AZIMUTHAL -FREQUENCY STRUCTURE OF SOUND FIELD, AT PRESENCE OF INTERNAL SOLITONS ON OCEANIC SHELF.

The results of analysis of dynamic features of azimuthal-frequency structure of sound field is presented in the paper. It is shown that internal soliton cause significant refraction of sound rays propagating not just along front but and under angle more than 10 degrees at internal waves. The results of numerical modeling for hydro acoustic conditions of acoustic trace UD-WVLA of experiment SWARM’95 is presented in paper. The developing of 3D model of broadband source sound field at presence of internal solitons (IS) is presented in given paper. In contrast to models which were used in previous papers of author: [1-3] for theoretical analysis of horizontal refraction and [4, 5] for understanding of experimental data, the approach presented in the given paper allows to analyze horizontal structure of sound field in broad range of angles up to 30