TY - GEN
T1 - Visco-acoustic full waveform inversion with Q-compensation
AU - Xue, Z.
AU - Fomel, S.
AU - Zhu, T.
PY - 2017
Y1 - 2017
N2 - In the real Earth, propagating waves can be attenuated due to the anelastic nature of subsurface media, which results in an attenuated gradient for full waveform inversion (FWI). We propose to use phase-dispersion and amplitude-loss decoupled constant-Q wave equation to formulate a Q-compensated gradient, which has the recovered amplitude while preserving the correct kinematics. The gradient compensation is implemented by reversing the sign of the amplitude-loss term in both forward and adjoint operators. Synthetic examples demonstrate that FWI with Q-compensation has a faster reconstruction of velocity model, especially for its deep structures.
AB - In the real Earth, propagating waves can be attenuated due to the anelastic nature of subsurface media, which results in an attenuated gradient for full waveform inversion (FWI). We propose to use phase-dispersion and amplitude-loss decoupled constant-Q wave equation to formulate a Q-compensated gradient, which has the recovered amplitude while preserving the correct kinematics. The gradient compensation is implemented by reversing the sign of the amplitude-loss term in both forward and adjoint operators. Synthetic examples demonstrate that FWI with Q-compensation has a faster reconstruction of velocity model, especially for its deep structures.
UR - http://www.scopus.com/inward/record.url?scp=85088771197&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85088771197&partnerID=8YFLogxK
U2 - 10.3997/2214-4609.201700716
DO - 10.3997/2214-4609.201700716
M3 - Conference contribution
AN - SCOPUS:85088771197
T3 - 79th EAGE Conference and Exhibition 2017
BT - 79th EAGE Conference and Exhibition 2017
PB - European Association of Geoscientists and Engineers, EAGE
T2 - 79th EAGE Conference and Exhibition 2017: Energy, Technology, Sustainability - Time to Open a New Chapter
Y2 - 12 June 2017 through 15 June 2017
ER -