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タグ「Trajectories」

The chernobyl accident: Modelling of dispersion over europe of the radioactive plume and comparison with air activity measurements

ecology・environment

Title: The chernobyl accident: Modelling of dispersion over europe of the radioactive plume and comparison with air activity measurements

Author: Armand Albergel, Daniel Martin, Bernard Strauss, Jean-Michel Gros

Reference: Atmospheric Environment (1967), Volume 22, Issue 11, 1988, Pages 2431-2444

DOI:http://dx.doi.org/10.1016/0004-6981(88)90475-1

Keywords: Long-range; modelling; radioisotopes; caesium; Chernobyl; nuclear; accident; trajectories; dispersion

Abstract: Following the release of radionuclides from the Chernobyl power plant accident, a long-range transport and deposition model is used to describe the plume dispersion over Europe. The aim of this study is the validation of a fast Lagrangjan model and a better understanding of the relative impact of some mechanisms, such as the initial plume rise. Comparisons between results and 137Cs measurement activity are discussed according to spatial and temporal variations. It is shown that many measurements can be explained only if the initial plume rise taken at 925, 850 and 700mb is considered.

URL:http://www.sciencedirect.com/science/article/pii/0004698188904751

A fast long-range transport model for operational use in episode simulation. Application to the Chernobyl accident

ecology・environment

Title: A fast long-range transport model for operational use in episode simulation. Application to the Chernobyl accident

Author: P. Bonelli, G. Calori, G. Finzi

Reference: Atmospheric Environment. Part A. General Topics, Volume 26, Issue 14, October 1992, Pages 2523-2535

DOI:http://dx.doi.org/10.1016/0960-1686(92)90104-S,

Keywords: Long-range; modelling; trajectories; dispersion; radioisotopes; Chernobyl; nuclear; accident

Abstract: A simple Lagrangian puff trajectory model and its software implementation, STRALE, are described. Standard meteorological data are used as input for the simulation of the three-dimensional atmospheric transport and dispersion of a pollutant released by a point source. The schemes adopted to describe the vertical diffusion and the interaction with the mixing layer are discussed on the basis of the comparison between simulated and measured 137Cs activities for the Chernobyl nuclear accident.

URL: http://www.sciencedirect.com/science/article/pii/096016869290104S

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