Dynamics of Passive Admixture in Surface and Subsurface External Deformation Field above an Ocean Guyot

In the framework of a three-layer quasi-geostrophic model, within the -plane approximation, a numerical investigation has been conducted on the influence of a guyot on the motion of surface and subsurface patches of passive admixture advected by vertically homogeneous zonal currents. The possibility of partial trapping of the admixture by a quasi-stationary topographic vortex in the vicinity of the guyot has been demonstrated. The role of the initial localization (both horizontally and vertically) in the resulting pattern of pollution distribution has been revealed.