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Google Keyword Rankings for : 3d finite difference reflection travel times
1
Finite-difference calculation of traveltimes in 3D - ResearchGate
https://www.researchgate.net/publication/215755725_Finite-difference_calculation_of_traveltimes_in_3D
Abstract. The traveltimes of first arriving seismic rays through most velocity structures can be computed rapidly on a three-dimensional ...
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https://www.researchgate.net/publication/215755725_Finite-difference_calculation_of_traveltimes_in_3D
Abstract. The traveltimes of first arriving seismic rays through most velocity structures can be computed rapidly on a three-dimensional ...
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2
3-D finite-difference reflection travel times - Semantic Scholar
https://www.semanticscholar.org/paper/3-D-finite-difference-reflection-travel-times-Hole-Zelt/cd05f3d0ccaaba54e132280721702540fa785bf7
SUMMARY A method has been developed to compute seismic reflection traveltimes in complex 3-D velocity models with complex 3-D reflector ...
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https://www.semanticscholar.org/paper/3-D-finite-difference-reflection-travel-times-Hole-Zelt/cd05f3d0ccaaba54e132280721702540fa785bf7
SUMMARY A method has been developed to compute seismic reflection traveltimes in complex 3-D velocity models with complex 3-D reflector ...
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3
Accurate 3-D finite difference computation of traveltimes in ...
https://academic.oup.com/gji/article/199/3/1572/618863
We present a new massively parallel method for computation of first arrival times in arbitrary velocity models. An implementation on conventional sequential ...
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https://academic.oup.com/gji/article/199/3/1572/618863
We present a new massively parallel method for computation of first arrival times in arbitrary velocity models. An implementation on conventional sequential ...
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4
3‐D finite‐difference reflection travel times - Hole - 1995
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-246X.1995.tb05723.x?utm_sq=grq7sdtfar
A method has been developed to compute seismic reflection traveltimes in complex 3-D velocity models with complex 3-D reflector geometry.
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https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-246X.1995.tb05723.x?utm_sq=grq7sdtfar
A method has been developed to compute seismic reflection traveltimes in complex 3-D velocity models with complex 3-D reflector geometry.
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5
Three-dimensional finite-difference reflection travel times - 百度学术
https://xueshu.baidu.com/usercenter/paper/show?paperid=2b1bf1d62e87a5abf523dc5291d2cbd5
Reflection traveltimes are computed simultaneously for all revivers, requiring only two applications of the finite-difference algorithm for each shot.
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https://xueshu.baidu.com/usercenter/paper/show?paperid=2b1bf1d62e87a5abf523dc5291d2cbd5
Reflection traveltimes are computed simultaneously for all revivers, requiring only two applications of the finite-difference algorithm for each shot.
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6
Finite-difference modeling of 3D seismic wave propagation in ...
https://www.osti.gov/servlets/purl/1145831
It is emphasized that these instabilities (i.e., unbounded numerical growth in wavefield variables with increasing time) are not generated by any violation of ...
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https://www.osti.gov/servlets/purl/1145831
It is emphasized that these instabilities (i.e., unbounded numerical growth in wavefield variables with increasing time) are not generated by any violation of ...
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7
3D finite-difference time-domain modeling of acoustic wave ...
http://www.mathmods.eu/resources/downloads/uns/finish/24-uns/75-garcia-report
3.3 The Finite Difference Discretization of the 3D Acoustic Wave Equation . ... The travel times (usually measured in milliseconds) of the ...
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http://www.mathmods.eu/resources/downloads/uns/finish/24-uns/75-garcia-report
3.3 The Finite Difference Discretization of the 3D Acoustic Wave Equation . ... The travel times (usually measured in milliseconds) of the ...
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8
3D marine magnetotelluric modeling and inversion with the ...
https://library.seg.org/doi/10.1190/geo2014-0110.1
Modeling results obtained using our finite-difference time-domain algorithm are compared with results obtained using an integral equation method. The agreement ...
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https://library.seg.org/doi/10.1190/geo2014-0110.1
Modeling results obtained using our finite-difference time-domain algorithm are compared with results obtained using an integral equation method. The agreement ...
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9
US5999488A - Method and apparatus for migration by finite ...
https://patents.google.com/patent/US5999488
Accordingly, an object of the present invention is to eliminate reflections from artificial boundaries in 3D finite-difference acoustic wave equation ...
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https://patents.google.com/patent/US5999488
Accordingly, an object of the present invention is to eliminate reflections from artificial boundaries in 3D finite-difference acoustic wave equation ...
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10
Untitled
https://hal.archives-ouvertes.fr/tel-01782404v2/html_references
D. Hole and B. Zelt, 3-D finite difference reflection traveltimes, Geophysical Journal International, vol.121, pp.427-434, 1995.
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https://hal.archives-ouvertes.fr/tel-01782404v2/html_references
D. Hole and B. Zelt, 3-D finite difference reflection traveltimes, Geophysical Journal International, vol.121, pp.427-434, 1995.
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11
Simulating Seismic Wave Propagation in 3D Elastic Media ...
https://web.gps.caltech.edu/~clay/Ge263/Graves1996.pdf
grid finite-difference technique to model wave propagation problems in 3D elastic ... caded time update procedure is utilized to maximize the number of ...
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https://web.gps.caltech.edu/~clay/Ge263/Graves1996.pdf
grid finite-difference technique to model wave propagation problems in 3D elastic ... caded time update procedure is utilized to maximize the number of ...
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12
A non-reflecting wave equation through directional wave-field ...
https://www.nature.com/articles/s41598-021-04064-3
This modified theory is implemented using a staggered-grid, time-domain finite difference scheme, where the acoustic Poynting-vector is used ...
