Accelerating full-waveform inversion with attenuation compensation
TLDR
In this paper, the forward-propagated source wavefield and the residual wavefield were cross-correlated to calculate the gradient in full waveform inversion (FWI).Abstract:
The calculation of the gradient in full-waveform inversion (FWI) usually involves crosscorrelating the forward-propagated source wavefield and the back-propagated data residual wavefield at...read more
Citations
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2018 Annual Report
TL;DR: The American Indian Policy Institute (AIPI) as discussed by the authors is a national level think-tank that focuses on working directly with Tribal Nations in addressing the opportunities and challenges presented in Indian Country today.
Journal ArticleDOI
Attenuating Crosstalk Noise of Simultaneous-Source Least-Squares Reverse Time Migration With GPU-Based Excitation Amplitude Imaging Condition
TL;DR: A new LSRTM approach by using the excitation amplitude (EA) imaging condition to suppress the crosstalk noise, which can avoid the frequent memory transfer and is suitable for the graphics processing unit (GPU) parallelization.
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Efficient modeling of wave propagation in a vertical transversely isotropic attenuative medium based on fractional Laplacian
Tieyuan Zhu,Tong Bai +1 more
TL;DR: In this paper, a viscoelastic VTI wave equation based on fractional Laplacian operations was developed to simulate wave propagation in a vertical transversely isotropic attenuative medium.
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Modeling Frequency-Independent Q Viscoacoustic Wave Propagation in Heterogeneous Media
Guangchi Xing,Tieyuan Zhu +1 more
TL;DR: In this paper, a new viscoacoustic wave equation is proposed to quantify the attenuation in seismic data to push the resolution limits of seismic imaging and inversion, where the power terms of the fractional Laplacian operators are spatially independent, thus accurate and efficient methods such as the Fourier pseudospectral method can be adopted.
Propagating Seismic Waves in VTI Attenuating Media Using Fractional Viscoelastic Wave Equation
TL;DR: In this article , a decoupled fractional Laplacian (DFL) viscoelastic wave equation is proposed to characterize the Earth's frequency-independent Q behavior in the vertical transversely isotropic (VTI) media.
References
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Book
Inverse Problem Theory and Methods for Model Parameter Estimation
TL;DR: This chapter discusses Monte Carol methods, the least-absolute values criterion and the minimax criterion, and their applications to functional inverse problems.
Journal ArticleDOI
An overview of full-waveform inversion in exploration geophysics
Jean Virieux,Stéphane Operto +1 more
TL;DR: This review attempts to illuminate the state of the art of FWI by building accurate starting models with automatic procedures and/or recording low frequencies, and improving computational efficiency by data-compression techniquestomake3DelasticFWIfeasible.
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A review of the adjoint-state method for computing the gradient of a functional with geophysical applications
TL;DR: The adjoint-state method as discussed by the authors is a well-known method in the numerical community for computing the gradient of a functional with respect to the model parameters when this functional depends on those model parameters through state variables, which are solutions of the forward problem.
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Multiscale seismic waveform inversion
TL;DR: The multigrid method is a technique that improves the performance of iterative inversion by decomposing the problem by scale as mentioned in this paper, where at long scales there are fewer local minima and those that remain are further apart from each other.
Journal ArticleDOI
Constant Q-wave propagation and attenuation
TL;DR: In this article, a linear model for attenuation of waves is presented, with Q, or the portion of energy lost during each cycle or wavelength, exactly independent of frequency, where wave propagation is completely specified by two parameters, e.g., Q and c0, a phase velocity at an arbitrary reference frequency ω 0.
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