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Information × Registration Number 0221U105207, 0118U004582 , R & D reports Title Complex studies of the behavior of Chernobyl origin radionuclides in aquatic systems in the late post-accident period popup.stage_title Head Voitsekhovych Oleh V, Registration Date 14-06-2021 Organization Ukrainian Hydrometeorological Institute of the State Emergency Service of Ukraine and the National Academy of Sciences of Ukraine popup.description2 The work was performed in two Chapter: «Study of the behaviour of radionuclides in natural water-soil systems at watersheds and reservoirs of the Chernobyl Exclusion Zone and the far zone of radioactive fallout» (Chapter 1) and «Study of the transformation processes of the radioactive contamination of the Chernobyl cooling pond during the water level reduction during the stage of its decommissioning» (Chapter 2), - the results of which are given in Volume 1 and Volume 2 of the final report, respectively. Based on the generalization and systematization of previous data, new data were obtained during implementation of the complex of experimental (laboratory, field) and monitoring studies, investigated the natural processes of flushing and formation of long-term pollution in the natural water-soil complex at test watersheds, ChNPP reservoirs and reservoirs areas of the far zone radioactive fallout. A comparative analysis of the vertical and lateral migration of radionuclides in the soils of watersheds and floodplains after the Chernobyl accident and the Fukushima-Daiichi NPP had performed, the main differences in the behaviour of radionuclides in natural ecosystems of both affected areas were outlined. A study of the landscape differentiation of the natural and artificial radionuclides in the peat soils in the far zone of the Chernobyl radioactive fallout in the Ukrainian Carpathians. Preliminary results of complex researches on objects of NPP "Synevyr" - lake Synevyr and bog massifs are resulted. The obtained system long-term data characterizing the behavior of radionuclides, radioecological and hydrochemical changes in a large highly polluted stratified reservoir, which is the Chernobyl NPP cooling pond, during its drainage. A large array of experimental data on radioactive contamination of all abiotic components of the lake ecosystem of the Chernobyl cooling pond was obtained, the intraannual (seasonal) dynamics of radionuclides in the water column was studied, the  Product Description popup.authors popup.nrat_date 2021-06-14 Close