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(Article of periodic en Anglais - 2011)

Document title

Landscape-scale controls on the spatial distribution of caesium 137: A study based on an airborne geophysical survey across Northern Ireland

Authors(s) and Affiliation(s)

RAWLINS B.G. (1) ; SCHEIB C. (1) ; BEAMISH D. (1) ; WEBSTER R. (2) ; TYLER A.N. (3) ; YOUNG M.E. (4) ;
(1) British Geological Survey, Keyworth, Nottingham, ROYAUME-UNI
(2) Rothamsted Research, Hertfordshire, Harpenden, ROYAUME-UNI
(3) School of Biological and Environmental Sciences, Univ., Stirling, ROYAUME-UNI
(4) Geological Survey of Northern Ireland,, Belfast, ROYAUME-UNI

Abstract

A high-resolution airborne geophysical radiometric survey of Northern Ireland has provided an opportunity to study the distribution and possible redistribution of 137Cs. Two indices of land form derived from a digital elevation model, namely compound topographic index and the length–slope factor of the Revised Universal Soil Loss Equation, account for only 3% of the variance in 137Cs activity. In contrast, soil type and land cover in combination (including their interaction) account for 20% of the variance. In areas that received moderate fallout from Chernobyl, soil type alone accounts for a substantial proportion of the spatially correlated 137Cs activity. The AA. attribute this to each soil type having a fairly uniform radiocaesium interception potential that differs from those of other soil types and that this potential controls the vertical migration of 137Cs

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2011, vol. 36, no2 [pp. 158-169]

Bibliographic references : 46 ref.

Collation : 8 fig., 5 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2026

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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