Seismic random noise attenuation in the Laplace domain using deep learning
- 1Pukyong National University, Energy Resources Engineering, Busan, Korea, Republic of (wansooha@gmail.com)
- 2Pukyong National University, Energy Resources Engineering, Busan, Korea, Republic of (khail2m@naver.com)
- 3Pukyong National University, Energy Resources Engineering, Busan, Korea, Republic of (lydie.uwibambe@gmail.com)
We attenuated random noise in Laplace-domain seismic wavefields using a modified U-net. Laplace-domain wavefields can be obtained by Laplace-transforming time-domain wavefields. Due to the damping in the Laplace transform, small-amplitude noises near the first arrival signal can severely contaminate Laplace-domain wavefields. Therefore, time-domain denoising is not sufficient for seismic data processing in the Laplace domain. We trained a modified U-net in a supervised manner to generate clean wavefields from noisy wavefields. Since Laplace-domain wavefields show exponential decay with respect to offset, we used the logarithmic representation of the wavefields to train the network. Numerical examples show that the deep-learning approach can attenuate random noise better than denoising using singular value decomposition.
How to cite: Ha, W., Jo, J. H., and Uwibambe, L.: Seismic random noise attenuation in the Laplace domain using deep learning, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-2183, https://doi.org/10.5194/egusphere-egu23-2183, 2023.