Cycle Distance in Guided Propagation
The concept of cycle distance is reviewed, drawing initially on recent studies by C T Tindle, S G Payne and the author. Note that in underwater acoustics the bottom loss and the cycle distance together control an important part of the attenuation, and this is the central theme of the work cited. For a given mode it is not easy to find a definition of cycle distance that is both precise and generally applicable; two new attempts are described here. The most successful of these is in terms of group velocity; and its implications, including those for bottom interaction, are still being examined.
KeywordsGroup Velocity Acoustical Society Guide Propagation Underwater Acoustics Ocean Acoustics
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