Surface wave holography

Snieder, R.K.

doi:10.1007/978-94-009-3899-1_14

Cited by 14 publications

(13 citation statements)

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“…In this case, numerical tests of the method should be performed to understand the effect of the distance of acquisition line to the scatterer to be able to detect it. For example, the relation between the measurement line and location of the scatterer is investigated by Herman et al (2000) and Snieder (1987) with different methods. Besides the medium properties, acquisition geometry (line, circular, orthogonal, etc.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…archeological ruins) and shallow water reservoirs. Snieder (1987) uses scattered surface waves to reconstruct lateral heterogeneities. Using scattered surface waves and elastodynamic wave theory Blonk et al (1995) detected a large object while Herman et al (2000) imaged small objects located in the first few metres of a weathered layer.…”

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confidence: 99%

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Inverse scattering of surface waves: imaging of near-surface heterogeneities

Kaslilar

2007

Geophysical Journal International

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S U M M A R YAn efficient inverse scattering method is developed for imaging near-surface heterogeneities using scattered surface waves. Three dimensional elastodynamic wave propagation and scattering in a laterally invariant embedding medium is considered. The Born Approximation is used and the scattered wavefield is expressed as a domain type integral representation. The computation time of Green's tensor elements is reduced by considering the radial symmetry of the medium. The method is validated by numerical tests. Ultrasonic laboratory data obtained from a scale model experiment are used for imaging the near-surface inhomogeneities caused by an epoxy-filled hole in the surface of an aluminum block. Both synthetic and the scale model tests show that the location, the actual density contrast and the depth of the inhomogeneities are reasonably well estimated.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Inverse scattering of surface waves: imaging of near-surface heterogeneities

Kaslilar

2007

Geophysical Journal International

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“…On the other hand, it has been acknowledged that small isolated impedance discontinuities do exist in the near surface [ Gucunski et al , 1996; Herman and Perkins , 2004] and thus contaminate otherwise coherent seismic events. Solutions have been presented that image the subsurface when scattering can be described by the Born approximation [e.g., Snieder , 1987], but multiple scattering from near‐surface heterogeneity is a mechanism for dispersion: using a laboratory model, we show that multiple‐scattering dispersion can be confused with layer‐based dispersion in a frequency/time analysis using the wrong a priori assumption of a layered model.…”

Section: Introductionmentioning

confidence: 99%

Surface wave dispersion from small vertical scatterers

Wijk¹

2004

Geophysical Research Letters

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[1] Heterogeneity in the subsurface creates conflicting types of dispersion of seismic waves. A laboratory and numerical experiment show that multiple scattering of elastic waves from isolated heterogeneities near the surface not only attenuates, but also delays coherent events. Because scattering off these impedance contrasts is frequency dependent, multiple scattering is a source of dispersion. If ignored, multiple scattering dispersion could be erroneously attributed to a model with horizontal homogeneous layers of different wave speeds.

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“…Several authors used scattered surface waves for imaging cavities, buried objects, or shallow water reservoirs (Snieder, 1987;Herman et al, 2000;Campman and Riyanti, 2007;Kaslilar and Herman, 2006;Kaslilar, 2007). The scattered surface waves are studied in detail in terms of seismic interferometry by Halliday and Curtis (2009).…”

Section: Introductionmentioning

confidence: 99%

Estimating the Location of Scatterers by Seismic Interferometry of Scattered Surface Waves

Harmankaya¹,

Kaslilar²,

Thorbecke³

et al. 2012

Proceedings

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SUMMARYIn this study, non-physical (ghost) scattered surface waves are used to obtain the location of a near-surface scatterer. The ghost is obtained from application of seismic interferometry to only one source at the surface. Different locations for virtual sources are chosen and ghost scattered surface waves for each of these virtual-source locations are retrieved. The retrieved ghost traveltimes are inverted by solving the inverse problem to determine the location of the scatterer. It is seen that the location of the scatterer is reasonably well estimated.

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Surface wave holography

Cited by 14 publications

References 0 publications

Inverse scattering of surface waves: imaging of near-surface heterogeneities

Inverse scattering of surface waves: imaging of near-surface heterogeneities

Surface wave dispersion from small vertical scatterers

Estimating the Location of Scatterers by Seismic Interferometry of Scattered Surface Waves

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