Physical Oceanography, Vol.
4, November, 2011 (Ukrainian Original No.
4, July–August, 2011)
ANALYSIS OF OBSERVATIONS AND METHODS FOR CALCULATING
HYDROPHYSICAL FIELDS IN THE OCEAN
INTENSIFICATION OF LIGHT SCATTERING AS A RESULT OF MIXING
OF PURE WATERS WITH DIFFERENT DENSITIES
E. B. Shybanov,
M. E. Lee,
and G. Zibordi
In experiments aimed at measuring the spectral volume scattering function of light, we obtain an addi-
tional confirmation of the existence of two-dimensional inhomogeneities of water on scales of 10
m. In the case of mixing of pure water with small amounts of filtered water with different tempera-
ture or salinity, we observe an 1.8–4.5-fold intensification of the scattering of light in the entire range of
angles. It is shown that this effect can be explained neither by turbulence nor by the formation of dissi-
pative structures. We estimate the sizes of inhomogeneities affecting the spectral volume scattering
function of light.
Keywords: scattering of light, pure water, cluster, defect of local density, optical quasiparticle.
As a theory based on the principles of thermodynamic equilibrium of liquids, hydrooptics encounters prin-
cipal difficulties in the interpretation of high degrees of anisotropy of the scattering of light observed both in
pure seawater and in fresh water purified with the help of a filter with pores
in diameter. The explana-
tion of this phenomenon can be found in , where it is shown that fine particles contained in these waters are
located in a two-dimensional space of structural inhomogeneities of water (defects of local density) affecting the
effective refraction index of the defect. In this connection, it was assumed that the structural defects of water
can be filled with another liquid, e.g., in the case of mixing of waters with different temperatures or salinities.
This leads to an optical effect of intensification of scattering explained both by the difference between the refrac-
tion indices of the main mass of water and foreign waters, as well as by the specific features of distribution of
the admixture in the space. The results of measurements of the volume scattering function can be used to study
the distribution of foreign water. The aim of the present work is to confirm the hypothesis of two-dimensional
inhomogeneity of water.
An experiment aimed at measuring the spectral volume scattering function of pure water mixed with small
Marine Hydrophysical Institute, Ukrainian National Academy of Sciences, Sevastopol, Ukraine.
European Commission Joint Research Center, Institute for Environmental Protection and Research, Ispra, Italy.
Corresponding author; e-mail: firstname.lastname@example.org.
Translated from Morskoi Gidrofizicheskii Zhurnal, No.
36–42, July–August, 2011. Original article submitted March 25, 2010;
revision submitted April 9, 2010.
254 0928–5105/11/2104–0254 © 2011 Springer Science+Business Media, Inc.