Thibaut Astic
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View article: simpeg/discretize: v0.12.0
simpeg/discretize: v0.12.0 Open
What's Changed bump sphinx and pydata-sphinx to more recent versions by @jcapriot in https://github.com/simpeg/discretize/pull/402 Small cleanups to the external TreeMesh code, no functionality changes by @jcapriot in https://github.com/si…
View article: Geophysical inversions to delineate rocks with CO$_2$ sequestration potential through carbon mineralization
Geophysical inversions to delineate rocks with CO$_2$ sequestration potential through carbon mineralization Open
In addition to reducing anthropogenic emissions of CO$_2$, it is increasingly clear we also need to remove CO$_2$ from the atmosphere in order to avoid some of the worst case scenarios for climate change. Geologic sequestration of CO$_2$ i…
View article: Petrophysically and geologically guided multi-physics inversion using a dynamic Gaussian mixture model
Petrophysically and geologically guided multi-physics inversion using a dynamic Gaussian mixture model Open
SUMMARY In a previous paper, we introduced a framework for carrying out petrophysically and geologically guided geophysical inversions. In that framework, petrophysical and geological information is modelled with a Gaussian mixture model (…
View article: simpeg/simpeg: Simulation
simpeg/simpeg: Simulation Open
SimPEG 0.14.0 Release Notes This release marks a major change in the structure of SimPEG, and it all started with this, #562: What's the problem with Problem? We hope to answer that question with this release! This release will break backw…
View article: simpeg-research/Astic-2020-JointInversion: Joint inversion of synthetic potential fields data based on the DO-27 kimberlite pipe
simpeg-research/Astic-2020-JointInversion: Joint inversion of synthetic potential fields data based on the DO-27 kimberlite pipe Open
Summary We present a framework for petrophysically and geologically guided inversion to perform multi-physics joint inversions. Petrophysical and geological information is included in a multi-dimensional Gaussian mixture model that regular…
View article: A framework for joint petrophysically and geologically guided geophysical inversion
A framework for joint petrophysically and geologically guided geophysical inversion Open
Geophysical inversion is a mathematical process from which an image of the underground structures is recovered from geophysical data. Geophysical methods span a wide range of different physical phenomena, from measuring variations of the E…
View article: simpeg-research/Astic-2019-PGI: Notebooks for PGI inversions
simpeg-research/Astic-2019-PGI: Notebooks for PGI inversions Open
These notebooks were used to generate the figures shown in the article A framework for petrophysically and geologically guided geophysical inversion. We perform PGI over various examples: a 1D MT layered-earth, a DC profile over 2 cylinder…
View article: Structural complexity inferred from anisotropic resistivity: Example from airborne EM and compilation of historical resistivity/induced polarization data from the gold-rich Canadian Malartic district, Québec, Canada
Structural complexity inferred from anisotropic resistivity: Example from airborne EM and compilation of historical resistivity/induced polarization data from the gold-rich Canadian Malartic district, Québec, Canada Open
Structurally complex zones within orogenic terranes typically correspond to areas where there is interference between multiple fold generations and are known to be favorable pathways for fluid flow because of their higher permeability. In …
View article: Geological interpretation of the northern flank of the Matagami camp, Quebec, using gravity and magnetic inversions
Geological interpretation of the northern flank of the Matagami camp, Quebec, using gravity and magnetic inversions Open
The northern flank of the Galine anticline of the Matagami camp has been well known for decades for hosting polymetallic VMS deposits (mostly copper and zinc). In such an already explored area, sophisticated exploration tools must be used …
View article: simpeg/simpeg: Simulation and inversion of time domain IP data
simpeg/simpeg: Simulation and inversion of time domain IP data Open
Simulation and inversion of time domain IP from pr: #590 commits from: @sgkang, @fourndo, @micmitch review from: @lheagu Implementation: Use stretched exponential (chargeability, time constant, frequency dependency) for parameterization Te…
View article: simpeg/simpeg: Joint inversions and more
simpeg/simpeg: Joint inversions and more Open
Highlights objective functions and joint inversions (https://github.com/simpeg/simpeg/releases/tag/0.6.0b0) Interp Utils, VTEM waveform, Mag Driver updates (https://github.com/simpeg/simpeg/releases/tag/0.6.0.b1) examples updates for the e…
View article: Integrated Multi-Parameter Exploration Footprints of the Canadian Malartic Disseminated Au, McArthur River-Millennium Unconformity U, and Highland Valley Porphyry Cu Deposits: Preliminary Results from the NSERC-CMIC Mineral Exploration Footprints Research Network
Integrated Multi-Parameter Exploration Footprints of the Canadian Malartic Disseminated Au, McArthur River-Millennium Unconformity U, and Highland Valley Porphyry Cu Deposits: Preliminary Results from the NSERC-CMIC Mineral Exploration Footprints Research Network Open
Mineral exploration in Canada is increasingly focused on concealed and deeply buried targets, requiring more effective tools to detect large-scale ore-forming systems and to vector from their most distal margins to their high grade cores. …