InterCarto. InterGIS (Jan 2017)

USING INFORMATION TECHNOLOGIES FOR ESTIMATING THE WATER QUALITY IN THE EASTERN PART OF THE FINNISH GULF

  • A. R. Alyautdinov,
  • L. A. Ushakova,
  • T. V. Artamonova,
  • A. N. Korshenko,
  • M. P. Pogozeva

DOI
https://doi.org/10.24057/2414-9179-2017-1-23-286-296
Journal volume & issue
Vol. 23, no. 1
pp. 286 – 296

Abstract

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The authors have developed a methodology of implementing of geoinformation technologies to assess the ecological situation in the waters of the eastern part of the Finnish Gulf and the Neva Bay, which is being formed under the influence of a complex system of interacting natural and anthropogenic processes.Spatial data base has been developed by using GIS technologies. Developed database is the backbone for the assessment of the water quality in the eastern part of the Finnish Gulf. The developed database of spatial information will be the main tool for accumulating, systematizing and analyzing the information about hydrochemical state of the waters of the eastern part of the Finnish Gulf and the Neva Bay. As the main indicators characterizing the ecological state of the waters of the eastern part of the Finnish Gulf, the Water Pollution Index (WPI) and E-TRIX eutrophication index have been used. The Water Pollution Index (WPI) is based on the values of the Maximum Permissible Concentration (MPC) of significant pollutants. The E-TRIX eutrophication index is an integrated complex indicator linking the characteristics of the potential level of the primary production of phytoplankton and concentration of nutrients necessary for the development of microalgae. Models of spatial distribution of the calculated values of pollution and eutrophication indicators allow for a preliminary assessment of the ecological situation in the Gulf waters and identify the main areas of pollution. Eutrophication and pollution of individual local areas have a different spatial distribution and differ significantly in pollutant elements. By the results of the work, it can be stated that the most unfavorable waters are the waters of the Neva Bay, which is determined by the anthropogenic load on the water area of the Neva Bay under a specific hydrophysical regime. The ecological state of the waters of the eastern part of the Gulf of Finland is more favorable, which can be explained by the low anthropogenic impact on the central part of the Gulf of Finland.

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