FIELD: physics. ^ SUBSTANCE: substance of invention consists in method for determination of properties of liquid filling layer in medium, as well as properties of medium and layer. Crack vibrations are registered. Wave characteristics of standing boundary waves that are distributed along crack surfaces are defined on the basis of registered vibrations with account of medium and liquid properties. Method is based on analysis of vibrations of areas filled with liquid on the basis of boundary waves that are distributed in their surfaces. ^ EFFECT: simplicity of data processing specific for it, efficient monitoring of liquid-filled areas, which may be performed on-line. ^ 2 cl, 1 dwg
