Proceedings of the International scientific and practical conference ―Education and Scientific Progress‖ (April 24-26, 2026) / Publisher website: www.naukainfo.com. – Manchester, United Kingdom, 2026. - 218 p.

140 then, under the influence of the flow, the jet moved in the direction of the flow. At the same time, at a distance of approximately x=(0.5-0.75)H, the first vortex structure was formed, which had a length of approximately x=0.25H and a transverse dimension in the vertical direction of about z=0.15H. At a distance of about x=H, another large-scale vortex structure of larger dimensions was observed, which merged with the previous structure and began to move towards the bottom of the channel due to the braking of the flow in the aft part of the seamount. At a distance of about x=2.5H, another vortex structure occurred, which combined all the colored dyes used during the visual researches, and this structure in the form of a colored cloud reached dimensions almost the height of the seamount model in both horizontal and vertical directions, reaching the middle of the depth above the seamount surface. Further, this colored cloud dissipated and degenerated and its particles reached both the water surface and the bottom surface. а b Fig. 3. Visualization of the Atlantis II seamount model for the coordinates of the red dye supply (x=-0.05H; y=0; z=-0.2H):the side (a) and the top (b) The colored black dye first moved upward, skirting the surface of the seamount, and then, taking the form of small-scale vortex and oscillatory jet flows, deviated to the bottom surface and eventually merged with other colored jets into a large-scale colored cloud. The results of visual researches, which were recorded above the water surface in the x-z plane (Fig. 3a), showed that when approaching the surface of the seamount