Gaussian beam reconstruction of seismic data

Author: xxjf

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. 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 …

Gaussian Beam Migration for Free-Surface Multiples in VSP

http://gradfaculty.usciences.edu/Book/gov/bayesian-wavelet-estimation-from-seismic-and-well-data.pdf?sequence=1&editionsView=true 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 … tabithaland

Depth migration by the Gaussian beam summation method

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 … 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 … 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 … tabithaofsky

Gaussian beam migration GEOPHYSICS

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. 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 … tabithalubui gmail.comWebMay 14, 2024 · The combination of Gaussian beam seismic data reconstruction and migration extends the research field of Gaussian beam migration, which has an … tabithaross2

"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 … " - Gaussian beam reconstruction of seismic data

Gaussian beam reconstruction of seismic data

Frozen Gaussian approximation for 3D seismic …

WebSparse Gaussian beam decomposition and reconstruction is an ill-posed inverse problem. We construct a zero-norm constrained minimisation model, develop a dip-angle scanning strategy and adopt a quasi-Newton … 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.

Did you know?

WebAs the demand for ore resources increases, the target for mineral exploration gradually shifts from shallow to deep parts of the Earth (>1 km). However, for the ore-hosting strata, it is difficult to obtain high-resolution images by using the electromagnetic method. Seismic full waveform inversion (FWI) is an optimization algorithm which aims at minimizing the … 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 …

WebJan 1, 2024 · Gaussian beam migration is based on an overcomplete frame-based representation of the seismic wave field and uses localized slant-stack windows of the …

WebApr 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 Gaussian beam into the subsurface; and obtain an image based on the imaging conditions. ... Gaussian beam sparse decomposition and reconstruction with noise seismic data. … 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 …

Weband 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

WebAug 8, 2024 · Afterward, Gaussian beam depth migration is performed on the reconstructed data. Finally, we analyze the reconstruction results under the circumstance of seismic data with randomly missing traces. Numerical tests indicate that for data with missing … tabithamcnulty icloud.comWebABSTRACT We have developed a new Gaussian beam reconstruction algorithm using time-domain Gaussian beam (TGB) method to decompose seismic data. The TGB is … tabithap twocollegemovers.comhttp://mpe.dimacs.rutgers.edu/2013/08/22/gaussian-beams/ tabitharunsWebMar 16, 2024 · 1 INTRODUCTION. Cone beam computed tomography (CBCT) is an established three-dimensional (3D) radiographic imaging technique. Introduced in dental imaging in the late 1990s, 1, 2 the technique is now also widely used in other medical disciplines. 3-6 Owing to the implementation of flat-panel detectors as image receptors … tabithamwiti57 gmail.comWebOct 13, 2024 · Seismic tomography solves high-dimensional optimization problems to image subsurface structures of Earth. In this paper, we propose to use random batch … tabithas beauty oasisWebApr 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 … tabithas fairfield ctWebApr 14, 2024 · The reconstruction is consistent with the circuit’s design file. ... MLEM and summing the energy bands from 4.9 keV to 5.9 keV and 9.2 keV to 9.5 keV with 100 iterations and 1 pixel Gaussian ... tabithas house bel air