Spatially Adaptive Regularization in Total Field Inversion for Quantitative Susceptibility Mapping
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DOI: 10.1016/j.isci.2020.101553
Abstract: Summary Adaptive Total Field Inversion is described for quantitative susceptibility mapping (QSM) reconstruction from total field data through a spatially adaptive suppression of shadow artifacts through spatially adaptive regularization. The regularization for shadow suppression consists… read more here.
Keywords: spatially adaptive; susceptibility; field inversion; field ... See more keywords
Memory-Efficient 3-D LWD Solver With the Flipped Total Field/Scattered Field-Based DGFD Method
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2019.2950659
Abstract: This letter presents a fast and memory-efficient 3-D electromagnetic solver for logging-while-drilling (LWD) tools based on the flipped total field/scattered field-based discontinuous Galerkin frequency-domain (TF/SF DGFD) method. The new method inherits the Riemann transmission condition… read more here.
Keywords: field; solver; total field; dgfd method ... See more keywords
Mixed Total Field/Scattered Field-Based Discontinuous Galerkin Frequency-Domain Method for Subsurface Sensing
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2018.2883493
Abstract: To model the responses of electromagnetic surveys for geophysical subsurface sensing, a mixed total field/scattered field-based discontinuous Galerkin frequency-domain (TF/SF DGFD) method is proposed in this paper. The proposed TF/SF DGFD method is implemented at… read more here.
Keywords: field; field scattered; subsurface sensing; method ... See more keywords
Full‐tensor magnetic gradiometry: Comparison with scalar total magnetic intensity, processing and visualization guidelines
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DOI: 10.1111/1365-2478.13629
Abstract: Full‐tensor magnetic gradiometry data have been collected commercially for the last few years. However, to date, there is still no clarity on how to compare these data to scalar total field surveys. Some users display… read more here.
Keywords: tensor; scalar total; full tensor; total field ... See more keywords
3D vector finite-element electromagnetic forward modeling for large loop sources using a total-field algorithm and unstructured tetrahedral grids
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DOI: 10.1190/geo2016-0004.1
Abstract: ABSTRACTUnstructured tetrahedral grids with local refinement facilitate the use of total-field solution approaches to geophysical electromagnetic (EM) forward problems. These approaches, when combined with the vector finite-element (FE) method and with refinement near transmitters and… read more here.
Keywords: finite element; tetrahedral grids; total field; electromagnetic forward ... See more keywords
Fast 3D magnetic inversion of a surface relief in the space domain
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DOI: 10.1190/geo2018-0712.1
Abstract: We have developed a fast 3D regularized magnetic inversion algorithm for depth-to-basement estimation based on an efficient way to compute the total-field anomaly produced by an arbitrary interface separating nonmagnetic sediments from a magnetic basement.… read more here.
Keywords: inversion; field anomaly; basement; relief ... See more keywords