Weak chaos in an area-preserving mapping for sound ray propagation

Frederick D. Tappert, Michael G. Brown, Gustavo Goñi

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


A nonseparable underwater acoustic wave propagation problem is studied in the geometric limit. The combination of internal refraction and reflecting boundaries leads to a noncontinuously differentiable area-preserving mapping, to which the KAM theorem does not apply. The phenomenon of weak chaos, wherein an arbitrarily small perturbation to the separable problem causes observable chaotic behavior, is shown to occur.

Original languageEnglish (US)
Pages (from-to)181-185
Number of pages5
JournalPhysics Letters A
Issue number4-5
StatePublished - Mar 4 1991

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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