Analysis of the Influence of Warm Eddy in Winter and Summer on the Sound Propagation Characteristics in the Mid-Latitude Typical Ocean Environment

This paper aims at analyzing the influence of the warm eddy on the sound propagation characteristics in winter and summer in the Mid-Latitude typical ocean environment. The 10-year historical monthly temperature and salt data provided by Argo dataset is firstly used to construct the static climatological sound speed field in January and July. Then an analytical eddy model established by Henrick is employed to construct the complete sound speed field in the presence of warm eddy. The comparison results of sound propagation indicate that the warm eddy facilitates the formation of the surface sound duct in winter.