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https://www.nature.com/articles/s41598-021-04064-3
This modified theory is implemented using a staggered-grid, time-domain finite difference scheme, where the acoustic Poynting-vector is used ...
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13
Heading Seismic wavefront tracking in 3D heterogeneous media
http://rses.anu.edu.au/~malcolm/papers/pdf/nickeg2006.pdf
use of spherical coordinates allows wavefronts and traveltimes to ... finite-difference solution of the eikonal equation (e.g., Vidale,.
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http://rses.anu.edu.au/~malcolm/papers/pdf/nickeg2006.pdf
use of spherical coordinates allows wavefronts and traveltimes to ... finite-difference solution of the eikonal equation (e.g., Vidale,.
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14
Application of finite difference eikonal solver for traveltime ...
https://gsm.org.my/products/702001-101918-PDF.pdf
traveltimes will give a significant impact on enhancing the output of ... Keywords: Reflection, traveltime, forward modeling, ray tracing, ...
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https://gsm.org.my/products/702001-101918-PDF.pdf
traveltimes will give a significant impact on enhancing the output of ... Keywords: Reflection, traveltime, forward modeling, ray tracing, ...
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15
Short Note Segmentally Iterative Ray Tracing in Complex 2D ...
http://sourcedb.igg.cas.cn/cn/zjrck/200907/W020161101730170135906.pdf
explicit analytical travel time between two intersection points expressed as a ... ing in complex 2D and 3D heterogeneous media. ... 3-D seismic reflection.
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http://sourcedb.igg.cas.cn/cn/zjrck/200907/W020161101730170135906.pdf
explicit analytical travel time between two intersection points expressed as a ... ing in complex 2D and 3D heterogeneous media. ... 3-D seismic reflection.
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16
2-D fast sweeping method for the factored Eikonal equation ...
https://www.sciencedirect.com/science/article/abs/pii/S0926985118300326
However, plane wavefront assumption is adopted when calculating traveltimes by use of finite-difference scheme. Therefore, source singularity problem exists ...
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https://www.sciencedirect.com/science/article/abs/pii/S0926985118300326
However, plane wavefront assumption is adopted when calculating traveltimes by use of finite-difference scheme. Therefore, source singularity problem exists ...
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17
Accurate seabed modeling using finite difference methods
https://link.springer.com/article/10.1007/s10596-017-9705-5
Numerical tests demonstrate that this method generates reflections with accurate travel times and effectively suppresses artificial diffractions ...
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https://link.springer.com/article/10.1007/s10596-017-9705-5
Numerical tests demonstrate that this method generates reflections with accurate travel times and effectively suppresses artificial diffractions ...
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18
Mathematical representation models and applications on ...
https://hrcak.srce.hr/file/65041
Seismic travel time tomography can be defined as the ... Hole, J.A., and Zelt, B.C., 3D finite-difference reflection travel times, Geo-.
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https://hrcak.srce.hr/file/65041
Seismic travel time tomography can be defined as the ... Hole, J.A., and Zelt, B.C., 3D finite-difference reflection travel times, Geo-.
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19
Understanding the Finite-Difference Time-Domain Method
https://eecs.wsu.edu/~schneidj/ufdtd/ufdtd.pdf
7.6 Analytic FDTD Reflection and Transmission Coefficients . ... The specific equations on which the finite-difference time-domain (FDTD) method is based ...
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https://eecs.wsu.edu/~schneidj/ufdtd/ufdtd.pdf
7.6 Analytic FDTD Reflection and Transmission Coefficients . ... The specific equations on which the finite-difference time-domain (FDTD) method is based ...
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20
A 3D reflection ray-tracing method based on linear traveltime ...
http://dreamdata.sinoprobe.org/bitstream/20.500.11759/1662/1/A%203D%20reflection%20ray-tracing%20method%20based%20on%20linear%20traveltime%20perturbation%20interpolation.pdf
as the difference between the original and reference traveltimes, is ... gorithm in a 3D finite-difference computation, which combines a.
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http://dreamdata.sinoprobe.org/bitstream/20.500.11759/1662/1/A%203D%20reflection%20ray-tracing%20method%20based%20on%20linear%20traveltime%20perturbation%20interpolation.pdf
as the difference between the original and reference traveltimes, is ... gorithm in a 3D finite-difference computation, which combines a.
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21
implementation of a pseudo-bending seismic travel-time ...
https://l2a.ucsd.edu/local/Meetings/2008_MRR/PAPERS/02-02.PDF
receiver travel times though the proposed 3D velocity structures. This is a complicated and ... 3D finite-difference reflection traveltimes, Geophys.
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https://l2a.ucsd.edu/local/Meetings/2008_MRR/PAPERS/02-02.PDF
receiver travel times though the proposed 3D velocity structures. This is a complicated and ... 3D finite-difference reflection traveltimes, Geophys.
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22
O3-3 - Balkan Geophysical Society
http://www.balkangeophysoc.gr/menu/congresses/oral/10-11-O3-3-soupios-pantelis.PDF
We solved the forward problem by using a finite-difference algorithm for calculating reflection traveltimes in complex 3D velocity models with complex 3D ...
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http://www.balkangeophysoc.gr/menu/congresses/oral/10-11-O3-3-soupios-pantelis.PDF
We solved the forward problem by using a finite-difference algorithm for calculating reflection traveltimes in complex 3D velocity models with complex 3D ...
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23
Microseismic P-Wave Travel Time Computation and 3D ...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8434019/
The travel time computation of microseismic waves in different directions (particularly, the diagonal direction) in three-dimensional space ...
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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8434019/
The travel time computation of microseismic waves in different directions (particularly, the diagonal direction) in three-dimensional space ...
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24
Reflection time-distance plots • Moveout
http://appliedgeophysics.berkeley.edu/seismic/seismic_723.pdf
range from full 3 dimensional (3D) finite element or finite difference ... adopted a general ray tracing program for creating travel time curves. This.
