Transdimensional geometrical inversion: Application to undercover imaging using gravity data - Archive ouverte HAL
Communication Dans Un Congrès Année : 2024

Transdimensional geometrical inversion: Application to undercover imaging using gravity data

Résumé

between rock units. To account for the unknown number of rock units that may be required by geophysical data, we use a birth and death process which inserts or removes rock units from an existing model. The algorithm also inverts for the geometry of rock units and their densities, while ensuring a parsimonious solution. The method is applied to field data from the prospective Boulia region (Queensland, Australia) to image rocks under sedimentary cover. In this field application, an implicit geological model derived from the interpretation of 2D seismic lines, borehole data, and geological rules is used to define prior geological information constraining the inversion. Preliminary results using the proposed algorithm indicate that up to 2 dense rock units that were not initially identified by geology alone may need to be added to the model. This shows the ability of our method to infer the presence of unseen geological features such as intrusions or facies variations, and that it could potentially be used as a tool to assist exploration geoscientists.
Fichier non déposé

Dates et versions

hal-04685011 , version 1 (03-09-2024)

Identifiants

Citer

Jeremie Giraud, Mahtab Rashidifard, Vitaliy Ogarko, Guillaume Caumon, Lachlan Grose, et al.. Transdimensional geometrical inversion: Application to undercover imaging using gravity data. International Workshop on Gravity, Electrical & Magnetic Methods and Their Applications, May 2024, Shenzhen, China. pp.167-170, ⟨10.1190/GEM2024-042.1⟩. ⟨hal-04685011⟩
17 Consultations
0 Téléchargements

Altmetric

Partager

More