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An optimal 9-point, finite-difference, frequency-space, 2-D scalar wave extrapolator
Cited 312 time in
Web of Science
Cited 415 time in Scopus
- Authors
- Issue Date
- 1996
- Citation
- Geophysics, 61, 529-537
- Abstract
- In this study, a new finite-difference technique is
designed to reduce the number of grid points needed in
frequency-space domain modeling. The new algorithm
uses optimal nine-point operators for the approximation
of the Laplacian and the mass acceleration terms. The
coefficients can be found by using the steepest descent
method so that the best normalized phase curves can be
obtained.
ABSTRACT
This method reduces the number of grid points per
wavelength to 4 or less, with consequent reductions of
computer memory and CPU time that are factors of tens
less than those involved in the conventional secondorder
approximation formula when a band type solver is
used on a scalar machine.
- ISSN
- 0016-8033
- Language
- English
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