Abstract
Measurements of bottom reverberation by Mackenzie [K. V. Mackenzie, J. Acoust. Soc. Am. 33, 1498–1504 (1961)] form the basis of a widely used model for bottom reverberation. The smoothed trend of his results is consistent with a general understanding of reverberation, as based on Lambert's law. The present analysis was undertaken to reveal causes of the detailed fluctuations of the reverberation data about the smoothed trend. It was found that interference between direct and surface-reflected paths is the basic cause of fluctuation, but if quantitative agreement with data is to be obtained, then it is necessary to take into account a 3-ft difference between source and receiver depths. A series of comparisons between predictions and data shows the relative influences of various aspects of the experiment on the observed details.
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