The dependence of the refractive index of artificial and natural Baltic seawater on temperature, n=,(T), has been investigated.The measurements have been carried out at different wavelengths of visible radiation.A second dependence of the refractive index on temperature has been observed. The changes of refractive index with depth, n=n(z), have been investigated in field measurements in the Baltic Sea. The influence of crude oil emulsion on the refractive index is discussed.
A general problem of determining water inherent optical properties from natural light radiance distribution in the sea and its depth dependency is analysed. Expressions for light-beam attenuation coefficient of practical significance are obtained. The presence of internal sources of light energy like fluorescence and Raman scattering by water molecules is included in consideration.
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.