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THE ROLE OF THE HYDROLOGICAL FACTORS IN THE FORMATION OF FIELD CONCENTRATIONS AND FLUXES OF REDUCED GASES, AND MERCURY IN THE SEA OF AZOV

Yury Fedorov, Yury Fedorov

First published: 2011-06-20https://doi.org/10.5593/sgem2011/s20.175View metrics

Abstract

The paper provides an analysis of long-term field studies in the Sea of Azov. The sea is rich in organic life and is characterized as one of the most bioproductive reservoirs in the world. During the periods of calm weathe r the stratification of water mass forms the fields of hypoxia in some areas of the sea. In the bottom layers of water pockets of hydrogen sulfide and elevated concentrations of methane and mercury are found. Mercury coming from both natural and anthropogenic sources is a priority pollutant for water and sediments. In order to assess th e impact on aquatic organisms it’s important to know not only the content of mercury, but also the predominant forms of its migration. At the same time these ones are closely related to the salinity and physico- chemical conditions at the interface water – sediments. However, these conditions are controlled by the dynamics of water masses, suspended matter, as well as the rate of sedimentation and resuspension of the uppe r layer of sediments. Long-term field observations showed a close relationship between the cycles of hydrogen sulfide, methane, and mercury, on the one hand, and hydrological factors, on the other.

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Publication details

Title
THE ROLE OF THE HYDROLOGICAL FACTORS IN THE FORMATION OF FIELD CONCENTRATIONS AND FLUXES OF REDUCED GASES, AND MERCURY IN THE SEA OF AZOV
Authors
Yury Fedorov, Yury Fedorov
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2011 11th International Multidisciplinary Scientific GeoConference
Publisher
Stef92 Technology
Year
2011
Pages
Not available yet
ISSN
1314-2704
ISBN
Not available yet
Language
en
Publication type
Conference Paper
Keywords
Sea of Azovhydrogen sulfidemercuryhydrological factorsmethanepHEh
References18

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