title: Coupled perturbed modes and internal solitary waves.
abstract: Coupled perturbed mode theory combines conventional coupled modes and perturbation theory. The theory is used to directly calculate mode coupling in a range-dependent shallow water problem involving propagation through continental shelf internal solitary waves. The solitary waves considered are thermocline depressions, separating well-mixed upper and lower layers. The method is fast and accurate. Results highlight mode coupling associated with internal solitary waves, and mode capture or loss to and from the discrete mode spectrum.
authors.affiliation: Department of Physics, University of Auckland, Private Bag 92019, Auckland, New Zealand.
authors.forename: C J
authors.initials: CJ
authors.lastname: Higham
authors.forename: C T
authors.initials: CT
authors.lastname: Tindle