Seismic waveform inversion with gauss-newton-krylov method

Yogi A. Erlangga, Felix J. Herrmann

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Summary: This abstract discusses an implicit implementation of the Gauss-Newton method, used for the frequency-domain fullwaveform inversion, where the inverse of the Hessian for the update is never formed explicitly. Instead, the inverse of the Hessian is computed approximately by a conjugate gradient (CG) method, which only requires the action of the Hessian on the CG search direction. This procedure avoids an excessive computer storage, usually needed for storing the Hessian, at the expense of extra computational work in CG. An effective preconditioner for the Hessian is important to improve the convergence of CG, and hence to reduce the overall computational work.

Original languageEnglish
Pages (from-to)2357-2361
Number of pages5
JournalSEG Technical Program Expanded Abstracts
Volume28
Issue number1
DOIs
Publication statusPublished - 2009

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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