Global geoenvironmental problems: Black Sea basin

The issue of the geoenvironmental state of Black Sea basin, the final basin receiving the runoff of many large rivers of the European continent (Danube, Dnieper, Don, etc.) and considerable runoff from the nearby watersheds, including Turkish, is considered. The extent and geoenvironmental consequen...

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Bibliographic Details
Published in:Water resources 2011-12, Vol.38 (7), p.849-858
Main Author: Kudelsky, A. V.
Format: Article
Language:English
Subjects:
Aquatic Pollution
Earth and Environmental Science
Earth Sciences
Environment
Freshwater
Geochemistry
Geography
Hydrogen sulfide
Hydrogeology
Hydrology
Hydrology/Water Resources
Industrial pollution
Interception
Metamorphism
Pipelines
Rifting
River basins
River flow
Rivers
Runoff
Seawater
Sulfate reduction
Sulfates
Waste Water Technology
Water balance
Water Management
Water pollution
Water Pollution Control
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Summary:The issue of the geoenvironmental state of Black Sea basin, the final basin receiving the runoff of many large rivers of the European continent (Danube, Dnieper, Don, etc.) and considerable runoff from the nearby watersheds, including Turkish, is considered. The extent and geoenvironmental consequences of the large-scale changes in the hydrology, water balance, and hydrochemistry of the sea basin under the effect hydrotechnical interception and industrial pollution of river runoff are discussed. The genetic role of Black Sea rifting in one of the world’s largest oil-and-gas-bearing basins with its inherent thermal and geochemical processes, geoenvironmental conditions, and risks is emphasized. Improved information is given about the genesis of hydrogen sulfide dissolved in seawater and related to the processes of geochemical sulfate reduction of silt water sulfates under the effect of hydrocarbon gases, which mostly form in zones of deep catagenesis of sedimentary formations and lower crust rock metamorphism. It is emphasized that the ecological stability of a sea basin showing such complex and contradictory relationships with natural and technogenic objects and processes can be ensured only by joint and well coordinated efforts of the countries of the Black Sea and nearby regions aimed on rational nature and water management, including when laying pipelines on Black Sea bed and developing the power resources of the Black Sea oil-and-gas-bearing basin.
ISSN:0097-8078
1608-344X
DOI:10.1134/S0097807811070086