Archives of Acoustics, 16, 3-4, pp. 571-579, 1991

Acoustic scattering affected by monomolecular films spread over a wind-driven water surface

S. J. Pogorzelski
Environmental Acoustics Laboratory University of Gdańsk, 80-952 Gdańsk, Wita Stwosza 57

A spectrum of amplitude fluctuations of the ultrasonic signal scattered from a wind-created water surface covered with an oil substance monolayer of well-defined viscoelastic properties was examined under laboratory conditions. The presence of an oil film causes a shift of the peak frequency towards higher frequencies and increases the fall-off on the high-frequency band of the spectrum if compared to clean surface scattering. The effect turned out to be unequivocally related to rheological parameters of the given monolayer film.
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