TY - JOUR
T1 - Waveform inversion using the shifted Laplace transform
AU - Kwon, Jungmin
AU - Song, Hyeonjun
AU - Shin, Changsoo
AU - Jang, U. Geun
AU - Jun, Hyunggu
AU - Whang, Hyunseok
N1 - Publisher Copyright:
© 2017 SEG.
PY - 2017/8/17
Y1 - 2017/8/17
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85121854035&partnerID=8YFLogxK
U2 - 10.1190/segam2017-17731124.1
DO - 10.1190/segam2017-17731124.1
M3 - Conference article
AN - SCOPUS:85121854035
SN - 1052-3812
SP - 1610
EP - 1616
JO - SEG Technical Program Expanded Abstracts
JF - SEG Technical Program Expanded Abstracts
T2 - Society of Exploration Geophysicists International Exposition and 87th Annual Meeting, SEG 2017
Y2 - 24 September 2017 through 29 September 2017
ER -