STATIONARY MODEL FOR RESUSPENSION OF RADIONUCLIDES AND ASSESSMENTS OFCS-137 CONCENTRATION IN THE NEAR-SURFACE LAYER FOR THE CONTAMINATED AREAS IN THE BRYANSK REGION OF RUSSIA AND BYELARUS

After the surface contamination from the Chernobyl accident on 26 Apri l 1986 had been formed, the radioactive contamination in the near-surf ace atmospheric boundary layer was dependent upon several processes in cluding resuspension. A model for resuspension, dispersion, transport, and redeposition of radioactive materials is described. The model inp ut parameters are discussed, with emphasis on the resuspension rate. T wo applications of the model to the southwestern part of the Bryansk R egion in Russia and the adjacent area in Belarus are described. The fi rst consists of a series of numerical experiments that served as prepa ration for the second application: estimates of the resuspension rate in the area surrounding the town of Novozybkov in Russia.