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Titolo:
ELASTIC SCATTERED WAVES FROM A CONTINUOUS AND HETEROGENEOUS LAYER
Autore:
LI XF; HUDSON JA;
Indirizzi:
UNIV CAMBRIDGE,DEPT APPL MATH & THEORET PHYS,SILVER ST CAMBRIDGE CB3 9EW ENGLAND
Titolo Testata:
Geophysical journal international
fascicolo: 1, volume: 121, anno: 1995,
pagine: 82 - 102
SICI:
0956-540X(1995)121:1<82:ESWFAC>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
RANDOMLY INHOMOGENEOUS LITHOSPHERE; MULTIPLE-SCATTERING; CODA WAVES; INTRINSIC ATTENUATION; AMPLITUDE ATTENUATION; LOCAL EARTHQUAKES; SEISMIC-WAVES; UPPER MANTLE; LASA; FLUCTUATIONS;
Keywords:
ELASTIC WAVE THEORY; SCATTERING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
36
Recensione:
Indirizzi per estratti:
Citazione:
X.F. Li e J.A. Hudson, "ELASTIC SCATTERED WAVES FROM A CONTINUOUS AND HETEROGENEOUS LAYER", Geophysical journal international, 121(1), 1995, pp. 82-102

Abstract

Elastic scattering from a continuous and laterally unbounded heterogeneous layer has been formulated using the Born approximation. A general solution of the scattered wave equation for the above-stated medium has been given in terms of a Fourier integral over plane waves. Far-field asymptotic expressions for weak elastic scattering by a finite, continuous and inhomogeneous layer have been presented which agree with earlier results. For perturbations of the two elastic parameters and the density having the same form of spatial variation, the spectrum of plane waves scattered from a heterogeneous layer is expressed as a product of an 'elastic scattering factor' and a 'distribution factor'. Asin earlier results for small-scale heterogeneity, the scattering pattern depends on various combinations of perturbations of elastic parameters and density. In order to show the general characteristics of the elastic wave scattering, some scattering patterns have been given.

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Documento generato il 01/12/20 alle ore 19:22:03