TY - JOUR
T1 - Rays, modes, wavefield structure, and wavefield stability
AU - Brown, Michael G.
AU - Beron-Vera, Francisco J.
AU - Rypina, Irina
AU - Udovydchenkov, Ilya A.
PY - 2005/3/1
Y1 - 2005/3/1
N2 - Sound propagation is considered in range-independent environments and environments consisting of a range-independent background on which a weak range-dependent perturbation is superimposed. Recent work on propagation in both types of environments, involving both ray- and mode-based wavefield descriptions, have focused on the importance of α, a ray-based "stability parameter," and β, a mode-based "waveguide invariant." It is shown that, when β is evaluated using asymptotic mode theory, β= α. Using both ray and mode concepts, known results relating to the manner by which α (or β) controls both the unperturbed wavefield structure and the stability of the perturbed wavefield are briefly reviewed.
AB - Sound propagation is considered in range-independent environments and environments consisting of a range-independent background on which a weak range-dependent perturbation is superimposed. Recent work on propagation in both types of environments, involving both ray- and mode-based wavefield descriptions, have focused on the importance of α, a ray-based "stability parameter," and β, a mode-based "waveguide invariant." It is shown that, when β is evaluated using asymptotic mode theory, β= α. Using both ray and mode concepts, known results relating to the manner by which α (or β) controls both the unperturbed wavefield structure and the stability of the perturbed wavefield are briefly reviewed.
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U2 - 10.1121/1.1854749
DO - 10.1121/1.1854749
M3 - Article
AN - SCOPUS:14844342576
VL - 117
SP - 1607
EP - 1610
JO - Journal of the Acoustical Society of America
JF - Journal of the Acoustical Society of America
SN - 0001-4966
IS - 3 II
ER -