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This research aims to evaluate joint 3D inversion of magnetotelluric and controlled-source electromagnetic data to enhance subsurface resistivity models.

August 4, 2026Geophysics

Joint 3D resistivity inversion of ground-based MT and CSEM data to improve resolution for deep mineral exploration

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This research aims to evaluate joint 3D inversion of magnetotelluric and controlled-source electromagnetic data to enhance subsurface resistivity models.
Implemented a joint inversion framework using open-source codes.
Balanced MT and CSEM sensitivities through relative weighting of their Jacobian matrices.
Applied the methodology to field data from northeastern Finland targeting a deep mineral deposit.
Joint inversion improved model resolution compared to individual inversions.
Models were consistent with known geological formations and legacy geophysical data.
Findings confirm the feasibility of combined large-scale 3D MT–CSEM surveys for deep mineral exploration.

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Implication

Randomized trial evaluates improved subsurface models in mineral exploration, suggesting enhanced resolution through joint inversion.

Cite This Study

Védrine et al. (2026) studied this question.

synapsesocial.com/papers/6a71993fc47350ef8e494cc2 https://doi.org/10.1190/geo-2025-0261

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Joint 3D resistivity inversion of ground-based MT and CSEM data to improve resolution for deep mineral exploration

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Discussion

Implication

Cite This Study

Joint 3D resistivity inversion of ground-based MT and CSEM data to improve resolution for deep mineral exploration

Key Points

Discussion

Implication

Cite This Study

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