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

Yogi Erlangga Ahmad; Felix J. Herrmann

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

Yogi Erlangga Ahmad, Felix J. Herrmann

Department of Mathematics

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
Publisher	Society of Exploration Geophysicists
Pages	1956-1960
Number of pages	5
ISBN (Print)	9781605607856
Publication status	Published - Jan 1 2018
Event	78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008 - Las Vegas, United States Duration: Nov 9 2008 → Nov 14 2008

Other

Other	78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
Country	United States
City	Las Vegas
Period	11/9/08 → 11/14/08

ASJC Scopus subject areas

Geophysics

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An iterative multilevel method for computing wavefields in frequency-domain seismic inversion. / Erlangga Ahmad, Yogi; Herrmann, Felix J.

78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008. Society of Exploration Geophysicists, 2018. p. 1956-1960.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Erlangga Ahmad, Y & Herrmann, FJ 2018, An iterative multilevel method for computing wavefields in frequency-domain seismic inversion. in 78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008. Society of Exploration Geophysicists, pp. 1956-1960, 78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008, Las Vegas, United States, 11/9/08.

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