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2D Frequency-Domain Finite Difference Solution of the Scalar Wave Equation through Plane Wave Solution Interpolation
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 81st EAGE Conference and Exhibition 2019, Jun 2019, Volume 2019, p.1 - 5
Abstract
Summary
Frequency-domain finite-difference solution of the scalar wave equation is the kernel engine for FWI and RTM. In this study, we proposed a computationally efficient approach to cope with numerical dispersion error. To do so, a new 9-point scheme is developed, adapted from the exact finite-difference family of the frequency-domain schemes, which interpolates the plane wave solution in the span of the compact 9-point stencil. Dispersion analysis and numerical simulations confirm that this approach is more accurate than the 25-point scheme, while preserving the low-cost benefits of the 9-point scheme.
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