The influence of topography on the propagation and scattering of surface waves

Details The influence of topography on the propagation and scattering of surface waves The influence of topography on the propagation and scattering of surface waves

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pepi...44..226s&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 44, Issue 3, p. 226-241.

Physics

34

Scientific paper

The effects of topography on three dimensional surface-wave scattering and surface-wave conversions is treated in the Born approximation. Surface-wave scattering by topography is compared with surface-wave scattering by a mountain root model. The interference effects between surface waves scattered by different parts of a heterogeneity are analysed by considering Fraunhofer diffraction for surface waves. For a smooth heterogeneity a relation is established between the interaction terms and the phase speed derivatives. The partial derivatives of the phase speed c with respect to the topography height h for Love (L) and Rayleigh (R) waves are ? Phase speed perturbations due to topography can amount to 1-2% and cannot be ignored in surface-wave studies.

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