Results 201 to 210 of about 3,752,884 (240)

Elastic Full-waveform Inversion Using 4c Data Acquisition

Proceedings, 2012
Recent computer computational improvements have allowed us to simulate elastic data in a 3D manner and undertake the challenge to execute elastic full waveform inversion (EFWI). For the field data experiment to demonstrate the technologies, we elected to use a Gulf of Mexico (GOM) ocean bottom cable (OBC) data-set which allowed us to take advantage of
Denes Vigh, Kun Jiao, Dave Watts
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Elastic full waveform inversion with probabilistic petrophysical clustering

Geophysical Prospecting, 2020
ABSTRACTFull waveform inversion aims to use all information provided by seismic data to deliver high‐resolution models of subsurface parameters. However, multiparameter full waveform inversion suffers from an inherent trade‐off between parameters and from ill‐posedness due to the highly non‐linear nature of full waveform inversion.
Odette Aragao, Paul Sava
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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
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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
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Elastic full waveform inversion in the frequency domain

2008
International ...
Gélis, C., Virieux, J., Operto, S.
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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
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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
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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
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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
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