Overview


Welcome to SWAG at KAUST, a group made up of students and researchers (see People) dedicated to Seismic Wave Analysis research and development with funding primarily from KAUST, as well external sources. 

We hope this page will be a vehicle to make our work visible and available online to the scientific community at large as well as our sponsors. To learn more about SWAG vision, mission, and scope, please access the following link. Also feel free to explore info on research done at SWAG. KAUST is thriving to be a hub for ideas and innovations and we plan to contribute to this effort in the seismic wave analysis arena.


​​Visit thold SWAG website by clicking here​.
​​​
  • Zedong Wu, Tariq Alkhalifah and Zhendong Zhang, "A Partial-low-rank method for solving acoustic wave equation", Journal of Computational Physics (2018): submitted.​
Keywords:
low-rank method, acoustic
  • Zedong Wu, Hongwei Liu and Tariq Alkhalifah, "Pure Quasi-p wave calculation in anisotropic media using a hybrid method", Geophys J Inter (2018): submitted.
Keywords:
quasi-p waves, anisotropic
  • Zedong Wu and Tariq Alkhalifah, ”Selective data extension for full-waveform inversion: An efficient solution for cycle skipping” Geophysics 83 (2018): R201-R211. doi: 10.1190/geo2016-0649.1
  • BibTeX​ 
Keywords:
Acoustic, crosscorrelation, full-waveform inversion, inversion, nonlinear
  • Tariq Alkhalifah, Bingbing Sun and Zedong Wu, "Full model wavenumber inversion (FMWI): identifying sources of information for the illusive middle model wavenumbers", Geophysics (2018): submitted.​
Keywords:
Full model wavenumber inversion
  • Zedong Wu and Tariq Alkhalifah, ”An efficient Helmholtz solver for acoustic transversely isotropic media”, Geophysics 83 (2018): C75-C83. doi: 10.1190/geo2017-0618.1​
  • ​BibTeX​ 
Keywords:
acoustic, anisotropy, Fourier, VTI, wave propagation
  • Zhendong Zhang, Yike Liu, Tariq Alkhalifah and Zedong Wu, "Efficient anisotropic quasi-P wavefield extrapolation using an isotropic low-rank approximation", Geophys J Int 213 (2018):48–57. doi: 10.1093/gji/ggx543
  • ​BibTeX​ 
Keywords:
Numerical modelling, Seismic anisotropy, Wave propagation
  • Vladimir Kazei and Tariq Alkhalifah, "Waveform inversion for orthorhombic anisotropy with P waves: feasibility and resolution",  Geophys J Int 213 (2018): 963–982. doi: 10.1093/gji/ggy034​
  • ​BibTeX​ 
Keywords:
Fourier analysis, Inverse theory, Waveform inversion, Body waves, Seismic anisotropy, Wave scattering and diffraction
  • Yuanyuan Li, Yunseok Choi, Tariq Alkhalifah, Zhenchun Li and Kai Zhang, ”Full-waveform inversion using a nonlinearly smoothed wavefield”,  Geophysics 83 (2018): R117-R127. doi: 10.1190/geo2017-0312.1
  • ​BibTeX​ 
Keywords:
crosscorrelation, full-waveform inversion, low frequency
  • Bingbing Sun and Tariq Alkhalifah, ”Automatic wave-equation migration velocity analysis by focusing subsurface virtual sources” Geophysics 83 (2018): U1-U8. doi: 10.1190/geo2017-0213.1
  • ​BibTeX​ 
Keywords:
wave equation, VTI, velocity analysis
  • Yunseok Choi and Tariq Alkhalifah, ”Time-domain full-waveform inversion of exponentially damped wavefield using the deconvolution-based objective function” Geophysics 83 (2018), R77-R88: doi: 10.1190/geo2017-0057.1
  • ​BibTeX​ 
Keywords:
full-waveform inversion, low frequency, deconvolution, time-domain, amplitude
  • Ju-Won Oh and Tariq Alkhalifah, “Optimal full waveform inversion strategy for marine data in azimuthally rotated elastic orthorhombic media”, Geophysics (2018): accepted. doi: 10.1190/geo2017-0762.1​
Keywords:
full-waveform inversion, anisotropy, wide azimuth (WAZ), multiparameter, fractures
  • Ju-Won Oh and Tariq Alkhalifah, “Full waveform inversion using envelope-based global correlation norm”, Geophys J Int 213 (2018): Pages 815–823. doi: 10.1093/gji/ggy031.​
  • ​BibTeX​ 
Keywords:
Image processing, Inverse theory, Waveform inversion, Computational seismology, Controlled source seismology, Seismic tomography
  • Nabil Masmoudi and Tariq Alkhalifah, "Full waveform inversion in acoustic orthorhombic media and application to a North Sea data set", Geophysics (2017): submitted.
