Gaussian beam reconstruction of seismic data

Author: oqih

August undefined, 2024

WebAn approach for true-amplitude seismic beam imaging of multicomponent seismic data in 2-D anisotropic elastic media is presented and discussed. Here, the recovered true-amplitude function is a scattering potential. This approach is a migration procedure based on the weighted summation of pre-stack data. WebNov 22, 2024 · However, when it is used for ocean-bottom seismic data, the incomplete boundary condition will yield some nonphysical artifacts in the final migrated images. To solve this problem, we extend the elastic Gaussian-beam migration method from 3C to 4C by introducing the pressure recording to represent the stress tensor on the ocean bottom.

Elastic Gaussian-beam migration for four-component ocean-bottom seismic ...

WebIn this paper, a Fully Convolutional Residual Network (FCRN) is proposed to achieve seismic impedance inversion and seismic data reconstruction simultaneously, and a method based on the homoscedastic uncertainty of the Bayesian model is used to balance the weights of the loss function for the two tasks. ... We added six levels of Gaussian … WebWe study seismic data decomposition problem in this paper. Seismic data representation using Gaussian beams are proposed.This is an l0 quasi-norm constrained minimization problem.In solving the l0 quasi-norm minimization,scanning event in phase is proposed and a gradient descent method of rapid monotonic decrease is utilized.The sparse … tarzan boy by baltimore

Gaussian beam reconstruction of seismic data

Webbased waveﬁeld reconstruction methods depend on a sufﬁ-ciently accurate waveﬁeld. Gaussian beam migration (GBM) is based on high-frequency approximation of wave … WebGaussian-beam depth migration and related beam migration methods can image multiple arrivals, so they provide an accurate, flexible alternative to conventional single-arrival Kirchhoff migration. Also, they are not subject to the steep-dip limitations of many (so-called wave-equation) methods that use a one-way wave equation in depth to downward … Websic Gaussian-beam method, FGA keeps the Gaussians frozen (at a ﬁxed width) during the propagation process and adjusts their amplitudes to produce an accurate approximation after summation. We perform the initial decomposition of seismic data using a fast version of the Fourier-Bros-Iagolnitzer (FBI) transform and propagate the frozen Gaussian ... the bris episode

Least-Squares Gaussian Beam Transform for Seismic Noise Attenuation ...

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WebMar 1, 2010 · In the field of seismology, the Gaussian-beam migration (GBM) method was proposed by Hill (1990Hill ( , 2001 after studying seismic wavefield forward modeling with Gaussian-beam theory (Červený ... WebSep 14, 2010 · The single scattering approximation introduces the linear integral operator that connects the sharp local perturbations of the macrovelocity model with the multishot/multioffset data formed from reflected/scattered waves. We develop the pseudoinverse of this operator using the Gaussian beam based decomposition of … the brisk cleaning servicesWeband M. Urosevic -- Using Gaussian beam model in oceans with penetrating slope bottoms / Y.-T. Lin [und weitere] -- Application Niche genetic algorithms to AVOA inversion in orthorhombic media / M.-H. Lu and H.-Z. Yang --Reconstruction of seismic impedance from marine seismic data / B.R. Mabuza [und thebrisklist

"WebJan 15, 2016 · In a nonattenuating homogeneous medium, we synthesize the Green function using a Gaussian beam and the acoustic wave equation in the frequency domain, respectively (as shown in figure 2).The left hand side of figure 2(a) is the Green function solved by the frequency domain finite difference method and the frequency is 20 Hz (the … " - Gaussian beam reconstruction of seismic data

Gaussian beam reconstruction of seismic data

Gaussian beam migration Geophysics GeoScienceWorld

WebJul 18, 2024 · In this approach, we first introduce the plane-wave decomposition (PWD) theory to implement TGB decomposition of noisy seismic data and then apply data reconstruction. Unlike most state-of-the-art algorithms, random noise is attenuated in the process of Gaussian beam reconstruction. In the reconstruction records, the useful … WebJust as synthetic seismic data can be created by expressing the wave field radiating from a seismic source as a set of Gaussian beams, recorded data can be downward …

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WebNov 1, 1990 · Just as synthetic seismic data can be created by expressing the wave field radiating from a seismic source as a set of Gaussian beams, recorded data can be downward continued by expressing the recorded wave field as a set of Gaussian beams emerging at the earth's surface. In both cases, the Gaussian beam description of the … Web1999). In this article, the Gaussian beam migration method is investigated for the inversion of teleseismic data with ap-plication to passive imaging experiments. Gaussian beam migration uses an overcomplete frame of smoothly localized Gasussian windows to represent the seismic data and paraxial Gaussian beams to propagate the data back …

WebNov 1, 2024 · For 3D seismic data reconstruction and denoising, we define the following function: (1) d = S c + n, where, d denotes the observed data, ... Gaussian beam reconstruction of seismic data. Geophysics, 84 (5) (2024), pp. S373-S387. CrossRef View in Scopus Google Scholar. Beckouche and Ma, 2014. Webthe frozen Gaussian approximation (FGA) method to compute 3D sensitivity kernels and seismic tomography of high-frequency. Rather than standard ray theory used in seismic inversion (e.g. Kirchho migration and Gaussian beam migration), FGA is used to compute the 3D high-frequency sensitivity kernels for travel-time or full wave-form inversions.

WebApr 14, 2024 · The vertical seismic profiling (VSP) Gaussian beam migration is a seismic imaging method with both computational efficiency and imaging precision. It can get high-resolution structural features near the well. However, the VSP migration based on primary reflection imaging is limited by the observation system, which makes it unable to image … WebAdaptive beam migration (ABM) is the implementation of a prestack depth migration based on Gaussian technology. ABM is a flexible, targetable migration algorithm that combines many of the features associated with …

WebMay 13, 2024 · Gaussian beam migration), FGA is used to compute the 3D high-frequency ... and full waveform inversion (FWI) on synthetic crosswell seismic data with dominant …

http://gradfaculty.usciences.edu/Book/gov/bayesian-wavelet-estimation-from-seismic-and-well-data.pdf?sequence=1&editionsView=true the brisge rca vinyl reissueWebApr 1, 2024 · The procedure of Gaussian beam migration can be divided into three steps: decompose the seismic data into a Gaussian beam form; downward continue each … the brisky girls all about meWebJun 19, 2024 · Abstract. Missing traces complicate the seismic data processing and may cause difficulty in geological interpretation. We present a simple but efficient normalized … tarzan boys jungle lifeWebNov 1, 1990 · Just as synthetic seismic data can be created by expressing the wave field radiating from a seismic source as a set of Gaussian beams, recorded data can be … tarzan boy lyrics 1986http://mpe.dimacs.rutgers.edu/2013/08/22/gaussian-beams/ tarzan boy song lyricsWebMay 14, 2024 · The combination of Gaussian beam seismic data reconstruction and migration extends the research field of Gaussian beam migration, which has an … tarzan boy songfactsWebWith the dramatic growth of seismic data volume, efficient and accurate seismic source location has become a significant challenge to seismologists. Recently, time reversal … tarzan boy jungle boy aew