Lipinskaia N.A., Salyuk P.A.
The article analyzes the submesoscale eddies detected in the southern part of Peter the Great Bay in September 2009 as a process influencing the stratification of optically active components in the upper sea layer and the values of the sea brightness coefficients. To analyze the motion of vortices, satellite data of the 2nd level of the average spatial resolution of the MODIS- erra/Aqua, Merris-ENVISAT‐1 spectroradiomers in the fields of sea surface temperature, chlorophyll-a concentration and synthesized RGB images, ship STD data from the SBE19 plus profiler and remote measurements of the spectra of sea brightness coefficients from the handheld hyperspectral radiometer ASD FieldSpec, obtained in a series of coastal expeditions of the POI FEB RAS in September 2009.
As a result, it was found that the eddies are characterized by lower salinity and increased content of colored dissolved organic matter, which may be associated with the influence of the Tumannaya River runoff. The greatest contrast of the vortex relative to adjacent waters is achieved at a wavelength of 412 nm according to remote sensing data. In addition, the contrast is noticeable in remote measurements of chlorophyll-a concentration. The depth of the vortex was 5—7 meters and is completely within the observation area from the satellite in the visible spectral range.
