Seasonal Hydrogen Sulfide Zones of the Northwestern Black Sea Shelf: Nature, Dynamics, Prediction

  • Dmitry Ya FashchukEmail author
Part of the Environmental Science and Engineering book series (ESE)


In September, 1973 the expedition of the Odessa Branch of Institute of Biology of the Southern Seas (OdO INBYUM) has found for the first time mass kill of benthic organisms between mouths of the Kiliya arm of the Danube and Dniester estuary on the area of 3,500 km2 with depths from 10 to 20 m (Salsky 1977). The number of dead hydrobionts during this period reached 500 thousand tons. Thus, in the Zhebriyansk bay adjoining the Danube, near the coast there was a large concentration of half dead passive bottom fish. Since then the similar events which were named “suffocation”, during the summer—autumn period (from June to September) after offshore storms (under northerlies) are repeated from 4 to 10 times, being accompanied with “outbursts” of waters with unusual claybank color and hydrogen sulfide smell to the surface in the coastal zone (Fashchuk 1981). Near-bottom water, fishing gears, devices and ground lifted in the same time from the sea bottom on the open shelf sites at large distance from the coast have the similar smell


Hydrogen Sulfide Anaerobic Zone Hypoxia Zone Water Hypoxia Oxygen Regime 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Authors and Affiliations

  1. 1.Institute of GeographyRussian Academy of SciencesMoscowRussia

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