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- de Caritat, Patrice, et al. Show all 3 Authors
- Geoderma 2015 v.259-260 pp. 81-92
- calcium carbonate; carbon sinks; data collection; decision support systems; landscapes; linear models; prediction; regolith; regression analysis; semiarid zones; soil formation; soil map; soil properties; surveys; uncertainty; Australia
- ... Soil calcium carbonate is a key component of the regolith, particularly in arid and semi-arid regions. It influences soil properties, is an important terrestrial carbon store, and is used in mineral exploration. Previous national overviews of soil carbonate distribution have been compiled from regional soil, regolith or geological maps with varying degrees of confidence and consistency. Here we de ...
- de Caritat, Patrice, et al. Show all 5 Authors
- Journal of the American Statistical Association 2015 v.110 no.509 pp. 136-148
- chemical concentration; correspondence analysis; principal component analysis; sediments; surveys; Australia
- ... Geochemical surveys collect sediment or rock samples, measure the concentration of chemical elements, and report these typically either in weight percent or in parts per million (ppm). There are usually a large number of elements measured and the distributions are often skewed, containing many potential outliers. We present a new robust principal component analysis (PCA) method for geochemical sur ...