Research Information System
NATO TU Black Sea Project Ecosystem Jodeling as a Management Tool for the Black Sea, ZORI ROSSII, Ukraine, 15 - 19 June 1997, vol.47, pp.65-76, (Full Text)
This work constitutes an initial effort for studying the removal and/or oxidation rates of hydrogen sulfide at different surfaces of the suboxic zone of the Black Sea. The measurements were made by mixing waters from the suboxic zone (sigma(theta)=15.70-16.20) and from the upper layer of the anoxic zone (sigma(theta)=16.50). The half-life of H2S removal within the interior of cyclonic gyre was found to be twice that measured in the rim current region close to the Bosphorus northern exit, whereas the largest half-lives were measured in the anticyclonic eddy. Fine particle layer (FPL), as displayed by minima in the % light transmission, was also studied for the vertical distributions of particulate iron and manganese. In the cyclonic system, the FPL was not as pronounced as in the anticyclonic eddy. The concentrations of particulate Fe & Mn were also determined in order to visualize the mutual interactions between particulate forms of iron, manganese and hydrogen sulfide, in samples which were filtered through 1.2 mu m microfiber filters.