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Titolo:
THE FLATTENED SURFACE PARABOLIC EQUATION
Autore:
EVANS RB;
Indirizzi:
SCI APPLICAT INT CORP,21 MONTAUK AVE,SUITE 201 NEW LONDON CT 06320
Titolo Testata:
The Journal of the Acoustical Society of America
fascicolo: 4, volume: 104, anno: 1998,
pagine: 2167 - 2173
SICI:
0001-4966(1998)104:4<2167:TFSPE>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
TIME-DOMAIN SOLUTION; PROPAGATION; SCATTERING; ACOUSTICS; MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
R.B. Evans, "THE FLATTENED SURFACE PARABOLIC EQUATION", The Journal of the Acoustical Society of America, 104(4), 1998, pp. 2167-2173

Abstract

A simple surface flattening transformation is applied to the problem of underwater acoustic scattering from an irregular sea surface. The flattened surface elliptic wave equation is factored to obtain a parabolic equation that has the same high angle capability as recent parabolic equation models. The flattened surface parabolic equation contains an additional surface slope term, but includes forward scattering fromthe irregular sea surface. The transformation creates additional volume irregularities and irregularities in the water-sediment interface that the range and depth mesh need to resolve. The surface flattening transformation is easy to implement in a parabolic equation model. It compares very well with results obtained using boundary integral equations. An example is given of scattering at 400 Hz from a sea surface with wave heights of 3 m or nearly a wavelength. (C) 1998 Acoustical Society of America. [S0001-4966(98)01410-6].

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Documento generato il 10/07/20 alle ore 03:12:13