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http://appliedgeophysics.berkeley.edu/seismic/seismic_723.pdf
range from full 3 dimensional (3D) finite element or finite difference ... adopted a general ray tracing program for creating travel time curves. This.
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25
Validation of first-order diffraction theory for the traveltimes ...
http://www.geo.uu.nl/~jeannot/JTweb/pdfs/geophysics06-ff.pdf
and a reflection experiment. INTRODUCTION. The characteristics of finite-frequency waves propagating in het- erogeneous media are fundamentally different ...
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http://www.geo.uu.nl/~jeannot/JTweb/pdfs/geophysics06-ff.pdf
and a reflection experiment. INTRODUCTION. The characteristics of finite-frequency waves propagating in het- erogeneous media are fundamentally different ...
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26
arXiv:2201.05278v1 [cs.CE] 14 Jan 2022
https://arxiv.org/pdf/2201.05278
simwave - A Finite Difference Simulator for Acoustic Waves Propagation ... waves travel with a characteristic velocity and exhibit phenomena ...
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https://arxiv.org/pdf/2201.05278
simwave - A Finite Difference Simulator for Acoustic Waves Propagation ... waves travel with a characteristic velocity and exhibit phenomena ...
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27
Migrated Exploding Reflectors in Evaluation of Finite ...
https://www.scirp.org/html/4-8101758_26074.htm
Wave equation numerical method can extract the information of both travel time and amplitude of seismic wave and can explain wave propagation in complicated ...
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https://www.scirp.org/html/4-8101758_26074.htm
Wave equation numerical method can extract the information of both travel time and amplitude of seismic wave and can explain wave propagation in complicated ...
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28
Geophysical Journal International
https://people.earth.yale.edu/sites/default/files/melendez15.pdf
tial guess to avoid local minima in traveltimes and converges to ... and finite-differences eikonal equation solvers (Vidale 1988; Kim.
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https://people.earth.yale.edu/sites/default/files/melendez15.pdf
tial guess to avoid local minima in traveltimes and converges to ... and finite-differences eikonal equation solvers (Vidale 1988; Kim.
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29
Viscoelastic modeling and factor Q for reflection data
http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0016-71692012000400006
For obtaining the synthetic seismograms, a new 3D numerical model of wave propagation ... where u - the same variable that is in the finite-difference time ...
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http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0016-71692012000400006
For obtaining the synthetic seismograms, a new 3D numerical model of wave propagation ... where u - the same variable that is in the finite-difference time ...
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30
3D Seismic Traveltime Tomography Validation of a Detailed ...
https://se.copernicus.org/preprints/se-2018-85/se-2018-85-manuscript-version4.pdf
Half million traveltime picks were inverted to provide the 3D seismic velocity ... Hole, J.A., and Zelt, C.: 3D finite differences reflection traveltimes.
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https://se.copernicus.org/preprints/se-2018-85/se-2018-85-manuscript-version4.pdf
Half million traveltime picks were inverted to provide the 3D seismic velocity ... Hole, J.A., and Zelt, C.: 3D finite differences reflection traveltimes.
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31
2-D/3-D multiply transmitted, converted and reflected arrivals ...
https://adsabs.harvard.edu/full/2009GeoJI.179..201B
The first method is the finite difference (FD) eikonal equation solver (Vidale ... The traveltimes ofthe primary reflection were calculated at each receiver ...
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https://adsabs.harvard.edu/full/2009GeoJI.179..201B
The first method is the finite difference (FD) eikonal equation solver (Vidale ... The traveltimes ofthe primary reflection were calculated at each receiver ...
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32
Earthquake locations by 3-D finite-difference travel times
https://pubs.geoscienceworld.org/ssa/bssa/article/80/2/395/102477/Earthquake-locations-by-3-D-finite-difference
For the examples presented, the computation time per event is approximately 4 times slower than HYPOINVERSE, but the computation time for ...
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https://pubs.geoscienceworld.org/ssa/bssa/article/80/2/395/102477/Earthquake-locations-by-3-D-finite-difference
For the examples presented, the computation time per event is approximately 4 times slower than HYPOINVERSE, but the computation time for ...
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33
Finite Difference Modeling of Attenuation and Anisotropy
https://core.ac.uk/download/pdf/4432166.pdf
A finite difference scheme which includes the effects of attenuation and anisotropy is ... In addition, the traveltimes of the reservoir bottom reflections.
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https://core.ac.uk/download/pdf/4432166.pdf
A finite difference scheme which includes the effects of attenuation and anisotropy is ... In addition, the traveltimes of the reservoir bottom reflections.
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34
First-arrival tomography with fast sweeping method solving the ...
https://par.nsf.gov/servlets/purl/10106845
2D and 3D factored FSMs to provide more accurate traveltimes in velocity inversion. ... method and finite-difference based eikonal solver.
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https://par.nsf.gov/servlets/purl/10106845
2D and 3D factored FSMs to provide more accurate traveltimes in velocity inversion. ... method and finite-difference based eikonal solver.
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35
Kirchhoff Migration
http://www.xsgeo.com/course/mig.htm
Some hybrid or pseudo-depth migration algorithms exist which either apply approximations of the thin-lens term (finite difference solution) or attempt to ...
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http://www.xsgeo.com/course/mig.htm
Some hybrid or pseudo-depth migration algorithms exist which either apply approximations of the thin-lens term (finite difference solution) or attempt to ...
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36
Second-order Central Difference Finite-difference Wave ...
https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20221105.16.pdf
In this paper, a simple finite-difference approach for extrapolating ... of the locus of the reflection travel time increases with offset, ...
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https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20221105.16.pdf
In this paper, a simple finite-difference approach for extrapolating ... of the locus of the reflection travel time increases with offset, ...
