Waveform inversion using the shifted Laplace transform

Jungmin Kwon, Hyeonjun Song, Changsoo Shin, U. Geun Jang, Hyunggu Jun, Hyunseok Whang

Research output: Contribution to journalConference articlepeer-review

Abstract

Laplace domain FWI has advantages due to its insensitivity of the bandwidth with respect to the source wavelet. However, Laplace domain FWI has an inaccuracy problem from its unwanted cross-correlation terms between residuals of first arrival travel times and apparent amplitudes. In this paper, using a new form of objective function (shifted Laplace domain wave field), we obtained improved data resulting from suppressing unwanted cross-correlation terms, crucial factors that make inaccuracy of an inversion result, of residual travel times and apparent amplitudes. To verify our theory, we implemented this theory to a BP 2004 benchmark model and obtained an improved result compared to a method of conventional Laplace domain FWI.

Original languageEnglish
Pages (from-to)1610-1616
Number of pages7
JournalSEG Technical Program Expanded Abstracts
DOIs
StatePublished - 17 Aug 2017
EventSociety of Exploration Geophysicists International Exposition and 87th Annual Meeting, SEG 2017 - Houston, United States
Duration: 24 Sep 201729 Sep 2017

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