Studies on multi-scale full waveform inversion for time-domain acoustic wave equation based on virtual-source precondition

DOI

10.2991/iceeg-16.2016.73How to use a DOI?

Keywords

virtual-source, precondition, full-waveform inversion

Abstract

Time-domain multi-scale full waveform inversion (FWI) is an important method for seismic imaging. Using different frequency contents of seismic data, this method mitigates the effect of the local-minima problem by sequential inversion. One of the important factors determining the convergence rate of the nonlinear inversion is the precondition of the gradient. Virtual-source precondition has been successfully applied to Laplace-domain and Laplace-Fourier-domain FWI. In this paper, we will examine the application of the virtual-source precondition to time-domain multi-scale FWI. The research results reveal that, compared to the gradient method without precondition, the virtual-source-based gradient method achieves much greater convergence rate while its additional computational cost is very low. Therefore, virtual-source precondition is very effective for time-domain multi-scale FWI.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Mengxue Dai
AU  - Jingbo Chen
PY  - 2016/06
DA  - 2016/06
TI  - Studies on multi-scale full waveform inversion for time-domain acoustic wave equation based on virtual-source precondition
BT  - Proceedings of the 7th International Conference on Environment and Engineering Geophysics & Summit Forum of Chinese Academy of Engineering on Engineering Science and Technology
PB  - Atlantis Press
SP  - 267
EP  - 270
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceeg-16.2016.73
DO  - 10.2991/iceeg-16.2016.73
ID  - Dai2016/06
ER  -