Keywords:
acoustic orthorhombic
  • Zedong Wu and Tariq Alkhalifah ,"A highly accurate finite difference method with minimum dispersion error for Helmholtz equation", Journal Of Computational Physics (2017): submitted.
Keywords:
finite difference, dispersion error, Helmhotz
  • Ramzi Djebbi and Tariq Alkhalifah "Frequency domain multi-parameter acoustic inversion for transversely isotropic media with a vertical axis of symmetry", Geophysics (2017): submitted.
Keywords:
frequency domain, isotropic, acoustic
  • Yuanyuan Li, Qiang Guo, N. Leo and Tariq Alkhalifah, "Elastic reflection waveform inversion with variable density", Geophysics (2017): submitted.
Keywords:
elastic, inversion, variable density
  • Oleg Ovcharenko, Vladimir Kazei, Daniel Peter and Tariq Alkhalifah, "Variance-based salt body reconstruction for improved full-waveform inversion", Geophysics (2017): submitted.
Keywords:
salt bpdy, full-waveform invesrion
  • Antoine Guitton and Tariq Alkhalifah, "A parameterization study for elastic VTI full-waveform inversion of hydrophone components: Synthetic and North Sea field data examples ", Geophysics 82 (2017): R299-R308. DOI: 10.1190/geo2017-0073.1
  • ​BibTeX​ 
Keywords:
full-waveform inversion, anisotropy, VTI, North Sea, least squares
  • Qi Hao and Tariq Alkhalifah, ”An acoustic eikonal equation for attenuating orthorhombic media” Geophysics 82 (2017): WA67-WA81.
    doi: 10.1190/geo2016-0632.1
  • ​BibTeX​ 
Keywords:
anisotropy, attenuation, traveltime, P-wave, Q
  • Hanchen Wang and Tariq Alkhalifah, "Micro-seismic Imaging Using a Source Independent Waveform Inversion Method", Geophys J Int: submitted.
Keywords:
Micro-seismic, inversion
  • Qiang Guo and Tariq Alkhalifah, ”Elastic reflection-based waveform inversion with a nonlinear approach”, Geophysics 82 (2017), R309-R321.
    doi: 10.1190/geo2016-0407.1
  • ​BibTeX​ 
Keywords:
elastic, reflection, full-waveform inversion, nonlinear
  • Tariq Alkhalifah, "The sensitivity of surface seismic P-wave data in transversely isotropic media to reflector depth", Geophysical Prospecting (2017): in publication.
Keywords:
surface seismic, transversely isotropic media
  • Ju-Won Oh, Mahesh Kalita and Tariq Alkhalifah, “3D elastic full waveform inversion using P-wave excitation amplitude: Application to real OBC data”, Geophysics 83 (2017): R129-R140. doi: 10.1190/geo2017-0236.1
  • ​BibTeX​ 
Keywords:
full-waveform inversion, 3D elastic inversion, excitation amplitude, mode separation, anisotropy
  • Ju-Won Oh and Tariq Alkhalifah, "Study on the full-waveform inversion strategy for 3D elastic orthorhombic anisotropic media: Application to OBC data", Geophysical Prospecting (2017): submitted.​​​
Keywords:
full-waveform inversion, elastic, orthorhombic, anisotropic, OBC
  • Vladimir Li, Hui Wang, Ilya Tsvankin, Esteban Díaz and Tariq Alkhalifah, ”Inversion gradients for acoustic VTI wavefield tomography” Geophysics 82 (2017): WA55-WA65. doi: 10.1190/geo2016-0624.1
  • BibTeX​ 
Keywords:
wavefield tomography, imaging, transverse isotropy, acoustic, inversion
  • Zedong Wu and Tariq Alkhalifah, "Efficient scattering-angle enrichment for a nonlinear inversion of the background and perturbations components of a velocity model", Geophys J Int 210 (2017): 1981-1992. DOI: 10.1093/gji/ggx283​
  • BibTeX​ 
Keywords:
Inverse theory, Tomography, Body waves, Seismic tomography, Wave propagation, Wave scattering and diffraction
  • Mahesh Kalita and Tariq Alkhalifah, "Efficient full waveform inversion using the excitation representation of the source wavefield", Geophys J Int 210 (2017): 1581-1594. DOI: 10.1093/gji/ggx214​​
