Modeling 3‐D Scalar Waves Using the Fourier Finite‐Difference Method

Zhang, Jin‐Hai; Wang, Weimin; Zhao, Lan; Yao, Zhen‐Xing

doi:10.1002/cjg2.1181

Cited by 4 publications

(3 citation statements)

References 25 publications

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“…For 3D pre-stack seismic data image, although pre-stack depth migration has been improved greatly and steps into the stage of production and application widely [14,15] , Kirchhoff integral pre-stack time migration is still an effective method because of its flexibility and efficient. So called "efficient" is by comparison with the time consumption of pre-stack depth migration.…”

Section: Resultsmentioning

confidence: 99%

A Method of Using GPU to Accelerate Seismic Pre‐Stack Time Migration

Li¹,

Li²,

Liu³

2009

Chinese J of Geophysics

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General Purpose GPU technology is becoming mature, it has been applied in many industry areas. However, due to the differences of computing ability between CPU and GPU, the study of GPU in petroleum industry application should be developed effectively. In this article, we introduce the General Purpose GPU technology and propose a method to realize pre‐stack time migration software on GPU. Compared with traditional pre‐stack time migration running on Personal Computer (PC) or PC‐Cluster, the new programming method greatly improves computational efficiency, and then dramatically save computing and maintenance cost. The actual tests with real seismic data illustrate that high performance computing based on General Purpose GPU technology (GPGPU) is an important direction of developments to meet the requirements of large scale computing in petroleum industry.

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Section: Resultsmentioning

confidence: 99%

A Method of Using GPU to Accelerate Seismic Pre‐Stack Time Migration

Li¹,

Li²,

Liu³

2009

Chinese J of Geophysics

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“…Freed and Lin (2001) utilized a viscoelastic finite element model to calculate coseismic and postseismic Coulomb stress changes associated with the 1992 Landers earthquake sequence, providing a valuable understanding of the delayed triggering of the 1999 Hector Mine earthquake. Zhang et al (2015) employed a 3D finite element program based on the equivalent physical force method of seismic dislocation to investigate coseismic deformation in a spherical Earth model. and Wang et al (2021) adopted the finite element method to analyze both coseismic and postseismic deformation of the 2008 Wenchuan earthquake.…”

Section: Introductionmentioning

confidence: 99%

Crustal heterogeneity effects on coseismic deformation: numerical simulation of the 2008 MW 7.9 Wenchuan earthquake

Shi,

Meng,

et al. 2023

Front. Earth Sci.

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Coseismic deformation of large earthquakes causes significant property damages and fatalities, which requires quantitative research of multiple disciplines such as geodesy, geological investigation, seismic tomography, and seismic dislocation theory. The finite element method accounts for material heterogeneity and geometric complexity, making it suitable for studying the coseismic deformation of large earthquakes. This paper develops a parallel elastic finite element program that utilizes split nodes and high-performance parallel computing technology on the FELAC software platform to study the coseismic deformation of large earthquakes. We verify the accuracy of the parallel elastic finite element program by comparing its results with the analytical solutions from seismic dislocation theory for four ideal earthquake cases. Finally, we established parallel elastic finite element models to study the coseismic deformation of the 2008 Wenchuan earthquake. The simulation results are consistent with the GPS and InSAR data. Coseismic surface deformation results are significantly influenced by medium regional heterogeneity with different layered structures besides the Longmenshan fault. The finite element program lay the foundation for the inversion of the coseismic fault rupture process based on the heterogeneous medium model and complex geometric model.

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“…While the two-way splitting technique affords high computational efficiency, it introduces extensive phase errors, the so-called azimuthal anisotropy or splitting error. Zhang (2007) introduced alternating-direction-implicit-plus-interpolation (ADIPI) method to solve the problem by preserving the alternating item which has been ignored in conventional two-way splitting and interpolating in wave number domain to remove the splitting error [19,20] .…”

Section: Introductionmentioning

confidence: 99%

Xwfd Preserved‐Amplitude Migration with Dual‐Complexity

Ye¹,

Li²,

Zhao-qi³

et al. 2008

Chinese J of Geophysics

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Oil and gas exploration is turning to the areas with irregular topography and complex geologic structures. Prestack depth migration turns out to be a valid way to deal with irregular topography and complex geologic structures. "Wave field downward continuation" based on accumulating step by step is a valid way to solve the problem of irregular surface migration. Xwfd pre-stack migration based on wave equation has strong adaptability to the medium which has strongly variable transverse velocity and it can be used for migration with dual-complexity. Similar to other conventional migration, it makes just continuation of phase and does nothing to the amplitude. We derived the preserved-amplitude Xwfd one-way wave equation operator and added the error compensation caused when solving the wave equation. Based on the Xwfd error compensation preservedamplitude operator, we use the method of "wave field downward continuation" to process the dual-complexity model and real seismic data. The impulse response test and results of the prestack depth migration for model and real seismic data show that the method is an effective tool for dual-complexity. The error compensation can be done during several continuation steps, compared to conventional Finite Difference Fourier (ffd) it has better migration quality.

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Modeling 3‐D Scalar Waves Using the Fourier Finite‐Difference Method

Cited by 4 publications

References 25 publications

A Method of Using GPU to Accelerate Seismic Pre‐Stack Time Migration

A Method of Using GPU to Accelerate Seismic Pre‐Stack Time Migration

Crustal heterogeneity effects on coseismic deformation: numerical simulation of the 2008 MW 7.9 Wenchuan earthquake

Xwfd Preserved‐Amplitude Migration with Dual‐Complexity

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