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A two-way nonreflecting wave equation
Geophysics, 1984Abstract Highly reduced reflection coefficients for transmission across material boundaries. For homogeneous regions of space, however, this wave equation becomes identical to the full acoustic wave equation. Possible applications of this wave equation for forward modeling and for migration are illustrated with simple models ...
Edip Baysal +2 more
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One Way vs Two Way Wave Equation Imaging – Is Two-Way Worth It?
65th EAGE Conference & Exhibition, 2003Currentproductio n-grade-wave-equationmigrationte chnologyisalmost totallybasedon one-way methods. These methods are typically derived through an asymptotic approximation of the square root of a one-way propagator derived by factoriaztion of some form of wave equation.
J.B. Bednar, K. Yoon, C. Shin, L. Lines
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One‐way and two‐way wave‐equation migration
SEG Technical Program Expanded Abstracts 2003, 2003We present a comparison of results for wave-equation migration in the frequency domain using the constantdensity acoustic “two-way” wave equation and its one-way approximation. The examples are based on synthetic and real data for a two-dimensional spatial geometry.
W. A. Mulder, R.‐E. Plessix
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Image‐domain waveform tomography with two‐way wave‐equation
SEG Technical Program Expanded Abstracts 2011, 2011We propose an image-domain velocity model building method using the two-way wave equation and extended seismic images. We show that common-image-point gathers can effectively extract velocity information from steep reflections imaged with the two-way wave propagator.
Tongning Yang, Paul Sava
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The One-Way Wave Equation: A Full-Waveform Tool for Modeling Seismic Body Wave Phenomena [PDF]
Surveys in Geophysics, 2013 The study of seismic body waves is an integral aspect in global, exploration and engineering scale seismology, where the forward modeling of waves is an essential component in seismic interpretation.
Doug Angus
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A TWO WAY SEMI-IMPLICIT SCHEME FOR SHALLOW WATER WAVE EQUATIONS
ISH Journal of Hydraulic Engineering, 1997ABSTRACT A 2D hydrodynamic model which is implicit in two coordinate directions has been developed for tidal propagation studies in rivers, coastal areas and seas. The coefficient matrix of the linear equation formed in this model becomes sparse and the equations are required to be solved by an iterative technique, such as the method of successive ...
L. K. Ghosh, S. Balakrishna, C. B. Singh
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Two-way wave equation depth migration using one-way propagator extrapolation
Exploration Geophysics, 2022Two-way wave depth migration (TWDM) can achieve a wider imaging angle in media with significant lateral velocity changes and better imaging results for complex structures with high dip angles than ...
Anyu Li, Xuewei Liu
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Resolution analysis for targeted illumination using two‐way wave‐equations
SEG Technical Program Expanded Abstracts 2010, 2010Recent advances in imaging prestack seismic data, in particular, more accurate migration algorithms such as reverse-time migration (RTM), have made higher-quality images possible. However, tools to understand the factors affecting the quality of the results such as illumination are not readily available.
Cintia Lapilli +3 more
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𝐿² stable discontinuous Galerkin methods for one-dimensional two-way wave equations
Mathematics of Computation, 2016Simulating wave propagation is one of the fundamental problems in scientific computing. In this paper, we consider one-dimensional two-way wave equations, and investigate a family of L
Yingda Cheng +3 more
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Automatic Velocity Analysis with the Two-way Wave Equation
70th EAGE Conference and Exhibition incorporating SPE EUROPEC 2008, 2008Migration velocity analysis constructs a velocity model by focusing a migration image in terms of a redundant coordinate, for instance surface offset or a shift at depth between forward and time-reversed wavefield. The latter option is considered here in the context of two-way wave equation modelling with a frequency-domain finite-difference code ...
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