TY - GEN
T1 - Improved pseudo-hessian for frequency-domain elastic waveform inversion
AU - Oh, J. W.
AU - Min, D. J.
PY - 2012
Y1 - 2012
N2 - In seismic waveform inversion using the adjoint operator, using the pseudo-Hessian matrix as a preconditioner can allow us to achieve computation efficiency. However, the former pseudo-Hessian matrices (i.e., the original and new pseudo-Hessian matrices) have a limitation to simulate the features of the approximate Hessian matrix for the deeper parts of given models, in particular in elastic waveform inversion. To compensate for this limitation, we propose the improved pseudo-Hessian matrix, which is obtained introducing an auxiliary matrix in the original pseudo-Hessian matrix. Comparing the values of the improved pseudo-Hessian matrix with those of the two former pseudo-Hessian matrices indicates that the improved pseudo-Hessian matrix is much closer to the approximate Hessian matrix. Inversion results for the elastic Marmousi-2 model show that the improved pseudo-Hessian matrix increases the convergence rate and yields better results, in particular for the deeper part.
AB - In seismic waveform inversion using the adjoint operator, using the pseudo-Hessian matrix as a preconditioner can allow us to achieve computation efficiency. However, the former pseudo-Hessian matrices (i.e., the original and new pseudo-Hessian matrices) have a limitation to simulate the features of the approximate Hessian matrix for the deeper parts of given models, in particular in elastic waveform inversion. To compensate for this limitation, we propose the improved pseudo-Hessian matrix, which is obtained introducing an auxiliary matrix in the original pseudo-Hessian matrix. Comparing the values of the improved pseudo-Hessian matrix with those of the two former pseudo-Hessian matrices indicates that the improved pseudo-Hessian matrix is much closer to the approximate Hessian matrix. Inversion results for the elastic Marmousi-2 model show that the improved pseudo-Hessian matrix increases the convergence rate and yields better results, in particular for the deeper part.
UR - https://www.scopus.com/pages/publications/84928193944
M3 - Conference paper
AN - SCOPUS:84928193944
T3 - 74th European Association of Geoscientists and Engineers Conference and Exhibition 2012 Incorporating SPE EUROPEC 2012: Responsibly Securing Natural Resources
SP - 266
EP - 270
BT - 74th European Association of Geoscientists and Engineers Conference and Exhibition 2012 Incorporating SPE EUROPEC 2012
PB - European Association of Geoscientists and Engineers, EAGE
T2 - 74th European Association of Geoscientists and Engineers Conference and Exhibition 2012 Incorporating SPE EUROPEC 2012: Responsibly Securing Natural Resources
Y2 - 4 June 2012 through 7 June 2012
ER -