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Permanent link (DOI): https://doi.org/10.7939/R3H70879Q

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Applications of Reverse-time Migration Open Access

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Other title
Subject/Keyword
elastic wave-equation
reverse-time migration
staggered-grid finite-difference
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Ferner, Robert M
Supervisor and department
Mauricio Sacchi (Physics)
Examining committee member and department
Vadim Kravchinsky (Physics)
Jeffrey Gu (Physics)
Mauricio Sacchi (Physics)
Dmitri Pogosyan (Physics)
Department
Department of Physics
Specialization
Geophysics
Date accepted
2015-07-16T10:31:54Z
Graduation date
2015-11
Degree
Master of Science
Degree level
Master's
Abstract
In a reflection seismic experiment, a controlled source function injects energy into the Earth. This causes the subsurface to undergo elastic deformation referred to as seismic wave propagation. Contrasts in the elastic properties of the propagation medium create interfaces which scatter the seismic wave-field. Scattered source energy is recorded at the Earth's surface as seismic data, these recordings indirectly contain information of subsurface scattering locations. Seismic imaging or migration is an inverse scattering problem which aims to produce structural images of the subsurface from seismic data. Formulations of finite-difference solutions to the elastic wave-equation are well documented in geophysical literature. These finite-difference solutions model seismic wave propagation within a medium on a discrete grid. A major application of this is the seismic imaging technique known as reverse-time migration. This thesis will outline practical applications of elastic staggered-grid finite-difference modelling and the reverse-time migration algorithm.
Language
English
DOI
doi:10.7939/R3H70879Q
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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