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PS Decomposition of Isotropic Elastic Wavefields Using CNN-Learned Filters
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 81st EAGE Conference and Exhibition 2019, Jun 2019, Volume 2019, p.1 - 5
Abstract
Summary
Imaging of multi-component seismic data requires separation/decomposition of P- and S-waves. Traditional separation methods damage the amplitude and phase information of the input wavefield. We propose a set of spatial filters to perform PS decomposition of isotropic elastic wavefield, which preserves the vector information of the input wavefield. The spatial filters are transformed from the wavenumber domain multipliers, and tuned with a convolutional neural network to improve accuracy. The spatial filters are robust and efficient to be applied. Tests with synthetic data show satisfactory PS decomposition results.
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