  • BibTeX​ 
Keywords:
Inverse theory, Tomography, Seismic tomography
  • Zhendong Zhang and Tariq Alkhalifah, "Full waveform inversion using oriented time-domain imaging method for vertical transverse isotropic media", Geophysical Prospecting. doi:10.1111/1365-2478.12560​
  • ​BibTeX​ 
Keywords:
Anisotropy, Full waveform, Inverse problem
  • Ramzi Djebbi, René-Edouard Plessix and Tariq Alkhalifah, "Analysis of the traveltime sensitivity kernels for an acoustic transversely isotropic medium with a vertical axis of symmetry", Geophysical Prospecting 65 (2017): 22–34​.​​ DOI: 10.1111/1365-2478.12361​.​
  • BibTeX​ 
Keywords:
Anisotropy, Tomography, Inversion
  • Tariq Alkhalifah and Zedong Wu, "Migration velocity analysis using prestack wavefields", Geophysical Prospecting 65 (2017): 639–649​. DOI: 10.1111/1365-2478.12439.
  • BibTeX​ 
Keywords:
migration, prestack, velocity analysis
  • Umair bin Waheed, Alexey Stovas and Tariq Alkhalifah, "Anisotropy parameter inversion in vertical axis of symmetry media using diffractions", Geophysical Prospecting (2017):submitted.​​
  • ​BibTeX​ 
Keywords:
anisotropy, VTI, diffraction
  • Tariq Alkhalifah, Nabil Masmoudi and Ju-Won Oh, "A recipe for practical full-waveform inversion in orthorhombic anisotropy", The Leading Edge 35 (2016), 1076–1083. doi.org/10.1190/tle35121076.1
  • BibTeX​ 
Keywords:
full-waveform inversion, anisotropy, elastic
  • Ali Aldawood, Ibrahim Hoteit and Tariq Alkhalifah, "Least-squares Generalized Interferometric Multiple Imaging", 78th EAGE Conference and Exhibition (2016). doi: 10.3997/2214-4609.201601202​​
Keywords:
least squares, interferometry, multiple imaging
  • Ramzi Djebbi and Tariq Alkhalifah, "Hybrid Frequency Domain Full Waveform Inversion Using Born Sensitivity Kernels", 78th EAGE Conference and Exhibition (2016). doi: 10.3997/2214-4609.201600644​​​​
Keywords:
full-waveform inversion, sensitivity kernels
  • Tariq Alkhalifah and Zedong Wu, ”Multiscattering inversion for low-model wavenumbers.” Geophysics 81 (2016): R417-R428. doi: 10.1190/geo2015-0650.1​​​
  • BibTeX​ 
Keywords:
full-waveform inversion, wave equation, velocity analysis
  • Zedong Wu and Tariq Alkhalifah, "The optimized gradient method for full waveform inversion and its spectral implementation", Geophysics Journal International 205 (2016): 1823-1831. doi: 10.1093/gji/ggw112.​
  • BibTeX​ 
Keywords:
Numerical solutions, Fourier analysis, Inverse theory, Tomography, Wave propagation
  • Shibo Xu, Alexey Stovas and Tariq Alkhalifah, "Estimation of the anisotropy parameters from imaging moveout of diving wave in a factorized VTI medium", Geophysics 81 (2016): C139-C150. doi: 10.1190/geo2015-0600.1
  • BibTeX​ 
Keywords:
diving wave, factorized model, seismic anisotropy
  • Qi Hao and Tariq Alkhalifah, "An acoustic eikonal equation for attenuating VTI media", SEG Technical Program Expanded Abstracts 2016: 458-463. doi: 10.1190/segam2016-13857107.1
  • ​BibTeX​ 
Keywords:
acoustic, anisotropy, traveltime, viscoelastic, attenuation
  • Nabil Masmoudi and Tariq Alkhalifah, "Traveltime approximations and parameter estimation for orthorhombic media", Geophysics 81 (2016): C127-C137. doi: 10.1190/geo2015-0367.1
  • BibTeX​ 
Keywords:
anisotropy, effective, estimation, multiparameter, traveltime
  • Jiubing Cheng, Zedong Wu and Tariq Alkhalifah, "Simulating propagation of decoupled elastic waves using low-rank approximate mixed-domain integral operators for anisotropic media", Geophysics 81 (2016): T63-T77 doi: 10.1190/geo2015-0184.1.
