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Seismic full-waveform inversion using decomposed P-wavefield

SOOYOON KIM1 ,  WOOKEEN CHUNG2 ,  SUNGRYUL SHIN2 ,  DAWOON LEE1
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1 Department of Ocean Energy and Resources Engineering, Korea Maritime and Ocean University, Busan, South Korea.,
2 Department of Energy and Resources Engineering, Korea Maritime and Ocean University, Busan, South Korea.,
JSE 2020, 29(3), 201–224;
Submitted: 9 June 2025 | Revised: 9 June 2025 | Accepted: 9 June 2025 | Published: 9 June 2025
© 2025 by the Authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution -Noncommercial 4.0 International License (CC-by the license) ( https://creativecommons.org/licenses/by-nc/4.0/ )
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Abstract

Kim, S.Y., Chung, W.K., Shin, S.R. and Lee, D.W.. 2020. Seismic full-waveform inversion using decomposed P-wavefield. Journal of Seismic Exploration, 29: 201-224. Here we describe the development of a seismic full-waveform inversion method which employs P-wavefield decomposition to obtain accurate velocity information. Briefly, P-wavefield decomposition for multi-component data was performed with Helmholtz decomposition in elastic media and an objective function. To achieve efficient inversion, application of a back-propagation technique is essential. Therefore, a stress tensor was used for P-wavefield decomposition to allow application of a back- propagation technique. Our proposed inversion algorithm was validated with synthetic data obtained from the Marmousi2 velocity model which simulated an ocean bottom, multi-component survey. The subsurface information obtained with our inversion method was more accurate in regard to velocity and structure compared with a conventional elastic inversion method. In addition. the application of our inversion method to synthetic data simulating an ocean bottom seismometer survey which uses a small number of receivers also obtained better results in a numerical test.

Keywords
full-waveform inversion
P-wavefield decomposition
multi-component
elastic
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Journal of Seismic Exploration, Electronic ISSN: 0963-0651 Print ISSN: 0963-0651, Published by AccScience Publishing
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