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37
Computation of multivalued traveltimes in three-dimensional ...
https://d-nb.info/969780001/34
For a 3D PKDM the efficiency of traveltime computation is essential (Yilmaz, 2001). The computation of traveltimes by finite-difference (FD) eikonal solvers ...
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https://d-nb.info/969780001/34
For a 3D PKDM the efficiency of traveltime computation is essential (Yilmaz, 2001). The computation of traveltimes by finite-difference (FD) eikonal solvers ...
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38
An overview of full-waveform inversion in exploration ...
http://seisweb.usask.ca/classes/GEOL898/2020/WWW/Virieux_Operto_FWI_overview_Geophysics2009.pdf
time and frequency domains is the finite-difference method ... reflections, will match the true reflection traveltimes with an error.
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http://seisweb.usask.ca/classes/GEOL898/2020/WWW/Virieux_Operto_FWI_overview_Geophysics2009.pdf
time and frequency domains is the finite-difference method ... reflections, will match the true reflection traveltimes with an error.
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39
Review of tomographic methods - CREWES
https://www.crewes.org/Documents/ResearchReports/2019/CRR201938.pdf
Classical reflection travel-time tomography can accurately estimate the subsurface ... blue) agree with the finite difference modelled data.
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https://www.crewes.org/Documents/ResearchReports/2019/CRR201938.pdf
Classical reflection travel-time tomography can accurately estimate the subsurface ... blue) agree with the finite difference modelled data.
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40
Improving the Use of Depth Phases in Routine Estimates of Depth ...
https://earthquake.usgs.gov/cfusion/external_grants/reports/G11AP20195.pdf
analysis we can use the 3D finite difference model described in the next section. ... reflection corresponds to the one with lowest travel time.
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https://earthquake.usgs.gov/cfusion/external_grants/reports/G11AP20195.pdf
analysis we can use the 3D finite difference model described in the next section. ... reflection corresponds to the one with lowest travel time.
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41
Successful application of joint reflection/refraction ...
https://www.tandfonline.com/doi/pdf/10.1071/ASEG2013ab036
first arrival travel time tomography) helps to produce more accurate and detailed depth velocity ... Then we employ 3D finite-difference wave-equation.
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https://www.tandfonline.com/doi/pdf/10.1071/ASEG2013ab036
first arrival travel time tomography) helps to produce more accurate and detailed depth velocity ... Then we employ 3D finite-difference wave-equation.
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42
Travel time computations using a compact eikonal equation ...
https://www.academia.edu/80942231/Travel_time_computations_using_a_compact_eikonal_equation_for_vertical_transverse_isotropic_media?f_ri=409
Over the past few decades, the growing need for fast and accurate prediction of waveform attributes (especially the travel time) in heterogeneous 2D and 3D ...
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https://www.academia.edu/80942231/Travel_time_computations_using_a_compact_eikonal_equation_for_vertical_transverse_isotropic_media?f_ri=409
Over the past few decades, the growing need for fast and accurate prediction of waveform attributes (especially the travel time) in heterogeneous 2D and 3D ...
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43
3D Elastic Finite‐Difference Seismic‐Wave Simulations
https://aip.scitation.org/doi/pdf/10.1063/1.4823348
3D linear elastic finite differences ... Rayleigh waves that travel along the surface ofthe Earth. For ... air-guns in water to look for reflections.
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https://aip.scitation.org/doi/pdf/10.1063/1.4823348
3D linear elastic finite differences ... Rayleigh waves that travel along the surface ofthe Earth. For ... air-guns in water to look for reflections.
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44
Inversion for elliptically anisotropic velocity using VSP ...
https://pangea.stanford.edu/departments/geophysics/dropbox/SWP/publications/Inversion_elliptically_anisotropic.pdf
using a finite-difference method, one for an isotropic model and the other for an ... Forward calculation of VSP reflection traveltimes.
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https://pangea.stanford.edu/departments/geophysics/dropbox/SWP/publications/Inversion_elliptically_anisotropic.pdf
using a finite-difference method, one for an isotropic model and the other for an ... Forward calculation of VSP reflection traveltimes.
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45
1 "Forward and inverse modeling of controlled-source seismic ...
https://www.seismo.helsinki.fi/seismix/Forward-Inverse_Zelt_reference_list.pdf
1D, 2D, 2.5D and 3D considerations ... Hole J A, Zelt B C 1995 Three-dimensional finite-difference reflection travel times. Geophys. J. Int., 121, 427-34.
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https://www.seismo.helsinki.fi/seismix/Forward-Inverse_Zelt_reference_list.pdf
1D, 2D, 2.5D and 3D considerations ... Hole J A, Zelt B C 1995 Three-dimensional finite-difference reflection travel times. Geophys. J. Int., 121, 427-34.
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46
3-D cross-gradient joint inversion of seismic refraction and DC ...
https://leicester.figshare.com/articles/journal_contribution/3-D_cross-gradient_joint_inversion_of_seismic_refraction_and_DC_resistivity_data/10194062/1/files/18368528.pdf
The objective function of 3D cross-gradient joint inversion includes three ... Finite difference computation of seismic travel time is based on the code of ...
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https://leicester.figshare.com/articles/journal_contribution/3-D_cross-gradient_joint_inversion_of_seismic_refraction_and_DC_resistivity_data/10194062/1/files/18368528.pdf
The objective function of 3D cross-gradient joint inversion includes three ... Finite difference computation of seismic travel time is based on the code of ...
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47
Waveform Tomography and its Application at a Ground Water ...
https://scholarship.rice.edu/bitstream/handle/1911/18630/3122471.PDF?sequence=1
Forward modeling in waveform tomography is based on a finite difference solution to ... data and a velocity model from 3D travel time tomography.
