Abstract
In this paper, reverberation loss is considered as a basic physical quantity to describe shallow water reverberation, and reverberation loss versus time was calculated by using three models: the ray-based model, the WKBZ mode models with account taken and not taken of the effects of complex eigenvalues. Numerical simulations show that the effects of complex eigenvalues cannot be neglected, and at medium ranges the reverberation loss from the ray-based model is consistent with that from the WKBZ mode model with the effects of complex eigenvalues taken into account. The experimental results shows that reverberation loss is not dependent on the bandwidth. Reverberation in shallow swater with a thermocline shows strong depth dependence, and the theoretical geometric mean rule of reverberation intensity was demonstrated by experiment.
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