TY - GEN
T1 - Background velocity inversion by phase along reflection wave paths
AU - Yu, Han
AU - Guo, Bowen
AU - Schuster, Gerard T.
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2014/8/5
Y1 - 2014/8/5
N2 - A background velocity model containing the correct lowwavenumber information is desired for both the quality of the migration image and the success of waveform inversion. We propose to invert for the low-wavenumber part of the velocity model by minimizing the phase difference between predicted and observed reflections. The velocity update is exclusively along the reflection wavepaths and, unlike conventional FWI, not along the reflection ellipses. This allows for reconstructing the smoothly varying parts of the background velocity model. Tests with synthetic data show both the benefits and limitations of this method.
AB - A background velocity model containing the correct lowwavenumber information is desired for both the quality of the migration image and the success of waveform inversion. We propose to invert for the low-wavenumber part of the velocity model by minimizing the phase difference between predicted and observed reflections. The velocity update is exclusively along the reflection wavepaths and, unlike conventional FWI, not along the reflection ellipses. This allows for reconstructing the smoothly varying parts of the background velocity model. Tests with synthetic data show both the benefits and limitations of this method.
UR - http://hdl.handle.net/10754/593367
UR - http://library.seg.org/doi/abs/10.1190/segam2014-0011.1
UR - http://www.scopus.com/inward/record.url?scp=84907778888&partnerID=8YFLogxK
U2 - 10.1190/segam2014-0011.1
DO - 10.1190/segam2014-0011.1
M3 - Conference contribution
SP - 3231
EP - 3236
BT - SEG Technical Program Expanded Abstracts 2014
PB - Society of Exploration Geophysicists
ER -