Application of the WKBJ Green's function to acoustic propagation in horizontally stratified oceans

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Abstract

The Green's function (response to an impulsive point source) for ocean acoustic propagation is found using the WKBJ seismogram technique [Chapman, Geophys. J. R. Astron. Soc. 54, 481–518 (1978)]. It is shown that the WKBJ Green's function reduces to geometric ray theory; in the vicinity of caustics it gives the well-known Airy function range dependence of each harmonic component of the acoustic field. Arrival patterns constructed using the WKBJ Green's function are in excellent agreement with a solution to the parabolic equation (PE) except when the source and/or receiver depth is near the turning depth of a geometric ray. Agreement with a measured arrival pattern is also found to be good.

Original languageEnglish (US)
Pages (from-to)1427-1432
Number of pages6
JournalJournal of the Acoustical Society of America
Volume71
Issue number6
DOIs
StatePublished - Jun 1 1982
Externally publishedYes

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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