Reconstruction of (131)I radioactive contamination in Ukraine caused by the Chernobyl accident using atmospheric transport modelling.

The evaluation of (131)I air and ground contamination field formation in the territory of Ukraine was made using the model of atmospheric transport LEDI (Lagrangian-Eulerian DIffusion model). The (131)I atmospheric transport over the territory of Ukraine was simulated during the first 12 days after the accident (from 26 April to 7 May 1986) using real aerological information and rain measurement network data. The airborne (131)I concentration and ground deposition fields were calculated as the database for subsequent thyroid dose reconstruction for inhabitants of radioactive contaminated regions. The small-scale deposition field variability is assessed using data of (137)Cs detailed measurements in the territory of Ukraine. The obtained results are compared with available data of radioiodine daily deposition measurements made at the network of meteorological stations in Ukraine and data of the assessments of (131)I soil contamination obtained from the (129)I measurements.

[1]  G. Kelly,et al.  Proceedings of the first international conference 'The radiological consequences of the Chernobyl accident' , 1996 .

[2]  岩崎 民子.  SOURCES AND EFFECTS OF IONIZING RADIATION : United Nations Scientific Committee on the Effects of Atomic Radiation UNSCEAR 2000 Report to the General Assembly, with Scientific Annexes , 2002 .

[3]  G. Pröhl,et al.  A CONSISTENT RADIONUCLIDE VECTOR AFTER THE CHERNOBYL ACCIDENT , 2002, Health physics.

[4]  E. Voice.  The radiological consequences of the Chernobyl accident , 1997 .

[5]  B. Strauss,et al.  The chernobyl accident: Modelling of dispersion over europe of the radioactive plume and comparison with air activity measurements , 1988 .

[6]  H. Synal,et al.  Iodine-129 in soils from Northern Ukraine and the retrospective dosimetry of the iodine-131 exposure after the Chernobyl accident. , 2005, The Science of the total environment.

[7]  N. Talerko.  Mesoscale modelling of radioactive contamination formation in Ukraine caused by the Chernobyl accident. , 2005, Journal of environmental radioactivity.

[8]  S. Korneev,et al.  The feasibility of using 129I to reconstruct 131I deposition from the Chernobyl reactor accident. , 1996, Health physics.

[9]  P. Krajewski,et al.  RETROSPECTIVE EVALUATION OF 131I DEPOSITION DENSITY AND THYROID DOSE IN POLAND AFTER THE CHERNOBYL ACCIDENT , 2003, Health physics.

[10]  G. Raisbeck,et al.  Use of 129I and 137Cs in soils for the estimation of 131I deposition in Belarus as a result of the Chernobyl accident. , 2002, Journal of environmental radioactivity.

[11]  K. W. Nicholson.  The dry deposition of small particles: A review of experimental measurements , 1988 .

[12]  M. Memmesheimer,et al.  Simulation of the chernobyl radioactive cloud over Europe using the eurad model , 1990 .