Print Email Facebook Twitter Probing the solution space of an EM inversion problem with a genetic algorithm Title Probing the solution space of an EM inversion problem with a genetic algorithm Author Hunziker, J.W. Thorbecke, J.W. Slob, E.C. Faculty Civil Engineering and Geosciences Department Geoscience & Engineering Date 2014-10-26 Abstract In an inversion for the subsurface conductivity distribution using frequency-domain Controlled-Source Electromagnetic data, various amounts of horizontal components may be included. We investigate which combination of components are best suited to invert for a vertical transverse isotropic (VTI) subsurface. We do this by probing the solutionspace using a genetic algorithm. We found, by studying a simple horizontally layered medium, that if only electric data are used, either the horizontal or the vertical conductivity of a layer can be estimated properly, but not both. Including the crossline electric field does not add additional information. In contrast, including the two horizontal magnetic components along with the two horizontal electric components allows to retrieve a better estimate of some of the VTI parameters. For an isotropic subsurface, the electric field is sufficient to invert for the subsurface conductivity. Subject electromagneticinversionCSEMfrequency-domain To reference this document use: http://resolver.tudelft.nl/uuid:ec064374-e109-4f0e-bb81-4eb71ef6e418 Publisher SEG ISSN 1052-3812 Source https://doi.org/10.1190/segam2014-0293.1 Source SEG Technical Program Expanded Abstracts, 2014; 84th Conference of the Society of Exploration Geophysicists (SEG), Denver, USA, 26-31 October 2014 Part of collection Institutional Repository Document type conference paper Rights (c) 2014 SEG Files PDF 315262.pdf 447.35 KB Close viewer /islandora/object/uuid:ec064374-e109-4f0e-bb81-4eb71ef6e418/datastream/OBJ/view