3rd French conference on acoustics
J. Phys. IV France 04 (1994) C5-1079-C5-1082
Variations of tomography signals in shallow water due to bottom topography irregularitiesM.I. TAROUDAKIS1, 2
1 Foundation for Research and Technology-Hellas, Institute of Applied and Computational Mathematics, P.O. Box 1527, 711 10 Heraklion Crete, Greece
2 University of Crete, Department of Mathematics, P.O. Box 1470, 714 09 Heraklion Crete, Greece
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.
© EDP Sciences 1994