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https://scholarship.rice.edu/bitstream/handle/1911/18630/3122471.PDF?sequence=1
Forward modeling in waveform tomography is based on a finite difference solution to ... data and a velocity model from 3D travel time tomography.
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48
Forward modeling of seismic data - AAPG Wiki
https://wiki.aapg.org/Forward_modeling_of_seismic_data
Ray methods usually give very accurate traveltimes and accurate amplitudes for geometric arrivals if the model is sufficiently smooth. These ...
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https://wiki.aapg.org/Forward_modeling_of_seismic_data
Ray methods usually give very accurate traveltimes and accurate amplitudes for geometric arrivals if the model is sufficiently smooth. These ...
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49
Multiscale phase inversion of seismic data
https://ess.sustech.edu.cn/attached/file/20210813/20210813165053_13933.pdf
imates wave-equation traveltime inversion of the reflections, except ... Ali, 2007, 3D finite-difference frequency-domain modeling of visco-.
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https://ess.sustech.edu.cn/attached/file/20210813/20210813165053_13933.pdf
imates wave-equation traveltime inversion of the reflections, except ... Ali, 2007, 3D finite-difference frequency-domain modeling of visco-.
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50
Comparison of finite-difference and ray-theory seismograms in ...
http://sw3d.cz/papers.bin/r15vb1.pdf
Finite-difference seismograms for a selected shot and two receiver ... ceivers are in the depth of 12m and travel times are interpolated from the top ...
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http://sw3d.cz/papers.bin/r15vb1.pdf
Finite-difference seismograms for a selected shot and two receiver ... ceivers are in the depth of 12m and travel times are interpolated from the top ...
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51
Seismic reflection imaging of deep crustal structures via ...
https://earth-planets-space.springeropen.com/articles/10.1186/s40623-022-01590-w
We applied reverse time migration (RTM) to offshore wide-angle seismic ... We implemented wavefield modelling with a finite difference (FD) ...
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https://earth-planets-space.springeropen.com/articles/10.1186/s40623-022-01590-w
We applied reverse time migration (RTM) to offshore wide-angle seismic ... We implemented wavefield modelling with a finite difference (FD) ...
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52
Finite difference methods for wave motion - Various writings
http://hplgit.github.io/num-methods-for-PDEs/doc/pub/wave/pdf/wave-4print-A4-2up.pdf
11 Finite difference methods for 2D and 3D wave equations ... The solution u(x, t) varies in space and time and describes waves that move with velocity c to.
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http://hplgit.github.io/num-methods-for-PDEs/doc/pub/wave/pdf/wave-4print-A4-2up.pdf
11 Finite difference methods for 2D and 3D wave equations ... The solution u(x, t) varies in space and time and describes waves that move with velocity c to.
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53
The effect of crustal anisotropy on reflector depth and velocity ...
https://earth.usc.edu/~okaya/site/research/pdfs/godfrey2002_anisotropy.pdf
finite-difference full-wavefield modelling, the types of errors and problems that might be ... model is used to spatially locate reflection travel times.
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https://earth.usc.edu/~okaya/site/research/pdfs/godfrey2002_anisotropy.pdf
finite-difference full-wavefield modelling, the types of errors and problems that might be ... model is used to spatially locate reflection travel times.
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54
The Precise Finite Difference Method for Seismic Modeling*
http://staff.ustc.edu.cn/~xjia/publications/040201.pdf
case of multiple traveltimes. ... Finite difference method is one of the most common mod- ... Key words: modeling, wave equation, finite difference, ...
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http://staff.ustc.edu.cn/~xjia/publications/040201.pdf
case of multiple traveltimes. ... Finite difference method is one of the most common mod- ... Key words: modeling, wave equation, finite difference, ...
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55
New finite-difference methods for numerical simulation of ...
http://geo.mff.cuni.cz/documents/zamkg_99.htm
Development of the algorithms for two-point ray tracing and travel-time interpolation in 3D media has continued. The first quantitative results have been ...
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http://geo.mff.cuni.cz/documents/zamkg_99.htm
Development of the algorithms for two-point ray tracing and travel-time interpolation in 3D media has continued. The first quantitative results have been ...
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56
Sparse 3D Seismic Imaging in the Kylylahti Mine Area ... - MDPI
https://www.mdpi.com/2075-163X/9/5/305
The traveltimes from the source and receiver locations to the image points are calculated using a finite difference solution of the eikonal equation [32].
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https://www.mdpi.com/2075-163X/9/5/305
The traveltimes from the source and receiver locations to the image points are calculated using a finite difference solution of the eikonal equation [32].
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57
3D Scattering Imaging of Multiscale Geological Media on the ...
https://www.preprints.org/manuscript/201811.0361/v1/download
diffraction/scattering imaging; finite-difference simulation; ... variations of travel-times and an average change of reflection ...
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https://www.preprints.org/manuscript/201811.0361/v1/download
diffraction/scattering imaging; finite-difference simulation; ... variations of travel-times and an average change of reflection ...
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58
Comparison of 3-D Raytracing and Finite Frequency ...
https://jurnal-geofisika.or.id/index.php/jurnal-geofisika/article/view/393
Hole, J. A., and Zelt, B. C., (1995), 3-D Finite-difference reflection travel times, Geophysical Journal International, 121, 427{434.
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https://jurnal-geofisika.or.id/index.php/jurnal-geofisika/article/view/393
Hole, J. A., and Zelt, B. C., (1995), 3-D Finite-difference reflection travel times, Geophysical Journal International, 121, 427{434.
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59
Finite-Difference Kirchhoff Migration - SBGf
https://sbgf.org.br/mysbgf/eventos/expanded_abstracts/16th_CISBGf/Finite-Difference%20Kirchhoff%20Migration.pdf
In practice, these compact. Green functions are represented by travel-time and amplitude tables. While in Kirchhoff time migration the Green functions are.
