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Esben Auken
Quasi 3-D inversion of electromagnetic data
Research output: Contribution to book/anthology/report/proceeding › Article in proceedings › Research › peer-review
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78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008. Society of Exploration Geophysicists, 2018. p. 1193-1197.
Research output: Contribution to book/anthology/report/proceeding › Article in proceedings › Research › peer-review
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TY - GEN
T1 - Quasi 3-D inversion of electromagnetic data
AU - Auken, Esben
AU - Christiansen, Anders V.
AU - Viezzoli, Andrea
AU - Simon, Bernhard
PY - 2018/1/1
Y1 - 2018/1/1
N2 - The spatially constrained inversion (SCI) produces quasi-3D modeling of geoelectrical and electromagnetic data using a 1D forward solution. Information migrates horizontally through spatial constraints and allows resolution of layers that would be locally poorly resolved and it greatly reduces the influence of noisy data. The constraints between models are constructed using Delaunay triangulation, where the length of the lattices scales the constraints between the model parameters. Note that constraints are not only applied along profile lines but also between profile lines. The triangulation also allows creation of data subsets suitable for parallel computing. The SCI algorithm has been applied to helicopter borne SkyTEM data and to demonstrate the generality of the algorithm we will in this study apply it to airborne frequency data (HEM) from Banda Aceh, Indonesia. The field case proves that the SCI produces consistent results that respect the 3D geological variations of the sedimentary settings and it does efficiently suppress along flight line inversion artifacts. .
AB - The spatially constrained inversion (SCI) produces quasi-3D modeling of geoelectrical and electromagnetic data using a 1D forward solution. Information migrates horizontally through spatial constraints and allows resolution of layers that would be locally poorly resolved and it greatly reduces the influence of noisy data. The constraints between models are constructed using Delaunay triangulation, where the length of the lattices scales the constraints between the model parameters. Note that constraints are not only applied along profile lines but also between profile lines. The triangulation also allows creation of data subsets suitable for parallel computing. The SCI algorithm has been applied to helicopter borne SkyTEM data and to demonstrate the generality of the algorithm we will in this study apply it to airborne frequency data (HEM) from Banda Aceh, Indonesia. The field case proves that the SCI produces consistent results that respect the 3D geological variations of the sedimentary settings and it does efficiently suppress along flight line inversion artifacts. .
UR - http://www.scopus.com/inward/record.url?scp=85059076545&partnerID=8YFLogxK
M3 - Article in proceedings
AN - SCOPUS:85059076545
SN - 9781605607856
SP - 1193
EP - 1197
BT - 78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
PB - Society of Exploration Geophysicists
T2 - 78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
Y2 - 9 November 2008 through 14 November 2008
ER -