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Aerosol deposition and origin in French mountains estimated with soil inventories of 210Pb and artificial radionuclides

Le Roux, Gaël and Pourcelot, Laurent and Masson, Olivier and Duffa, Céline and Vray, Françoise and Renaud, Philippe Aerosol deposition and origin in French mountains estimated with soil inventories of 210Pb and artificial radionuclides. (2008) Atmospheric Environment, 42 (7). 1517-1524. ISSN 1352-2310

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Official URL: http://dx.doi.org/10.1016/j.atmosenv.2007.10.083

Abstract

Radionuclide inventories were measured in soils from different French mountainous areas: Chaîne des Puys (Massif Central), Eastern Corsica, Jura, Montagne Noire, Savoie, Vosges and Rhine Valley. 210Pb soil inventories were used to estimate long-term (>75 yr) deposition of submicron aerosols. Whereas 210Pb total deposition is explained partly by wet deposition, as demonstrated by increase of 210Pb inventory with annual rainfall; a part of 210Pb in the soils of higher altitude is caused by orographic depositions. Using measurements of radionuclides coming from nuclear aerial weapon tests (137Cs and Pu isotopes), we were able to estimate the origin of aerosols deposited in high-altitude sites and to confirm the importance of occult deposition and feeder–seeder mechanism. Using a simple mass balance model, we estimate that occult deposition and feeder–seeder mechanisms account to more than 50% of total deposition of 210Pb and associated submicron aerosols in French altitude sites.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com/science/article/pii/S1352231007010151
HAL Id:hal-00906413
Audience (journal):International peer-reviewed journal
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Institution:French research institutions > Institut de Radioprotection et de Sûreté Nucléaire - IRSN (FRANCE)
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Deposited On:19 Nov 2013 10:21

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