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nlin.CD2004
Phase space structure of nonautonomous one-degree-of-freedom Hamiltonian systems with nontrivial time dependence
F. J. Beron-Vera, M. J. Olascoaga, M. G. Brown
It has been recently argued that near-integrable nonautonomous one-degree-of-freedom Hamiltonian systems are constrained by KAM theory even when the time-dependent (nonintegrable)…
nlin.CD2003
Rays, modes, wavefield structure and wavefield stability
M. G. Brown, F. J. Beron-Vera, I. Rypina +1
Sound propagation is considered in range-independent environments and environments consisting of a range-independent background on which a weak range-dependent perturbation is supe…
nlin.CD2001
Ray dynamics in ocean acoustics
Michael G. Brown, John A. Colosi, Steven Tomsovic +3
Recent results relating to ray dynamics in ocean acoustics are reviewed. Attention is focussed on long-range propagation in deep ocean environments. For this class of problems, the…