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1

The reflection of light from serawater polluted with thin non-homogenous oil layer:theoretical dependence on wavelength, thickness and angle of incidence

100%
Otremba Z.
Oceanological Studies
|
1994
|
issue 66/7
137-148
EN
The paper contains the results of computation of the spectral-directional coefficient of light reflection from aseawater polluted with the thin oil layer. A multilayer model of oil contaminated surface was used to work out the computation algorithm. The results are shown as grephs of function of wavelength, thickness and angle of incidence. Apart from presenting the possibilities of the program packet, a few general conclusions are formulated.
2

The impact of non-homogeneity of oil films covering the sea surface on light transmission: theoretical calculations

100%
Otremba Z., Targowski W.
Oceanological Studies
|
1994
|
issue 66/7
3-14
EN
This paper presents the results of numerical calculation of spectral-directional tramsissivity for a non-homogenous thin oil layer, where selected profiles of complex refractivity in the transient layers were assumed.The differences resulting from assuming various types of non-homogeneity in the transient oil layers are shown graphically with transmissivity plotted against wavelength, tickness and the angle of light beam incidence.The method is also suitable for transmissivity prediction for thin interphase layers forming between any media.
3

The modification of light flux leaving a wind-roughened, oil covered sea surface: example of computations for hallow seas

100%
Otremba Z., Piskozub P. J., Piskozub J.
|
2000
|
vol. 29
|
issue 1
117-133
EN
This paper presents chosen results of modelling of upward light flux over a rough sea surface covered with an oil film. In upward irradiance computations (by means of Monte Carlo method), the optical parameters of two types of water were taken into consideration: water typical for bays of the Baltic Sea (Case 2 water) and ocean (Case 1) waters, both covered with an oil layer 5 mum thick (Romashkino). Coefficients of reflectance and transmission for the oil film were used for the calculations. These coefficients were obtained through the mathematical simulation of the route of light rays, both upward and downward, through the oil film. The obtained results show that oil films influence upward light fluxes over the sea surface, and that this influence depends on the depth and roughness of the sea. The analyses of oil film visibility on sea surfaces revealed also the influence of the direction of observation.
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