  We experimentally studied a clusterization process in a system of polyamide
tracers that are used for visualizing the flow of liquids on their surface. It
was shown that in a surface structure system appearing on the water surface a
Pareto distribution is formed for normalized cluster density and it is well
described by a C/x^(-n) power-law function. One can suggest that the growth of
a surface structure is defined by the action of surface tension forces, and the
number of surface structures decreases exponentially, while maintaining their
total surface area. We show experimentally the significant role of background
liquid flows on the surface in the clusterization process
