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Global SV wave upper mantle model
We present a summary of all our seismological models based on surface wave observations. First, wen have updated our global SV model that is based on the waveform modelling of more than 3 millions Rayleigh waves recorded since 1976. The tomographic model is built using the same automated scheme as was presented in Debayle et al., GRL 2016, while the ...stephanie durand +3 more
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P-SV wave scattering by coal-seam inhomogeneities
Geophysics, 1985Abstract The dynamic finite-element method is used to calculate the normal incidence P-SV guided-wave scattering spectra of 124 models of coal-seam obstructions commonly encountered in in-seam seismology. The models are faults of varying throw and dip; thick faults with an associated region of fracturing; dikes of varying width ...
S. A. Edwards, M. W. Asten, L. A. Drake
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Rapid map and inversion of P-SV waves
Geophysics, 1991Abstract Multicomponent seismic recordings are currently being analyzed in an attempt to improve conventional P-wave sections and to find and use rock properties associated with shear waves (e.g. Dohr, 1985; Danbom and Dominico, 1986).
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Diffraction of SV Waves by Circular Canyons of Various Depths
Journal of Engineering Mechanics, 1989The scattering and diffraction of plane SV waves by circular cylindrical canyons of various depths in an elastic half space is studied in this paper. The canyons studied here range from shallow circular to semicircular canyons in an elastic half-space. The series of Bessel function expansions is used to solve the problem.
Vincent W. Lee, Hong Cao
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The Lateral Shift of SV-Wave on the Free Surface of Stratum
Advanced Materials Research, 2013Using the phase shift of reflection coefficient of SV seismic wave at the free surface of stratum, we derived the lateral shift of total reflected SV seismic wave, given formulae of it, and drawn the curves of lateral shift, The results show that reflected wave of VS-wave exists negative shift; for glancing wave or angle of incidence being near the ...
An Ling Wang, Fu Ping Liu
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The Shift Time of SV-Wave on the Free Surface of Stratum
Applied Mechanics and Materials, 2014Using the phase shift of reflection coefficient of SV seismic wave at the free surface of stratum, we derived the the shift time of total reflected SV seismic wave, given formulae of shift timeand drawn the curves of shift time. The results show that reflected wave of VS-wave exists negative shift;for glancing wave or angle of incidence being near the ...
An Ling Wang, Fu Ping Liu
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A note on the sensitivity of SV wave scattering to surface-breaking cracks
Ultrasonics, 2005The results presented in this communication show that the conventional configuration adopting a shear vertical wave at 45 degrees of incidence to detect cracks breaking the surface opposite the one on which the inspecting transducer is placed is not optimal when the crack depth is of the order of one wavelength of the inspecting wave or smaller. Angles
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Diffraction of SV waves by underground, circular, cylindrical cavities
Soil Dynamics and Earthquake Engineering, 1992The scattering and diffraction of plane SV waves underground, circular, cylindrical cavities at various depths in an elastic half space is studied in this paper. The cavities, studied here, are at depths of two to five cavity radii, measured from the surface to the center of the cavity.
V.W Lee, J Karl
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Infuence of Latertal Shift on Normal Moveout of SV-Wave
Applied Mechanics and Materials, 2014Using the phase shift of reflection coefficient of SH seismic wave at the interface of strata, we derived the lateral shift and group time delay of total reflected SV-wave, given formulae of normal moveout of lateral shift, discussed the influence of lateral shift on normal moveout of SV-wave, and drawn the curves of normal moveout of lateral shift and
An Ling Wang, Fu Ping Liu
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Moveout approximations for P- and SV-waves in VTI media
Geophysics, 2013ABSTRACT We tested alternative expressions for the P- and SV-wave moveout formulas in VTI media based on the weak-anisotropy (WA) approximation. Our moveout formulas represent expansions with respect to small parameters, which are related to deviations of anisotropy from isotropy. First-order P-wave formulas depend on four parameters,
Véronique Farra, Ivan Pšenčík
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