Model of evaporation duct

Abstract

This paper investigates the phenomenon of an evaporation duct and the possibility of waves to propagate inside it. This phenomenon arises as a result of permittivity gradient in the space above the water surface. The model representing the evaporation duct as a multi-layer structure is suggested. The electromagnetic field intensity in every point of model is found by means of using Green's functions method. The paper presents both strict and approximated expressions. The simplest case of Hertz dipole in free space confirms the validity of proposed approach.