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https://sbgf.org.br/mysbgf/eventos/expanded_abstracts/16th_CISBGf/Finite-Difference%20Kirchhoff%20Migration.pdf
In practice, these compact. Green functions are represented by travel-time and amplitude tables. While in Kirchhoff time migration the Green functions are.
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60
Online Access - Journal of Seismic Exploration
http://www.geophysical-press.com/online/online.htm
Frequency-domain weighted-averaging finite-difference numerical simulation ... Joint inversion of seismic reflection traveltimes and wave polarizations for ...
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http://www.geophysical-press.com/online/online.htm
Frequency-domain weighted-averaging finite-difference numerical simulation ... Joint inversion of seismic reflection traveltimes and wave polarizations for ...
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61
Velocity Estimation via Ray-based Tomography - Iongeo.com
https://www.iongeo.com/virtuals/ResourceArchives/content/documents/Resource%20Center/Technical%20Papers/TP_FB_Tutorial%20VelocityEstimationViaRaybasedTomo%20_IJones_100201.pdf
can easily get confused by different descriptions in the literature. ... approaches to solving the reflection travel time inversion problem.
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https://www.iongeo.com/virtuals/ResourceArchives/content/documents/Resource%20Center/Technical%20Papers/TP_FB_Tutorial%20VelocityEstimationViaRaybasedTomo%20_IJones_100201.pdf
can easily get confused by different descriptions in the literature. ... approaches to solving the reflection travel time inversion problem.
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62
Application of the Seismic Reflection Method in Mineral ...
https://www.diva-portal.org/smash/get/diva2:844513/FULLTEXT01.pdf
3D ray-tracing and finite-difference modeling ... to the surface while reflection A2 does not; b) travel times to a plane with a strike of.
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https://www.diva-portal.org/smash/get/diva2:844513/FULLTEXT01.pdf
3D ray-tracing and finite-difference modeling ... to the surface while reflection A2 does not; b) travel times to a plane with a strike of.
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63
Seismo Links | Scientific Research Codes
https://seismo-learn.org/links/codes/
TauP | Tutorials (in Chinese): Calculate traveltimes, ray parameters, ray paths, ... SEISMIC_CPML: 2D/3D finite-difference seismic wave simulation with ...
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https://seismo-learn.org/links/codes/
TauP | Tutorials (in Chinese): Calculate traveltimes, ray parameters, ray paths, ... SEISMIC_CPML: 2D/3D finite-difference seismic wave simulation with ...
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64
2D Finite-Difference Wavefield Modelling - Jan Thorbecke
https://janth.home.xs4all.nl/Software/fdelmodcManual.pdf
If the modelling is finished, and one has for example modeled a shot record with reflections, and would like to pick travel times on the ...
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https://janth.home.xs4all.nl/Software/fdelmodcManual.pdf
If the modelling is finished, and one has for example modeled a shot record with reflections, and would like to pick travel times on the ...
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65
Short Note Validation of Regional Travel-Time Predictions ...
https://geophysics.earth.northwestern.edu/seismology/suzan/publications/69_Chang_et_al_BSSA_2014.pdf
of various P-velocity models for the travel-time prediction. ... 3D finite difference reflection travel times,. Geophys.
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https://geophysics.earth.northwestern.edu/seismology/suzan/publications/69_Chang_et_al_BSSA_2014.pdf
of various P-velocity models for the travel-time prediction. ... 3D finite difference reflection travel times,. Geophys.
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66
Processing the Artificial Edge-Effects for Finite-Difference ...
https://mdpi-res.com/d_attachment/applsci/applsci-12-04719/article_deploy/applsci-12-04719-v2.pdf?version=1652079089
finite difference in the frequency domain (FDFD) has several ... reliable forward operator for waveform inversion, wave equation travel-time.
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https://mdpi-res.com/d_attachment/applsci/applsci-12-04719/article_deploy/applsci-12-04719-v2.pdf?version=1652079089
finite difference in the frequency domain (FDFD) has several ... reliable forward operator for waveform inversion, wave equation travel-time.
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67
Minimod: A Finite Difference solver for Seismic Modeling
https://deepai.org/publication/minimod-a-finite-difference-solver-for-seismic-modeling
It can be observed in Figure 1, how more complex geophysical algorithms drive larger capacity installations in Total. The main driver of ...
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https://deepai.org/publication/minimod-a-finite-difference-solver-for-seismic-modeling
It can be observed in Figure 1, how more complex geophysical algorithms drive larger capacity installations in Total. The main driver of ...
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68
APPLIED 3D FULL-WAVEFORM INVERSION: - Spiral
https://spiral.imperial.ac.uk/bitstream/10044/1/44733/1/Silverton-ATT-2016-PhD-Thesis.pdf
inadequate finite-difference mesh did not cause the mismatch. ... The use of all these robust methodologies improved the travel-time match; better.
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https://spiral.imperial.ac.uk/bitstream/10044/1/44733/1/Silverton-ATT-2016-PhD-Thesis.pdf
inadequate finite-difference mesh did not cause the mismatch. ... The use of all these robust methodologies improved the travel-time match; better.
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69
Marchenko imaging for 2D and 3D complex structures
https://inside.mines.edu/~rsnieder/thesis_Jia.pdf
5.4.1 Marchenko redatuming vs finite-difference modeling . ... windows: t < td and t > td, where td is the direct arrival travel time from the focusing.
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https://inside.mines.edu/~rsnieder/thesis_Jia.pdf
5.4.1 Marchenko redatuming vs finite-difference modeling . ... windows: t < td and t > td, where td is the direct arrival travel time from the focusing.
