Results 171 to 180 of about 819 (209)

Elastic full waveform inversion using plane-wave

Journal of Applied Geophysics, 2019
Abstract Elastic full waveform inversion (FWI) is used to invert multicomponent data to obtain more accurate subsurface information; however, this method has a much higher computational cost than the acoustic method. In this study, the weighted pseudo-Hessian, which gives a weighting factor based on depth, was used as a preconditioner in the limited ...
Taekhyun Kwon, Joongmoo Byun, Byoung Yeop Kim, Sik Huh   +3 more
openaire   +1 more source

Elastic and anelastic Full-Waveform Inversion across scales

2023
Improving the resolution of seismic models is critical for enhancing our understanding of the Earth's subsurface structure and dynamics. Full-Waveform Inversion (FWI) has emerged as the most promising approach for connecting high-resolution body wave tomography with lower-resolution surface wave tomography at local, regional, and global scales.
openaire   +2 more sources

Elastic Wave Mode Decoupling for Full Waveform Inversion

Proceedings, 2015
Elastic full waveform inversion (EFWI) is coming into use to obtain more accurate parameter estimation in the subsurface. However, it seriously suffers from trade-off between the elastic parameters. To mitigate this effect, we present a strategy for gradients calculation by taking account of elastic wave mode decoupling.
T.F. Wang, J.B. Cheng, C.L. Wang
openaire   +1 more source

Elastic full waveform inversion in the frequency domain

2008
International ...
Gélis, C., Virieux, J., Operto, S.
openaire   +1 more source

Elastic 3D Full Waveform Inversion in the Time Domain

Proceedings, 2013
Full waveform inversion (FWI) is a powerful tool to determine quantitative image of Earth sub-surface from seismic data. It was initially applied to two-dimensional media due to highly computer demanding calculations. Here, we present our implementation of 3D elastic FWI in the time domain.
D. Borisov, S.C. Satish
openaire   +1 more source

Practical elastic full-waveform inversion in the Gulf of Mexico

The Leading Edge
Abstract Elastic full-waveform inversion (EFWI) improves velocity model building accuracy through its utilization of a more accurate representation of wave propagation in the subsurface. Such accuracy is desirable in areas with high-impedance contrasts (e.g., at interfaces separating salt bodies from the surrounding sediments), where ...
Xukai Shen, Simon Luo, Mike O'Brien, Esteban Diaz, Imtiaz Ahmed   +4 more
openaire   +1 more source

Elastic Full-Waveform Inversion With Unconverted-Wave Adjoint Propagators

IEEE Geoscience and Remote Sensing Letters, 2022
Guochen Wu, Zhanyuan Liang, Xiaoyu Zhang, Lingyun Yang   +3 more
openaire   +1 more source

Time-Domain Elastic Full Waveform Inversion With Frequency Normalization

IEEE Transactions on Geoscience and Remote Sensing, 2023
Jinwei Fang, Hui Zhou 0002, Yunyue Elita Li, Ying Shi 0002   +3 more
openaire   +1 more source

Introduction to this special section: Elastic full-waveform inversion

The Leading Edge
Over the past two decades, full-waveform inversion (FWI) has advanced rapidly in the seismic industry, addressing both technical and business challenges in the upstream sector. This technology offers enhanced subsurface information from seismic data. Recently, there has been a growing focus on incorporating elastic physics into waveform inversion, as ...
Partha Routh, Andrew Ratcliffe, René-Édouard Plessix, Ramesh (Neelsh) Neelamani   +3 more
openaire   +1 more source

Target-oriented high-resolution elastic full-waveform inversion with an elastic redatuming method

Geophysics, 2022
Yuanyuan Li, Tariq Alkhalifah, Yuanyuan Li   +2 more
exaly