2014-08-222014-08-222001-09-29HEIMER, Michael. Ensaios sobre a contribuição do ar nos resultados da modelagem do modo transverso-elétrico do método magnetotelúrico. 2001. 47 f. Dissertação (Mestrado) - Universidade Federal do Pará, Centro de Geociências, Belém, 2001. Curso de Pós-Graduação em Geofísica.https://repositorio.ufpa.br/handle/2011/5478We present the numerical solution of the model of an infinite fault for the TE mode using the finite elements method to investigate the effect of the air in the TE solution. The comparision of our solution for the normalized electric field with the Weaver solution showed an expected discrepancy due to the effect of the air, which was neglected intentionally by Weaver to simpify the solution of the problem. The analytic problem is substancially more difficult. A solution of the real problem, partially analytic and partially numerical, was presented by Sampaio. Due to an unexpected discrepancy between our finite elements solution and the exact Sampaio solution, we recalculated his solution. Iterating the numerical part of the Sampaio solution up to higher orders we were able to verify that it presents divergent behavior. To examine the effect of the air on apparent resistivity, we compare three series profiles of apparent resistivity obtained with our FE solution with the profiles obtained using the Weaver solution. The discrepancy between the apparent resistivities shows to be small, figuring in the range of the instrumental field error.porAcesso AbertoProspecção - Métodos geofísicosMétodo magnetotelúricoMétodo dos elementos finitosEnsaios sobre a contribuição do ar nos resultados da modelagem do modo transverso-elétrico do método magnetotelúricoDissertaçãoCNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::GEOFISICA::GEOFISICA APLICADA