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70
Comparison ofScattered Energy Using Point Scatterers ...
http://dspace.mit.edu/bitstream/handle/1721.1/68613/WILLIS-2.pdf?sequence...
would think that travel times alone should be sufficient to determine something as seemingly ... Diagram showing the geometry of the 3D finite difference.
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http://dspace.mit.edu/bitstream/handle/1721.1/68613/WILLIS-2.pdf?sequence...
would think that travel times alone should be sufficient to determine something as seemingly ... Diagram showing the geometry of the 3D finite difference.
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71
Computationally Efficient Methods for Seismic Modeling and ...
https://bora.uib.no/bora-xmlui/bitstream/handle/1956/24467/drthesis_2020_Sarajaervi.pdf?sequence=1&isAllowed=y
I first present a method for 3D acoustic ray-Born modeling in the time-domain ... propagators and a finite-difference based method is called reverse time ...
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https://bora.uib.no/bora-xmlui/bitstream/handle/1956/24467/drthesis_2020_Sarajaervi.pdf?sequence=1&isAllowed=y
I first present a method for 3D acoustic ray-Born modeling in the time-domain ... propagators and a finite-difference based method is called reverse time ...
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72
Least-squares Fourier finite-difference pre-stack depth ...
http://iopscience.iop.org/1742-2140/15/2/421
The media's anisotropy will greatly change the seismic wave travel time affecting the imaging quality. In this paper we propose a preconditioned ...
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http://iopscience.iop.org/1742-2140/15/2/421
The media's anisotropy will greatly change the seismic wave travel time affecting the imaging quality. In this paper we propose a preconditioned ...
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73
Anisotropic finite-difference algorithm for modeling elastic ...
https://publications.csiro.au/rpr/download?pid=csiro:EP111906&dsid=DS2
(1992) studied elastic wave propagation in 3D anisotropic ... traveltimes and amplitudes from the reflected P- and S-waves from the seam floor.
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https://publications.csiro.au/rpr/download?pid=csiro:EP111906&dsid=DS2
(1992) studied elastic wave propagation in 3D anisotropic ... traveltimes and amplitudes from the reflected P- and S-waves from the seam floor.
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74
Near-vertical and wide-angle seismic reflection studies of the ...
https://open.library.ubc.ca/media/download/pdf/24/1.0052966/1
Comparison of observed and calculated traveltimes for WAR and NVI data. ... geometry and careful use of 2D ray tracing and 3D forward and travel-time.
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https://open.library.ubc.ca/media/download/pdf/24/1.0052966/1
Comparison of observed and calculated traveltimes for WAR and NVI data. ... geometry and careful use of 2D ray tracing and 3D forward and travel-time.
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75
eikonal equatio - UCLA Mathematics
https://ww3.math.ucla.edu/camreport/cam06-06.pdf
from ray tracing methods, but those works are on reflection travel-time tomography which is different ... This can be done easily using central differences.
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https://ww3.math.ucla.edu/camreport/cam06-06.pdf
from ray tracing methods, but those works are on reflection travel-time tomography which is different ... This can be done easily using central differences.
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76
Lecture 37 Finite Difference Method, Yee Algorithm
https://engineering.purdue.edu/wcchew/ece604s20/Lecture%20Notes/Lect37.pdf
To obtain the transient (time-domain) solution of the wave equation for a more general, inhomogeneous medium, a numerical method has to be used. The finite- ...
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https://engineering.purdue.edu/wcchew/ece604s20/Lecture%20Notes/Lect37.pdf
To obtain the transient (time-domain) solution of the wave equation for a more general, inhomogeneous medium, a numerical method has to be used. The finite- ...
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77
Computationally efficient three-dimensional acoustic finite ...
https://membres-ljk.imag.fr/Ludovic.Metivier/PAPERS/2014_Operto_DSFDM_Geophysics_published.pdf
resulting from the discretization of the time-harmonic wave equation ... of magnitude for 3D problems solved with a finite-difference.
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https://membres-ljk.imag.fr/Ludovic.Metivier/PAPERS/2014_Operto_DSFDM_Geophysics_published.pdf
resulting from the discretization of the time-harmonic wave equation ... of magnitude for 3D problems solved with a finite-difference.
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78
Summary Introductio n Finite-difference calculations of seismic ...
https://www.earthdoc.org/publication/download/?publication=13250
n Finite-difference calculations of seismic wave traveltimes are used ... in the wavefront due total internal reflection, local interpolation of the missing ...
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https://www.earthdoc.org/publication/download/?publication=13250
n Finite-difference calculations of seismic wave traveltimes are used ... in the wavefront due total internal reflection, local interpolation of the missing ...
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79
Reflection seismic imaging to unravel subsurface geological ...
https://digital.csic.es/bitstream/10261/244473/4/Alcalde_Ore%20Geology%20Reviews_2021_public%20version.pdf
Finite-difference using a constant velocity 6000 m/s ... Traveltimes calculated using the 3D reflection traveltime modelling on.
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https://digital.csic.es/bitstream/10261/244473/4/Alcalde_Ore%20Geology%20Reviews_2021_public%20version.pdf
Finite-difference using a constant velocity 6000 m/s ... Traveltimes calculated using the 3D reflection traveltime modelling on.
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80
Implementing internal interfaces in finite-difference schemes ...
https://emgs.com/wp-content/uploads/2021/08/mittet_1_seg2018.pdf
Alternatively, the finite difference method can be ... CPU time and the memory size required to simulate a 3D prob- lem with finite differences are ...
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https://emgs.com/wp-content/uploads/2021/08/mittet_1_seg2018.pdf
Alternatively, the finite difference method can be ... CPU time and the memory size required to simulate a 3D prob- lem with finite differences are ...
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81
EikoNet: Solving the Eikonal equation with Deep Neural ...
https://agu.confex.com/agu/fm20/meetingapp.cgi/Paper/672234
The travel time solutions are allowed to violate the differential equation ... on its own without ever needing solutions from a finite difference algorithm.
