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Predicting ordinary kriging errors caused by surface roughness and dissectivity
Author(s) -
Siska Peter P.,
Goovaerts Pierre,
Hung IKuai,
Bryant Vaughn M.
Publication year - 2005
Publication title -
earth surface processes and landforms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 127
eISSN - 1096-9837
pISSN - 0197-9337
DOI - 10.1002/esp.1164
Subject(s) - kriging , magnitude (astronomy) , terrain , interpolation (computer graphics) , statistics , mathematics , regression , variation (astronomy) , surface roughness , surface (topology) , multivariate interpolation , computer science , geometry , geography , artificial intelligence , cartography , physics , motion (physics) , quantum mechanics , astronomy , astrophysics , bilinear interpolation
The magnitude of kriging errors varies in accordance with the surface properties. The purpose of this paper is to determine the association of ordinary kriging (OK) estimated errors with the local variability of surface roughness, and to analyse the suitability of probabilistic models for predicting the magnitude of OK errors from surface parameters. This task includes determining the terrain parameters in order to explain the variation in the magnitude of OK errors. The results of this research indicate that the higher order regression models, with complex interaction terms, were able to explain 95 per cent of the variation in the OK error magnitude using the least number of predictors. In addition, the results underscore the importance of the role of the local diversity of relief properties in increasing or decreasing the magnitude of interpolation errors. The newly developed dissectivity parameters provide useful information for terrain analysis. Our study also provides constructive guides to understanding the local variation of interpolation errors and their dependence on surface dissectivity. Copyright © 2005 John Wiley & Sons, Ltd.