A fast 3-D free-surface topography method for acoustic full-waveform inversion

M.J. Huiskes, RE Plessix, Wim Mulder

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Abstract

We propose a finite-difference scheme for the simulation of seismic waves interacting with 3-D freesurface topography. The intended application is velocity model building by acoustic full-waveform inversion (FWI). The scheme follows an immersed boundary approach for wave equations in the firstorder stress-velocity formulation, discretized on a standard staggered grid. Our scheme employs modified 1-D stencils rather than a full 3-D field wavefield extension at the free surface. Although this decreases the accuracy, it improves the scheme's simplicity and robustness. To avoid stability problems, points close to the zero-pressure boundary must be excluded. The scheme, and its adjoint, have been tested by tilted geometry tests and by comparison to a finite-element method. We present a first test result of full-waveform inversion with the new scheme.
Original languageEnglish
Title of host publication78th EAGE Conference and Exhibition 2016, Vienna, Austria
Subtitle of host publicationWorkshop 13 "Methods and Challenges of Seismic Wave Modelling for Seismic Imaging
PublisherEAGE
Pages1-5
Number of pages5
DOIs
Publication statusPublished - 2016
Event78th EAGE Conference and Exhibition 2016 - Messe Wien, Exhibition and Congress Center, Vienna, Austria
Duration: 30 May 20162 Jun 2016
Conference number: 78
http://www.eage.org/sitecore/content/events/home/2016/78th-eage-conference-and-exhibition-vienna-2016?sc_lang=en

Conference

Conference78th EAGE Conference and Exhibition 2016
Abbreviated titleEAGE 2016
CountryAustria
CityVienna
Period30/05/162/06/16
Internet address

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    Huiskes, M. J., Plessix, RE., & Mulder, W. (2016). A fast 3-D free-surface topography method for acoustic full-waveform inversion. In 78th EAGE Conference and Exhibition 2016, Vienna, Austria: Workshop 13 "Methods and Challenges of Seismic Wave Modelling for Seismic Imaging (pp. 1-5). [WS13 A02] EAGE. https://doi.org/10.3997/2214-4609.201601664