MODELLING THE EFFECT OF SEISMIC VELOCITY GRADIENTS ON THE CHANGE IN GEOMETRICAL SPREADING ACROSS A BOUNDARY

dc.contributor.author	Baig A.M.
dc.contributor.author	Hron F.
dc.contributor.author	Schmitt D.R.
dc.date.accessioned	2021-03-18T04:39:06Z
dc.date.available	2021-03-18T04:39:06Z
dc.date.issued	2001
dc.identifier	https://www.elibrary.ru/item.asp?id=1205153
dc.identifier.citation	Geophysical Journal International, 2001, 146, 3, 679-690
dc.identifier.issn	0956-540X
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/26902
dc.description.abstract	This paper begins with a review on how rays may be traced though isotropic inhomogeneous media separated by curved interfaces. The results are applied to the case of a layer over a half-space in which the seismic velocity varies linearly with depth and the interface is a horizontal plane. The presence of this type of velocity inhomogeneity will affect the observed amplitudes through its influence on the discontinuity in geometrical spreading at an interface. Analytical results will be compared to an approximate method for evaluation of geometrical spreading to ensure their accuracy. We show that the focusing effects due to the presence of velocity gradients become significant in our examples only for large angles of incidence.
dc.subject	INHOMOGENEOUS MEDIA
dc.subject	RAY THEORY
dc.subject	RAY TRACING
dc.subject	REFLECTION SEISMOLOGY
dc.title	MODELLING THE EFFECT OF SEISMIC VELOCITY GRADIENTS ON THE CHANGE IN GEOMETRICAL SPREADING ACROSS A BOUNDARY
dc.type	Статья

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