статья в журнале

Ru

Vestnik Moskovskogo Universiteta, Seriya 5: Geografiya

ISSN:05799414
eSSN:0579-9414

2020

The vertical distribution of oxygen and hydrogen sulphide, and the position of suboxic zone boundaries are discussed basing on the results of three 2016 expeditions of the Federal State Budget Scientific Institution «Marine Hydrophysical Institute of RAS» in the central part of the Black Sea (within the economic zone of the Russian Federation). The position of the upper boundary of the suboxic zone (the 10 uM isooxigen) was subjected to seasonal and synoptic changes; as a result the depth of suboxic zone in the central part of the sea varied within 0,25-0,30 kg/m3 in sigma-t scale which is about 10 m in the depth scale. The position of the 3uM isosulphide which separates the suboxic and the hydrogen sulphide zones in the central Black Sea has not changed in the last 50 years and corresponds to the isopycnic surface of ot 16,10-16,15 kg/m3. In deep waters of the Black Sea (below 1750 m) the concentration of hydrogen sulphide gradually increases, which, however, requires confirmation by in-situ measurements over a longer period. © 2020 Moskovskij Universitet. All rights reserved.

Hydrogen sulphide zone, Isopycnic surfaces, Suboxic zone, The Black Sea

2020-12-30 16:10:19