Damping effect of monolayers on surface wave motion in a liquid

Observing Marine Pollution with Synthetic Aperture Radar

“…The damping of short ocean surface waves by surfactant films is a well investigated phenomenon (Lucassen-Reynders and Lucassen, 1969;Huhnerfuss and Garrett, 1981;Lucassen, 1982;Huhnerfuss, 1986;Ermakov et al, 1986;Alpers and Huhnerfuss, 1988;1989;Wu, 1989;Wei and Wu, 1992;Frysinger et al, 1992;Onstott and Rufenach, 1992;Huhnerfuss et al, 1994;. The theory of rheology of air-water interfaces predicts a maximum in the frequency response of the ratio of the damping coefficient of short-gravity waves for water covered by an organic surface film to the coefficient for a pure water surface (Cini and Lombardini 1978). The theoretical analysis, based upon the Navier-Stokes equation and developed for the case of small ripples on an interface covered by a surface-active substance, has been extended by with a formalism which includes both soluble and insoluble monomolecular films for the two coexisting modal solutions: the Laplace or transversal mode and the Marangoni or longitudinal mode , Fiscella et al 1985a).…”

High resolution COSMO - SkyMed SAR images for oil spills automatic detection

“…Measuring the slickinduced damping of wind generated short-gravity ocean waves it is possible to obtain useful data for the characterization of ocean slicks on a thermodynamic basis [6]. According to the theory of the rheology of air-water interface [7] [8], the ratio between the damping coefficients of waves whose water is covered by slick and those of pure water shows a maximum. Starting from the work of Levich [9], which is based on the Navier-Stokes equation, Cini et al [10] have developed a mathematical formulation for small ripples at air -sea interface covered by a surfactant, for both soluble and insoluble films.…”

Emission and reflection from a thin oil film over a rough sea surface for optical application

“…In this paper, two models are then studied. The first one [13]- [15] does not depend on the thickness of the oil film, whereas the second one [16] depends on the thickness.…”