal.archives-ouvertes.fr/hal-00694658 | |
| oai:hal.archives-ouvertes.fr:hal-00694658 | |
| Contributeur : Alexandre Pryet | |
| Soumis le : Mardi 8 Mai 2012, 12:59:48 | |
| Dernière modification le : Mercredi 9 Mai 2012, 14:45:31 | |