  • BibTex​ 
Keywords:
anisotropy, elastic, decomposition, wave propagation, polarization
  • Qi Hao, Alexey Stovas and Tariq Alkhalifah, "The offset-midpoint traveltime pyramid of P-waves in homogeneous orthorhombic media", Geophysics 81 (2016): C151-C162. doi: 10.1190/geo2015-0352.1​
  • BibTeX​ 
Keywords:
anisotropy, traveltime, P-wave, time migration, migration
  • Vladimir Li, Ilya Tsvankin and Tariq Alkhalifah, "Analysis of RTM extended images for VTI media", Geophysics 81 (2016): S139-S150. doi: 10.1190/geo2015-0384.1​​​​
  • BibTeX​ 
Keywords:
anisotropy, imaging, VTI, wave equation, reverse time migration
  • Tariq Alkhalifah, "Full-model wavenumber inversion: An emphasis on the appropriate wavenumber continuation", Geophysics 81 (2015): R89-R98. doi: 10.1190/geo2015-0537.1.
  • ​Bib​Tex​
Keywords:
full-waveform inversion, wave equation, velocity analysis
  • Ju-Won Oh and Tariq Alkhalifah, "The scattering potential of partial derivative wavefields in 3D elastic orthorhombic media: An inversion prospective", Geophys J Int 206 (2016): 1740-1760. DOI: 10.1093/gji/ggw238.​
  • BibTex​ 
Keywords:
Image processing, Inverse theory, Numerical approximations and analysis, Controlled source seismology, Seismic anisotropy, Wave scattering and diffraction
  • Ju-Won Oh and Tariq Alkhalifah, "Elastic Orthorhombic anisotropic parameter inversion: An analysis of parameterization", Geophysics 81 (2016): C279-C293. doi: 10.1190/geo2015-0656.1​​​
  • BibTeX​ 
Keywords:
Multiparameter 3D elastic waveform inversion, radiation pattern, orthorhombic anisotropy, parameterization, deviation parameters
  • Umair bin Waheed and Tariq Alkhalifah, "Effective ellipsoidal models for wavefield extrapolation in tilted orthorhombic media", Studia Geophysica et Geodaetica 60 (2016): 349–369​.​ doi:10.1007/s11200-015-1151-z
  • BibTex​ 
Keywords:
wave propagation, seismic anisotropy, acoustic properties, non-linear differential equations
  • Tariq Alkhalifah, "Research Note: Insights into the data dependency on anisotropy: an inversion prospective", Geophysical Prospecting 64 (2016): 505–513.​ DOI: 10.1111/1365-2478.12345
  • BibTex​ 
Keywords:
anisotropy, data dependency
  • Mahesh Kalita and Tariq Alkhalifah, "Common-image gathers using the excitation imaging condition", Geophysics 81 (2016): S261-S269. doi:  10.1190/geo2015-0413.1
  • ​BibTeX​ 
Keywords:
imaging, common angle, common offset, reverse time migration
  • Nabil Masmoudi and Tariq Alkhalifah, "A new parametrization for waveform inversion in acoustic orthorhombic media", Geophysics  81 (2016): R157-R171. doi: 10.1190/geo2015-0635.1
  • BibTeX​ 
Keywords:
waveform, inversion, acoustic
  • Tariq Alkhalifah and Zedong Wu, "The natural combination of full and image-based waveform inversion", Geophysical Prospecting 64 (2016): 19–30. DOI: 10.1111/1365-2478.12264.
  • BibT​ex​​ 
Keywords:
FWI, MVA
  • Umair bin Waheed and Tariq Alkhalifah, "Fast sweeping methods for the factored TTI eikonal equation", 77th EAGE Conference and Exhibition 2015​ (2015): DOI: 10.3997/2214-4609.201412998.​
Keywords:
TTI, eikonal
  • Yunseok Choi and Tariq Alkhalifah, "Unwrapped phase inversion with an exponential damping",  Geophysics 80 (2015): R251-R264. doi: 10.1190/geo2014-0498.1.​​​
  • BibTe​x​ 
Keywords:
inversion, phase, frequency-domain
  • Tariq Alkhalifah, "Conditioning the full-waveform inversion gradient to welcome anisotropy", Geophysics 80 (2015): R111-R122. doi: 10.1190/geo2014-0390.1.
