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Title: Modelagem 1D e 2,5D de dados do método CSEM marinho em meios com anisotropia transversal inclinada
metadata.dc.creator: SANTOS, Walleson Gomes dos
metadata.dc.contributor.advisor1: RÉGIS, Cícero Roberto Teixeira
Keywords: Eletromagnetismo - Modelos matemáticos
Método CSEM
Método dos elementos finitos
Issue Date: 28-Feb-2014
Publisher: Universidade Federal do Pará
Citation: SANTOS, Walleson Gomes dos. Modelagem 1D e 2,5D de dados do método CSEM marinho em meios com anisotropia transversal inclinada. 2014. 79 f. Tese (Doutorado) - Universidade Federal do Pará, Instituto de Geociências, Belém, 2014. Programa de Pós-Graduação em Geofísica.
Abstract: In this work I present the solution to the electromagnetic field generated by a horizontal electric dipole in transversally isotropic media with vertical (TIV) as well as inclined (TII) symmetry axis. In one-dimensional models the electromagnetic field was obtained with two distinct methods: (1) For the TIV case, I have written a semi-analytical solution to the Maxwell’s equations, by using a vector potential formulation; (2) For the TII case, the field was represented as the composition of primary and secondary fields, where primary fields are those found in an underlying isotropic layered medium, and the secondary field is calculated numerically via the finite element method in the spatial Fourier transform domain (kx, ky, z). This last methodology was also used to calculate the fields in two-dimensional structures, including inclined anisotropy in any region of the models. In this 2,5D case, I have applied the finite element method in the (x, ky, z) do main. Here I have used unstructured meshes to discretise the media, and parallel programming to solve the linear systems of equations. The responses were used to study the effects of electrical anisotropy in marine CSEM data.
Appears in Collections:Teses em Geofísica (Doutorado) - CPGF/IG

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