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Near-surface 2D imaging via FWI of DAS data: An examination on the impacts of FWI starting model
Full waveform inversion (FWI) and distributed acoustic sensing (DAS) are powerful tools with
potential to improve how seismic site characterization is performed. FWI is able to provide …
potential to improve how seismic site characterization is performed. FWI is able to provide …
Localized adaptive waveform inversion: Theory and numerical verification
Correctly interpreting phase events thanks to data processing techniques based on
correlation or deconvolution has been the focus of numerous studies in the field of high …
correlation or deconvolution has been the focus of numerous studies in the field of high …
Efficient least-squares reverse time migration in TTI media using a finite-difference solvable pure qP-wave equation
The anisotropic characteristics of underground media play a crucial role in seismic wave
propagation and should be accounted for during seismic imaging. The least-squares …
propagation and should be accounted for during seismic imaging. The least-squares …
Deep velocity generator: A plug-in network for FWI enhancement
Known for its great potential for determining subsurface properties quantitatively, full-
waveform inversion (FWI) is a hot topic in the field of exploration seismology. The success of …
waveform inversion (FWI) is a hot topic in the field of exploration seismology. The success of …
Source-independent full-waveform inversion based on convolutional Wasserstein distance objective function
Full-waveform inversion (FWI), as a high-precision model building method, plays an
invaluable role in seismic exploration. The accuracy of conventional FWI is universally …
invaluable role in seismic exploration. The accuracy of conventional FWI is universally …
A three‐dimensional shape optimization for transient acoustic scattering problems using the time‐domain boundary element method
We develop a three‐dimensional shape optimization (SO) framework for the wave equation
with taking the unsteadiness into account. Resorting to the adjoint variable method, we …
with taking the unsteadiness into account. Resorting to the adjoint variable method, we …
Waveform inversion of seismic first arrivals acquired on irregular surface
The irregular topography of the earth's surface and low signal-to-noise ratios of land seismic
data bring challenges to full-waveform inversion (FWI). We propose a robust method for …
data bring challenges to full-waveform inversion (FWI). We propose a robust method for …
Least-squares migration with a blockwise Hessian matrix: A prestack time-migration approach
B Jiang, J Zhang - Geophysics, 2019 - pubs.geoscienceworld.org
We have developed an explicit inverse approach with a Hessian matrix for the least-squares
(LS) implementation of prestack time migration (PSTM). A full Hessian matrix is divided into …
(LS) implementation of prestack time migration (PSTM). A full Hessian matrix is divided into …
Reducing the low-wavenumber dispersion error by building the Lagrange dual problem with a powerful local restriction
The broadband finite-difference (FD) coefficients computed by a cost function have been
widely applied to suppress of numerical dispersion. Under the same conditions, the FD …
widely applied to suppress of numerical dispersion. Under the same conditions, the FD …
Multi-scale full waveform inversion based ongradient decomposition in wavenumber domain
Abstract Full Waveform Inversion (FWI) is a powerful tool to reconstruct velocity model with
high resolution. It is the combination of tomography mode and migration mode, however, the …
high resolution. It is the combination of tomography mode and migration mode, however, the …