  • BibTe​x​ 
Keywords:
inversion, anisotropy, acoustic
  • Zedong Wu and Tariq Alkhalifah, "Simultaneous inversion of the background velocity and the perturbation in full-waveform inversion", Geophysics 80 (2015): R417-R329. doi: 10.1190/geo2014-0365.1.
  • BibTe​x​ 
Keywords:
acoustic, least squares, reflection, inversion, velocity analysis
  • Umair bin Waheed and Tariq Alkhalifah, "An efficient wave extrapolation method for anisotropic media with tilt", Geophysical Prospecting 63 (2015): 1126-1141. DOI: 10.1111/1365-2478.12233.
  • BibTe​x​ 
Keywords:
Anisotropy, Modelling, Wave
  • Tariq Alkhalifah, "Scattering-angle based filtering of the waveform inversion gradients", Geophysical Journal International 200 (2015): 363-373. doi: 10.1093/gji/ggu379.
  • BibT​ex​ 
Keywords:
Inverse theory, Seismic tomography, Acoustic properties
  • Umair bin Waheed, Tariq Alkhalifah and Hui Wang, "Efficient traveltime solutions of the acoustic TI eikonal equation", Journal Of Computational Physics 282 (2015): 62-76. doi:10.1016/j.jcp.2014.11.006.
  • BibTe​x​ 
Keywords:
Eikonal equation, Tilted transverse isotropy, Anisotropy, Fast sweeping method, Efficient traveltime solutions
  • Qi Hao, Alexey Stovas and Tariq Alkhalifah, "The offset-midpoint traveltime pyramid in 3D transversely isotropic media with a horizontal symmetry axis", Geophysics 80 (2015): T51-T62. doi: 10.1190/geo2013-0322.1.
  • BibT​ex​ 
Keywords:
anisotropy, traveltime, modeling, prestack, migration
  • Paul Sava and Tariq Alkhalifah, "Anisotropy signature in reverse-time migration extended images", Geophysical Prospecting 63 (2015): 271-282. DOI: 10.1111/1365-2478.12189.
  • BibTe​x​ 
Keywords:
Anisotropy signature, reverse-time migration
  • Tariq Alkhalifah, Sergey Fomel and Zedong Wu, "Source–receiver two-way wave extrapolation for prestack exploding-reflector modelling and migration", Geophysical Prospecting 63 (2015): 23-34. DOI: 10.1111/1365-2478.12162.
  • BibT​ex​ 
Keywords:
Source-receiver, two-way wave extrapolation, prestack exploding-reflector
  • Tariq Alkhalifah, "Prestack exploding reflector modelling and migration for anisotropic media", Geophysical Prospecting 63 (2015): 2-10. DOI: 10.1111/1365-2478.12148.
  • BibT​ex​ 
Keywords:
Anisotropic, Prestack, Migration
  • M. A. H. Zuberi and Tariq Alkhalifah, "Generalized internal multiple imaging", Geophysics 79 (2014): S207-S216. doi: 10.1190/geo2013-0287.1.
  • BibTex​ 
Keywords:
imaging, multiples, scattering, Reverse time migration
  • Alexey Stovas and Tariq Alkhalifah, "Analytical approximations of diving-wave imaging in constant-gradient medium", Geophysics 79 (2014): S131-S140. doi: 10.1190/geo2013-0386.1.
  • BibT​ex​ 
Keywords:
diving wave, imaging
  • Tariq Alkhalifah and Rene-Edouard Plessix, "A recipe for practical full-waveform inversion in anisotropic media: An analytical parameter resolution study", Geophysics 79 (2014): R91-R101. doi: 10.1190/geo2013-0366.1.
  • BibTe​x​ 
Keywords:
inversion, anisotropy, scattering, RTM
  • M. A. H. Zuberi and Tariq Alkhalifah, "Generalized internal multiple imaging (GIMI) using Feynman-like diagrams", Geophysical Journal International 197 (2014): 1582-1592.
