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Description: 利用射线追踪法实现地震波场层析成像.在石油行业中,此过程是地震资料应用的一个重要步骤-The use of ray tracing method to achieve seismic wavefield tomography. In the oil industry, this process is the application of seismic data as an important step
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Size: 352256 |
Author: yaoweiyi |
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Description: 利用matlab分析地震波场速度特征,是进行速度建模的基础-Matlab analysis of the use of the speed of seismic wavefield characteristics, speed of modeling is the basis of
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Size: 8192 |
Author: yaoweiyi |
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Description: We consider a complex-valued wavefield reconstruction in an object plane from data in a sensor plane. A digital modeling for the forward propagation is presented in the algebraic matrix form M-DDT. The inverse propagation is formalized as an inverse problem.
The main algorithm of the complex-valued wavefield reconstruction with the proposed Matrix Discrete Diffraction Transform (M-DDT) is prepared as a Matlab demo.
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Size: 398336 |
Author: mythu |
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Description: 基于GaborDaubechies小波束域波场外推的散射系数矩阵的计算及其应用-CONSTRUCTION AND APPLICATION OF LOCAL SCATTERING MATRIX BASED ON WAVEFIELD EXTRAPOLATION IN THE GABOR-DAUBECHIES BEAMLET DOMAIN
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Size: 421888 |
Author: 里路诺 |
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Description: 利用位移-速度-应力交错网格有限差分方法进行一维粘弹性介质地震波场生成和模拟，对于做波场模拟的同学有很好的参考价值，更详细的介绍见英文描述。-The Fortran95 Computer Code for Finite-Difference Numerical Generation and Simulation of a 1D Seismic Wavefield in a 1D Heterogeneous Viscoelastic Medium Using the Displacement-Velocity-Stress Staggered-Grid Finite-Difference Scheme
The program 1DFD_DVS performs FD computations according to the displacement-velocity-stress staggered-grid FD scheme for a 1D wavefield in a 1D heterogeneous viscoelastic medium.
Two other programs,
• program MODEL_PREP_1D,
• program SOURTF,
perform the model and source-time function preparation as input data for the computational program 1DFD_DVS.
The medium can be bounded from one side (in the programs it is the upper horizontal plane z=0) by either of the following boundaries:
• free surface (traction-free condition),
• plane of symmetry,
• rigid boundary,
• nonreflecting boundary (several types).
The medium can be bounded from the other side (the bottom horizontal plane z=z_max>0 ) by
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Size: 3296256 |
Author: skyey |
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Description: 基于模式耦合方法建立三维面波传播模型，该代码对于做波场模拟的同学很有用。-This program calculates the wavefield produced by a monochromatic surface wave mode incoming on a 3D cartesian structure. It is based on mode coupling and multiple scattering.
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Size: 3712000 |
Author: skyey |
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Description: 将t-x域地震数据变换到tau-p域 用于VSP的波场分离-The tx domain seismic data is transformed to the tau-p domain for VSP wavefield separation
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Size: 2048 |
Author: zhengru |
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Description: 模拟地震波在一层均匀介质地质模型中传播的波场-Wavefield simulations of seismic wave propagation in a uniform layer of medium geological model
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Size: 1024 |
Author: zhengru |
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Description: 这个程序是用C语言写的地震波的正演模拟程序，最后绘图时调用了matlab引擎，直接在c环境下绘制波场图。-This program is a seismic wave forward modeling program written in C language, last call matlab drawing engine wavefield Figure drawn directly c environment.
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Size: 2048 |
Author: 谢远 |
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Description: initialize the velocity field for deep water
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Size: 1024 |
Author: TW |
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Description: 产生一个三分量地震图，有助于理解近场和远场的波场形态-Helps to understand the the wavefield morphology of the near-field and far-field to generate a three-component seismograms,
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Size: 1024 |
Author: An Shengpei |
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Description: Elastography is an imaging modality of Young’s Modulus of a biological medium (breast,
liver,. . . ). It consists of vibrating a medium and infer from the observed wavefield the distribution of
elasticity. The displacement field is observed in the all volume.
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Size: 387072 |
Author: kirsch |
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Description: Theory of large2step wavefield depth extrapolation
Wavefield extrapolation is the foundation of seismic migration imaging. Finding a way of quick and
object oriented wavefield extrapolation is significant not only for deep seismic exploration but also for imaging
with super2tremendous seismic data acquired non2combination receivers , both highly needed to develop in
petroleum prospecting. To image target zones , as far as all present wavefield extrapolation methods are
concerned , including travel2time based Dix2formula methods , ray tracing , small2step depth recursion-Theory of large2step wavefield depth extrapolation
Wavefield extrapolation is the foundation of seismic migration imaging. Finding a way of quick and
object oriented wavefield extrapolation is significant not only for deep seismic exploration but also for imaging
with super2tremendous seismic data acquired non2combination receivers , both highly needed to develop in
petroleum prospecting. To image target zones , as far as all present wavefield extrapolation methods are
concerned , including travel2time based Dix2formula methods , ray tracing , small2step depth recursion
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Size: 772096 |
Author: txd |
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Description: Detection of buried landmines by ground penetrating radar (GPR) normally
suffers very strong clutter that will decrease the image quality in
GPR data. Problems are also encountered when imaging steeply dipping
landmines by GPR. To solve these problems, we have developed a steppedfrequency
continuous-wave array antenna ground penetrating radar system,
called SAR-GPR, that can acquire common middle point multi-offset data. As
an approximate solution to the general wavefield inversion problem, migration
algorithms were used to refocus the scattered landmine information to improve
signal–clutter ratio and re-construct the landmine image. Also, pre-stack
migration was found to efficiently deal with the steeply dipping landmine
problem-Detection of buried landmines by ground penetrating radar (GPR) normally
suffers very strong clutter that will decrease the image quality in
GPR data. Problems are also encountered when imaging steeply dipping
landmines by GPR. To solve these problems, we have developed a steppedfrequency
continuous-wave array antenna ground penetrating radar system,
called SAR-GPR, that can acquire common middle point multi-offset data. As
an approximate solution to the general wavefield inversion problem, migration
algorithms were used to refocus the scattered landmine information to improve
signal–clutter ratio and re-construct the landmine image. Also, pre-stack
migration was found to efficiently deal with the steeply dipping landmine
problem
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Size: 1542144 |
Author: senthil |
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Description: 二维波场模拟程序，使用pml边界条件生成波场(Two dimensional wave field simulation program using PML boundary condition)
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Size: 7168 |
Author: xingtong |
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