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Applications of Reverse-time Migration
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- Author / Creator
- Ferner, Robert M
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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.
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- Subjects / Keywords
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- Graduation date
- Fall 2015
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- Type of Item
- Thesis
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- Degree
- Master of Science
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- License
- This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.