  • Bib​Tex​ 
Keywords:
Interferometry, Body waves, Wave scattering and diffraction
  • Ali Aldawood, Ibrahim Hoteit and Tariq Alkhalifah, "The possibilities of compressed-sensing-based Kirchhoff prestack migration", Geophysics 79 (2014): S113-S120. doi: 10.1190/geo2013-0271.1.
  • BibT​ex​ 
Keywords:
imaging, sparse, inversion, least squares, migration
  • Tariq Alkhalifah and Yunseok Choi, "From tomography to full-waveform inversion with a single objective function", Geophysics 79 (2014): R55-R61. doi: 10.1190/geo2013-0291.1.
  • BibT​ex​ 
Keywords:
inversion, tomography, velocity analysis
  • Ramzi Djebbi and Tariq Alkhalifah, "Traveltime sensitivity kernels for wave equation tomography using the unwrapped phase", Geophysical Journal International 197 (2014): 975-986. doi: 10.1093/gji/ggu025.
  • BibTe​x​ 
Keywords:
Inverse theory, Seismic tomography, Wave propagation
  • Wilson Ibanez-Jacome, Tariq Alkhalifah and Umair bin Waheed, "Effective orthorhombic anisotropic models for wavefield extrapolation", Geophysical Journal International 198 (2014): 1653-1661. doi: 10.1093/gji/ggu229.
  • BibT​ex​ 
Keywords:
Numerical solutions, Non-linear differential equations, Seismic anisotropy, Wave propagation, Acoustic properties
  • Zedong Wu and Tariq Alkhalifah, "The optimized expansion based low-rank method for wavefield extrapolation", Geophysics 79 (2014): T51-T60. doi: 10.1190/geo2013-0174.1.
  • BibT​ex​ 
Keywords:
Reverse time migration, wave propagation, anisotropy, dispersion, Fourier transform
  • Tariq Alkhalifah, "Full-waveform inversion of the unwrapped phase of a model", Geophysical Prospecting 62 (2014): 397-403. DOI: 10.1111/1365-2478.12089.
  • BibT​ex​ 
Keywords:
Full waveform inversion, unwrapped phase
  • Alexey Stovas and Tariq Alkhalifah, "Mapping moveout approximations in TI media", Geophysics 79 (2014): C19-C26. doi: 10.1190/geo2013-0039.1.
  • BibT​ex​ 
Keywords:
traveltime, anisotropy, mapping
  • Tariq Alkhalifah, "Effective wavefield extrapolation in anisotropic media: accounting for resolvable anisotropy", Geophysical Prospecting 62 (2014): 1089-1099. DOI: 10.1111/1365-2478.12121.
  • BibTex​ 
Keywords:
wave field extrapolation, anisotropic media, resolvable anisotropy
  • Tariq Alkhalifah, "Prestack wavefield approximations", Geophysics 78 (2013): T141-T149. doi: 10.1190/geo2012-0532.1.
  • BibT​ex​ 
Keywords:
prestack, migration, modeling
  • Yunseok Choi and Tariq Alkhalifah, "Multisource waveform inversion of marine streamer data using normalized wavefield", Geophysics 78 (2013): R197-R206. doi: 10.1190/geo2012-0491.1.
  • BibT​ex​ 
Keywords:
inversion, sources, wave propagation, marine
  • Umair bin Waheed, Ivan Psencik, Vlastislav Cerveny, Einar Iversen and Tariq Alkhalifah, "Two-point paraxial traveltime formula for inhomogeneous isotropic and anisotropic media: Tests of accuracy", Geophysics 78 (2013): WC65-WC80. doi: 10.1190/geo2012-0406.1.
  • Bib​Tex​ 
Keywords:
anisotropy, ray tracing, traveltime
  • Umair bin Waheed, Tariq Alkhalifah and Alexey Stovas, "Diffraction traveltime approximation for TI media with an inhomogeneous background", Geophysics 78 (2013): WC103-WC111. doi: 10.1190/geo2012-0413.1.
  • BibTe​x​ 
Keywords:
diffraction, anisotropy, traveltime
  • Tariq Alkhalifah, "Residual extrapolation operators for efficient wavefield construction", Geophysical Journal International 193 (2013): 1027-1034. doi: 10.1093/gji/ggt040.
