Results 231 to 240 of about 32,021 (259)
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Surface-Wave Group-Velocity Tomography for Shallow Structures
Journal of Environmental & Engineering Geophysics, 1999Because the Rayleigh waves generally have the largest amplitude of all waves generated by a vertical surface impact and because the near-surface shear-wave velocity primarily determines the Rayleigh wave velocity, the Rayleigh waves may be used to image shallow shear-wave structures.
Leland Timothy Long, A.H. Kocaoglu
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A Fast and Reliable Method for Surface Wave Tomography
Pure and Applied Geophysics, 2001— We describe a method to invert regional or global scale surface-wave group or phase-velocity measurements to estimate 2-D models of the distribution and strength of isotropic and azimuthally anisotropic velocity variations. Such maps have at least two purposes in monitoring the nuclear Comprehensive Test-Ban Treaty (CTBT): (1) They can be used as ...
M. P. Barmin +2 more
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Semiclassical Surface Wave Tomography of Isotropic Media
2020We carry out a semiclassical analysis of surface waves in Earth which is stratified near its boundary at some scale comparable to the wave length.
Maarten V. de Hoop, Alexei Iantchenko
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Surface wave tomography to retrieve near surface velocity models
SEG Technical Program Expanded Abstracts 2014, 2014Surface-wave tomography is usually applied at regional or planetary scale but represent an interesting approach also for near surface applications. We present a surface wave dispersion tomography that does not require the construction of phase or group velocity maps and which inverts path-specific dispersion data directly for 3-D Swave velocity ...
SOCCO, LAURA +6 more
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Surface waves tomography and non-linear inversion in the southeast Carpathians
Physics of the Earth and Planetary Interiors, 2006A set of shear-wave velocity models of the lithosphere–asthenosphere system in the southeast Carpathians is determined by the non-linear inversion of surface wave group velocity data, obtained from a tomographic analysis. The local dispersion curves are assembled for the period range 7–150 s, combining regional group velocity measurements and published
RAYKOVA R, PANZA, GIULIANO
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Surface wave tomography studies beneath the Indiansubcontinent
Journal of Geodynamics, 1999Abstract The Rayleigh wave group velocities at periods of 5 to 60 s across more than eightypropagation paths of the Indian subcontinent are used to construct estimated Rayleigh wavegroup velocity distribution maps of the region. Backus and Gilberts inversion theory is appliedfor the surface wave tomography studies.
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Surface Wave Tomography of Southeast Asia
Izvestiya, Atmospheric and Oceanic Physics, 2021A. I. Filippova, O. A. Solovey
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Seismic Tomography Applied to Surface Wave Analysis
1984A method to tomographically image the spatial variation of group velocity across a region of geologic interest has been developed. The tomographic algorithm used represents a development of the Simultaneous Iterative Reconstruction Techniques (SIRT). It includes a ray tracing capability.
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