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Waveform inversion by one-way wavefield extrapolation
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 70th EAGE Conference and Exhibition - Workshops and Fieldtrips, Jun 2008, cp-41-00081
- ISBN: 978-94-6282-104-0
Abstract
One-way Riemannian wavefield extrapolation (RWE) on computational<br>meshes conforming to the direction of turning-wave<br>propagation is presented as an alternative forward modeling<br>procedure for waveform inversion. Forward modeling tests<br>demonstrate that the RWE approach may be a sufficiently accurate<br>approximation for calculating the wavefield phases important<br>for early-arrival waveform inversion. Initial results indicate<br>that RWE waveforms are well matched at wide offsets to<br>finite-difference data, and can be used in a waveform inversion<br>scheme to invert synthetic data for 1D velocity perturbations.