  • BibTe​x​ 
Keywords:
Numerical solutions, Fourier analysis, Numerical approximations and analysis, Body waves, Wave propagation, Acoustic properties
  • Tariq Alkhalifah, "Acoustic anisotropic wavefields through perturbation theory", Geophysics 78 (2013): WC41-WC50. doi: 10.1190/geo2012-0391.1.
  • BibT​ex​ 
Keywords:
acoustic, anisotropy, modeling
  • Xuxin Ma and Tariq Alkhalifah, "Wavefield extrapolation in pseudodepth domain", Geophysics 78 (2013): S81-S91. doi: 10.1190/geo2012-0237.1.
  • Bib​Tex​ 
Keywords:
Reverse time migration, wave equation, wave propagation, imaging
  • Xiaolei Song and Tariq Alkhalifah, "Modeling of pseudoacoustic P-waves in orthorhombic media with a low-rank approximation", Geophysics 78 (2013): C33-C40. doi: 10.1190/geo2012-0144.1.
  • BibT​ex​ 
Keywords:
3D, acoustic, modeling, P-wave, anisotropy
  • Akbar Zuberi and Tariq Alkhalifah, "Imaging by forward propagating the data: theory and application", Geophysical Prospecting 61 (2013): 248-267. DOI: 10.1111/1365-2478.12006.
  • Bib​Tex​ 
Keywords:
Forward propagating, Primaries, Multiples
  • Christos Saragiotis, Tariq Alkhalifah, and Sergey Fomel, "Automatic traveltime picking using local time-frequency maps", Geophysics 78 (2013): T53-T58. doi: 10.1190/geo2012-0026.1.
  • Bib​Tex​ 
Keywords:
traveltime, tomography, signal processing
  • Yunseok Choi and Tariq Alkhalifah, "Frequency-domain waveform inversion using the phase derivative", Geophysical Journal International 195 (2013): 1904-1916. doi: 10.1093/gji/ggt351.
  • Bib​Tex​ 
Keywords:
Inverse theory, Theoretical seismology, Wave propagation
  • Lyubov Skopintseva and Tariq Alkhalifah, "An analysis of AVO inversion for postcritical offsets in HTI media", Geophysics 78 (2012): N11-N20. doi:10.1190/geo2011-0288.1.
  • BibT​ex​ 
Keywords:
anisotropy, amplitude variation with offset (AVO), fractures, inversion, wide azimuth
  • Tariq Alkhalifah, "Traveltime approximations for inhomogeneous transversely isotropic media with a horizontal symmetry axis", Geophysical Prospecting 61 (2013), 495-503, DOI: 10.1111/j.1365-2478.2012.01067.x​.
  • Bib​Tex​ 
Keywords:
Azimuth, HTI media, Isotropic
  • Paul Sava and Tariq Alkhalifah, "Wide-azimuth angle gathers for anisotropic wave-equation migration", Geophysical Prospecting 61 (2013): 75-91. DOI: 10.1111/j.1365-2478.2012.01024.x​.
  • BibT​ex​ 
Keywords:
Wave-equation, Migration, Angle gathers, Anisotropy
  • Pavel Golikov, Tariq Alkhalifah and Alexey Stovas, "Prestack traveltimes for dip-constrained TI media", SEG Technical Program Expanded Abstracts (2012). doi: 10.1190/segam2012-0507.1.
  • BibTex​ 
Keywords:
anisotropy, modeling, prestack, velocity, TTI
  • Tariq Alkhalifah and Yunseok Choi, "Taming waveform inversion non-linearity through phase unwrapping of the model and objective functions", Geophysical Journal International 191 (2012): 1171-1178. doi: 10.1111/j.1365-246X.2012.05699.x​
  • Bib​Tex​ 
Keywords:
Time series analysis, Inverse theory, Seismic tomography
  • Alexey Stovas and Tariq Alkhalifah, "A new traveltime approximation for TI media", Geophysics 77 (2012): C37-C42. doi: 10.1190/geo2011-0158.1​.​
  • B​ibTex​ 
Keywords:
anisotropy, modeling, imaging
  • Yunseok Choi and Tariq Alkhalifah, "Application of multi-source waveform inversion to marine streamer data using the global correlation norm", Geophysical Prospecting 60 (2012): 748-758. DOI: 10.1111/j.1365-2478.2012.01079.x​.
  • Bib​Tex​ 
Keywords:
Global correlation, Marine streamer data, Modelled
  • Tariq Alkhalifah, "Prestack traveltime approximations", Geophysics 77 (2012): U31-U37. doi: 10.1190/geo2011-0465.1​.
