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「セシウム137Csの土壌汚染地図」"Atmospheric dispersion of radionuclides from the Fukushima-Daichii nuclear power plant" ~フランスの大気環境研究センター
**フランスの大気環境研究センターがシミュレーションの結果として発表している137Csの土壌汚染地図(文献5-前記事) で,西日本よりもロシアの一部,アラスカ,米国西海岸のほうが高い汚染レベルになっているのも風向きによるものであろう.」 ”Atmospheric dispersion of radionuclides from the Fukushima-Daichii nuclear power plant”ー「福島第一原発からの放射性核質の大気拡散」に関する論文:必見です。**

"Atmospheric dispersion of radionuclides from the Fukushima-Daichii nuclear power plant"
「セシウム137Csの土壌汚染地図」フランスの大気環境研究センター


CEREA, joint laboratory École des Ponts ParisTech and EdF R&D

Victor Winiarek, Marc Bocquet

Yelva Roustan, Camille Birman, Pierre Tran

Map of ground deposition of caesium-137 for the Fukushima-Daichii accident.

The simulation was performed with a specific version of the numerical atmospheric chemistry and transport model Polyphemus/Polair3D. The parametrisations used for the transport and physical removal of the radionuclides are described in [1,2,3,4].
The magnitude of the deposition field is uncertain and the simulated values of deposited radionuclides could be significantly different from the actual deposition. In particular, the source term remains uncertain. Therefore, these results should be seen as preliminary and they are likely to be revised as new information become available to better constrain the source term and when radionuclides data can be used to evaluate the model simulation results.

図:Map of ground deposition of caesium-137 for the Fukushima-Daichii accident.(福島由来)

Map of ground deposition of caesium-137 for the Chernobyl accident

The simulation was performed with a specific version of the numerical atmospheric chemistry and transport model Polyphemus/Polair3D. The parametrisation used for the transport and physical removal of the radionuclides are described in [1,2,3,4].
The magnitude of the deposition field is uncertain and the simulated value of deposited radionuclides could be different from the actual from the actual deposition. However the source term is much better known than for Fukushima-Daichii. A comparison with deposition measurements will be conducted to evaluate the simulation.

図:Map of ground deposition of caesium-137 for the Chernobyl accident(チェルノブイリ由来)
Movie of the Fukushima-Daichii activity in the air (caesium-137, ground level)

The simulation was performed with a specific version of the numerical atmospheric chemistry and transport model Polyphemus/Polair3D. The parametrisations used for the transport and physical removal of the radionuclides are described in [1,2,3,4].
The magnitude of activity concentration field is uncertain and could be significantly different from the actual one. In particular, the source term remains uncertain. Therefore, these results should be seen as preliminary and they are likely to be revised as new information become available to better constrain the source term and when radionuclides data can be used to evaluate the model simulation results.

この動画は元記事へ>>

Dispersion of radionuclides in the ocean: see the coastal simulations of the Sirocco team here>>

References:
1. Towards the operational estimation of a radiological plume using data assimilation after a radiological accidental atmospheric release
Victor Winiarek, Julius Vira, Marc Bocquet, Mikhail Sofiev and Olivier Saunier. Atmos. Env., 45, 2944-2955, 2011.
2. Targeting of observations for accidental atmospheric release monitoring
Rachid Abida and Marc Bocquet. Atmos. Env., 43, 6312-6327, 2009.
3. Inverse modelling-based reconstruction of the Chernobyl source term available for long-range transport
Xavier Davoine and Marc Bocquet, Atmo. Chem. Phys., 7, 1549-1564, 2007.
4. Validation of the Polyphemus platform on the ETEX, Chernobyl and Algeciras cases
Denis Quélo, Monika Krysta, Marc Bocquet, Olivier Isnard, Yannick Minier and Bruno Sportisse, Atmos. Env., 41, 5300-5315, 2007.

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テーマ:原発事故 - ジャンル:ニュース

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