タグ「forecast」
Title: Prediction of vertical distribution of 137CS and 90SR in forest soils in Belarus
Author: Perevolotsky A.N., Perevolotskaya T.V.
Reference: Radiation Biology. Radioecology, (Russian: “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ“) 52(6), December 2012
ISSN: 0869-8031
DOI: 10.1134/S0869803112060082
Keywords: forecast, migration, 137Cs, 90Sr, specific activity, supply of radionuclides, distribution of radionuclides , quasi-factor, soil
Abstract: The article analyzes the distribution of 137cs and 90sr in vertical profile onto the soil of forest ecosystem, in Belorussia, in various conditions: content of moisture, composition of woody vegetation. Describes various types of vertical migration of radionuclides under the surface of soil.
URL: http://lekarius.ru/external/paper/36946
Title: Simulation of the chernobyl radioactive cloud over Europe using the eurad model
Author: H. Hass, M. Memmesheimer, H. Geiβ, H.J. Jakobs, M. Laube, A. Ebel
Reference: Atmospheric Environment. Part A. General Topics, Volume 24, Issue 3, 1990, Pages 673-692
DOI: http://dx.doi.org/10.1016/0960-1686(90)90022-F
Keywords: Forecast; accidental release; Chernobyl; long-range transport; deposition; radionuclides
Abstract: The opean cid eposition Model (EURAD) is used to investigate the long-range transport (LRT) and deposition of radioactive material in Europe during the first week after the Chernobyl accident. Emphasis is laid on using the model system in a forecast mode as possibly would be done shortly after such an event. Thus, meteorological fields are predicted with the PSU/NCAR mososcale model MM4.The multilayer Eulerian model CTM ( hemistry ransport ) is applied to compute transport and deposition of Cs-137 and I-131 using the predicted meteorological fields. However, the accident scenario was estimated using published data. The model results and performance are discussed by comparison with observations. It is demonstrated that the model can reproduce certain observed characteristics of the radioactive cloud, i.e. trends in surface air concentrations, arrival times and wet deposition patterns. This leads to the suggestion that the predictive capability of the EURAD-system has a relatively high level considering the fact that several simple approaches were used.
URL: http://www.sciencedirect.com/science/article/pii/096016869090022F
Title: Distribution and migration of 90Sr in components of the Dnieper River basin and the Black Sea ecosystems after the Chernobyl NPP accident
Author: N.Yu. Mirzoyeva, V.N. Egorov, G.G. Polikarpov
Reference:
Journal of Environmental Radioactivity,
In Press, Corrected Proof,
Available online 21 March 2013
DOI: http://dx.doi.org/10.1016/j.jenvrad.2013.02.011
Keywords: Chernobyl accident; The Dnieper River basin; The Black Sea; 90Sr; Redistribution; Forecast; Dose assessment.
Abstract:► Regularities of change in 90Sr concentrations in the aquatic ecosystems were studied. ► Forecasts of time for 90Sr concentrations reduction to pre-accident levels were made. ► 90Sr CF values for hydrobionts did not depend on distance from the accident area. ► 90Sr is useful as a radiotracer for the chronological dating of the bottom sediments. ► Dose received by hydrobionts from 90Sr after accident period was determined.
URL: http://www.sciencedirect.com/science/article/pii/S0265931X13000489
