3D resistivity gridding of large AEM datasets: a step toward enhanced geological interpretation

Abstract : 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.
Type de document :
Article dans une revue
Journal of Applied Geophysics, Elsevier, 2011, 75, pp.277-283. 〈10.1016/j.jappgeo.2011.07.006〉
Liste complète des métadonnées

Littérature citée [19 références]  Voir  Masquer  Télécharger

https://hal.archives-ouvertes.fr/hal-00694658
Contributeur : Alexandre Pryet <>
Soumis le : mardi 8 mai 2012 - 12:59:48
Dernière modification le : jeudi 14 février 2019 - 20:06:02
Document(s) archivé(s) le : vendredi 31 mars 2017 - 06:59:20

Fichier

Pryetetal_2011.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

Alexandre Pryet, James Ramm, Jean-Paul Chilès, Esben Auken, Benoît Deffontaines, et al.. 3D resistivity gridding of large AEM datasets: a step toward enhanced geological interpretation. Journal of Applied Geophysics, Elsevier, 2011, 75, pp.277-283. 〈10.1016/j.jappgeo.2011.07.006〉. 〈hal-00694658v2〉

Partager

Métriques

Consultations de la notice

644

Téléchargements de fichiers

310