Investigation of the loss of sound signals in the presence of Eddy in a hypothetical area

Marine phenomena that disturb the stratification cause oscillations in the acoustic signals. Among them, Eddies can be effective factors in mixing the ocean and create significant disturbances in the sound field. In this paper, the different parameters of Eddy and the effects of Eddy on sound propagation were analyzed in a hypothetical environment and conditions, and the amount and way of loss of sound signals in the presence of Eddy were also determined. The analyses showed that when the sound source is over the Eddy and near the surface, the sound propagation is limited to the surface sound channel. But when the sound source is in the mid-depth or under the Eddy, the sound propagation expands and dark spots decrease. in this condition (when the sound source is in the middle depth) with the increase in speed and radius of the Eddy, the amount of loss increases too.