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Titolo: A PARABOLIC EQUATION FOR POREELASTIC MEDIA
Autore: COLLINS MD; KUPERMAN WA; SIEGMANN WL;
 Indirizzi:
 USN,RES LAB WASHINGTON DC 20375 UNIV CALIF SAN DIEGO,SCRIPPS INST OCEANOG LA JOLLA CA 92093 RENSSELAER POLYTECH INST TROY NY 12180
 Titolo Testata:
 The Journal of the Acoustical Society of America
fascicolo: 3,
volume: 98,
anno: 1995,
pagine: 1645  1656
 SICI:
 00014966(1995)98:3<1645:APEFPM>2.0.ZU;2U
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 WAVEPROPAGATION; ACOUSTIC PROPAGATION; OCEAN; BOTTOM; REFLECTION; APPROXIMATION; INTERFACE; DEPTH;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Science Citation Index Expanded
 Citazioni:
 38
 Recensione:
 Indirizzi per estratti:



 Citazione:
 M.D. Collins et al., "A PARABOLIC EQUATION FOR POREELASTIC MEDIA", The Journal of the Acoustical Society of America, 98(3), 1995, pp. 16451656
Abstract
The parabolic equation (PE) method is extended to handle problems involving poreelastic layers [M. A. Blot, ''Theory of propagation of elastic waves in a fluidsaturated porous solid,'' J. Acoust. Sec. Am. 28, 168191 (1956)]. The equations of motion are derived for heterogeneous poreelastic media. Interface conditions that are appropriate for the PE method are derived for coupling to fluid and elastic layers. Forthe twodimensional geometry (range and depth) that is representativeof many problems in ocean acoustics, the equations of motion reduce to three coupled equations that factor into outgoing and incoming wave equations (the standard formulation has a redundant equation). The outgoing wave equation is solved with the PE method using rational approximations. The poreelastic PE, which is a generalization of the elastic PE, is an efficient approach for solving rangedependent propagationproblems involving an ocean overlying a poreelastic sediment. The selfstarter is generalized to handle compressional and shear sources inporeelastic layers. The coefficients of the poreelastic wave equation are derived from a set of natural parameters. (C) 1995 Acoustical Society of America.
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Documento generato il 25/09/20 alle ore 00:38:09