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Simultaneous Multisource Full Waveform Inversion with Total Variation Regularization in Time Domain
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 78th EAGE Conference and Exhibition 2016, May 2016, Volume 2016, p.1 - 5
Abstract
Full waveform inversion (FWI) is very time consuming. The simultaneous multisource technique can help reduce the computation cost, but it can produce crosstalk. For this problem, we try to introduce some regularization methods to suppress the crosstalk. The traditional regularization method based on L2 norm always make the inverted model too smooth and affects the accuracy of the inverted results. Therefore, the total variation regularization is introduced to simultaneous multisource FWI to improve the efficiency and suppress the crosstalk. The introduced total variation regularization can help suppress the crosstalk interference caused by the simultaneous multisource FWI, and has the property of edge preservation, which would be more reasonable and in accord with the geological law. Besides, it can improve the resolution of the inverted results. A 2D synthetic complex model is used to demonstrate the validity of the proposed method. The results show that the proposed method is stable and highly accurate, and has a good performance on preserving the edges of the model.