Boletín de Geología

Vol. 46 No. 1 (2024): Boletín de Geología
Artículos científicos

Geometry design for gravimetry and magnetometry surveys using deep learning

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  • Sebastián Martínez-Acevedo,
  • Sait Khurama,
  • Luis Carlos Mantilla-Figueroa,
  • Paul Goyes-Peñafiel
Sebastián Martínez-Acevedo
Universidad Industrial de Santander
Sait Khurama
Universidad Industrial de Santander
Luis Carlos Mantilla-Figueroa
Universidad Industrial de Santander
Paul Goyes-Peñafiel
Universidad Industrial de Santander
DOI: https://doi.org/10.18273/revbol.v46n1-2024004

Published 2024-03-08

Keywords

  • Deep learning,
  • Geophysical exploration,
  • Forward modeling,
  • Acquisition design

How to Cite

Martínez-Acevedo, S., Khurama, S., Mantilla-Figueroa, L. C., & Goyes-Peñafiel, P. (2024). Geometry design for gravimetry and magnetometry surveys using deep learning. Boletín De Geología, 46(1), 59–72. https://doi.org/10.18273/revbol.v46n1-2024004

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Abstract

In geophysical exploration, terrain analysis is fundamental for planning the gravity and magnetic surveys. However, current analyses necessitate supervised use of extensive secondary information. Consequently, this study proposes a methodology that leverages deep learning to assess the impact of vegetation coverage and topography in geophysical acquisition. An artificial neural network multilayer perceptron was used to consider five terrain-related variables, while a convolutional neural network is used for automated classification of vegetation cover on satellite imagery. From this, geophysical acquisition points are obtained, adhering to criteria involving accessibility favourability, distances, restrictions imposed by bodies of water, and forested cover. The obtained geometry was tested in the exploration of the Granito de Durania in Colombia, and the results were analysed using acquisition transects and computational modelling of gravity and magnetic anomalies. Interpolation techniques were applied, with the Inverse Distance Weighting (IDW) method yielding the most informative map for interpreting the delineation of the intrusive body.

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