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Source Wavefield Reconstruction for Large-scale 3D Elastic Full-waveform Inversion
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 77th EAGE Conference and Exhibition 2015, Jun 2015, Volume 2015, p.1 - 5
Abstract
Summary
In elastic full-waveform inversion, the medium parameters are updated iteratively by incrementing them with the derivatives of the misfit functional with respect to each of the medium parameters.
The efficient implementation of the derivative computations require large amount of computer memory storage.
The large requirements in terms of storage is one the main barriers for the application of elastic full-waveform inversion to large scale 3D problems.
In this paper, we propose and test a strategy based on reverse-time wavefield reconstruction using the Kirchhoff integral that effectively reduces the storage requirements, at the cost of a factor of two increase in the computational runtime.
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