A spatio-temporal dependence between the vertical fluxes of the deposited matter (according to the data of sediment traps (mg/m2/day)) and the mass concentration of suspended matter (mg/L) has been revealed. Using satellite data of the optical range (using the spectral channels of the MODIS–Aqua 531 and 551 nm scanner, the backscattering index by suspended particles (bbp, m–1) was calculated), it became possible to continuously obtain (for the ice-free period) monthly average data on the values of the vertical flux of sedimentary matter from the surface layer for the entire sea.