Quasi 3-D inversion of electromagnetic data

Esben Auken, Anders V. Christiansen, Andrea Viezzoli, Bernhard Simon

Publikation: Bidrag til bog/rapport/konferenceproceedingsKonferenceartikel i proceedingspeer review

Abstrakt

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. .

OriginalsprogEngelsk
Titel78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
ForlagSociety of Exploration Geophysicists
Sider1193-1197
Antal sider5
ISBN (Trykt)9781605607856
StatusUdgivet - 2018
Begivenhed78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008 - Las Vegas, USA
Varighed: 9 nov. 200814 nov. 2008

Publikationsserier

Navn78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008

Konference

Konference78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
Land/OmrådeUSA
ByLas Vegas
Periode9/11/0814/11/08

Programområde

  • Programområde 2: Vandressourcer

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