(Article of periodic en Anglais - 2014)

Document title

Mapping gamma radiation and its uncertainty from weathering products in a Tasmanian landscape with a proximal sensor and random forest kriging

Authors(s) and Affiliation(s)

(1) CSIRO Land and Water, Canberra, AUSTRALIE
(2) Rothamsted Research, Hertfordshire, Harpenden, ROYAUME-UNI
(3) Dept. of Primary Industries, Parks, Water and Environment, Tasmania, AUSTRALIE


The AA. aim to illustrate the problem of mapping gamma radiation of a fairly large region, on the Meander Valley Irrigation Area in central Northern Tasmania, with a mobile radiometer sensing a few tens of centimeters above the land surface moving along widely spaced short transects. They describe the sampling, their means of spatial prediction using random forests plus regression kriging (RF + RK) from the sparse data and the non-parametric spatial bootstrap used to estimate the variances from their RF + RK models and to quantify the uncertainties of the spatial modelling. The maps show the complexity of the region in terms of soil, lithology and terrain, and they show the merits of gamma radiometry for mapping and understanding the distribution of materials in such regions


Article of periodic

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

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

Millesime : 2014, vol. 39, no6 [pp. 735-748]

Bibliographic references : 1 p.

Collation : 9 fig., 3 tabl.



INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3476

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