Mode coupling in a coastal wedge due to quasi-crossing of range-dependent modal eigenvalues

Yanyu Jiang, Qianchu Zhang, Boris Katsnelson

Research output: Contribution to journalArticlepeer-review

Abstract

A specific mechanism of mode coupling in a waveguide propagation is studied when two range-dependent eigenvalues approach each other. This phenomenon is analogous to the so-called quasi-crossing of states in atomic physics (Landau-Zener theory). It is considered for the sound wave propagation in a coastal wedge in the presence of a sound-speed profile. The change in mode composition and the corresponding spatial variability of the sound field are analyzed by using modes coupling equations and the parabolic equation with a field decomposition over adiabatic modes, respectively.

Original languageEnglish
Article number016001
JournalJASA Express Letters
Volume3
Issue number1
DOIs
StatePublished - 1 Jan 2023

Bibliographical note

Publisher Copyright:
© 2023 Author(s).

ASJC Scopus subject areas

  • Music
  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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