The trust region method for time-domain full waveform inversion

DOI

10.2991/iceeg-16.2016.60How to use a DOI?

Keywords

seismic imaging, full waveform inversion, trust region method, acoustic wave equation

Abstract

Full waveform inversion (FWI) is an effective inversion method to obtain high resolution and precision seismic imaging. There are a lot of conventional local optimization methods, such as Newton's method and gradient method, to solve the ill-posed nonlinear problem. However, these methods always lead local convergence so that the result of inversion could not be accepted. To confront the problem, we propose a new approach, the trust region method, to solve full waveform inversion problem. Trust region method has strong convergence properties, and the new step is limited to the neighborhood of the current step. To test the capability of this method, we apply it to the model of salt domes and synthetic Marmousi from the time-domain FWI point of view. Inversion results show that the inverted model is very close to the true model and the precision is high. Hence, the trust region method is a promising method for full waveform inversion.

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  - Peng Lin
AU  - Suping Peng
AU  - Yongxu Lu
AU  - Wenfeng Du
PY  - 2016/06
DA  - 2016/06
TI  - The trust region method for time-domain full waveform inversion
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  - 219
EP  - 222
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceeg-16.2016.60
DO  - 10.2991/iceeg-16.2016.60
ID  - Lin2016/06
ER  -