  • Bib​Tex​ 
Keywords:
traveltime, prestack, velocity analysis
  • Alexey Stovas and Tariq Alkhalifah, "The TTI slowness surface approximation​", 2011 SEG Annual Meeting, 18-23 September, San Antonio, Texas: online.
  • ​​BibTex​​ 
Keywords:
TTI, slowness
  • Yunseok Choi and Tariq Alkhalifah, "Source-independent time-domain waveform inversion using convolved wavefields: Application to the encoded multisource waveform inversion", Geophysics 76 (2012): R125-R134. doi: 10.1190/geo2010-0210.1​​.​
  • BibT​ex​ 
Keywords:
inversion, sources, wavelet, modeling, wave equation
  • Tariq Alkhalifah and Paul Sava, "Migration Using a Transversely Isotropic Medium with Symmetry Normal to the Reflector Dip", International journal of Geophysics (2011): Article ID 530106, doi:10.1155/2011/530106.​
  • ​Bi​bTex​ 
Keywords:
Migration, transversely isotropic medium, symmetry normal to the reflector dip
  • Tariq Alkhalifah and Sergey Fome, "The basic components of residual migration in VTI media using anisotropy continuation", Journal of Petroleum Exploration and Production Technology 1 (2011): 17-22. doi: 10.1007/s13202-011-0006-6​.
  • ​BibTex​ 
Keywords:
Velocity continuation, Residual migration, Anisotropy
  • Tariq Alkhalifah, "Traveltime approximations for transversely isotropic media with an inhomogeneous background", Geophysics 76 (2011): WA31-WA42. doi: 10.1190/1.3555040​.​
  • BibT​ex​ 
Keywords:
traveltime approximations, transversely isotropic media, inhomogeneous background
  • Tariq Alkhalifah, "Wavefield dependency on virtual shifts in the source location", Geophysical Prospecting 59 (2011): 627-634. DOI: 10.1111/j.1365-2478.2010.00944.x​.
  • Bi​bTex​ 
Keywords:
Laplacian, Perturbation, Wavefield
  • Tariq Alkhalifah, "Scanning anisotropy parameters in complex media", Geophysics 76 (2011) U13-U22. doi: 10.1190/1.3553015​.
  • Bi​bTex​ 
Keywords:
anisotropic media, geophysical techniques, inhomogeneous media, partial differential equations, perturbation theory, seismology
  • Tariq Alkhalifah and Sergey Fomel, "Angle gathers in wave-equation imaging for transversely isotropic media", Geophysical Prospecting 59 (2011): 422 - 431. DOI: 10.1111/j.1365-2478.2010.00930.x​.
  • BibTex​ 
Keywords:
Angle gathers, Anisotropy
  • Tariq Alkhalifah, "Efficient traveltime compression for 3D prestack Kirchhoff migration", Geophysical Prospecting 59 (2011): 1-9. DOI: 10.1111/j.1365-2478.2010.00886.x​
  • BibTex​ 
Keywords:
Compression, Migration, Traveltime
  • Tariq Alkhalifah, "Acoustic wavefield evolution as a function of source location perturbation", Geophysical Journal International 183 (2010): 1324 - 1331. DOI: 10.1111/j.1365-246X.2010.04800.x.
  • Bib​Tex​ 
Keywords:
Numerical solutions, Wave propagation, Acoustic
  • Tariq Alkhalifah and Sergey Fomel, "An eikonal-based formulation for traveltime perturbation with respect to the source location", Geophysics 75 (2010): T175-T183. doi: 10.1190/1.3490390​​.
  • ​BibTex ​
Keywords:
eikonal, traveltime perturbation, source location
  • Tariq Alkhalifah and Paul Sava, "A transversely isotropic medium with a tilted symmetry axis normal to the reflector", Geophysics 75 (2010): A19-A24. doi: 10.1190/1.3409114​​.
  • BibTex​ 
Keywords:
transversely isotropic media
  • ​Tariq Alkhalifah, "Prestack phase-shift migration of separate offsets in laterally inhomogeneous media",  Geophysics 75 (2010): S95-S101.​ doi: 10.1190/1.3381884​​.
  • BibTex​ 
Keywords:
prestack phase-shift migration, laterally inhomogeneous media