An iterative multilevel method for computing wavefields in frequency-domain seismic inversion

Yogi A. Erlangga, Felix J. Herrmann

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We describe an iterative multilevel method for solving linear systems representing forward modeling and back propagation of wavefields in frequency-domain seismic inversions. The workhorse of the method is the so-called multilevel Krylov method, applied to a multigrid-preconditioned linear system, and is called multilevel Krylov-multigrid (MKMG) method. Numerical experiments are presented for 2D Marmousi synthetic model for a range of frequencies. The convergence of the method is fast, and depends only mildly on frequency. The method can be considered as the first viable alternative to LU factorization, which is practically prohibitive for 3D seismic inversions.

Original languageEnglish
Title of host publication78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
PublisherSociety of Exploration Geophysicists
Pages1956-1960
Number of pages5
ISBN (Print)9781605607856
Publication statusPublished - 2018
Event78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008 - Las Vegas, United States
Duration: Nov 9 2008Nov 14 2008

Publication series

Name78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008

Other

Other78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
CountryUnited States
CityLas Vegas
Period11/9/0811/14/08

ASJC Scopus subject areas

  • Geophysics

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