Soil pollution: cartography, risks, decision support systems

Leistungen

In accordance with objectives, work programme and taking into account multidisciplinary nature of the project the main activity have been performed in the following main directions: development of radioecological spatial data analysis, processing and presentation methodology; development of Environmental Decision Support Systems and Specialised Geographical Information Systems, Software development. Representative data bases on surface contamination by Chernobyl radionuclides CS 137 (1978 samples)and SR90 (443 samples) have been prepared along with data base management systems. Two radioecological models "RSOIL" and "RAMIS" of different complexity for the radionuclides vertical migration in soils have been developed, verified and validated. Uncertainty/sensitivity analysis for the radioecological models have been performed. Within the framework of developed methodology comprehensive spatial data analysis of radioactively contaminated territories resulted in deterministic (triangulations, inverse distance weighting, multiquadric equations, etc.) and geostatistical, (simple and ordinary kriging, cokriging) spatial interpolations have been carried out. Prediction maps for CS 137 and SR90 in the Briansk region of Russia have been prepared. Probabilistic and risk mapping with the help of indicator kriging models and conditional stochastic simulations have been carried out. Multilayered electronic maps of Briansk region have been prepared and implemented in a Specialised Geographical Information System. Developed radioecological models and spatial data analysis models are compatible with Specialised Geographical Information System. Special graphical data management system along with soil type maps were prepared. Several important software tools (traditional interpolators with cross-validation possibilities, geostatistical pre and post processors) have been developed and programmed. The main ideas and results of the project have been presented by the project participants at 10 national and international conferences and congresses (Animal conferences of International Association for Mathematical Geology 1995, 1996, 1997; ENVIROSOFT'96; 5th Geostatistical Congress, 30th Geological Congress; International conferences on Artificial Intelligence - AIENG'96, AIHENP'96, ICANN97; first International conference on Chernobyl radiological consequences, etc.). Developed public domain software - geostatistical postprocessor "UpFile+" and advanced postplot system"3Plot" have been distributed via Internet between more than 200 users throughout the world. Project initiated interest in geostatistical analysis of Chernobyl radiological data in Russia, Belarus,Ukraine, Kazakhstan and in Western Europe.

Leistungen

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