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(Article of periodic en Anglais - 2014)

Document title

Using short-lived radionuclides to estimate rates of soil motion in frost boils

Authors(s) and Affiliation(s)

KLAMINDER J. (1) ; YOO K. (2) ; OLID C. (1) ; RAMEBÄCK H. (3 4) ; VESTERLUND A. (4) ;
(1) Dept. of Ecology and Environmental Science, Umeå Univ., Abisko, SUEDE
(2) Dept. of Soil Water, and Climate Univ. of Minnesota, St Paul, ETATS-UNIS
(3) Nuclear Chemistry, Dept. of Chemical and Biological Engineering, Chalmers Univ. of Technology, Gothenburg, SUEDE
(4) Swedish Defence Research Agency, Div. of CBRN Defence and Security, FOI, Umeå, SUEDE

Abstract

The AA. test whether the rate of frost creep, soil erosion and vertical soil mixing in frost boils can be estimated using short-lived radionuclides (137Cs and 210Pb). They find a small-scale variation in 137Cs and 210Pb inventories in the lower levels of the eroding regions of frost boils in comparison to the expected depositional sites; hence, the distribution of the radionuclides appears to reflect a lateral transport of atmospheric fallout from the centre of the boil (inner domain) towards the surrounding soil (outer domain). 14C dating of the soil indicates that fallout of 137Cs was mobile in the soil and that 210Pb moved with the soil matrix. A soil creep model and a surface soil erosion model are derived and applied to the lateral and vertical distributions of 210Pb in the frost boil. Both models predict the expected trajectories of soil motion and provide rates of creep, erosion and mixing. The distribution of 210Pb provides new insights about the processes and rates of soil mass movement in frost boils, if sound mass-balance models are applied

Source

Article of periodic

published at : Permafrost and periglacial processes / ISSN 1045-6740 / CODEN PEPPED

Editor : Wiley, Chichester - ROYAUME-UNI (1990)

Millesime : 2014, vol. 25, no3 [pp. 184-193]

Bibliographic references : 1 p.

Collation : 3 fig., 4 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.1811

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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