Acoustic fields in the ocean bottom

Author

Korochentsev, V.I. ; Gaifullin, M.B. ; Deshner, A.I. ; Unru, P.P. ; Gubko, L.V.

Author_Institution

Far Eastern State Tech. Univ., Vladivostock, Russia

fYear

1998

fDate

15-17 Apr 1998

Firstpage

138

Lastpage

141

Abstract

A strict solution of the Helmholtz´s nonuniform equation in the form of the Green´s function for two liquid media with an arbitrary geometry of the boundaries has been obtained. Examples of the calculation of the two- and three-element array, located in the confined space, bounded by the three finite impedance planes are cited. The decrease of the velocity of the refracted waves at the bottom-side half-space has been proved to take place when the incidence of the centrally symmetric waves (e.g. cylindrical and spherical waves) to the flat boundary of the two liquid media is under the angles greater than the critical ones

Keywords

Green´s function methods; Helmholtz equations; acoustic arrays; acoustic field; acoustic wave refraction; seafloor phenomena; underwater sound; Green function; Helmholtz nonuniform equation; acoustic fields; bottom-side half-space; centrally symmetric waves; confined space; cylindrical waves; finite impedance planes; flat boundary; liquid medium boundaries; ocean bottom; refracted waves; spherical waves; three-element array; two-element array; Acoustic reflection; Acoustic waves; Equations; Geometry; Inverse problems; Oceans; Sea surface; Surface acoustic waves; Surface waves; Tiles;

fLanguage

English

Publisher

ieee

Conference_Titel

Underwater Technology, 1998. Proceedings of the 1998 International Symposium on

Conference_Location

Tokyo

Print_ISBN

0-7803-4273-9

Type

conf

DOI

10.1109/UT.1998.670078

Filename

670078