Ecological Systems and Devices Annotation << Back About heights of infragravitation waves in the fine sea Trubkin I.P. The attempt of reception an analytical dependence of infragravitation wave’s (IGW) height from gravitational wind waves height was undertaken. In a basis of the chosen approach were the model of a regular wave of the final amplitude depending on depth of a reservoir and the parametrical stochastic model known in the theory of automatic control systems, modified by the author with the purpose of realization of nonlinear transformations of casual process . The results of an estimation of characteristics IGW, receiving by modelling fields of excitement in Azov, have shown, that the IGW’s height could be commensurable and even surpass wind wave’s heights in storm conditions.