Detection of oil pollution in the form of emulsion and individual films on the water surface of the Bering Sea using hyperspectral visible radiometry in August 2013
I.E. Stepochkin1, P.A. Salyuk1, V.A. Kachur2
1V.I. Il'ichev Pacific Oceanological Institute, Vladivostok, Russia
2Institute of Automation and Control Prosesses Far Easten Branch of the Russian Academy of Science, Vladivostok, Russia
Keywords: ocean optics, remote sensing reflectance, oil spill, chlorophyll a, dissolved organic matter, emulsion, the Bering Sea
Abstract
We analyze the remote sensing reflectance spectra of seawater measured from the shipboard in the area of the Urals oil spill in the form of emulsion and individual films on the sea surface. The pollution was detected in the Bering Sea near Navarin Cape on August 4, 2013, during the voyage of the training ship "Professor Khljustin". In situ data from flow-through fluorometric measurements of the chlorophyll a and colored dissolved organic matter concentrations at a depth of 4 m, not influenced by contamination detected, were also used. The regression relations between remote and in situ measurements in clean and oil-polluted waters are analyzed. A preliminary version of the technique for detecting oil pollution on the sea surface, which is in emulsified form and in the form of small films of about 1 m2 in area, is developed on the basis of remote measurements of the seawater spectra.
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