3D wave-equation dispersion inversion of surface waves
- Zhaolun Liu (King Abdullah University of Science and Technology (KAUST)) | Jing Li (King Abdullah University of Science and Technology (KAUST)) | Sherif M. Hanafy (King Abdullah University of Science and Technology (KAUST)) | Gerard Schuster (King Abdullah University of Science and Technology (KAUST))
- Document ID
- Society of Exploration Geophysicists
- 2018 SEG International Exposition and Annual Meeting, 14-19 October, Anaheim, California, USA
- Publication Date
- Document Type
- Conference Paper
- 2018. Society of Exploration Geophysicists
- 3D, Inversion, Near surface, Dispersion, Surface wave
- 0 in the last 30 days
- 16 since 2007
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The 2D wave-equation dispersion inversion (WD) methodol- ogy is extended to the inversion of three-dimensional data for a 3D shear-wave velocity model. The objective function of 3D WD is the sum of the squared wavenumber differences along each azimuth angle between the predicted and observed 3D dispersion curves. The 3D dispersion curves are obtained by wavenumber-frequency analysis of the fundamental Rayleigh waves in each 3D shot gather. The S-wave velocity update is computed by a weighted zero-lag crosscorrelation between the source wavefield and the back-projected receiver-side wavefield for each azimuth angle. The synthetic and field data examples demonstrate that the 3D WD method can accurately estimate the 3D S-wave velocity model in laterally heterogeneous media.
Presentation Date: Monday, October 15, 2018
Start Time: 1:50:00 PM
Location: 213B (Anaheim Convention Center)
Presentation Type: Oral
|File Size||5 MB||Number of Pages||5|
Dou,S., andJ. B.Ajo-Franklin,2014,Full-wavefield inversion of surface waves for mapping embedded low-velocity zones in permafrost:Geophysics,79,no.6,EN107–EN124,10.1190/geo2013-0427.1.
Groos,L.,M.Schäfer,T.Forbriger, andT.Bohlen,2014,The role of attenuation in 2D full-waveform inversion of shallow-seismic body and Rayleigh waves:Geophysics,79,no.6,R247–R261,10.1190/geo2013-0462.1.
Groos,L.,M.Schäfer,T.Forbriger, andT.Bohlen,2017,Application of a complete workflow for 2D elastic full-waveform inversion to recorded shallow-seismic Rayleigh waves:Geophysics,82,no.2,R109–R117,10.1190/geo2016-0284.1.
Hanafy,S. M.,2015,Mapping the Qademah fault with traveltime, surface-wave, and resistivity tomograms:85th Annual International Meeting, SEG, Expanded Abstracts,3347–3351,10.1190/segam2015-5886064.1.
Li,J.,G.Dutta, andG.Schuster,2017a,Wave-equation Qs inversion of skeletonized surface waves:Geophysical Journal International,209,979–991,10.1093/gji/ggx051.
Li,J.,G.Dutta, andG.Schuster,2017b,Skeletonized wave-equation Qs tomography using surface waves:87th Annual International Meeting, SEG, Expanded Abstracts,2726–2731,10.1190/segam2017-17784736.1.
Li,J.,Z.Feng, andG.Schuster,2017c,Wave-equation dispersion inversion:Geophysical Journal International,208,1567–1578,10.1093/gji/ggw465.
Li,J., andG.Schuster,2016,Skeletonized wave equation of surface wave dispersion inversion:86th Annual International Meeting, SEG, Expanded Abstracts,3630–3635,10.1190/segam2016-13770057.1.
Liu,Z.,A.Altheyab,S.Hanafy, andG.Schuster,2016,Imaging near-surface heterogeneities by natural migration of surface waves:86th Annual International Meeting, SEG, Expanded Abstracts,4946–4950,10.1190/segam2016-13845123.1.
Liu,Z.,A.AlTheyab,S. M.Hanafy, andG.Schuster,2017,Imaging near-surface heterogeneities by natural migration of backscattered surface waves: Field data test:Geophysics,82,no.3,S197–S205,10.1190/geo2016-0253.1.
Luo,Y., andG. T.Schuster,1991,Wave-equation traveltime inversion:Geophysics,56,645–653,10.1190/1.1443081.
Masoni,I.,J.-L.Boelle,R.Brossier, andJ.Virieux,2016,Layer stripping FWI for surface waves:86th Annual International Meeting, SEG, Expanded Abstracts,1369–1373,10.1190/segam2016-13859781.1.
Park,C. B.,R. D.Miller, andJ.Xia,1999,Multichannel analysis of surface waves:Geophysics,64,800–808,10.1190/1.1444590.
Pérez Solano,C. A.,D.Donno, andH.Chauris,2014,Alternative waveform inversion for surface wave analysis in 2-D media:Geophysical Journal International,198,1359–1372,10.1093/gji/ggu211.
Xia,J.,R.Miller,C.Park, andG.Tian,2002,Determining Q of near-surface materials from Rayleigh waves:Journal of Applied Geophysics,51,121–129,10.1016/s0926-9851(02)00228-8.
Xia,J.,R. D.Miller, andC. B.Park,1999,Estimation of near-surface shear-wave velocity by inversion of Rayleigh waves:Geophysics,64,691–700,10.1190/1.1444578.
Yuan,Y. O.,F. J.Simons, andE.Bozdag,2015,Multiscale adjoint waveform tomography for surface and body waves:Geophysics,80,no.5,R281–R302,10.1190/geo2014-0461.1.