The impact on the reflectance in VIS of a type of crude oil film floating on the water surface

This paper reports the reflective features of a water surface covered with an oil film expressed by the dependence of the reflectance on the angle of light incidence and wavelength a nd film thickness with respect to downward and upward light fluxes. The sensitivity of the shape of these functions o n the oil type appears especially strong in case of the upward light fluxes as opposed to downward fluxes. (C)2000 Optical Society of America.