Global ETD Search

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The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

1	Inverse method in seismology De Villiers, Jean Schepers 11 1900 (has links) The problem of fitting a material property of the earth to a certain model by analysing a returned seismic signal is investigated here. Analysis proceeds with methods taken from the theory of inverse problems. Seismic wave inversion is tack- led by minimisation of the objective function with respect to the model parameters. Absorbing boundary conditions are implemented using an exponentially decaying ansatz. / Physics / Ph. D. (Physics) 551.22015118 Seismology -- Mathematical models Seismic waves -- Mathematical models Inversion (Geophysics)
2	Inverse method in seismology De Villiers, Jean Schepers 11 1900 (has links) The problem of fitting a material property of the earth to a certain model by analysing a returned seismic signal is investigated here. Analysis proceeds with methods taken from the theory of inverse problems. Seismic wave inversion is tack- led by minimisation of the objective function with respect to the model parameters. Absorbing boundary conditions are implemented using an exponentially decaying ansatz. / Physics / Ph. D. (Physics) 551.22015118 Seismology -- Mathematical models Seismic waves -- Mathematical models Inversion (Geophysics)