Abstract
The paper presents a quantitative study of the effect of the bottom topography on the acoustic signals used in ocean acoustic tomography applications. The study is restricted to shallow water areas where the importance of the bottom boundary in modelling acoustic propagation is more pronounced. It is shown that significant variations of the signal are expected due to the presence of some local boundary irregularity, being of the same order as regards the «useful» variations used for the data inversions. It is concluded that an accurate bottom description is needed to be used in connection with an reliable model handling acoustic propagation in range-dependent environments for all ocean acoustic tomography applications
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