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True-Amplitude Wide-Angle One-Way Operators and High-Gradient Zones
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 68th EAGE Conference and Exhibition incorporating SPE EUROPEC 2006, Jun 2006, cp-2-00462
- ISBN: 978-90-73781-00-9
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Abstract
Accurate one-way wave equations should simulate waveforms with a completeness that is intermediate between ray-based methods and full wave equation finite differences, for an intermediate computational effort. There is a hierarchy of one-way options, including exact coupled forward and backward operators which are mathematically equivalent to the omni-directional parent wave equation. We show numerical results obtained by using an approximate one-way equation with high-accuracy full wave equation finite-difference results, for both reflected and transmitted waves. The effects of lateral gradients in particular are discussed.