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https://agu.confex.com/agu/fm20/meetingapp.cgi/Paper/672234
The travel time solutions are allowed to violate the differential equation ... on its own without ever needing solutions from a finite difference algorithm.
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82
Reflexw - GPR and seismic processing software - Sandmeier
https://www.sandmeier-geo.de/reflexw.html
... Finite Difference simulation software, tomographic inversion software. ... You may also have a look at a one side broschure for GPR, reflections ...
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https://www.sandmeier-geo.de/reflexw.html
... Finite Difference simulation software, tomographic inversion software. ... You may also have a look at a one side broschure for GPR, reflections ...
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83
Shallow velocity structure near the CO2 injection well ...
https://www.fttm.itb.ac.id/shallow-velocity-structure-near-the-co2-injection-well-candidate-of-gundih-ccs-project-derived-from-first-arrival-seismic-tomography-2/
Asikin, A. R. K. · Hole, J. A., and Zelt, B. C., 1995, Three-dimensional finite-difference reflection traveltimes, Geophysics.
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https://www.fttm.itb.ac.id/shallow-velocity-structure-near-the-co2-injection-well-candidate-of-gundih-ccs-project-derived-from-first-arrival-seismic-tomography-2/
Asikin, A. R. K. · Hole, J. A., and Zelt, B. C., 1995, Three-dimensional finite-difference reflection traveltimes, Geophysics.
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84
Wave-equation traveltime and amplitude for Kirchhoff migration
https://www.cgg.com/sites/default/files/2021-11/Wave-equation_traveltime_and_amplitude_for_Kirchhoff_migration_Final_Published.pdf
(2020) directly generate maximum-amplitude traveltimes using finite-difference solutions to the full wave equation. Their solution is limited within a ...
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https://www.cgg.com/sites/default/files/2021-11/Wave-equation_traveltime_and_amplitude_for_Kirchhoff_migration_Final_Published.pdf
(2020) directly generate maximum-amplitude traveltimes using finite-difference solutions to the full wave equation. Their solution is limited within a ...
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85
Seismic reflection, refraction and tomography results from 3D ...
https://www.skb.com/publication/2491035/P-17-25.pdf
Difficulties in tracing the reflections in the 3D seismic data may ... the reciprocal time differences, slopes and intercepts of travel ...
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https://www.skb.com/publication/2491035/P-17-25.pdf
Difficulties in tracing the reflections in the 3D seismic data may ... the reciprocal time differences, slopes and intercepts of travel ...
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86
Interactive analysis tools for the wide-angle seismic data for ...
https://www.publish.csiro.au/eg/eg08006
Synthetic traveltimes computed by the MODELING application can be ... B. C., 1995, 3-D finite-difference reflection traveltimes: Geophysical Journal ...
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https://www.publish.csiro.au/eg/eg08006
Synthetic traveltimes computed by the MODELING application can be ... B. C., 1995, 3-D finite-difference reflection traveltimes: Geophysical Journal ...
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87
Advanced finite-difference methods for seismic modeling
https://spgindia.org/geodec_09/yangliumrinal.pdf
We restrict our discussion to acoustic wave equation because of the ease of algebra. These are followed by description of EFDMs, new IFDMs and time- space ...
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https://spgindia.org/geodec_09/yangliumrinal.pdf
We restrict our discussion to acoustic wave equation because of the ease of algebra. These are followed by description of EFDMs, new IFDMs and time- space ...
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88
3D Viscoelastic Anisotropic Seismic Modeling with High-Order ...
https://upcommons.upc.edu/bitstream/handle/2117/84766/3D%20Viscoelastic%20Anisotropic.pdf
waves moving with different speeds when they travel in different directions. In ... grid time-domain finite-difference method [14, 16, 20, 21].
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https://upcommons.upc.edu/bitstream/handle/2117/84766/3D%20Viscoelastic%20Anisotropic.pdf
waves moving with different speeds when they travel in different directions. In ... grid time-domain finite-difference method [14, 16, 20, 21].
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89
4D Finite Difference Forward Modeling within a Redefined ...
https://www.searchanddiscovery.com/documents/2016/41922hill/ndx_hill.pdf
time-steps for proactive seismic reservoir monitoring. ... The 3D petro-elastic property models drive the finite-difference modeling and.
→ Check Latest Keyword Rankings ←
https://www.searchanddiscovery.com/documents/2016/41922hill/ndx_hill.pdf
time-steps for proactive seismic reservoir monitoring. ... The 3D petro-elastic property models drive the finite-difference modeling and.
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90
Computational methods for large-scale 3D acoustic finite ...
http://baron.web.elte.hu/2753753.pdf
propagation are available, but the finite-difference method is popu- ... have existed for some time and have been applied to 3D elastic mod-.
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http://baron.web.elte.hu/2753753.pdf
propagation are available, but the finite-difference method is popu- ... have existed for some time and have been applied to 3D elastic mod-.
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91
Lesson 6: Seismic Reflection - YouTube
https://www.youtube.com/watch?v=9yjuB004IFY
IRIS Earthquake Science
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https://www.youtube.com/watch?v=9yjuB004IFY
IRIS Earthquake Science
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92
Seismic Modeling of Complex Geological Structures
https://cdn.intechopen.com/pdfs/26253/InTech-Seismic_modeling_of_complex_geological_structures.pdf
Three different seismic forward realizations ... seismic travel time to compensate for the delay caused by the LVL. These corrections are.
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https://cdn.intechopen.com/pdfs/26253/InTech-Seismic_modeling_of_complex_geological_structures.pdf
Three different seismic forward realizations ... seismic travel time to compensate for the delay caused by the LVL. These corrections are.
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